WO2012016801A1 - Dispositif et procédé de production de pièces moulées constituées de matière plastique - Google Patents

Dispositif et procédé de production de pièces moulées constituées de matière plastique Download PDF

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Publication number
WO2012016801A1
WO2012016801A1 PCT/EP2011/061968 EP2011061968W WO2012016801A1 WO 2012016801 A1 WO2012016801 A1 WO 2012016801A1 EP 2011061968 W EP2011061968 W EP 2011061968W WO 2012016801 A1 WO2012016801 A1 WO 2012016801A1
Authority
WO
WIPO (PCT)
Prior art keywords
channels
connecting channel
molding compound
cavity
receiving chamber
Prior art date
Application number
PCT/EP2011/061968
Other languages
German (de)
English (en)
Inventor
Rene Brunotte
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2012016801A1 publication Critical patent/WO2012016801A1/fr

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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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • 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
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/30—Flow control means disposed within the sprue channel, e.g. "torpedo" construction
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/581—Devices for influencing the material flow, e.g. "torpedo constructions" or mixing devices
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/267—Intermediate treatments, e.g. relaxation, annealing or decompression step for the melt
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/269—Extrusion in non-steady condition, e.g. start-up or shut-down
    • B29C48/2694—Intermittent extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/87—Cooling
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3444—Feeding the material to the mould or the compression means using pressurising feeding means located in the mould, e.g. plungers or pistons
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel

