FR2806343A1 - Encapsulated electronic assemblies use in vehicle, made by single injection molding step, are retained in mold so injected material strikes assembly directly - Google Patents
Encapsulated electronic assemblies use in vehicle, made by single injection molding step, are retained in mold so injected material strikes assembly directly Download PDFInfo
- Publication number
- FR2806343A1 FR2806343A1 FR0003389A FR0003389A FR2806343A1 FR 2806343 A1 FR2806343 A1 FR 2806343A1 FR 0003389 A FR0003389 A FR 0003389A FR 0003389 A FR0003389 A FR 0003389A FR 2806343 A1 FR2806343 A1 FR 2806343A1
- Authority
- FR
- France
- Prior art keywords
- insert
- mold
- tabs
- cavity
- parts
- 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.)
- Withdrawn
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
- B29C45/14—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
- B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
-
- 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
- B29C45/14065—Positioning or centering articles in the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
<U>Procédé de protection d'une étiquette électronique par</U> surmoulage L'invention concerne un procédé pour surmouler une matière plastique autour d'un insert, dans lequel on positionne l'insert sur une première partie d'un moule en au moins deux parties mobiles l'une par rapport - l'autre, on rapproche lesdites parties l'une de l'autre pour former une cavité de moulage contenant l'insert et on injecte la matière plastique dans la cavité par au moins une ouverture d'entrée. The invention relates to a method for overmolding a plastic material around an insert, in which the insert is positioned on a first part of a mold. at least two moving parts relative to one another - the other, bringing said parts closer to one another to form a molding cavity containing the insert and injecting the plastic into the cavity by at least one opening input.
Certains composants fragiles nécessitent un enrobage protec teur. Tel est le cas en particulier pour les étiquettes électroniques destinées à être solidarisées à un produit industriel tel qu'une pièce détachée automobile de manière à en garantir l'origine et/ou à mémoriser des informations relatives à celui-ci, en permettant lire ces informations à distance au moyen d'un lecteur approprié utilisant des ondes électromagnétiques. Une telle etiquette comprend une antenne sous forme d'une bobine de fil ou d'un circuit imprimé, reliée à un circuit intégre comportant une mémoire et un dispositif permettant une communication sans contact avec cette mémoire. Some fragile components require a protective coating. This is particularly the case for electronic tags intended to be secured to an industrial product such as an automotive spare part so as to guarantee the origin thereof and / or to memorize information relating thereto, allowing these to be read. remote information by means of an appropriate reader using electromagnetic waves. Such a label comprises an antenna in the form of a coil of wire or a printed circuit, connected to an integrated circuit comprising a memory and a device for communication without contact with this memory.
I1 est connu de réaliser l'enrobage 'une étiquette électro nique en plaçant celle-ci dans un réceptacle qu'on obture ensuite de manière étanche. Ce procedé nécessite plusieurs opérations consécutives, rendant l'automatisation et l'indus trialisation complexes. Un autre procédé connu consiste à inclure l'étiquette électronique dans le produit à identifier lors de la fabrication de celui-ci. procédé n'est utilisa ble que dans la mesure où cette fabrication n'implique pas la mise en oeuvre de températures élevees susceptibles d'endom mager l'étiquette. It is known to effect the coating of an electronic label by placing it in a receptacle which is then sealed. This process requires several consecutive operations, making automation and industrialization complex. Another known method is to include the electronic tag in the product to be identified during manufacture thereof. The process is only usable insofar as this manufacture does not involve the use of high temperatures liable to damage the label.
Le but de l'invention est de réaliser l'enrobage par une simple opération de surmoulage une matière plastique, tout en évitant d'endommager l'objet à surmouler par l'impact la matière plastique injectée à pression élevée. The object of the invention is to achieve the coating by a simple molding operation a plastic material, while avoiding damage to the object overmolding by the impact plastic material injected at high pressure.
invention vise notamment un procédé du genre défini en introduction, et prévoit qu'on positionne l'insert en 'appuyant contre une multiplicité de pattes appartenant à ladite première partie et réparties autour de l'insert, 'une ces pattes étant disposée en regard de l'ouverture entrée ou de chaque ouverture d'entrée de manière à empêcher que le jet de matière injectée frappe directement 'insert. The invention aims in particular at a method of the kind defined in the introduction, and provides that the insert is positioned by pressing against a multiplicity of tabs belonging to said first part and distributed around the insert, one of these tabs being arranged opposite the inlet opening or each inlet opening so as to prevent the jet of injected material strikes the insert directly.
