WO2010031481A1 - Tuyau en plastique - Google Patents

Tuyau en plastique Download PDF

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Publication number
WO2010031481A1
WO2010031481A1 PCT/EP2009/006073 EP2009006073W WO2010031481A1 WO 2010031481 A1 WO2010031481 A1 WO 2010031481A1 EP 2009006073 W EP2009006073 W EP 2009006073W WO 2010031481 A1 WO2010031481 A1 WO 2010031481A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic pipe
sealing element
pipe according
plastic
soft component
Prior art date
Application number
PCT/EP2009/006073
Other languages
German (de)
English (en)
Inventor
Gerhard Kuhnert
Nils Rapp
Original Assignee
Ebm-Papst St. Georgen Gmbh & Co. Kg
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 Ebm-Papst St. Georgen Gmbh & Co. Kg filed Critical Ebm-Papst St. Georgen Gmbh & Co. Kg
Priority to DE212009000120U priority Critical patent/DE212009000120U1/de
Priority to DE112009002097T priority patent/DE112009002097A5/de
Publication of WO2010031481A1 publication Critical patent/WO2010031481A1/fr

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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/088—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe fixed using an elastic grommet between the extremity of the tube and the wall
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1615—The materials being injected at different moulding stations
    • B29C45/162—The materials being injected at different moulding stations using means, e.g. mould parts, for transferring an injected part between moulding stations
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges
    • 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
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • 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
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints

Definitions

  • the invention relates to a plastic pipe, as it finds particularly for the transport of cooling air use.
  • Pipe pieces of such plastic pipes are often used for the production of pipe systems, which can be quite complex and e.g. serve to transport air from a central fan to various devices that need to be cooled. Because of the strange shape of such pipe systems (air duct systems) one occasionally speaks of a "deer antler".
  • FIG. 5 the arrangement of FIG. 4, in which with the free end of the plastic raw res a radial fan is connected, which is driven by a brushless DC motor,
  • FIG. 6 shows the arrangement according to FIG. 5 in longitudinal section
  • FIG. 7 is an enlarged view of the detail VII of FIG. 6,
  • FIG. 8 shows a rotatable mold for the production of the plastic pipe shown in FIG. 1 on the left side in the so-called direct 2K process, FIG.
  • FIG. 9 shows a variant of FIG. 8 for producing a peripheral sealing element made of a soft component in the so-called indirect 2K method, FIG.
  • FIG. 10 is a view similar to FIG. 9, for a better explanation
  • FIG. 1 1 is a perspective view of a mold with the shape of FIGS. 9 and 10 produced
  • Fig. 12 is an enlarged view of the detail XII of Fig. 1 1, and
  • Fig. 13 is a longitudinal section through the front in Fig. 1 1 end of the pipe section shown there.
  • like or equivalent parts will be denoted by the same reference numerals and described only once. Terms such as left, right, up, down refer to the respective figure.
  • FIG. 1 shows symbolically a part of an air box 20 on the right. This has an opening 22 with a rim 24. The opening 22 serves for fastening the right end 28 of a
  • Plastic tube 26 made of a thermoplastic material, e.g. out
  • thermoplastic material PP - polypropylene, or other suitable thermoplastic material. This is dimensionally stable at the temperatures occurring during operation.
  • the right end of the tube 26 is provided with a support 30 made of a suitable elastomer. Suitable for this are, inter alia .:
  • Fig. 2 shows an enlarged section - along the line Il - Il of Fig. 1 -.
  • the support 30 is located in a groove 34 of the plastic roh res 26 and has even at its outer periphery a groove 36, which in the thickness the edge 24 is adapted, cf. Fig. 7.
  • the support 30 On its right side, the support 30 has a frusto-conical portion 38 which facilitates insertion into the opening 22, and on its left side has a portion 40 whose right edge 41 defines the groove 36.
  • FIG 3 shows an intermediate step in the attachment of the pipe section 26 in the opening 22.
  • Fig. 4 shows the pipe section 26 after its attachment in the opening 22.
  • the edge 24 is engaged in the groove 36 (Fig. 2). So you get a connection that's very simple can be made by the tubular portion 26 is pressed with its elastomeric support 30 in the opening 22 so that the support 30 engages in the opening 22.
  • Such a compound is largely dense, so has little air loss, and it can be easily and inexpensively manufactured, because an additional screw is not needed in most cases.
  • the elastomer pad 30 also causes noise damping and decoupling.
  • Fig. 5 shows how a radial fan 46 is fastened with its outlet 48 to a connecting member 50 at the left end of the plastic pipe 26.
  • the outlet pipe 48 of the fan 46 is inserted into the connecting member 54 and locked there.
  • To drive the radial fan 46 is preferably a brushless DC motor 52, as this results in a particularly quiet running of the fan 46 and a high efficiency. The latter is particularly important in cooling applications, since in this case the air sucked in by the fan 46 is hardly heated by it.
  • Fig. 6 also shows the fan 46 and its locking connection with the connecting member 50 of the tube 26. This connection is very advantageous. It is the subject of DE 20 2007 018 175.2 of 16.12.2007.
  • FIG. 7 shows an enlarged view of the detail VII of FIG. 6.
  • the pipe section 26 has the circumferential groove 34 at its left end, and into this the support 30 is injected by 2K injection molding, as explained below with reference to FIG is, so that the material of the support 30 merges with the groove 34 and thus forms a very strong and durable connection.
  • the support 30 is the circumferential annular groove 36, in which the edge 24 is engaged.
  • the support 30 has the sloping flank in the form of the frusto-conical portion 38, which facilitates the insertion of the tube 26 into the opening 22 ( Figure 1), which opening is defined by the rim 24. In this way you get a largely airtight connection that can be easily mounted. In most cases, you do not need any tools to assemble, but you need a force that can be applied by hand.
  • Fig. 8 shows a mold plate 56. This has a rotatable mold insert 58, which is provided on the left with a cavity 60 for the hard component, so in the example for the production of the plastic pipe 26. Right, the mold insert 58 has a cavity 62 for the production the soft component 30.
  • the hard component of the tube 26 is injection-molded, and then the mold insert 58 is rotated, and the soft component 30 as shown in FIG. 1 and FIG. 2 is formed on the right in the 2K process.
  • the mold plate 56 has two inflow channels:
  • the mold insert 58 has a cavity 62 for the soft component 30.
  • the tube 26 is made of the hard component. Then, the mold insert 58 is rotated, and on the right, the soft component 30 is produced, as shown in Figs. 1 and 2.
  • tubes which are produced as injection-molded parts For reasons of better manufacturing accuracy, it is generally preferred to use tubes which are produced as injection-molded parts.
  • 1 to 8 show a tube 26 which can be produced by injection molding.
  • this manufacturing method is possible only with relatively simple parts.
  • FIG. 9 shows, as a counter-example, a plastic tube 26 'which, because of its shape, can not be produced by injection molding. Therefore, it is made as a blow molding tube made of a thermoplastic material.
  • Formblasrohren can be used with advantage for the production of a mold, as shown and described in FIGS. 9 to 13.
  • FIGS. 9 to 13 For long pipes you would need according to the method of FIG. 8 very large and therefore expensive forms. Especially in these cases, one can advantageously use a mold as shown and described in FIGS. 9 to 13.
  • a mold 70 with a cavity 72 into which the blow-molding tube 26 'is inserted after its manufacture and which is therefore designed such that it fits into the cavity 72.
  • the cavity 72 has a corresponding annular groove 82, of which in Fig. 9, only the lower half is visible.
  • the right end 80 of the tube 26 '(hard plastic) fits snugly into the cavity 72 but, as shown in Fig. 9, has no radial protrusions protruding into the annular groove 82, but forms a radially inner boundary for the annular groove 82nd
  • a feed line 84 for the elastomeric material used for the soft component 30 "leads to the annular groove 82, so that the right end 80 of the blow molded part 26 'can be overmolded by the soft line 30' in this 2K process, see FIG. 10.
  • the hot soft component 30 "melts the material at the end 80 of the blow molding tube 26 ', so that a close, intimate connection between the blow molding tube 26' and the soft component 30 'is formed.
  • Figs. 11 to 13 show the end result of the process just described.
  • the ring of the soft component 30 ' which, as in Fig. 2, is provided with an annular channel 36.
  • Fig. 12 shows an enlarged view of the detail XII of Fig. 1 1.
  • the annular channel 36 is bounded on the right by a shoulder 86.
  • the shoulder 86 is formed by a ring 88, which, as shown, may have an approximately rectangular cross-section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un tuyau en plastique (26) destiné à être raccordé à une ouverture (22) délimitée par un bord (24). Ce tuyau en plastique (26) se compose d'un thermoplastique, dur à la température de fonctionnement, et présente dans une partie destinée à être reliée à ladite ouverture (22) un élément d'étanchéité (30) circulaire fabriqué par un procédé 2K et constitué d'un composant souple élastomère, ce dernier étant relié par fusion à la zone d'interface avec le tuyau en plastique (26). L'élément d'étanchéité (30) présente sur sa face extérieure une rainure annulaire (36) circulaire conçue pour recevoir le bord (24) lors du montage, le composant souple (30) étant à cet effet au moins temporairement déformé.
PCT/EP2009/006073 2008-09-22 2009-08-21 Tuyau en plastique WO2010031481A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE212009000120U DE212009000120U1 (de) 2008-09-22 2009-08-21 Kunststoffrohr
DE112009002097T DE112009002097A5 (de) 2008-09-22 2009-08-21 Kunststoffrohr