Definitions

  • the invention relates to a device and a method for producing molded plastic parts according to the preambles of the independent claims.
  • a device used for the application of the method has a receiving chamber or antechamber in which an initially solid molding compound, from which the molded part is subsequently formed, is introduced.
  • the molding compound is then injected into a molding tool via the generally heated receiving chamber or prechamber after at least partial melting thereof via at least one connecting channel, preferably a plurality of connecting channels, this being done, for example, by means of a piston which separates the at least partially molten molding compound from the receiving body. or pre-chamber in the at least one connecting channel injects or overshoots.
  • the forming of the molding itself takes place in a receptacle (cavity) or a mold cavity of the mold under the action of heat and pressure.
  • relatively large molded parts which accordingly require relatively large or even several molding compounds, are problematic in order, in particular in the presence of a plurality of receptacles in the molding tool, in one operation. lends to be able to produce many moldings.
  • the problem here is in particular that sufficient material of the molding material is melted before it is introduced into the receptacle of the mold. Therefore, relatively large heating powers or a relatively long residence time of the molding compound in the receiving chamber are required in order to achieve the desired melting of the molding compound.
  • the invention has the object, a device or a method for producing made of plastic moldings according to the preambles of the two independent claims in such a way that an improved melting of the
  • Mold compound is enabled.
  • Such an improved melting of the molding compound makes it possible to minimize the length of the at least one connecting channel between the receiving chamber and the molding tool or to reduce the heating power of the receiving chamber. Both lead to reduced investment or operating costs.
  • an improved melting performance of the molding compound under otherwise identical conditions leads to a higher performance of the device, since the time for melting the molding compound is reduced and the cycle time during the production of the molded parts is thus shortened.
  • the invention is based on the idea of subdividing the connection channel or the flow path of the at least partially melted plastic element into at least two subchannels by means of a separating element in the at least one connecting channel between the receiving chamber for the molding compound and the molding tool or a cavity by means of several connecting channels. to connect with a receiving chamber.
  • a connection channel with at least two sub-channels a better heat transfer is created by a compared to a single connection channel enlarged total contact surface to be melted molding compound in the wall area, which reduces the required melting time for the molding material.
  • a similar effect can be achieved if a cavity is connected to a receiving chamber with several connecting channels.
  • the size of the lateral surfaces of the sub-channels per unit length is greater than the shell surface of the at least one connecting channel before separation into the at least two sub-channels.
  • the enlarged contact surface of the at least two sub-channels compared to at least one connecting channel is made possible, which has a better heat transfer result.
  • the cross-sectional area of the at least one connecting channel and the sum of the cross-sectional areas of the at least two sub-channels are the same size. As a result, a uniform flow velocity of the material to be melted is made possible or a pressure which is constant over the flow path of the material is generated.
  • the cross-sectional areas of the at least two sub-channels are the same size.
  • a uniform heating of the two partial strands of the plastic material or the molding compound is made possible. This leads to the subsequent introduction of the molten molding material in the mold to a homogeneously melted mass with uniform temperature, which allows a uniform curing and thus a high quality.
  • the cross-sectional shape of the at least one connecting channel and the at least two sub-channels is respectively round or oval, that the at least one connecting channel and the at least two sub-channels are arranged in a common plane and, in that the molding tool has at least two mold parts which cooperate with one another and whose pitch runs in the common plane.
  • FIG. 5 shows the region of a connecting channel and two sub-channels in a simplified section
  • FIG. 6 is a comparison with FIG. 5 modified arrangement with several sub-channels, also in a simplified section and
  • FIGS. 1 to 4 show an apparatus 10 for producing molded parts 1 made of plastic.
  • the molded part 1 is in particular a molded part 1, which is part of an electrical circuit substrate or an electrical switching device, in particular in applications in motor vehicle technology.
  • the device 10 by means of the device 10 during a single production cycle at least one molded part 1, but preferably a plurality or more moldings 1 produced simultaneously.
  • the device 10 comprises a machine frame 11, on whose upper side a forming tool 12 is arranged.
  • the molding tool 12 has two mold halves 13, 14, which cooperate with each other, wherein the shape of the molding 1 or the moldings 1 is formed by the mold 12 and the mold halves 13, 14 such that in the mold halves 13, 14 for each Molded part 1 is formed in each case one not shown in Figures 1 to 4 cavity 15. Since, as already explained, several mold parts 1 are produced at the same time per production cycle, this includes
  • Forming tool 12 thus also a plurality of cavities 15, even if in the description or the figures, if necessary, only one cavity 15 is described or shown.
  • the two mold halves 13, 14 according to FIGS. 1 to 3 are superposed or in one another Cover arranged such that the cavities 15 are closed to the outside.
  • the two mold halves 13, 14 are separated from each other or spaced as shown in FIG. 4.
  • the machine frame 11 has a plurality of columns 16 and guides, which carry a tool 17 (also called “plunger").
  • the upper mold half 14 is disposed on the underside of the tool 17, such that upon lifting of the tool 17 at the same time the upper mold half 14 is also lifted to allow removal of the molded parts 1 (Fig. 4).
  • the tool 17 comprises a receiving chamber 18 shown only schematically in FIGS. 1 to 4 for receiving at least one solid molding compound 2.
  • the molding compound 2 has, in contrast to the use of granules, a tablet or pellet-like shape with, for example, a large measure
  • the existing in particular from a thermoset molding compound 2 forms the material for the moldings 1, wherein the molding material 2 is at least partially melted by means of the tool 17 and then introduced into the cavities 15 of the mold 12.
  • the molding compound 2 fills the cavities 15 and after their cooling, in which the molding compound 2 solidifies again, the mold parts 1 can be removed from the mold 12 and optionally post-annealed.
