EP0907497A1 - Procede et dispositif de fabrication de manchons au bout de tubes en plastique - Google Patents

Procede et dispositif de fabrication de manchons au bout de tubes en plastique

Info

Publication number
EP0907497A1
EP0907497A1 EP97926911A EP97926911A EP0907497A1 EP 0907497 A1 EP0907497 A1 EP 0907497A1 EP 97926911 A EP97926911 A EP 97926911A EP 97926911 A EP97926911 A EP 97926911A EP 0907497 A1 EP0907497 A1 EP 0907497A1
Authority
EP
European Patent Office
Prior art keywords
pipe
sleeve
tool
socket
area
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.)
Withdrawn
Application number
EP97926911A
Other languages
German (de)
English (en)
Inventor
Regina Schnallinger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0907497A1 publication Critical patent/EP0907497A1/fr
Withdrawn legal-status Critical Current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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • B29C57/06—Belling or enlarging, e.g. combined with forming a groove using mechanical means elastically deformable
    • 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
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride

Definitions

  • the invention relates to a method for producing end sleeves on plastic pipes from plastics which can be molded in the hot state, in particular polyolefins or PVC, in which an area having the sleeve length at the end of the pipe heats up to or above its deformation temperature in a heating station, in this state it is formed into a sleeve by means of a socket tool introduced from the pipe end and is cooled below the hot-forming temperature before and / or after the socket tool is pulled.
  • the invention relates to a device for performing the method, with an on muff station, in which a e.g. as a tapering tool formed on the introducer, tapering tapering dome with relative longitudinal adjustment in a e.g. in a heating station heated to or above its deformation temperature, approximately the length of the sleeve, at the end of a plastic pipe, with expansion and deformation of this area to the sleeve.
  • a e.g. as a tapering tool formed on the introducer, tapering tapering dome with relative longitudinal adjustment in a e.g. in a heating station heated to or above its deformation temperature, approximately the length of the sleeve, at the end of a plastic pipe, with expansion and deformation of this area to the sleeve.
  • Polyolefins high-pressure and low-pressure polyethylene, polypropylene or other thermoformable plastics (thermoplastics), especially PVC.
  • the possible Deformability largely depends on the respective manufacturing material and the temperatures that can be used during the shaping, the deformability being influenced not only by the main manufacturing material but also by the type, amount and consistency, for example grain size, of fillers used. In general, it can be said that the smaller the necessary expansion of the tube to the sleeve, the wall thickness of the tube and the length of the sleeve to be manufactured, the easier it is to manufacture.
  • such sleeves can only be produced in series and productively up to limit dimensions, so that if, for example, sleeves with diameters and lengths above this limit are required, more expensive manufacturing materials with less fillers and cheaper materials for the entire tube Must use hot formability.
  • Special shapes for the end sleeves for example for connecting thicker pipes or pipes with larger diameters, can often only be provided by manufacturing them in a separate injection molding process and connecting them to the pipe or directly to the end of an existing pipe at the Injection molding process. This statement also applies if the basic shape of a molding, for example a socket, differs largely from the basic shape of the pipe, for example if a square socket is to be connected to a round pipe.
  • the usual procedure here is either to design the component to be connected as a fitting with a round pipe socket, which is inserted into a normal end sleeve of the pipe, or, as described above, for large series, to design this component again as a molded component.
  • the object of the invention is to improve a method of the type mentioned at the outset in order to simplify the dimensionally accurate manufacture of sleeves, to enable the manufacture of sleeves which are larger in diameter and in length than by the previous method, and nevertheless to make dimensional changes by means of the To largely or completely avoid the effect of pipes made of the appropriate material.
  • a partial object of the invention is to provide a simple device for carrying out the improved Procedure.
  • the object is achieved in that the tube for the insertion of the socket tool is held at the outer end of the socket area with the insertion of the socket tool allowing the outside and inside of the tube wall to be clamped.
  • the basic idea of the invention - in retrospect extremely simple - is that it is much easier to pull a resilient sheath onto a mandrel if the sheath is held by the introducer than to push the sheath over the mandrel under pressure .
  • the tube material can be heated not only to a temperature that allows the deformation, but also to a much higher temperature at which a much larger part of the crystals that produce the memory effect is liquefied in the inherently crystalline structure of the thermoplastic than at the temperatures permitted for the deformation according to the previous methods.
  • clamping jaws that can be adjusted radially from the starting diameter to the final diameter or, similar to expanding cores or folding cores, can have inner parts that can be designed such that they only protrude slightly beyond the inside of the pipe or are pressed into the inside of the pipe in the holding area, so that the sleeve tool can be run through.
