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EP2030228A1 - Procédé de production d'une pièce moulée par injection comprenant une carte imprimée souple intégrée - Google Patents

Procédé de production d'une pièce moulée par injection comprenant une carte imprimée souple intégrée

Info

Publication number
EP2030228A1
EP2030228A1 EP07725393A EP07725393A EP2030228A1 EP 2030228 A1 EP2030228 A1 EP 2030228A1 EP 07725393 A EP07725393 A EP 07725393A EP 07725393 A EP07725393 A EP 07725393A EP 2030228 A1 EP2030228 A1 EP 2030228A1
Authority
EP
European Patent Office
Prior art keywords
printed circuit
circuit board
cavity
carrier strip
mold
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Withdrawn
Application number
EP07725393A
Other languages
German (de)
English (en)
Inventor
Hans-Georg Huonker
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.)
Hansa tronic GmbH
Original Assignee
Hansa tronic 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 Hansa tronic GmbH filed Critical Hansa tronic GmbH
Publication of EP2030228A1 publication Critical patent/EP2030228A1/fr
Withdrawn legal-status Critical Current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
    • B29C45/1671—Making multilayered or multicoloured articles with an insert
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
    • H01L21/565—Moulds
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
    • 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
    • B29C45/14639—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 for obtaining an insulating effect, e.g. for electrical components
    • B29C45/14655—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 for obtaining an insulating effect, e.g. for electrical components connected to or mounted on a carrier, e.g. lead frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/0393—Flexible materials
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/01—Tools for processing; Objects used during processing
    • H05K2203/0147—Carriers and holders
    • H05K2203/0169—Using a temporary frame during processing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
    • H05K2203/1305—Moulding and encapsulation
    • H05K2203/1327—Moulding over PCB locally or completely