caractéristiques optionnelles de l'invention, complemen- taires ou alternatives, sont énoncées ci-après: - Les pattes définissent une surface réceptrice légèrement évasée venant en contact avec le périmètre de l'insert pour le centrage de celui-ci. Optional features of the invention, additional or alternative, are set out below: - The tabs define a slightly flared receiving surface contacting the perimeter of the insert for centering thereof.
- Les pattes sont formées en saillie sur une surface de ladite première partie délimitant ladite cavité. - The tabs are formed projecting on a surface of said first portion defining said cavity.
- Certaines au moins des pattes présentent un épaulement tourné à l'opposé de ladite surface de la première partie pour maintenir une distance prédéterminée entre cette surface et l'insert. At least some of the tabs have a shoulder turned away from said surface of the first part to maintain a predetermined distance between this surface and the insert.
- Le moule définit une multiplicité de cavités de moulage disposées en couronne autour d'un point d'injection central, dont chacune reçoit un insert et est alimentée en matière plastique par deux canaux secondaires s'étendant dans la direction circonférentielle de la couronne et débouchant par ouvertures d'entrée opposées, chaque canal secondaire desservant par ses extrémités respectives deux cavités consécutives de la couronne et étant lui-même alimenté un canal principal s'étendant radialement à partir du point injection central et aboutissant sensiblement à mi-distance de ces deux cavités. - L'insert est une étiquette électronique propre à être solidarisée à un objet à identifier. - The mold defines a multiplicity of mold cavities arranged in a ring around a central injection point, each of which receives an insert and is fed with plastic material by two secondary channels extending in the circumferential direction of the crown and opening by opposite inlet openings, each secondary channel serving at its respective ends two consecutive cavities of the ring and being itself fed a main channel extending radially from the central injection point and terminating substantially midway between these two cavities. - The insert is an electronic tag to be secured to an object to be identified.
L'invention a également pour objet un moule d'injection utilisable pour la mise en oeuvre du procédé ci-dessus, comprenant au moins deux parties propres à être rapprochées l'une de l'autre pour former une cavité de moulage présentant au moins une ouverture d'entrée, ladite cavité enfermant multiplicité de pattes appartenant à l'une desdites parties et réparties autour d'une zone centrale, l'une de ces pattes étant disposée en regard de l'ouverture d'entrée ou de chaque ouverture d'entrée de manière à dévier un jet de matiere ectée à travers celle-ci. The subject of the invention is also an injection mold that can be used for carrying out the above method, comprising at least two parts adapted to be brought closer to one another to form a molding cavity having at least one inlet opening, said cavity enclosing a multiplicity of tabs belonging to one of said parts and distributed around a central zone, one of these tabs being disposed facing the inlet opening or each opening of entrance so as to deflect a jet of material ected through it.
caractéristiques et avantages de l'invention seront exposés plus en détail dans la description ci-après, en se reférant aux dessins annexés. The features and advantages of the invention will be set forth in more detail in the description below, referring to the accompanying drawings.
figure 1 est une vue en coupe transversale d'une cavité moulage contenant un insert à surmouler par le procédé selon invention. FIG. 1 is a cross-sectional view of a mold cavity containing an insert to be overmoulded by the method according to the invention.
figure 2 est une vue en coupe selon la ligne II-II de figure 1, l'insert étant omis. Figure 2 is a sectional view along the line II-II of Figure 1, the insert being omitted.
