WO2003106142A1 - Procede pour produire une conduite dotee d'au moins un dispositif d'attenuation, et conduite ainsi obtenue - Google Patents

Procede pour produire une conduite dotee d'au moins un dispositif d'attenuation, et conduite ainsi obtenue Download PDF

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Publication number
WO2003106142A1
WO2003106142A1 PCT/EP2003/006200 EP0306200W WO03106142A1 WO 2003106142 A1 WO2003106142 A1 WO 2003106142A1 EP 0306200 W EP0306200 W EP 0306200W WO 03106142 A1 WO03106142 A1 WO 03106142A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
preform
pass
attenuator
conduit
Prior art date
Application number
PCT/EP2003/006200
Other languages
English (en)
Inventor
Hervé KAPPEL
Eric Gross
Original Assignee
Mark Iv Systemes Moteurs (Societe Anonyme)
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 Mark Iv Systemes Moteurs (Societe Anonyme) filed Critical Mark Iv Systemes Moteurs (Societe Anonyme)
Priority to AU2003276963A priority Critical patent/AU2003276963A1/en
Publication of WO2003106142A1 publication Critical patent/WO2003106142A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4805—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by closing the mould halves
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4807—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by movable mould parts in the mould halves
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4273—Auxiliary operations after the blow-moulding operation not otherwise provided for
    • B29C49/4283—Deforming the finished article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/258—Tubular

