FR2757794A1 - Flexible moulding equipment producing item of covered or plain automobile interior trim - Google Patents

Flexible moulding equipment producing item of covered or plain automobile interior trim Download PDF

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Publication number
FR2757794A1
FR2757794A1 FR9616306A FR9616306A FR2757794A1 FR 2757794 A1 FR2757794 A1 FR 2757794A1 FR 9616306 A FR9616306 A FR 9616306A FR 9616306 A FR9616306 A FR 9616306A FR 2757794 A1 FR2757794 A1 FR 2757794A1
Authority
FR
France
Prior art keywords
nozzle
cavity
interior trim
injection
plain
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.)
Granted
Application number
FR9616306A
Other languages
French (fr)
Other versions
FR2757794B1 (en
Inventor
Yves Vigneron
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR9616306A priority Critical patent/FR2757794B1/en
Publication of FR2757794A1 publication Critical patent/FR2757794A1/en
Application granted granted Critical
Publication of FR2757794B1 publication Critical patent/FR2757794B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B29C45/14—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
    • B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221—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 the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
    • 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
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14967—Injecting through an opening of the insert
    • B29C2045/14975—Injecting through an opening of the insert the injection nozzle penetrating through the insert

Abstract

A unit which moulds and finishes an item of car interior cladding with decorative covering comprises a matrix (3) with a hollow or cavity (5) section which includes the exit orifice (10) and injection nozzle (9) of an injection channel (6) for the plastic material. The tip of the nozzle extends into the moulding cavity. Its tip has a cutting section (11), which comes into play as the upper die (4) closes down onto the matrix. Preferably the cutting edge (11) extends around the periphery of the nozzle tip, and includes notches (12) assisting diffusion of plastic into the moulding cavity.

Description

DISPOSITIF DE MOULAGE ET DE FINITION D'UNE PIECE
D'HABILLAGE INTéRIEUR DE VEHICULE AUTOMOBILE
MUNIE D'UN REVETEMENT DECORATIF
L'invention concerne un dispositif de moulage et de finition d'une pièce rhabillage intérieur de véhicule automobile munie d'un revêtement décoratif.DEVICE FOR MOLDING AND FINISHING A WORKPIECE
OF INTERIOR TRIM OF MOTOR VEHICLE
PROVIDED WITH A DECORATIVE COATING
The invention relates to a device for molding and finishing an interior trim part of a motor vehicle provided with a decorative coating.

L'invention trouve plus particulièrement application dans le domaine des dispositifs de moulage de pièces en matière plastique qui portent le cas échéant un tel revêtement.The invention finds more particularly application in the field of devices for molding plastic parts which, where appropriate, carry such a coating.

La publication FR-A-2688442 décrit un exemple de réalisation d'un dispositif de moulage incluant un moule constitué par une matrice qui possède une partie creuse dans laquelle débouche un conduit d'injection d'une matière plastique.Publication FR-A-2688442 describes an exemplary embodiment of a molding device including a mold constituted by a matrix which has a hollow part into which opens a plastic injection pipe.

Lorsque la pièce porte un revêtement décoratifs ce dernier est préalablement déposé dans la cavité de la matrice et adhère à la matière à la suite de l'injection de celle-ci dans le moule.When the part has a decorative coating, the latter is previously deposited in the cavity of the matrix and adheres to the material following the injection of the latter into the mold.

Toutefois lorsque la pièce d'habillage ne porte aucun revêtement additionnel, il importe d'adapter le dispositif de moulage aux différentes variantes de réalisation de telles pièces.However, when the covering part does not carry any additional coating, it is important to adapt the molding device to the different embodiments of such parts.

Les transformations d'outillage génèrent dans ce cas des coûts d'exploitation souvent incompatibles avec les quantités de pièces fabriquées.Tool conversions in this case generate operating costs that are often incompatible with the quantities of parts manufactured.

L'invention a pour objet un dispositif de moulage incluant une matrice dont la partie creuse porte l'orifice de sortie d'un canal d'injection d'une matière plastique et une buse d'injection immobilisée dans ledit orifice.The subject of the invention is a molding device including a die, the hollow part of which carries the outlet orifice of a plastic injection channel and an injection nozzle immobilized in said orifice.