La figure 3 représente l'ensemble des empreintes de moulage et des canaux d'injection ménagés dans la seconde partie moule. Figure 3 shows the set of molding impressions and injection channels in the second mold part.
figures montrent partiellement un moule d'injection comprenant une première partie fixe 1 et une seconde partie mobile par rapport à la partie 1 selon la double flèche F la figure 1. Sur cette figure, le moule est représenté en position fermée, les parties 1 et 2 définissant entre elles cavités de moulage de contour sensiblement circulaire dont l'une est représentée sous la référence 3. La cavite 3 délimitée d'une part par une surface concave 4 en forme de cuvette de la partie 2, d'autre part par une surface plane 5 de la partie 1 présentant six saillies en direction de la surface 4. Quatre de ces saillies sont des pattes identiques 6 disposées uniformément selon des arcs de cercle autour de l'axe A de la cavité, d'autre part deux plots identiques 7 en forme de segments de cercle, disposés symétriquement par rapport l'axe A dans la région centrale de la cavité. L'insert surmouler, constitué par une étiquette électroni que 8, est représenté sous la forme d'un disque circulaire. Chacune des pattes 6 présente une surface 9 tournée vers l'axe A et légèrement inclinée par rapport celui-ci de manière à délimiter un logement pour l'insert 8 qui va en se rétrécissant vers la surface 5, jusqu'à un diamètre minimal correspondant au diamètre de l'insert, assurant ainsi un centrage de celui-ci. À son extrémité tournée vers la surface 5, la surface réceptrice 9 se raccorde à un épaulement 10 tourné à l'opposé de la surface 5, permettant un appui stable de l'insert à la fin du mouvement d'introduction de celui-ci, qui s'appuie alors également sur les plots 7. FIGS. partially show an injection mold comprising a first fixed part 1 and a second part movable with respect to the part 1 according to the double arrow F in FIG. 1. In this figure, the mold is represented in the closed position, the parts 1 and 2 defining between them molding cavities of substantially circular contour, one of which is represented under the reference 3. The cavity 3 delimited on the one hand by a concave surface 4 in the form of a bowl of the part 2, on the other hand by a flat surface 5 of the part 1 having six projections in the direction of the surface 4. Four of these projections are identical legs 6 arranged uniformly along arcs of circle about the axis A of the cavity, on the other hand two identical pads 7 in the form of segments of a circle, arranged symmetrically with respect to the axis A in the central region of the cavity. The insert overmold, consisting of an electronic tag 8, is shown in the form of a circular disc. Each of the lugs 6 has a surface 9 facing the axis A and slightly inclined relative thereto so as to delimit a housing for the insert 8 which tapers towards the surface 5, to a corresponding minimum diameter to the diameter of the insert, thus ensuring a centering thereof. At its end facing the surface 5, the receiving surface 9 is connected to a shoulder 10 turned away from the surface 5, allowing a stable support of the insert at the end of the insertion movement thereof, which is also based on the studs 7.
La matière plastique est admise dans la cavité 3 par deux orifices 11 situés en des points diamétralement opposés, en regard de deux des pattes 6, lesquelles empêchent les jets de matière injectée de frapper directement l'insert. La matière ne peut donc atteindre d'insert qu'en contournant les pattes 6, d'une part le long de la surface 4, en passant entre celle-ci et les pattes, selon les flèches F1 de la figure 1, d'autre part circonférentiellement selon les flèches F2 de la figure 2. La pression de la matière injectée entre la surface 4 et l'insert 8 contribue à plaquer celui-ci contre les épaulements 10 et les plots 7. I1 est également possible de prévoir sur la surface 4 des saillies non représentées venant en appui sur la face de l'insert tournée à l'opposé des épaulements 10 et des plots 7, l'insert étant emprisonné dans la direction axiale, lors de la fermeture du moule, entre ces saillies et lesdits épaulements et plots. Il est également envisageable de supprimer les plots 7, si les épaulements 10 assurent un appui suffisant. Par ailleurs, l'insert 8 peut être maintenu en place si nécessaire, avant la fermeture du moule, en le fixant aux pattes 6 et/ou aux plots 7 au moyen d'une ou plusieurs gouttes de colle instantanée.The plastic is admitted into the cavity 3 by two orifices 11 located at diametrically opposite points, opposite two of the tabs 6, which prevent the jets of injected material from striking the insert directly. The material can therefore reach insert only bypassing the legs 6, firstly along the surface 4, passing between it and the legs, according to the arrows F1 of Figure 1, other circumferentially part according to the arrows F2 of Figure 2. The pressure of the injected material between the surface 4 and the insert 8 contributes to press the latter against the shoulders 10 and the pads 7. It is also possible to provide on the surface 4 unrepresented projections bearing on the face of the insert turned away from the shoulders 10 and the pads 7, the insert being trapped in the axial direction, during the closure of the mold, between these projections and said shoulders and pads. It is also conceivable to remove the pads 7, if the shoulders 10 provide sufficient support. Moreover, the insert 8 can be held in place if necessary, before closing the mold, by fixing it to the tabs 6 and / or the pads 7 by means of one or more drops of instant adhesive.