Definitions

  • the present invention relates to the field of means for circulating gaseous fluids, and in particular for reducing the noise and vibrations associated with circulation of this type, and concerns a method of producing a pipe provided with at least one vibration attenuator, and a pipe obtained by a method of this type.
  • Attenuating devices are generally connected to the body of the pipe or conduit, thus necessitating complex assembly operations, for example by vibration welding when said tube is made of thermoplastic material.
  • the object of the present invention in particular is to propose a solution for obtaining a pipe with attenuator of the above-mentioned type in a simple manner, without assembly in the region of its main constituent body, in particular between the body of said pipe and the body of said attenuator.
  • the present invention relates in particular to a method of producing a pipe or conduit for circulating gaseous fluid(s), provided with at least one vibration attenuator in the form of a by-pass conduit portion, opening at its two ends into said pipe or conduit, characterised in that it consists in providing a substantially tubular preform made of thermoplastic material, loaded or not loaded with fibres, arranging said preform in an open mould and insufflating an expansion fluid under pressure into this preform while its constituent material is still at a temperature close to its glass transition or softening temperature, closing the mould when the preform has reached a predetermined degree of radial expansion, so as to simultaneously form the walls of said circulation pipe and of the conduit or the by-pass pipe portion, and with solid plate portions connecting the pipe and the pipe portion and formed in one piece with the walls thereof, extracting the unit [pipe by-pass pipe portion] from said mould after solidification and finally attaching or forming connecting and branching pieces at the two opposing ends of the circulation pipe.
  • the degree of expansion of the preform will depend on the form to be obtained and the nature of the material used, said expansion being able to be completed at the moment of complete closure of the mould or else optionally to continue beyond.
  • the solid plate portions allow the overall structure to be stiffened or supporting fitting plates to be provided.
  • At least some of the portions may be provided with at least one through-aperture, allowing the positioning of a fixing means of the stud, rivet or bolt/nut type.
  • the connecting pieces can be attached either by injection moulding or by vibration welding.
  • These connecting pieces may each comprise one or more fixing eyelets formed in one piece with said connecting pieces, to connection and fitting of the unit to these ends.
  • the circulation pipe may be provided with at least one additional attenuator, for cooperating operationally with the first attenuator formed by the by-pass tube portion.
  • the method may consist in subsequently attaching at least one additional attenuator to said circulation pipe, for example by vibration welding in the region of an aperture in the wall of said pipe.
  • the method for mamtaining a structure of the body of the circulation pipe without a join or a similar assembly zone, consists in forming at least one additional attenuator integrally with said pipe, by controlled shaping of the wall of said pipe when the mould is closed on the expanded preform or else during expansion.
  • the circulation pipe is provided with two additional attenuators in the form of recesses with a circular cross-section of its wall, situated in the immediate vicinity, preferably downstream of the apertures of the ends of the by-pass pipe portion in the form of a loop opening into the circulation pipe.
  • the present invention also relates to a pipe or conduit for circulation of gaseous fluid(s) provided with at least one attenuator obtained by the production method described above, characterised in that it comprises at least one by-pass pipe portion, formed in one piece with the wall of the circulation pipe and opening at its two ends into the latter, said circulation pipe being provided at each of its two ends with a connection piece which has been attached or moulded on, or formed in one piece (as a function of its structural complexity).
  • Fig. 1 is a front view of the circulation pipe according to the invention
  • Fig. 2 is a plan view of the pipe in Fig. 1 ;
  • Fig. 3 is a right side view of the pipe shown in Fig.2;
  • Fig. 4 is a sectional view along A- A of the pipe shown in Fig. 2;
  • Fig. 5 is a sectional view along B-B of the pipe shown in Fig. 2.
  • the invention relates to a pipe or conduit 1 for the circulation of gaseous fluid(s) provided with at least one integrated structure for attenuating vibrations, in particular acoustic vibrations.
  • said circulation pipe or conduit 1 comprises at least one by-pass pipe portion 2, formed in one piece with the wall 1' of the circulation pipe 1 and opening therein at its two ends, said circulation pipe 1 being provided at each of its two ends with a connecting piece 4 which has been attached or moulded on, or optionally formed in one piece with the circulation tube 1.
  • Said circulation pipe 1 is preferably provided with two additional attenuators 5 in the form of cavities or niches recessed from the wall 1' of the circulation pipe 1 and arranged downstream of discharge apertures 2" of the by-pass tube portion 2.
  • the circulation pipe 1 may have a rectilinear structure (median axis of circulation in the form of a straight line) or not (non-rectilinear median axis of circulation, but optionally located in a plane).
  • said circulation pipe 1 will generally have a structure with three- dimensional extension, which adapts to the assembly site intended for installation thereof. In the latter case, the axes of the connecting pieces 4 are situated in non- parallel planes.
  • Fig. 1 to 5 of the accompanying drawings show a preferred embodiment of a circulation pipe according to the invention.
  • This pipe or conduit 1 comprises a by-pass conduit or pipe portion 2 in the form of a loop (attenuation by interference) and two lateral recesses 5 (attenuators in ⁇ /4) forming cavities in the wall 1' of the pipe 1 substantially facing the discharge apertures 2" of the by-pass portion 2.
  • a complex attenuator structure in the form of an A is thus obtained.
  • the axes of symmetry of the circular recesses 5 are inclined with respect to the discharge axes of the apertures 2" of the ends of the by-pass pipe portion 2.
  • This unit consisting of the pipe or conduit 1 and loop portion 2 is noteworthy in that its main body is obtained in one production operation by injection-blow moulding and therefore in one piece (no join or assembly line).
  • connecting or branching pieces 4 attached, for example, by vibration welding.
  • the pipe or conduit 1 with its attenuators 2 and 5 is preferably produced from PA6 or PA66 loaded to 15% with glass fibres, and the connecting pieces 4 as well as the various lugs or fixing eyelets 4' are also made from PA6 or PA66 loaded to 35% with glass fibres.
  • the unit consisting of circulation pipe 1 and attenuators 2, 5 may also be produced from a non-loaded thermoplastic material, metal rings then being positioned and moulded on in the region of the connecting pieces 4.
  • Said unit may advantageously be used for the circulation of pressurised hot gas, for example upstream or downstream from a motor vehicle turbocompressor.
  • pressurised hot gas for example upstream or downstream from a motor vehicle turbocompressor.