Selon l'invention l'extrémité de la buse s'étend dans le canal d'alimentation de la cavité de formation de la pièce rhabillage et possède une arête de coupe
opérative au contact du revêtement décoratif lors de la fermeture de la matrice par le poinçon du dispositif de moulage.According to the invention the end of the nozzle extends into the supply channel of the formation cavity of the covering part and has a cutting edge
operative in contact with the decorative coating when the die is closed by the punch of the molding device.

Selon une autre caractéristique du dispositif, I'arrêt de coupe s'étend à la périphérie de l'extrémité de la buse et possède des encoches de diffùsion de la matière plastique. According to another characteristic of the device, the cutting stop extends around the periphery of the end of the nozzle and has notches for diffusing the plastic material.

Le dispositif ainsi réalisé possède l'avantage de faciliter la confection de pièces d'habillage nues ou portant un revêtement décoratif.The device thus produced has the advantage of facilitating the preparation of naked trim pieces or those bearing a decorative coating.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description d'un exemple de réalisation du dispositif de moulage en référence aux dessins annexés dans lesquels - la figure 1 est une représentation schématique du dispositif de moulage, - la figure 2 est une représentation à une plus grande échelle de la buse
d'injection utilisée par le dispositif, - la figure 3 est une représentation perspective de l'extrémité de la buse
d'injection, - la figure 4 représente une section partielle de la pièce rhabillage munie
d'un revêtement décoratif réalisée à l'aide du dispositif
La pièce d'habillage représentée à la figure 4 est constituée par un support thermoplastique I portant un revêtement 7. La pièce est obtenue au cours d'un processus de moulage d'une matière thermoplastique préalablement injectée dans un moule 2.Other characteristics and advantages of the invention will appear on reading the description of an exemplary embodiment of the molding device with reference to the accompanying drawings in which - Figure 1 is a schematic representation of the molding device, - Figure 2 is an enlarged representation of the nozzle
injection used by the device, - Figure 3 is a perspective representation of the end of the nozzle
injection, - Figure 4 shows a partial section of the dressing part provided
a decorative covering produced using the device
The covering part shown in FIG. 4 consists of a thermoplastic support I carrying a coating 7. The part is obtained during a molding process of a thermoplastic material previously injected into a mold 2.

Comme représenté à la figure 1 le moule 2 est constitué par une matrice 3 et par un poinçon 4. As shown in FIG. 1, the mold 2 is constituted by a die 3 and by a punch 4.

La matrice 3 possède une cavité 5 de formation de la pièce constituée par une partie creuse ou cavité 5 dans laquelle débouche le conduit d'injection 6 d'une matière thermoplastique.The matrix 3 has a cavity 5 for forming the part constituted by a hollow part or cavity 5 into which opens the injection pipe 6 of a thermoplastic material.

Un revêtement décoratif 7 formé à titre d'exemple par une feuille étirable recouvre la partie creuse 5.A decorative covering 7 formed, for example, by a stretchable sheet covers the hollow part 5.

Un organe de calage déplaçable assure le cas échéant la couverture d'une face de la pièce 1 par le revêtement. Après refroidissement de la pièce 1, on déplace ledit organe de calage dans le sens d'une libération du bord de la pièce 1 lors de l'ouverture du moule.A displaceable wedging member ensures, if necessary, the covering of one face of the part 1 by the covering. After the part 1 has cooled, the said wedging member is moved in the direction of release of the edge of the part 1 when the mold is opened.

Au cours de l'injection, la matière plastique est amenée dans le moule au travers d'une buse 9 immobilisée dans l'orifice de sortie 10 du canal d'injection 6.During the injection, the plastic material is brought into the mold through a nozzle 9 immobilized in the outlet orifice 10 of the injection channel 6.

Selon l'invention l'extrémité de la buse 9 s'étend ainsi que cela est représenté à la figure 2 dans un canal d'alimentation 5A de la cavité 5.According to the invention, the end of the nozzle 9 extends as shown in FIG. 2 in a supply channel 5A of the cavity 5.

Selon une caractéristique de l'invention la buse 9 possède une arête de coupe 1 1 rendue opérative lors de la fermeture de la matrice 3 par le poinçon 4.According to a characteristic of the invention, the nozzle 9 has a cutting edge 1 1 made operative when the die 3 is closed by the punch 4.