  • the transferring or pushing out of the molding compound 2 from the tool 17 into the molding tool 12 takes place by means of a device 19 shown only schematically in FIGS. 1 to 4, which by way of example has a piston 20 which can be introduced into the receiving chamber 18 and thereby at least partially melted molding compound 2 displaced from the receiving chamber 18.
  • the tool 17 or the receiving chamber 18 is formed heatable, such that the wall of the receiving chamber 18, for example, has a temperature of about 180 ° C.
  • the transferring or pushing out of the at least partially melted molding compound 2 from the receiving chamber 18, which in this case initially has, for example, a temperature of 70 ° C., into the cavities 15 of the molding tool 12 does not take place directly or directly, but via at least one, recognizable in FIG. 5 connecting channel 22 instead.
  • the connecting channel 22 thus has a direct connection on the one hand with the receiving chamber 18 and on the other hand with the or the cavities 15 of the mold 12.
  • the connecting channel 22 is arranged either in the mold 12 or in the tool 17.
  • the connecting channel 22 is divided into at least two sub-channels 23, 24 over at least a portion of its length.
  • the connecting channel 22 on the side 25 is connected to the receiving chamber 18 of the tool 17, and on the side 26 to the cavity or cavities 15 of the forming tool 12.
  • the formation or arrangement of the two sub-channels 23, 24 is such that the connecting channel 22 on the side 25 divides into the two sub-channels 23 and 24, and the two sub-channels 23 and 24 on the side 26 again to the (single) Combine connecting channel 22.
  • a separating element 28 is provided, which has a separating edge 29 in the embodiment shown in FIG. 5 on the side facing the receiving chamber 18.
  • the cross section of the separating element 28 increases, starting from the separating edge 29, in FIG.
  • the separating element 28 is arranged either in one of the two mold halves 13 or 14, in particular integrally connected to one of the two mold halves 13 or 14, or it has a pitch in the parting plane of the two mold halves 13, 14, ie, that in each case a portion of the Separating element 28 in one of the two mold halves 13, 14 is arranged.
  • the two sub-channels 23 and 34 and the connecting channel 22 are also in the parting plane of the mold 12th
  • the cross section of both the connecting channel 22 and the two sub-channels 23 and 24 are each round, possibly also formed oval.
  • the total cross-sectional area of the two sub-channels 23 and 24 is the same size as the cross-sectional area of the connecting channel 22. It is essential additional heat is introduced or transferred into the molding compound 2 via the region of the connecting channel 22 and the two subchannels 23 and 24.
  • the area of the connecting channel 22 or of the two sub-channels 23 and 24 may additionally be heated or provided with a separate heating device.
  • the cross-sectional areas of the two sub-channels 23 and 24 are at least approximately the same size, that is, that they are each half of the connecting channel 22.
  • the circumferential or circumferential surfaces of the two sub-channels 23 and 24 are larger than the circumferential or circumferential surface in the region of the connecting channel 22, in each case based on the same length unit. Due to this enlarged peripheral surface or lateral surface of the two sub-channels 23 and 24, in conjunction with the cross-sectional area respectively reduced in relation to the connecting channel 22, improved heat introduction into the molding compound 2 is made possible.
  • a molding compound 2 is shown purely schematically, which passes through the connecting channel 22 and the two sub-channels 23 and 24.
  • the molding compound 2 is shown in FIG. 5 during various positions of its transport.
  • three regions 32 to 34 are designated in the molding compound 2, which are characterized by a different temperature.
  • the region 32 has the highest temperature and the region 34 the lowest temperature, while the region 33 has a temperature which lies between the temperatures of the regions 32 and 34.
  • the molding compound 2 was separated by means of the separating edge 29 of the separating element 28 in two molding materials 2a, 2b and thereby passes the separator 28, it can be seen that the first coldest portion 34 of the two molding materials 2a, 2b in thermally conductive contact with the wall of the separating element 28th device and is heated by this.
  • the two molding compounds 2a and 2b At the end of the separating element 28, the two molding compounds 2a and 2b in turn have an inner core or a region 34 with a lower temperature.
  • the two molding materials 2a, 2b are brought together again, forming two relatively small areas 34.
  • FIG. 6 shows the case in which the connecting channel 22 is divided into five subchannels 35 to 39.
  • the four separating elements 40 to 43 recognizable in FIG. 6 are used for this purpose.
  • the individual sub-channels 36 to 39 are subsequently brought together again to form a single connecting channel 22.
  • FIG. 7 shows a modified device in which the receiving chamber 18a with a plurality of connecting channels 22a to 22c is connected, for example, to a single cavity 15a. It finds hereby, in contrast to the embodiments shown so far, no division of a connecting channel 22 in sub-channels 34, 24 and 35 to 39 instead.
  • connection channels 22a to 22c can have the same cross-sectional area, but it can also be provided that at least two of the
  • Connecting channels 22a to 22c have a different cross-sectional area.
  • Embodiments is shown.
  • the central connecting channel 22b receives the relatively cold or not yet melted core of the molding compound 2 when the molding compound 2 is not completely melted , while in the two edge-side connecting channels 22a and 22c completely molten molding compound 2 from the Edge regions of the molding compound 2 is transported.
  • connection channels 22a to 22c either for reasons of the different degree of fusion of the molding compound 2 in the connection channels 22a to 22c, or due to different lengths or cross-sectional areas of the connection channels 22a to 22c, for example, different pressures in the connection channels 22a to 22c may occur. This must be taken into account when determining the number or dimensioning of the connection channels 22a to 22c or this can be used positively to obtain molded parts 1 with homogeneous quality.
  • the device 10 described so far can be modified or modified in many ways, without departing from the spirit of the invention.
  • This consists in a division of a connecting channel 22 between a receiving chamber 18 and one or more cavities 15 in at least two sub-channels 23, 24 and 36 to 39th
  • Such a modification of the device 10 may for example consist in that the sub-channels 23, 24 and 36 to 39 either only partially or not at all merged or reunited, ie be directly connected to the or the cavities 15 of the mold 12.