La figure 3 montre les surface en cuvette 4 délimitant huit cavités de moulage d'un même moule d'injection, et les canaux d'injection alimentant ces cavités, ces cuvettes et ces canaux étant ménagés dans une surface plane de la partie mobile 2 du moule. Huit canaux rectilignes 12 s'étendent radialement partir d'un point central d'injection 13, et chacun d'eux se raccorde à son extrémité extérieure 14 à un canal secondaire 15 s'étendant sensiblement dans la direction circonférentielle de part et d'autre de l'extremité 14. Huit cuvettes 4 sont prévues, disposées chacune entre les extrémi tés 14 de deux canaux 12 voisins, et dans chacune d'elles débouchent, en des points 11 diamétralement opposés, les extrémités de deux canaux secondaires 15. 'ensemble des canaux et des cuvettes présente une symétrie de répétition d'ordre huit autour du point 13. FIG. 3 shows the bowl surfaces 4 delimiting eight molding cavities of the same injection mold, and the injection channels feeding these cavities, these cuvettes and these channels being formed in a flat surface of the movable part 2 of the same mold. Eight rectilinear channels 12 extend radially from a central injection point 13, and each of them is connected at its outer end 14 to a secondary channel 15 extending substantially in the circumferential direction on either side 14. Eight cuvettes 4 are provided, each disposed between the ends 14 of two adjacent channels 12, and in each of them, at diametrically opposite points, open the ends of two secondary channels 15. 'together channels and cuvettes have an eightfold repeat symmetry around point 13.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR0003389A FR2806343A1 (en) | 2000-03-16 | 2000-03-16 | Encapsulated electronic assemblies use in vehicle, made by single injection molding step, are retained in mold so injected material strikes assembly directly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0003389A FR2806343A1 (en) | 2000-03-16 | 2000-03-16 | Encapsulated electronic assemblies use in vehicle, made by single injection molding step, are retained in mold so injected material strikes assembly directly |
Publications (1)
Publication Number | Publication Date |
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FR2806343A1 true FR2806343A1 (en) | 2001-09-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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FR0003389A Withdrawn FR2806343A1 (en) | 2000-03-16 | 2000-03-16 | Encapsulated electronic assemblies use in vehicle, made by single injection molding step, are retained in mold so injected material strikes assembly directly |
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FR (1) | FR2806343A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2890590A1 (en) * | 2005-09-13 | 2007-03-16 | Central Labo Europ Sarl | DEVICE FOR ENCAPSULATING A PLURALITY OF ELECTRONIC IDENTIFICATION LABEL |
CH703121A1 (en) * | 2010-05-10 | 2011-11-15 | Weidmann Plastics Tech Ag | A method for producing a prepared a sheet-like electronic element having plastic container, plastic container according to this method, as well as injection molding tool for carrying out the method. |
EP2386400A1 (en) * | 2010-05-11 | 2011-11-16 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having antenna pattern frame embedded therein, mold therefor and method of manufacturing thereof |
EP2386401A1 (en) * | 2010-05-11 | 2011-11-16 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having antenna pattern embedde therein, and mold therefor and mthod of manufacturing thereof |
US8773314B2 (en) | 2010-02-25 | 2014-07-08 | Samsung Electro-Mechanics Co., Ltd. | Antenna pattern frame, case of electronic device and mould for manufacturing the same |
US8976074B2 (en) | 2010-05-11 | 2015-03-10 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having low frequency antenna pattern embedded therein, mold therefor and method of manufacturing thereof |
EP3505325B1 (en) * | 2017-12-27 | 2020-09-23 | SULO France | Support for insert for injection mould of a collection container |
EP3630441A4 (en) * | 2017-05-23 | 2020-12-23 | MI Intégration S.E.N.C. | Apparatus and method for in-mold substrate binding to articles manufactured by injection molding |