Lorsque le moule contient un revêtement décoratif la fermeture du moule a pour effet d'appliquer le revêtement sur l'arête de coupe 11 si bien que celleci perce localement le revêtement 7 ainsi que cela est montré à la figure 2.When the mold contains a decorative coating, closing the mold has the effect of applying the coating to the cutting edge 11 so that it locally pierces the coating 7 as shown in FIG. 2.

La figure 3 montre que l'arête de coupe 11 s'étend à la périphérie de l'extrémité de la buse et possède des encoches 12 de diffision de la matière plastique dans la cavité 5 ou dans le canal d'alimentation 5A.FIG. 3 shows that the cutting edge 11 extends around the periphery of the end of the nozzle and has notches 12 for diffusing the plastic material into the cavity 5 or into the supply channel 5A.

Au cours de rinjection, la matière thermoplastique est uniformément introduite par le canal 6 répartie au contact du revêtement 7. During the injection, the thermoplastic material is uniformly introduced through the channel 6 distributed in contact with the coating 7.

A la suite du refroidissement de la pièce, il est possible d'ouvrir le moule. Le poinçon 4 se soulève avec les éventuelles cales dans le but de libérer le bord 8 du revêtement 7.After the part has cooled, it is possible to open the mold. The punch 4 is raised with the possible shims in order to free the edge 8 of the covering 7.

A cet effet, les cales 20 sont montées à l'extrémité des tiges 13 des vérins hydrauliques 14 à double effet pilotés par des distributeurs 15 à commande électrique.To this end, the shims 20 are mounted at the end of the rods 13 of the double-acting hydraulic jacks 14 controlled by distributors 15 with electrical control.

Le vérin 14 est fixé au poinçon 4 et sa tige 13 s'étend au travers du poinçon 4 jusqu'à la matrice 3.The jack 14 is fixed to the punch 4 and its rod 13 extends through the punch 4 to the die 3.

Le distributeur 15 est actionné par un contacteur fin de course 16 sous l'action de la poussée poinçon 4 à l'ouverture et à la fermeture du moule.The distributor 15 is actuated by a limit switch 16 under the action of the punch punch 4 when the mold is opened and closed.

La figure 1 représente schématiquement le circuit de commande du vérin 14 dans lequel une motopompe alimente le distributeur 15 d'alimentation des chambres de fluide du vérin 14 au cours de la fermeture du contacteur 16.FIG. 1 schematically represents the control circuit of the jack 14 in which a motor-driven pump supplies the distributor 15 supplying the fluid chambers of the jack 14 during the closing of the contactor 16.

Sans sortir du cadre de l'invention il sera bien entendu possible de faire travailler de manière synchrone plusieurs vérins 14 en fonction du degré de finition souhaité de la pièce d'habillage. Without departing from the scope of the invention, it will of course be possible to make several cylinders 14 work synchronously as a function of the desired degree of finish of the covering part.

Claims (2)

REVEND ICATIONS  RESELL ICATIONS lors de la fermeture de la matrice (3) par le poinçon (4). when the die (3) is closed by the punch (4). la pièce d'habillage et possède une arête de coupe (11) rendue opérative the covering part and has a cutting edge (11) made operational fait que l'extrémité de la buse (9) s'étend dans la cavité (5) de formation de causes the end of the nozzle (9) to extend into the cavity (5) for forming matière plastique au travers d'une buse d'injection (9), caractérisé par le plastic material through an injection nozzle (9), characterized by cavité (5) qui porte l'orifice de sortie (10) d'un canal d'injection (6) d'une cavity (5) which carries the outlet orifice (10) of an injection channel (6) of a moule (2) constitué par une matrice (3) possède une partie creuse ou mold (2) consisting of a matrix (3) has a hollow part or véhicule automobile munie d'un revêtement décoratif dans lequel un motor vehicle fitted with a decorative coating in which a I) Dispositif de moulage et de finition d'une pièce d'habillage intérieur deI) Molding and finishing device for an interior trim piece of 2) Dispositif selon la revendication 1, caractérisé par le fait que l'arête de2) Device according to claim 1, characterized in that the edge of coupe (11) s'étend à la périphérie de l'extrémité de la buse (9) et possède cup (11) extends around the periphery of the end of the nozzle (9) and has des encoches de diffusion (12) de la matière plastique dans la cavité (5) de diffusion notches (12) of the plastic material in the cavity (5) of formation de la pièce.  part formation.
FR9616306A 1996-12-31 1996-12-31 DEVICE FOR MOLDING AND FINISHING AN INTERIOR COVER OF A MOTOR VEHICLE PROVIDED WITH A DECORATIVE COVERING Expired - Fee Related FR2757794B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9616306A FR2757794B1 (en) 1996-12-31 1996-12-31 DEVICE FOR MOLDING AND FINISHING AN INTERIOR COVER OF A MOTOR VEHICLE PROVIDED WITH A DECORATIVE COVERING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9616306A FR2757794B1 (en) 1996-12-31 1996-12-31 DEVICE FOR MOLDING AND FINISHING AN INTERIOR COVER OF A MOTOR VEHICLE PROVIDED WITH A DECORATIVE COVERING