Abstract

La présente invention concerne un procédé pour produire une conduite dotée d'au moins un dispositif d'atténuation des vibrations se présentant sous la forme d'une partie de conduite de dérivation. Le procédé se caractérise par les étapes suivantes: mise à disposition d'une préforme; mise en place de ladite préforme dans un moule ouvert; et insufflation d'un fluide d'expansion sous pression dans cette préforme alors que la matière qui la constitue se trouve toujours à une température proche de sa température de transition vitreuse; fermeture du moule lorsque la préforme a atteint un degré d'expansion radiale prédéterminé, de façon à former simultanément les parois (l' et 2') de ladite conduite (1) et de la partie de conduite de dérivation (2), et les parties de plaque solides (3) qui relient la conduite (1) et la partie de conduite (2); retrait de l'unité [conduite (1)/partie de conduite de dérivation (2)] dudit moule après solidification; et pour finir, fixation ou moulage des pièces de connexion et de ramification aux deux extrémités opposées de la conduite (1).
PCT/EP2003/006200 2002-06-13 2003-06-12 Procede pour produire une conduite dotee d'au moins un dispositif d'attenuation, et conduite ainsi obtenue WO2003106142A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003276963A AU2003276963A1 (en) 2002-06-13 2003-06-12 Method of producing a pipe provided with at least one attenuator and pipe obtained thereby

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0207303 2002-06-13
FR0207303A FR2840847B1 (fr) 2002-06-13 2002-06-13 Procede de fabrication d'un tuyau muni d'au moins un attenuateur et tuyau resultant

Publications (1)

Publication Number Publication Date
WO2003106142A1 true WO2003106142A1 (fr) 2003-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/006200 WO2003106142A1 (fr) 2002-06-13 2003-06-12 Procede pour produire une conduite dotee d'au moins un dispositif d'attenuation, et conduite ainsi obtenue

Country Status (3)

Country Link
AU (1) AU2003276963A1 (fr)
FR (1) FR2840847B1 (fr)
WO (1) WO2003106142A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8763250B2 (en) 2006-12-18 2014-07-01 Mahle International Gmbh Method and device for producing a pipe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2864199B1 (fr) * 2003-12-23 2006-02-24 Mark Iv Systemes Moteurs Sa Conduit a attenuateurs acoustiques integres et son procede fabrication
FR2894645B1 (fr) * 2005-12-13 2009-03-20 Coutier Moulage Gen Ind Conduit de transport de gaz ayant un ecoulement a pression variable avec attenuation acoustique integree
FR3027995B1 (fr) 2014-11-05 2018-06-15 Systemes Moteurs Conduit integrant un dispositif d'attenuation acoustique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63154335A (ja) * 1986-12-19 1988-06-27 Nissan Motor Co Ltd 樹脂製インテ−クマニホ−ルド
JPH0397521A (ja) * 1989-09-12 1991-04-23 Honda Motor Co Ltd サイレンサの製造方法
EP0701083B1 (fr) * 1994-08-26 1998-11-11 Excell Corporation Produit creux en matière plastique avec un atténuateur sonore et méthode de fabrication
FR2768961A1 (fr) * 1997-09-26 1999-04-02 Hutchinson Procede de fabrication de produits creux par extrusion-soufflage et produits ainsi obtenus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63154335A (ja) * 1986-12-19 1988-06-27 Nissan Motor Co Ltd 樹脂製インテ−クマニホ−ルド
JPH0397521A (ja) * 1989-09-12 1991-04-23 Honda Motor Co Ltd サイレンサの製造方法
EP0701083B1 (fr) * 1994-08-26 1998-11-11 Excell Corporation Produit creux en matière plastique avec un atténuateur sonore et méthode de fabrication
FR2768961A1 (fr) * 1997-09-26 1999-04-02 Hutchinson Procede de fabrication de produits creux par extrusion-soufflage et produits ainsi obtenus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 416 (M - 759) 4 November 1988 (1988-11-04) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 279 (M - 1136) 16 July 1991 (1991-07-16) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8763250B2 (en) 2006-12-18 2014-07-01 Mahle International Gmbh Method and device for producing a pipe

Also Published As

Publication number Publication date
AU2003276963A1 (en) 2003-12-31
FR2840847B1 (fr) 2004-10-22
FR2840847A1 (fr) 2003-12-19

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