WO1995006559A1 - Corps creux, notamment systeme d'admission d'un moteur a combustion interne - Google Patents

Corps creux, notamment systeme d'admission d'un moteur a combustion interne Download PDF

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Publication number
WO1995006559A1
WO1995006559A1 PCT/EP1994/002851 EP9402851W WO9506559A1 WO 1995006559 A1 WO1995006559 A1 WO 1995006559A1 EP 9402851 W EP9402851 W EP 9402851W WO 9506559 A1 WO9506559 A1 WO 9506559A1
Authority
WO
WIPO (PCT)
Prior art keywords
shells
plastic
hollow body
cavities
plastic half
Prior art date
Application number
PCT/EP1994/002851
Other languages
German (de)
English (en)
Inventor
Otto Altmann
Gerhard Brenner
Original Assignee
Filterwerk Mann + Hummel Gmbh
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 Filterwerk Mann + Hummel Gmbh filed Critical Filterwerk Mann + Hummel Gmbh
Publication of WO1995006559A1 publication Critical patent/WO1995006559A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C45/0062—Joined by injection 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
    • 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
    • B29C45/14467—Joining articles or parts of a single 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/84—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10347—Moulding, casting or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • 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
    • B29C45/14467—Joining articles or parts of a single article
    • B29C2045/14524—Joining articles or parts of a single article making hollow articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics

Definitions

  • Hollow body especially suction system of an internal combustion engine
  • the invention relates to a hollow body, in particular a suction system of an internal combustion engine according to the preamble of the main claim.
  • a hollow body in particular a suction system of an internal combustion engine, which consists of at least two interconnected die-castings delimiting the hollow space of the hollow body.
  • the die castings are connected to achieve a simple and highly resilient connection by a ausvul kani sizable elastomer with the interposition of an adhesion promoter.
  • connection of two components, in particular two plastic half-shells for the intake system of an internal combustion engine is known.
  • This connection is made by overmolding or casting around connecting flanges running on the sealing surfaces.
  • a disadvantage of this encapsulation or encapsulation is that the entire intake pipe has bead-shaped thickenings, which not only have a visually disturbing effect, but also increase the weight and lead to different wall thicknesses of the plastic half-shells or the finished intake pipe.
  • the invention is therefore based on the object of a hollow body, in particular a suction system
  • Plastic as a connecting plastic which in a way causes a melting of the two half-shells and z. B. has a slightly higher melting temperature, so that an intimate connection of the plastic parts is achieved. If the half shells are made of polyamide, the connecting plastic can, for. B. PPS.
  • connection element connects the two plastic half-shells in the manner of a rivet connection and at the same time takes over the sealing between the two plastic half-shells.
  • the cavities can be arranged at very short intervals along the sealing surfaces. This increases the connection strength and creates additional security.
  • Another advantage of the invention is that the shrinkage behavior of the connecting element braces the two plastic half-shells against one another and thus further increases the sealing effect. Since no connecting flanges are required, there are no annoying bead-shaped projections, and the weight of the intake manifold can also be minimized.
  • the cavities are arranged so that they penetrate the sealing plane of the two plastic half-shells approximately at right angles. These cavities can be produced particularly easily using an appropriate injection molding tool.
  • Another embodiment of the invention provides for the sealing surface of the two plastic half-shells to be meandering. This means that the two plastic half-shells mesh with each other at the connection point.
  • An essential advantage of the invention and in particular an embodiment of the invention is that the wall thickness of the plastic half-shells in the area of the connection is not or only insignificantly greater than the wall thickness of the remaining area of the plastic half-shells. Uniform wall thicknesses ensure that plastic shrinks evenly during injection molding, which is reflected in a more uniform surface.
  • Claim 6 shows an advantageous method of manufacturing 1.
  • the two plastic half-shells are produced in parallel in one or two injection molding machines, assembled on a rotary table system and the cavities are filled with the connecting element in a further injection molding device, i.e. the assembly shot performed.
  • the complete suction system leaves assembled, and the system in one pour.
  • Figure 1 two plastic half-shells in the area of the connecting surfaces
  • FIG. 1b shows a plan view of the cutout area of the plastic half-shells shown in FIG.
  • Figure 2 shows a first variant of the connection of two plastic half-shells
  • FIG. 3 shows a second variant
  • Figure 5 shows a fourth variant
  • FIG. 6 shows an intermediate element
  • FIG. 1 shows the partial area of an upper plastic half shell 10 and the partial area of a lower plastic half shell 11. Both half shells are designed to interlock at their connecting surface 12, the toothing being designed in the form of a groove 13, 14 arranged on each of the two plastic shells and in the form of a web 15, 16 arranged circumferentially on both plastic half shells.
  • the two plastic shells are located in a tool which is provided for spraying out the existing cavities and connecting the two plastic half shells.
  • This tool exists from a middle part 17 with side slides 18, 19. These slides dip into the upper and lower shell and prevent the plastic melt from escaping.
  • the middle part 17 there is an injection opening for the plastic material 20.
  • the cavity which is between the tool and the two plastic half-shells is filled with plastic, for example PPS under high pressure.
  • the plastic fills both the cavity 21 of the lower plastic half-shell, passes through the connection opening 22 into the cavity 23 of the upper plastic half-shell and thus creates a tight connection between the two parts to be connected, above all due to the fact that the two half-shells melt slightly . Due to the shrinkage behavior of the plastic injected into the cavities, a tensile force is also exerted on the two parts, which leads to the connection surfaces leading to a tight, gap-free contact.
  • the material of the plastic half-shells 10, 11 is, for example, polyamide 6.6.
  • any plastic, both thermoplastic and thermosetting plastic can be used.
  • connection opening 22 is provided with lateral openings 24, 25. Of course, these openings can also be omitted. It is essential in this connection technique that the two cavities in the half-shells communicate with at least one connection opening.
  • connection opening 26 is shown in the plan view according to FIG. 1b. As can be seen from this figure, any number of connection openings can be arranged along the connection surface. The number of connection openings depends on this according to the required strength behavior.
  • the tool As soon as the plastic in the cavities 23 and 21 has hardened, the tool is removed.
  • the plastic suction pipe is ready for installation.
  • the surface of the plastic suction pipe in the connection area shows neither bead-like elevations nor any fraying caused by welding technology, such as occurs, for example, when mirror-welding plastic suction pipes.
  • the first variant according to FIG. 2 with the plastic half-shells 10 and 11 shows concave or convex connecting elements 27 which engage in one another.
  • the tool for injecting the connecting element is not shown here.
  • the two cavities 28, 29 are connected to one another via an opening 30.
  • the trapezoidal course of the two cavities 28, 29 can be achieved particularly easily when producing the plastic alb shells by a suitably designed tool.
  • the triangle formed between the two cavities 28, 29, through which the opening 30 extends, can also be arranged in the opposite manner. In this case, the cores can be removed more easily when the plastic half-shells are produced.
  • the second variant according to FIG. 3 shows a combination of intersecting openings in the area of the connecting surfaces.
  • the connecting surfaces of the plastic albschalen 10 and 11 have meandering grooves or webs.
  • the webs and grooves are pierced by transverse openings 31, 32.
  • This type of connection technology can be used particularly advantageously where there are increased demands on the strength and temperature resistance of the intake manifold.
  • the tool which encloses the cavities also consists of a central part 17 and side slides 18, 19. This figure shows that even with very complex connection techniques, no special requirements have to be made of the tool for spraying out the cavities.
  • a third variant according to FIG. 4 is a somewhat simplified embodiment of FIG. 3.
  • a transverse opening 35 is provided, which is arranged in the area of the connecting surface between the two plastic half-shells and penetrates a web of the plastic half-shell 11.
  • the connecting web 36 engages in a groove 37 in the plastic half-shell 10.
  • the variant according to FIG. 5 shows a connection form which is particularly simple to manufacture the two plastic half-shells.
  • a slide 41, 42 is arranged in the tool for each plastic half-shell. These slides produce both the trapezoidal shape of the cavities and the opening 38.
  • the two plastic half-shells are fixed by grooves or webs 43, 44 running along the connecting surfaces.
  • FIG. 6 The introduction of an intermediate element between an upper plastic half-shell 10 and a lower plastic half-shell 11 is shown in FIG. 6.
  • the two plastic half-shells are, for example, tubes which are connected with the interposition of an intermediate element 45.
  • the intermediate element 45 is a concentric part, a half section in FIG. 6 this part shows.
  • the intermediate element is provided with a seal 46.
  • the seal 46 consists of an elastomeric material which is connected to the intermediate element 45.
  • a variant shows the intermediate element 47 with a seal 48.
  • Another variant shows an intermediate element 49 with a seal 50.
  • the intermediate element 49 is connected to the upper and lower plastic half-shell 10, 11 with the interposition of injection-molded thermoplastic compound 51, 52.
  • the figure shown on the right shows two plastic half-shells 10, 11, which are enclosed by an injection mold 53, 54. It is possible to fill the cavity formed in the tool with a plastic compound and thus to produce a connection between the two parts 10 and 11 and at the same time to form a shoulder or a bead. Of course, there is also the possibility of inserting a prefabricated part into this cavity, which is connected to the two plastic half-shells 10, 11 by assembly injection molding.
  • FIG. 7 shows two plastic half-shells 10, 11 in which the connecting element 55 is completely enclosed.
  • This structure has the advantage that on the outer surfaces of the two Plastic half-shells no third injection molding component is visible. The establishment of such a connection is relatively simple.
  • the two plastic half-shells 10, 11 are joined together.
  • a circumferential groove 57 is provided in the plastic half-shell 11.
  • a groove 58 of the plastic half-shell 10 engages in this groove.
  • plasticized plastic material is injected into the cavity between the two half-shells via the injection opening 56.
  • the intermediate element 55 then forms in this cavity and connects the two plastic half-shells both positively and non-positively.
  • the figure clearly shows that the intermediate element is not visible on the outer surfaces of the two plastic half-shells.