Definitions

  • the invention relates to a method for producing a Sp ⁇ tzgussteils with integrated flexible circuit board.
  • the Umsp ⁇ tzen of flexible circuit boards has long been known from the prior art.
  • individual flexible circuit boards are placed in a cavity and molded with plastic.
  • the object is achieved by a) that to be provided with a sheath of plastic flexible printed circuit boards by edge projecting
  • a flexible printed circuit board can be processed into a finished plastic component in a continuous or incremental production process, it being ensured that the printed circuit boards occupy the same predetermined position in the finished plastic parts.
  • the carrier strip used in this case in the recesses of which the printed circuit boards are received, it is also possible in a simple manner to position and hold the printed circuit boards in the respective casting mold.
  • the dimensions of these recesses are the dimensions of the surface shape of the flexible printed circuit board and the
  • the peripheral edges of the circuit boards are each provided with outwardly projecting formed as mounting tabs support elements.
  • the mounting tongues are each provided with depressions.
  • the mounting tongues are glued or welded to the longitudinal and transverse bands.
  • a plurality of flexible printed circuit boards to be encapsulated can be successively arranged and fixed in the rows of recesses of the carrier strip which are provided in rows, so that they can be successively fed to a correspondingly formed injection mold in a step-by-step working process.
  • circuit boards are successively molded in each case in a first casting only on the one flat side with a first envelope half, the risk that the circuit board is exposed to large, destructive, unilateral compressive forces in such an injection process is largely avoided, in which the circuit board can create and support itself on a flat counter-pressure surface on the flat side facing the cavity.
  • a negative pressure can be applied for fixing the printed circuit board to the planar molded part of the injection molding cavity so that the flexible printed circuit board is pulled against the wall of this flat mold half of the injection mold cavity.
  • a half of the envelope is sprayed around the flexible circuit board.
  • a second wrapping half is molded on top of the flexible printed circuit board and on the first wrapping half, so that subsequently a finished component with integrated flexible printed circuit board is produced.
  • the production of a plastic component with integrated flexible printed circuit board can be produced in a continuous stepwise continuous operation.
  • Figure 1 shows a portion of a stamped carrier strip together with a flexible circuit board in an exploded perspective view.
  • Figure 2 shows the carrier strip portion of Figure 1 with a plurality of printed circuit boards.
  • FIG. 3 shows a mold half with a cavity, which serves for molding a wrapping half to a flexible printed circuit board
  • FIG. 4 shows schematically the mold half of Figure 3 with the patch carrier strip portion of FIG 2 and a not yet in the closed position closure closure member in a perspective view ..;
  • FIG. 5 shows the carrier strip section from FIG. 4 with two printed circuit boards which are overmolded on the underside with respect to FIG. 4 by one transport step;
  • Fig. 6 shows schematically the carrier strip portion of Fig. 5 with a lower and top side finished overmolded
  • Fig. 7 in a schematically simplified, isometric exploded view of a double injection mold with two single-sided over-printed circuit boards.
  • Fig. 1 shows a carrier strip 1, which may be made for example of a paper web, a metal sheet or other thin, flexible material.
  • This carrier strip 1 could also be made of a plastic tape.
  • this carrier strip 1 is provided with a plurality of recesses 2, which have a square surface shape in the present embodiment.
  • the carrier strip 1 forms two mutually parallel longitudinal bands 3 and 4, which are interconnected by a plurality of transverse bands 5.
  • the longitudinal strips 3 are provided with impressed depressions 6 and 7.
  • the transverse bands 5 each have a recess 8.
  • the recesses 2 are used to receive a flexible printed circuit board 9, which in the present embodiment, the edge side, ie at their longitudinal and transverse edge Edges 10 and 11 or 12 and 13 are each provided with support elements in the form of outwardly projecting mounting tongue 14, 15, 16 and 17 respectively.
  • the flexible printed circuit board 9 has two bores 18 and 19 within its base area between the two mounting tongues 16 and 17.
  • the circuit board 9 is according to the number of recesses 2 of the carrier strip 1, in which it is used in each case, multiple times.
  • the flexible circuit boards 9 are each individually in one of the recesses 2 of the
  • Carrier strip 1 arranged. It can also be seen that the marginal edges 10 bil3 each have a lateral distance from the longitudinal and transverse bands 3, 4 and 5 of the carrier strip 1.
  • the mounting tabs 14 and 15 protrude into the respectively associated recesses 6 and 7 of the longitudinal strips 3 and 4 fitting into it.
  • the mounting tabs 16 and 17, however, project in the mounted state fits into the recesses 8 of the transverse bands 5, as shown in FIG. 2 can be seen.
  • the printed circuit boards 9 via their mounting tabs 14, 15, 16 and 17 on the longitudinal strips 3, 4 and the transverse bands 5, for example by means of an adhesive bond or a welded connection or a different kind, essentially automatically produced connection firmly fixed.
  • the method according to the invention also includes the use of a carrier strip 1, which is provided with recesses 2, in each of which a printed circuit board 9 is used individually.
  • the integrally formed on the circuit boards 9 mounting tabs 14, 15, 16 and 17 are initially used to center the circuit boards 9 in each case in a recess 2 with around substantially the same distance from the longitudinal and transverse bands 3, 4 and 5, wherein the suitable into the ments 6, 7 and 8 of the carrier strip 1 seated mounting tabs 14 to 17 in these recesses 6, 7 and 8 by a preferably cohesive connection, such as gluing or welding, are attached.
  • the carrier strip provided with the printed circuit boards 9 forms an "endless belt" of rows of successively arranged flexible printed circuit boards 9 so that these printed circuit boards 9 successively in a continuous, step-by-step processing process can be encapsulated successively to a finished component NEN.
  • FIG. 3 shows by way of example and schematically simplified an embodiment of a lower mold half 20, which has an inner cavity 21 whose shape corresponds to the outer contour of a later casing half 39.
  • the mold half 20 is provided with a peripheral circumferential web 22 projecting upwards about the thickness of the carrier strip 1.
  • This edge web is subdivided into longitudinally extending sections 23 and 24 as well as into transverse sections 25 and 26. In these sections 23, 24, 25 and 26, depressions 28, 29, 30 and 31 are arranged centrally in each case.
  • These recesses 28, 29, 30 and 31 are matched both with respect to their surface shape and with respect to their depth to the mounting tabs 14 to 17, so that they are flush within each of the longitudinal and transverse bands of the carrier strip portions of the mounting tabs 14 to 17 and absorb laterally fitting and thereby determine the position of a circuit board 9 in the cavity of the mold half.
  • the recesses 2 are dimensioned so that they can accommodate the peripheral edge web 22.
  • the inner dimensions of the cavity 21 and the peripheral edge web 22 are in turn so chosen that between its lateral inner surfaces and the marginal edges 10 to 13 a sufficient distance 32 remains, which allows a sufficiently thick-walled encapsulation of these marginal edges 10 to 13.
  • a second upper mold half 35 is provided, which in the present embodiment, the first mold half 20 toward a lower flat boundary surface 36 has.
  • this boundary surface 36 two cylinder bores 37 are provided in the present embodiment, the arrangement is congruent to the two holes 18 and 19 of the circuit board.
  • a first lower envelope half 38 is injection-molded onto the printed circuit board 9, as can be seen in particular from FIGS. 5 and 7.
  • a portion of a carrier strip 1 is shown with a total of three printed circuit boards 9 in a position in which the carrier strip 1 just after a successful first casting to the middle circuit board 9, the first underside wrapping half has been sharpened and the carrier strip 1 is located immediately before the execution of another in a take place in the direction of the arrow 50 transport step.
  • the left-hand printed circuit board 9 of FIG. 5 has already been overmoulded with the lower-side wrapping half 39.
  • right circuit board 9 is shown not yet encapsulated. Further, it can be seen from Fig. 5, that at the same time two upwardly projecting coupling pins 40 and 41 are molded by the provided in the upper mold half 35 cylinder bores 37 and 38 during the injection molding process. Furthermore, it can be seen from Fig. 5 that the mounting tabs 14, 15, 16 and 17, the lower sheath half 38 projecting outwardly and continue to be in firm connection with the carrier strip 1.
  • the upper mold half 35 is removed and replaced by a second upper mold half 45, which is shown schematically in FIG.
  • This second upper mold half 45 has a second to the underlying already provided with the first envelope half 39 printed circuit board 9 open cavity 46, the dimensions of which corresponds approximately to the cavity 21 of the lower mold half 20 of FIG.
  • the upper wrapping half 47 can now be injection-molded onto the lower wrapping half 39 and on the printed circuit board 9. It is, as can be seen in particular from FIG. 6 for the front circuit board 9 shown in perspective section, that this is completely enclosed by the two enclosure halves 39 and 47.
  • Lung pin 41 creates an additional connection between the two Umhullungshalften 39 and 47th
  • Fig. 7 is a Doppelg cordform shown schematically, in which the lower Umhullungshalfte 39 and the upper Umhullungshalfte 47 can be generated in immediately consecutive work cycles after each intermediate transport step.
  • This double casting mold in the direction of transport of the arrow 50 immediately following the first lower mold half 20, has an additional lower mold part 20 'which has a cavity 39' which can accommodate the lower half of the envelope 39 molded in the mold half 20.
  • On this additional molding is an upper G cordformhalfte 45 with its cavity 46 closing placed. In this way, while in the G discernformhalfte 20 with attached closure mold part 35, the lower Umhullungshalfte arises, at the same time in the G fauxformhalfte 45 next to the upper Umhullungshalfte 47 are generated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de production de pièces moulées par injection comprenant une carte imprimée (9) souple intégrée, ce procédé comprenant les étapes suivantes : a) les cartes imprimées (9) souples devant être pourvues d'une enveloppe (39/47) en plastique sont fixées dans un évidement (2) d'une bande de support (1) au moyen d'éléments de support (14, 15, 16, 17) faisant saillie par rapport au bord, un espace étant ménagé de chaque côté de la carte imprimée (9); b) une des cartes imprimées (9) fixées dans la bande de support (1) est placée dans la cavité (21) du premier demi-moule (20) de moulage par injection, un espace étant ménagé de chaque côté de la carte imprimée (9), et elle est maintenue par les éléments de support (14 à 17) dans une position prédéterminée; c) la cavité (21) du premier demi-moule est obturée, avec la carte imprimée (9) à l'intérieur, au moyen d'une pièce d'obturation ne présentant pas de cavité, et ladite cavité (21) est remplie d'une masse de moulage par injection au cours d'un premier cycle de moulage; d) la pièce d'obturation (35) est ensuite retirée et remplacée par un second demi-moule (45) comportant une cavité (46) correspondant au reste de l'enveloppe, cette cavité (46) étant remplie d'une masse de moulage par injection au cours d'un second cycle de moulage.
EP07725393A 2006-06-21 2007-05-21 Procédé de production d'une pièce moulée par injection comprenant une carte imprimée souple intégrée Withdrawn EP2030228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006028816A DE102006028816B4 (de) 2006-06-21 2006-06-21 Verfahren zum getakteten, kontinuierlichen Herstellen von beidseitig umspritzten flexiblen Leiterplatten
PCT/EP2007/004486 WO2007147470A1 (fr) 2006-06-21 2007-05-21 Procédé de production d'une pièce moulée par injection comprenant une carte imprimée souple intégrée