  • a preferred device for carrying out the method according to the invention is characterized in that for the outer end of the socket area of the pipe, a holding device is provided which has clamps with spreading members acting on the inside of the pipe wall, which expand the pipe material out of its basic position corresponding to the starting diameter of the pipe end into a tube that allows the socket tool to pass through and the pipe end with its outside against a counter-holder press ⁇ de clamping position are adjustable.
  • the holding device has an outer sleeve through which the fitting tool can be inserted into the pipe end, the outer sleeve on the pipe side having an annular seat for the end of the expanded pipe with counterholders for the outside thereof and on it At a distance from this ring seat, on the insertion side and outside the tool guide path, spreading arms are held, which in the rest position with their free ends protrude inward at flat angles of attack into the longitudinal region of the ring seat and can engage there in the still undeformed pipe end, the retracting fitting tool also providing insertion aids for this tool, spreading arms spreading while widening the pipe end, so that they release the passage of the Aufmufftechnik ⁇ tool with their free ends, press the pipe end from the inside of the pipe against the counter holder of the ring seat and hold the pipe during hold on to the next fitting process.
  • the counterholders are preferably attached in such a way that they only extend up to an annular bead intended for receiving a seal in the case of corresponding sleeves.
  • the ring bead itself can be produced in a known manner, if necessary with the additional use of a divisible outer shape, by inflating the bead area into the outer shape or also using extendable folding cores of the suffing tool.
  • the spreading arms consist of on the outer sleeve Angle of attack clamped and attached in a uniform circumferential distribution leaf springs.
  • the use of springs as spreading arms has the advantage that no joints are necessary, the spreading movement takes place more easily and thin springs can be used which are easy to insert on the inside of the sleeve or in the flat grooves provided there for the insertion of the fitting tool Can find admission.
  • One or more ring combs can be provided as counterholders of the ring seat, which, like the ends of the spreading arms, press into the heated pipe material in the clamped position.
  • the end of the sleeve is held securely and has a clean appearance that resembles the outer edge of a crown cap.
  • the fitting tool and the outer sleeve with a corresponding arrangement of the spreading arms deviate from the basic cross-sectional shape of a rotating body, e.g. have a quadrangular or polygonal cross-sectional shape for producing corresponding sleeves.
  • FIG. 1 shows a pipe with an end sleeve produced according to the method according to the invention
  • FIG. 2 shows the holding device according to the invention of an on muff station with an inserted pipe end before the fitting process on average
  • FIG. 3 shows the holding device with the pipe end held and partly in FIG the pipe retracted Aufmuffdom the Aufmuffstation
  • a sleeve 2 which is very long in relation to the tube diameter and has a large diameter, is formed on the end of a tube 1, which sleeve was held at its end 3 during the fitting process and at a distance from the end 3, for example by inflation in an outer shape manufactured ring bead 4 for receiving a sealing ring
  • the sleeve area 2, 3, 4 of the tube was heated over its entire length to a relatively high temperature, so that the memory effect in the finished sleeve itself the manufacture from susceptible material is practically impossible
  • the holding device 7 essentially consists of an outer sleeve 8 which is held at the outer end 9 and next to an annular seat 10 at the inner end 11 only slightly larger in diameter than the mandrel 5 and slightly tapered from the inner end 11 to a protruding part 12
  • the protruding part 12 represents an annular groove with a triangular cross section, the outer flank of which drops towards 12 again.
  • spring tongues 13 serving as spreading arms are attached, with the angle of attack falling flat against the end 11 and the ring seat 10 in the idle state.
  • the free ends of the spring tongues 13 lie close together on a circle.
  • the spring tongues can have a width of the order of 10 mm and a thickness of the order of 1 mm.
  • the heated pipe 1 has been inserted into the outer sleeve 8 with its corresponding end in such a way that the end edge projects slightly beyond the ring seat 10, the ends of the spring tongues 13 engaging in this pipe end 3.
  • the Aufmuffdom 5 is retracted from the right and thereby spreads the spring tongues 13 to the outside almost to rest on the inner wall of the outer sleeve 8, the free ends of the spring tongues or leaf springs 13 which engage in the pipe end 3, this Expand the tube end and press it into the ring seat 10.
  • the ring seat 10 there are one or more ring combs 14 parallel to the edge, which, when the leaf springs 13 are fully expanded, press into the pipe end 3, which now forms the socket end, from the outside.
  • the ends of the leaf springs also press outward into the sleeve end 3. From this position, the sleeve end, which is widened in any case by the pivoting out of the leaf springs, is held on the outer sleeve 8, so that the retracting Aufmuffdom not only receives an insertion aid via the leaf springs 13, but also a compression of the sleeve region of the tube when it is pulled onto the mandrel 5 is prevented.
  • the sleeve area can be cooled beforehand until the sleeve 2 has the necessary stability, after which the sleeve dome comes out or the pipe 1 with the finished sleeve 2 from the sleeve dome is subtracted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Gloves (AREA)

