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WO2000076741A1 - Fabrication d'articles - Google Patents

Fabrication d'articles Download PDF

Info

Publication number
WO2000076741A1
WO2000076741A1 PCT/GB2000/002278 GB0002278W WO0076741A1 WO 2000076741 A1 WO2000076741 A1 WO 2000076741A1 GB 0002278 W GB0002278 W GB 0002278W WO 0076741 A1 WO0076741 A1 WO 0076741A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
tool
moulded
article
moulding
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.)
Ceased
Application number
PCT/GB2000/002278
Other languages
English (en)
Inventor
Alan Henry Organ
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.)
Trelleborg Sealing Solutions UK Ltd
Original Assignee
Forsheda Ltd
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 Forsheda Ltd filed Critical Forsheda Ltd
Priority to AU55450/00A priority Critical patent/AU5545000A/en
Publication of WO2000076741A1 publication Critical patent/WO2000076741A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • 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
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • B29C2045/1667—Deformation bonds
    • 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
    • B29C2045/1678—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part first moulding the soft material

Definitions

  • This application relates to fabricated articles and methods and apparatus for fabricating the same.
  • this application relates to the fabrication of articles comprising moulded components.
  • a sealing member is provided at the interface between the two members.
  • the sealing member is preferably attached to one of the two members, for example, using adhesive.
  • adhesive this adds an additional step to the assembly process, and may cause a problem in finding suitable adhesive for the elastomeric and plastics materials involved.
  • the invention consists in a method of creating an article comprising two components, the method including the steps of forming a first component with at least one retaining portion, and moulding a second component about said al least one retaining portion, so that the latter is deformed in the moulding process and thereby retains the components together.
  • said at least one retaining portion is deformed either by the flow of material introduced into a mould to form the second component, or by the thermal energy of the fluid or semi-fluid material introduced into the mould to form the second component, or by chemical reaction between the substance of the first component and the material introduced into the mould to form the second component.
  • the deformation of said at least one retaining portion can be a result of a combination of any of these causes.
  • the first component may be a moulded elastomeric component
  • the second component may be a moulded plastics component.
  • the first component may be an elastomeric seal and the second component may be a plastics header tank of a vehicle engine cooling system. Us g this method, the seal is attached securely to the header tank during manufacture of the tank, and the cl lance of the seal becoming misaligned during mounting of the header tank to other parts o the cooling system is reduced.
  • the invention consists in a method of fabricating an article in which a first component of the article is moulded in a first tool and is transferred on a portion of the first tool to a second tool in which a second component of the article is moulded in contact with the first component so that the two are combined, said portion of the first tool having a moulding surface which defines part of the second component.
  • the first component is moulded from elastomeric material and comprises a sealing member
  • the second component is moulded from plastics material.
  • the second component may be the header tank of a vehicle engine cooling system incorporating an annular sealing member at its closing interface with another part of the system.
  • Fieure 1 is a plan view of elastomeric moulding apparatus for manufacturing the sealing member of a header tank;
  • Figure ! is a cross-section of the moulding apparatus of Figure 1;
  • Figure 3 is a detail from Figure 2 to an enlarged scale
  • Figure 4 is a cross-section of plastics moulding apparatus for manufacturing the body of a header tank
  • Figure 5 is a longitudinal section of the moulding apparatus of Figure 4; and Fi g ure 6a and 6b are schematic illustrations of the plastics material as it flows into the mould of Figures 4 and 5 and contacts the pre-formed sealing member of Figures 1 and 3.
  • the moulding apparatus for manufacturing the sealing member consists of a moulding tool I defining an annular cavity 2 for forming a sealing body, and a cooperating moulding tool 3 that closes the open mouth of the cavity 2 and defines a series of elongated channels 4 to form tabs that project from the scaling body.
  • the rectangular overall shape of the sealing body and arrangement of tabs is best seen in Figure 1.
  • the moulding tool 3 is mounted on a base plate 5, and the moulding tool 1 is mounted on a transfer plate 6 which is located between the base plate 5 and a clamp plate 7.
  • Pins 8 guide relative movement of the base plate and clamp plate in opening and closing the mould.
  • Guide pins 11 assist alignment of the transfer plate 6 with the moulding tool 3 when they engage one another.
  • a punch 9 cooperates with a recess 10 in the rear of the transfer plate 6 and is formed with channels 12 to conduct elastomeric material to the mould cavity 2 during the seal moulding process.
  • the mould is opened and the transfer plate 6 and moulding tool 1 are disengaged from the moulding tool 3.
  • the tabs formed on the sealing member are pulled free of the recesses 4 in which they are formed.
  • the moulding tool 1 still with the sealing member contained within it, is removed to equipment for a secondary plastics moulding process.
  • the moulding tool 1 either still attached to the transfer plate 6, or mounted on a separate back plate 12, is engaged with a moulding tool 13 having a moulding recess 14 into which the tabs 15 of the sealing member 22 project.
  • the recess 14 has the external profile for the required shape of header tank seen in Figures 4 and 5, and the moulding tool 1 has a central projecting portion 23 wliich has the inner profile of the header tank and cooperates with the recess 1 to define a cavity 16 which forms U.e wall of the header tank.
  • Plastics material 24 is injected through a passageway 17 that communicates with the cavity 16. The plastics flows into the extremities of the cavity in the region of the tabs 15 of the sealing member, and in the process, deflect the tabs laterally so that they are no longer completely upright within the cavity when the plastics sets. This process is illustrated in Figures 6a to 6c of the drawings.
  • This process has the effec: of mechanically keying the tabs 15 within the rim of the header tank so as to hold the sealing member in place. At the same time, there may be a mechanical bonding process between compatible elastomeric and plastics materials, or by surface coating the tabs 15 before the plastics injection process.
  • the mould is opened and the moulding tool 13 separates from the moulded header tank which remains in place on the moulding tool 1 by virtue of the shape of the sealing member 22 which is held captive within the re-entrant cavity 2.
  • the sealing member 22 is released by forcibly ejecting it from the tool 1 with the ejection pins IS.
  • the body of the sealing member is thereby forcibly withdrawn from the cavity 2, but to aid this withdrawal process, the moulding tool 1 incorporates a release plate 19 around its periphery which defines the outer edge of the sealing member as shown in Figure 3.
  • the release plate 19 is free to move relative to the base of the moulding tool 1 and is guided by pins 20 attached to the release plate and which have heads guided in recesses 21 in the base of the tool 1.
  • the axial force exerted on the sealing member 22 to remove it from the cavity 2 is therefore transferred to the release plate 19, wliich moves with the sealing member, and thereby provides more space to accommodate distortion of the sealing member as it is further withdrawn through the opening of the cavity 2.
  • the tabs 15 may have a different profile and shape to that illustrated, and may be arranged other than in a straight line as shown in Figure 1.