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

Abstract

L'invention concerne un corps creux, notamment le système d'admission d'un moteur à combustion interne, où au moins deux parties assemblées délimitent l'espace intérieur du corps creux, notamment des semi-coques en plastique (10, 11). Ces semi-coques en plastique (10, 11) comportent des bords de raccordement pourvus de surfaces d'étanchéité (12) adjacentes. Il est prévu un élément obtenu par moulage par injection, qui relie les surfaces d'étanchéité. Dans la zone des surfaces d'étanchéité, il est prévu plusieurs espaces creux (21, 23) ou ouvertures pratiqué(e)s dans les semi-coques (10, 11) transversalement au plan d'étanchéité, aligné(e)s les un(e)s avec les autres. Ces espaces creux sont remplis avec un élement de liaison (55), notamment une matière thermoplastique.
PCT/EP1994/002851 1993-09-02 1994-08-29 Corps creux, notamment systeme d'admission d'un moteur a combustion interne WO1995006559A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934329544 DE4329544A1 (de) 1993-09-02 1993-09-02 Hohlkörper, insbesondere Sauganlage eines Verbrennungsmotors
DEP4329544.4 1993-09-02

Publications (1)

Publication Number Publication Date
WO1995006559A1 true WO1995006559A1 (fr) 1995-03-09

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ID=6496600

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Application Number Title Priority Date Filing Date
PCT/EP1994/002851 WO1995006559A1 (fr) 1993-09-02 1994-08-29 Corps creux, notamment systeme d'admission d'un moteur a combustion interne

Country Status (2)

Country Link
DE (1) DE4329544A1 (fr)
WO (1) WO1995006559A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004039132A1 (de) * 2004-08-11 2006-03-02 Poschmann Industrie-Plastic Gmbh & Co. Kg Verbindungsbereich zweier Kunststoff-Spritzgussteile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19614313B4 (de) * 1995-06-07 2006-08-10 Volkswagen Ag Saugrohranlage einer Brennkraftmaschine
DE29715572U1 (de) * 1997-09-01 1999-01-07 Mann & Hummel Filter Rohr, bestehend aus aneinandergesetzten Schalen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2206588A1 (de) * 1971-08-27 1973-08-02 Modern Plastic Co Spritzgussverfahren und vorrichtung
US4261947A (en) * 1975-05-12 1981-04-14 Yoshio Ogi Method for manufacturing hollow plastic articles by joining hollow molded portions by a molded joint
EP0121207A2 (fr) * 1983-04-05 1984-10-10 Bayer Ag Corps creux en matière plastique
DE3405456A1 (de) * 1984-02-16 1985-08-22 Bayerische Motoren Werke AG, 8000 München Verbindung zweier bauteile, insbesondere zweier kunststoffhalbschalen
EP0459374A1 (fr) * 1990-06-01 1991-12-04 Mazda Motor Corporation Système d'aspiration pour un moteur
DE4141393A1 (de) * 1991-12-16 1993-06-24 Adolf Henschel Spritzgiessverfahren zum herstellen eines rohres aus kunststoff

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1711030U (de) * 1953-06-12 1955-11-17 Sigrid Heim Befestigung von zusammengreifenden, vorzugsweise rohrfoermigen teilen, insbesondere textilspulen.
FR2553477A1 (fr) * 1983-10-14 1985-04-19 Thermowest Sa Procede de jonction etanche bord a bord de deux elements au moyen d'un joint colle, et dispositif ainsi obtenu
DE3639219C1 (de) * 1986-11-15 1988-02-25 Guenter Joh Hohlkoerper,insbesondere Ansaugkruemmer eines Verbrennungsmotors
DE3811427A1 (de) * 1988-04-05 1989-10-26 Audi Ag Verbindungsanordnung von karosserieteilen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2206588A1 (de) * 1971-08-27 1973-08-02 Modern Plastic Co Spritzgussverfahren und vorrichtung
US4261947A (en) * 1975-05-12 1981-04-14 Yoshio Ogi Method for manufacturing hollow plastic articles by joining hollow molded portions by a molded joint
EP0121207A2 (fr) * 1983-04-05 1984-10-10 Bayer Ag Corps creux en matière plastique
DE3405456A1 (de) * 1984-02-16 1985-08-22 Bayerische Motoren Werke AG, 8000 München Verbindung zweier bauteile, insbesondere zweier kunststoffhalbschalen
EP0459374A1 (fr) * 1990-06-01 1991-12-04 Mazda Motor Corporation Système d'aspiration pour un moteur
DE4141393A1 (de) * 1991-12-16 1993-06-24 Adolf Henschel Spritzgiessverfahren zum herstellen eines rohres aus kunststoff

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004039132A1 (de) * 2004-08-11 2006-03-02 Poschmann Industrie-Plastic Gmbh & Co. Kg Verbindungsbereich zweier Kunststoff-Spritzgussteile

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