Publications (2)

Publication Number Publication Date
FR2757794A1 true FR2757794A1 (en) 1998-07-03
FR2757794B1 FR2757794B1 (en) 1999-01-22

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FR9616306A Expired - Fee Related FR2757794B1 (en) 1996-12-31 1996-12-31 DEVICE FOR MOLDING AND FINISHING AN INTERIOR COVER OF A MOTOR VEHICLE PROVIDED WITH A DECORATIVE COVERING

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008151813A1 (en) 2007-06-14 2008-12-18 Akzo Nobel Coatings International B.V. A paint dispensing nozzle arrangement
FR3076243A1 (en) * 2017-12-29 2019-07-05 Compagnie Plastic Omnium PROCESS FOR PRODUCING A PLASTIC MOLDED PART WITH INTEGRATED SUPPORT COMPONENTS
EP3578355A1 (en) * 2018-06-08 2019-12-11 Gemini Group, Inc. Method of manufacturing a load structure
EP3919266A1 (en) * 2018-06-08 2021-12-08 Gemini Group, Inc. Honeycomb load structure with over mold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684502A (en) * 1949-09-30 1954-07-27 Paulve Marcel Luc Amedee Method of making cartridges
FR2575961A1 (en) * 1985-01-11 1986-07-18 Hebert Fils Paul Process for manufacturing an article made from a thermoplastic material with insertion into the latter of a film or the like, and device for its implementation
US4783298A (en) * 1986-01-08 1988-11-08 Mazda Motor Corporation In-mold coating method and apparatus
JPS6424714A (en) * 1987-07-21 1989-01-26 Nihon Plast Co Ltd Insert molding process and mold for insert molding
US4956139A (en) * 1987-10-06 1990-09-11 Canon Denshi Kabushiki Kaisha Method of producing an exposure blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684502A (en) * 1949-09-30 1954-07-27 Paulve Marcel Luc Amedee Method of making cartridges
FR2575961A1 (en) * 1985-01-11 1986-07-18 Hebert Fils Paul Process for manufacturing an article made from a thermoplastic material with insertion into the latter of a film or the like, and device for its implementation
US4783298A (en) * 1986-01-08 1988-11-08 Mazda Motor Corporation In-mold coating method and apparatus
JPS6424714A (en) * 1987-07-21 1989-01-26 Nihon Plast Co Ltd Insert molding process and mold for insert molding
US4956139A (en) * 1987-10-06 1990-09-11 Canon Denshi Kabushiki Kaisha Method of producing an exposure blade

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 202 (M - 824)<3550> 12 May 1989 (1989-05-12) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008151813A1 (en) 2007-06-14 2008-12-18 Akzo Nobel Coatings International B.V. A paint dispensing nozzle arrangement
US8863787B2 (en) 2007-06-14 2014-10-21 Akzo Nobel Coatings International B.V. Paint dispensing nozzle arrangement
FR3076243A1 (en) * 2017-12-29 2019-07-05 Compagnie Plastic Omnium PROCESS FOR PRODUCING A PLASTIC MOLDED PART WITH INTEGRATED SUPPORT COMPONENTS
EP3578355A1 (en) * 2018-06-08 2019-12-11 Gemini Group, Inc. Method of manufacturing a load structure
EP3919266A1 (en) * 2018-06-08 2021-12-08 Gemini Group, Inc. Honeycomb load structure with over mold
US11331894B2 (en) 2018-06-08 2022-05-17 Gemini Group, Inc. Method of manufacturing a load structure
US11465379B2 (en) 2018-06-08 2022-10-11 Gemini Group, Inc. Honeycomb load structure with over mold

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Publication number Publication date
FR2757794B1 (en) 1999-01-22

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Effective date: 20120831