EP3884914A1 (en) * | 2014-09-09 | 2021-09-29 | Qpharma AB | An overmouldable substrate and uses thereof |
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JPS57178838A (en) * | 1981-04-30 | 1982-11-04 | Nippon Plast Co Ltd | Manufacture of molding with insert nut |
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US2193935A (en) * | 1937-07-15 | 1940-03-19 | Erie Resistor Corp | Machine for die-casting bezels for fragile inserts |
JPS57178838A (en) * | 1981-04-30 | 1982-11-04 | Nippon Plast Co Ltd | Manufacture of molding with insert nut |
JPS62221521A (en) * | 1986-03-25 | 1987-09-29 | Toyoda Gosei Co Ltd | Insert molding method |
JPH01141710A (en) * | 1987-11-30 | 1989-06-02 | Hashimoto Forming Ind Co Ltd | Method for manufacturing elongated molding having core member |
WO1993001616A1 (en) * | 1991-07-10 | 1993-01-21 | Valtion Teknillinen Tutkimuskeskus | Method and mould for the manufacture of an injection moulded electronics module |
Non-Patent Citations (3)
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PATENT ABSTRACTS OF JAPAN vol. 012, no. 081 (M - 676) 15 March 1988 (1988-03-15) * |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007031644A1 (en) * | 2005-09-13 | 2007-03-22 | Nicolas Bara | Device for encapsulating a plurality of electronic identification tags |
FR2890590A1 (en) * | 2005-09-13 | 2007-03-16 | Central Labo Europ Sarl | DEVICE FOR ENCAPSULATING A PLURALITY OF ELECTRONIC IDENTIFICATION LABEL |
US8773314B2 (en) | 2010-02-25 | 2014-07-08 | Samsung Electro-Mechanics Co., Ltd. | Antenna pattern frame, case of electronic device and mould for manufacturing the same |
US9908271B2 (en) | 2010-05-10 | 2018-03-06 | Weidman Medical Technology AG | Method for producing a plastic container having a two-dimensionally extending electronic element, plastic container produced according to said method and injection mold for carrying out the method |
WO2011140666A1 (en) * | 2010-05-10 | 2011-11-17 | Weidmann Plastics Technology Ag | Method for producing a plastic container having a planar electronic element, plastic container produced according to said method, and injection mold for carrying out the method |
US9211665B2 (en) | 2010-05-10 | 2015-12-15 | Weidmann Medical Technology Ag | Method for producing a plastic container having a planar electronic element, plastic container produced according to said method, and injection mold for carrying out the method |
CH703121A1 (en) * | 2010-05-10 | 2011-11-15 | Weidmann Plastics Tech Ag | A method for producing a prepared a sheet-like electronic element having plastic container, plastic container according to this method, as well as injection molding tool for carrying out the method. |
EP2386401A1 (en) * | 2010-05-11 | 2011-11-16 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having antenna pattern embedde therein, and mold therefor and mthod of manufacturing thereof |
CN102244991A (en) * | 2010-05-11 | 2011-11-16 | 三星电机株式会社 | Case of electronic device having antenna pattern embedde therein, and mold therefor and method of manufacturing thereof |
US8711041B2 (en) | 2010-05-11 | 2014-04-29 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having antenna pattern embedded therein and mold and method for manufacturing the same |
EP2386400A1 (en) * | 2010-05-11 | 2011-11-16 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having antenna pattern frame embedded therein, mold therefor and method of manufacturing thereof |
US8976074B2 (en) | 2010-05-11 | 2015-03-10 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having low frequency antenna pattern embedded therein, mold therefor and method of manufacturing thereof |
US9266266B2 (en) | 2010-05-11 | 2016-02-23 | Samsung Electro-Mechanics Co., Ltd. | Case of electronic device having antenna pattern frame embedded therein, mold therefor and method of manufacturing thereof |
EP3884914A1 (en) * | 2014-09-09 | 2021-09-29 | Qpharma AB | An overmouldable substrate and uses thereof |
EP3630441A4 (en) * | 2017-05-23 | 2020-12-23 | MI Intégration S.E.N.C. | Apparatus and method for in-mold substrate binding to articles manufactured by injection molding |
EP3505325B1 (en) * | 2017-12-27 | 2020-09-23 | SULO France | Support for insert for injection mould of a collection container |
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