Publications (1)

Publication Number Publication Date
EP2030228A1 true EP2030228A1 (fr) 2009-03-04

Family

ID=38442626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07725393A Withdrawn EP2030228A1 (fr) 2006-06-21 2007-05-21 Procédé de production d'une pièce moulée par injection comprenant une carte imprimée souple intégrée

Country Status (4)

Country Link
US (1) US20080006440A1 (fr)
EP (1) EP2030228A1 (fr)
DE (1) DE102006028816B4 (fr)
WO (1) WO2007147470A1 (fr)

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CN103358459B (zh) * 2012-03-31 2015-07-22 比亚迪股份有限公司 一种音腔密封支架的定位结构以及制作音腔密封支架的模具
TW201410101A (zh) * 2012-08-24 2014-03-01 Genitec Technology Co Ltd 全自動印刷機彈性製造系統
ES2900225T3 (es) 2013-09-27 2022-03-16 Tactotek Oy Método para fabricar una estructura electromecánica y un sistema para llevar a cabo el método
DE102014208429A1 (de) * 2013-11-28 2015-05-28 Continental Teves Ag & Co. Ohg Sensorherstellung durch Halten des Zwischenspritzlings
US9420503B2 (en) * 2014-01-21 2016-08-16 Cisco Technology, Inc. System and method for seamless mobility in a network environment
DE102017212784A1 (de) * 2017-07-25 2019-01-31 Wiegand Gmbh Zierteil für ein Fahrzeug und Verfahren zur Herstellung eines Zierteils

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Also Published As

Publication number Publication date
WO2007147470A1 (fr) 2007-12-27
US20080006440A1 (en) 2008-01-10
DE102006028816B4 (de) 2008-05-15
DE102006028816A1 (de) 2008-01-03

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