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202008013324.6 2008-09-22
DE202008013324 2008-09-22

Publications (1)

Publication Number Publication Date
WO2010031481A1 true WO2010031481A1 (fr) 2010-03-25

Family

ID=41560371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/006073 WO2010031481A1 (fr) 2008-09-22 2009-08-21 Tuyau en plastique

Country Status (2)

Country Link
DE (3) DE212009000120U1 (fr)
WO (1) WO2010031481A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8689589B2 (en) * 2010-03-29 2014-04-08 Alliance Laundry Systems, Llc Washer/extractor with plastic hose connecting fitting
DE102012010363B4 (de) * 2012-05-28 2016-09-29 Etimex Technical Components Gmbh Hohlkörperverbund mit zwei Hohlkörpern
DE102015109158A1 (de) * 2015-06-10 2016-12-15 B. Braun Avitum Ag Kupplung für Schlauchverbindungen
PL240125B1 (pl) * 2019-04-04 2022-02-21 Thessla Green Spolka Z Ograniczona Odpowiedzialnoscia Rurowe złącze króćca przewodu powietrza ze ścianką otuliny izolacyjnej, w instalacji wentylacyjnej lub klimatyzacji
DE102020202599A1 (de) 2020-02-28 2021-09-02 Wilhelm Bruckbauer Kanaleinheit zum Leiten von Kochdünsten

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1577747A (en) * 1976-05-24 1980-10-29 Wavin Bv Plastics inspection chamber
DE3313320C1 (de) * 1982-04-01 1984-12-06 Daimler-Benz Ag, 7000 Stuttgart Steckbare Verbindung zwischen einem winkelförmigen Schlauchnippel und einer Gehäusewandung
US5096233A (en) * 1990-11-29 1992-03-17 Chardon Rubber Company Universal standpipe adaptor
FR2717557A1 (fr) * 1994-03-16 1995-09-22 Gloanec Pièce composite, notamment de raccordement.
US5682924A (en) * 1994-06-30 1997-11-04 Steere Enterprises, Inc. Clean air ducts and methods for the manufacture thereof
US6135158A (en) * 1998-09-15 2000-10-24 Carlisle Engineered Products Overmolded air duct with outwardly extending main body lip
EP1462561A1 (fr) * 2003-03-26 2004-09-29 Lg Electronics Inc. Tuyau de drainage pour appareil électrique avec sortie d'eau
DE102004056272A1 (de) * 2004-11-22 2006-05-24 Bayerische Motoren Werke Ag Medienführendes Hohlbauteil

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007018175A1 (de) 2007-04-18 2007-11-22 Daimlerchrysler Ag Stromverteiler für Leitungssatz inbesondere in einem Kraftfahrzeug

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1577747A (en) * 1976-05-24 1980-10-29 Wavin Bv Plastics inspection chamber
DE3313320C1 (de) * 1982-04-01 1984-12-06 Daimler-Benz Ag, 7000 Stuttgart Steckbare Verbindung zwischen einem winkelförmigen Schlauchnippel und einer Gehäusewandung
US5096233A (en) * 1990-11-29 1992-03-17 Chardon Rubber Company Universal standpipe adaptor
FR2717557A1 (fr) * 1994-03-16 1995-09-22 Gloanec Pièce composite, notamment de raccordement.
US5682924A (en) * 1994-06-30 1997-11-04 Steere Enterprises, Inc. Clean air ducts and methods for the manufacture thereof
US6135158A (en) * 1998-09-15 2000-10-24 Carlisle Engineered Products Overmolded air duct with outwardly extending main body lip
EP1462561A1 (fr) * 2003-03-26 2004-09-29 Lg Electronics Inc. Tuyau de drainage pour appareil électrique avec sortie d'eau
DE102004056272A1 (de) * 2004-11-22 2006-05-24 Bayerische Motoren Werke Ag Medienführendes Hohlbauteil

Also Published As

Publication number Publication date
DE202009011641U1 (de) 2010-02-25
DE212009000120U1 (de) 2012-09-21
DE112009002097A5 (de) 2011-09-29

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