Abstract

Ce procédé sert à fabriquer des manchons (2) au bout de tubes en plastique (1) à partir de matières plastiques façonnables à chaud, notamment des polyoléfines ou du PVC. Une zone terminale du tube (1) de longueur pratiquement équivalente à celle du manchon est chauffée dans une station de chauffage jusqu'à ou au-delà de sa température de façonnage, est transformée en un manchon (2) au moyen d'un outil de manchonnage (5) introduit depuis l'extrémité (3) du tube, puis est refroidie jusqu'à une température inférieure à sa température de façonnage à chaud, avant et/ou après le retrait de l'outil de manchonnage (5). Des dispositifs de serrage (13, 14) qui s'enclenchent dans les côtés intérieur et extérieur de la paroi du tube sans gêner l'introduction de l'outil de manchonnage dans le tube retiennent le tube (1) par l'extrémité extérieure de la zone de manchonnage (2) avant que l'outil de manchonnage (5) ne soit introduit, de sorte que la zone de manchonnage soit tirée et non poussée sur l'outil de manchonnage (5). L'invention concerne également un dispositif de mise en oeuvre de ce procédé.
EP97926911A 1996-06-20 1997-06-19 Procede et dispositif de fabrication de manchons au bout de tubes en plastique Withdrawn EP0907497A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1092/96 1996-06-20
AT109296A AT404448B (de) 1996-06-20 1996-06-20 Vorrichtung zum herstellen von endmuffen an kunststoffrohren
PCT/AT1997/000135 WO1997048545A1 (fr) 1996-06-20 1997-06-19 Procede et dispositif de fabrication de manchons au bout de tubes en plastique

Publications (1)

Publication Number Publication Date
EP0907497A1 true EP0907497A1 (fr) 1999-04-14

Family

ID=3506414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97926911A Withdrawn EP0907497A1 (fr) 1996-06-20 1997-06-19 Procede et dispositif de fabrication de manchons au bout de tubes en plastique

Country Status (8)

Country Link
EP (1) EP0907497A1 (fr)
JP (1) JP2000512227A (fr)
CN (1) CN1073924C (fr)
AT (1) AT404448B (fr)
AU (1) AU711665B2 (fr)
BR (1) BR9709842A (fr)
CA (1) CA2259639A1 (fr)
WO (1) WO1997048545A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1015860C2 (nl) * 2000-08-02 2002-02-05 Wavin Bv Werkwijzen en inrichtingen voor het vervaardigen van een buis van biaxiaal georiÙnteerd thermo-plastisch kunststofmateriaal met een integrale mof.
US7310866B2 (en) * 2005-01-11 2007-12-25 Eddy Allan Balma Method for manufacturing a percussion instrument
CN107031031B (zh) * 2017-06-15 2019-02-01 青岛海聚新材料科技有限公司 一种增强热塑性塑料复合管管端成型装置及方法
DE102018006829B4 (de) * 2018-08-28 2020-03-19 Global Safety Textiles Gmbh Vorrichtung und Verfahren zur Fixierung eines Anschlusses eines Versorgungsschlauchs an einem OPW-Luftsack, insbesondere in einem Fahrzeugrückhaltesystem
CN108943674A (zh) * 2018-08-31 2018-12-07 张家港市东南恒力汽车零部件有限公司 用于塑料管管端的成型机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1479073B2 (de) * 1963-01-19 1973-05-30 Dynamit Nobel Ag, 5210 Troisdorf Vorrichtung zum aendern des querschnitts von zylindrischen hohlkoerpern aus thermisch verformbaren materialien
DE1471073A1 (de) * 1963-09-26 1969-01-09 Corhart Refractories Co Feuerfester Baustoff und Ofenauskleidung
IT1213648B (it) * 1987-07-16 1989-12-29 Elmepla Spa Procedimento per la realizzazione di una bicchieratura stabile con o senza rinforzo in tubi di polietilene
DE4333566A1 (de) * 1992-11-04 1994-05-05 Theysohn Friedrich Fa Verfahren zum Aufweiten des Endes eines aus Kunststoff bestehenden Rohres