Landscapes

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

Abstract

L'invention concerne la fabrication d'un article par formation d'un premier élément (22) pourvu d'au moins un partie de retenue (15) et par moulage d'un second élément (24) autour de ladite partie de retenue (15), de manière telle que cette dernière soit déformée lors du processus de moulage, ce qui permet d'unir les éléments. Le premier élément (22) est moulé de préférence à l'intérieur d'un premier outil (1, 3) puis transféré sur une partie (1) du premier outil vers un second outil (13) dans lequel est moulé le second élément (24), en contact avec le premier (22), afin que les deux éléments soient combinés, ladite partie (1) du premier outil possédant une surface de moulage (23) qui définit une partie du second élément. Le premier élément (22) est moulé de préférence à partir d'un matériau élastomère et comporte un élément d'étanchéité, le second élément (24) étant moulé à partir de matériaux plastiques et pouvant constituer le collecteur du système de refroidissement d'un moteur de véhicule, intégrant l'élément d'étanchéité (22).
PCT/GB2000/002278 1999-06-11 2000-06-12 Fabrication d'articles Ceased WO2000076741A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55450/00A AU5545000A (en) 1999-06-11 2000-06-12 Fabrication of articles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9913648.3A GB9913648D0 (en) 1999-06-11 1999-06-11 Fabrication of articles
GB9913648.3 1999-06-11

Publications (1)

Publication Number Publication Date
WO2000076741A1 true WO2000076741A1 (fr) 2000-12-21

Family

ID=10855194

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/002278 Ceased WO2000076741A1 (fr) 1999-06-11 2000-06-12 Fabrication d'articles

Country Status (3)

Country Link
AU (1) AU5545000A (fr)
GB (1) GB9913648D0 (fr)
WO (1) WO2000076741A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422040A1 (fr) * 2002-11-25 2004-05-26 Tyco Electronics AMP GmbH Procédé et moule pour produire un article composite par moulage par injection
EP2039491A1 (fr) * 2007-09-19 2009-03-25 ifm Manfred Otte GmbH Procédé d'introduction d'un joint dans un élément de connexion enfichable

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5669138A (en) * 1979-11-12 1981-06-10 Furuya Kogyo Kk Synthetic resin multimaterial quality injection molding method and its laminated molding product
EP0031620A2 (fr) * 1979-12-21 1981-07-08 Wavin B.V. Procédé pour réunir une pièce de fixation en matière plastique, attachable à l'extrémité d'un tuyau, avec un élément d'étanchéité; pièce de fixation en matière plastique; tuyau en matière plastique pourvu de cette pièce de fixation et appareil pour mouler cette pièce de fixation
EP0078934A2 (fr) * 1981-11-06 1983-05-18 PREH, Elektrofeinmechanische Werke Jakob Preh Nachf. GmbH & Co. Procédé pour la fabrication d'une natte à contact
DE3820814A1 (de) * 1987-06-19 1989-01-05 Minolta Camera Kk Verbindungsanordnung aus harzformteilen und verfahren zur verbindung der harzformteile
EP0341880A2 (fr) * 1988-05-11 1989-11-15 Nissei Jushi Kogyo Kabushiki Kaisha Corps moulé par injection multiple, procédé de moulage et machine de moulage
FR2668095A1 (fr) * 1990-10-18 1992-04-24 Tabur Caoutchouc Procede de surmoulage d'au moins un joint d'etancheite sur une piece, outil de mise en óoeuvre et piece munie d'un tel joint.
US5160474A (en) * 1990-12-21 1992-11-03 Cadillac Rubber & Plastics, Inc. Overmolded gasket, heat exchanger tank incorporating the same and method for making the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5669138A (en) * 1979-11-12 1981-06-10 Furuya Kogyo Kk Synthetic resin multimaterial quality injection molding method and its laminated molding product
EP0031620A2 (fr) * 1979-12-21 1981-07-08 Wavin B.V. Procédé pour réunir une pièce de fixation en matière plastique, attachable à l'extrémité d'un tuyau, avec un élément d'étanchéité; pièce de fixation en matière plastique; tuyau en matière plastique pourvu de cette pièce de fixation et appareil pour mouler cette pièce de fixation
EP0078934A2 (fr) * 1981-11-06 1983-05-18 PREH, Elektrofeinmechanische Werke Jakob Preh Nachf. GmbH & Co. Procédé pour la fabrication d'une natte à contact
DE3820814A1 (de) * 1987-06-19 1989-01-05 Minolta Camera Kk Verbindungsanordnung aus harzformteilen und verfahren zur verbindung der harzformteile
EP0341880A2 (fr) * 1988-05-11 1989-11-15 Nissei Jushi Kogyo Kabushiki Kaisha Corps moulé par injection multiple, procédé de moulage et machine de moulage
FR2668095A1 (fr) * 1990-10-18 1992-04-24 Tabur Caoutchouc Procede de surmoulage d'au moins un joint d'etancheite sur une piece, outil de mise en óoeuvre et piece munie d'un tel joint.
US5160474A (en) * 1990-12-21 1992-11-03 Cadillac Rubber & Plastics, Inc. Overmolded gasket, heat exchanger tank incorporating the same and method for making the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 135 (M - 85) 27 August 1981 (1981-08-27) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422040A1 (fr) * 2002-11-25 2004-05-26 Tyco Electronics AMP GmbH Procédé et moule pour produire un article composite par moulage par injection
EP2039491A1 (fr) * 2007-09-19 2009-03-25 ifm Manfred Otte GmbH Procédé d'introduction d'un joint dans un élément de connexion enfichable
WO2009036945A1 (fr) * 2007-09-19 2009-03-26 Ifw Manfred Otte Gmbh Procédé permettant d'introduire un joint dans un connecteur à fiche

Also Published As

Publication number Publication date
AU5545000A (en) 2001-01-02
GB9913648D0 (en) 1999-08-11

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