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9748545A1 *

Also Published As

Publication number Publication date
CA2259639A1 (fr) 1997-12-24
CN1225601A (zh) 1999-08-11
AT404448B (de) 1998-11-25
AU711665B2 (en) 1999-10-21
JP2000512227A (ja) 2000-09-19
AU3159797A (en) 1998-01-07
CN1073924C (zh) 2001-10-31
ATA109296A (de) 1998-04-15
BR9709842A (pt) 2000-01-11
WO1997048545A1 (fr) 1997-12-24

Similar Documents

Publication Publication Date Title
DE2603393C2 (de) Verfahren zum Herstellen eines ringförmigen Kunststoff-Verbundteiles
DE2219851C3 (de) Verfahren und Vorrichtung zum Formen einer Verbindungsmuffe
AT400355B (de) Verfahren zur herstellung einer rohrauskleidung
DE3020968C2 (fr)
EP0396151B1 (fr) Procédé pour fabriquer une connexion de bride de tuyau
EP0057000A1 (fr) Procédé pour déformer des objets en matière plastique
DE2633050A1 (de) Verfahren zum herstellen von fittings aus kunststoffmaterial und spritzgussform zur durchfuehrung dieses verfahrens
DE69103856T2 (de) Vorrichtung zur Herstellung von Zellen in fortlaufenden Bäudern, vorzugsweise zum Verpacken von Suppositorien od.dgl.
EP0241776B1 (fr) Procédé pour la fabrication d'une pièce plastique avec mémoire et appareil pour la mise en oeuvre de ce procédé, ainsi que pièce plastique fabriquée selon ce procédé
DE2354554A1 (de) Gegen zugkraefte widerstandsfaehige kunststoffrohrverbindung
AT404448B (de) Vorrichtung zum herstellen von endmuffen an kunststoffrohren
EP0666790A1 (fr) Procede de fabrication de pieces moulees en matieres plastiques moulables a l'etat chaud.
DE2703300C3 (de) Im Spritzgußverfahren hergestelltes Muffenrohr aus thermoplastischem Kunststoff und Verfahren zu seiner Herstellung
DE2638447A1 (de) Verfahren und vorrichtung zum herstellen von formteilen, insbesondere rohrboegen aus rohren aus thermoplastischem kunststoffschaum
DE1429001B2 (de) Verfahren und vorrichtung zum herstellen eines behaelters aus thermoplastischem material
DE1805446C3 (de) Verfahren zum Herstellen eines aus einem thermoplastischen Kunststoff bestehenden rohrförmigen Körpers
DE3152022C2 (fr)
CH671083A5 (fr)
DE60110694T2 (de) Verfahren und Form zur Herstellung eines Balges, durch das Verfahren herstellbarer Vorformling, und Balg
DE2415231C2 (de) Vorrichtung zur stauchenden Ausbildung einer Anschlußmuffe mit Ringnut am Ende eines Kunststoffrohrs
EP1728617A2 (fr) Procédé pour fabriquer des manchons emboitables pour des extrémités de tubes et insert à bourrelet pour un tel manchon
DE2412726A1 (de) Verfahren zur herstellung von rohrreduzier-oder rohrverbindungsstuecken oder anderen rohrarmaturen mit verschiedenen querschnitten aus thermoplastischem material und vorrichtung zur durchfuehrung des verfahrens
DE3236120A1 (de) Dichtungsring
AT520667A1 (de) Spannvorrichtung
DE2421786C3 (de) Muffenrohrverbindung für Kunststoffrohre

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IT LI NL PT SE

17P Request for examination filed

Effective date: 19990112

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20001016

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20010220