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

Abstract

L'invention concerne un dispositif (10) de production de pièces moulées (1) constituées de matière plastique, ledit dispositif comportant un outil (17) qui présente un compartiment logement (18) servant à loger et à chauffer une matière à mouler solide (2), au moins un canal de liaison (22) qui relie le compartiment logement (18) à au moins une cavité (15) d'un outil de formage (12), et un dispositif, en particulier de type à piston, servant à extraire la matière à mouler au moins partiellement fondue hors du compartiment logement (18) dans le ou les canaux de liaison (22) et dans la ou les cavités (15) de l'outil de formage (12). Selon l'invention, un élément de séparation est agencé dans le ou les canaux de liaison (22) et divise le ou les canaux de liaison (22) en au moins deux canaux partiels (23, 24) dans le sens de l'écoulement (30) de ladite matière à mouler (2) au moins partiellement fondue.
PCT/EP2011/061968 2010-08-04 2011-07-13 Dispositif et procédé de production de pièces moulées constituées de matière plastique WO2012016801A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010038915.3 2010-08-04
DE102010038915A DE102010038915A1 (de) 2010-08-04 2010-08-04 Vorrichtung und Verfahren zum Herstellen von aus Kunststoff bestehenden Formteilen

Publications (1)

Publication Number Publication Date
WO2012016801A1 true WO2012016801A1 (fr) 2012-02-09

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WO (1) WO2012016801A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836306A (en) * 1972-08-29 1974-09-17 Uniroyal Ag Transfer molding apparatus
DE3032814A1 (de) * 1980-08-30 1982-04-22 Kunststoff-Maschinen-Handelsgesellschaft mbH, 4990 Lübbecke Vorrichtung zum spritzpressen haertbarer formmassen
EP1236564A1 (fr) * 2001-02-15 2002-09-04 BPW Bergische Achsen Kommanditgesellschaft Procédé pour réaliser des pièces en matière plastique renforcés par des fibres
US20060261521A1 (en) * 2005-05-17 2006-11-23 Beaumont John P Adjustable melt rotation positioning device and method
US20070296100A1 (en) * 2006-05-08 2007-12-27 Beaumont Technologies, Inc. Controlling warpage through melt rotation technology

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008488C2 (nl) * 1998-03-05 1999-09-07 Fico Bv Maldeel, mal en werkwijze voor het omhullen van op een drager bevestigde elektronische componenten.
US6338813B1 (en) * 1999-10-15 2002-01-15 Advanced Semiconductor Engineering, Inc. Molding method for BGA semiconductor chip package

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836306A (en) * 1972-08-29 1974-09-17 Uniroyal Ag Transfer molding apparatus
DE3032814A1 (de) * 1980-08-30 1982-04-22 Kunststoff-Maschinen-Handelsgesellschaft mbH, 4990 Lübbecke Vorrichtung zum spritzpressen haertbarer formmassen
EP1236564A1 (fr) * 2001-02-15 2002-09-04 BPW Bergische Achsen Kommanditgesellschaft Procédé pour réaliser des pièces en matière plastique renforcés par des fibres
US20060261521A1 (en) * 2005-05-17 2006-11-23 Beaumont John P Adjustable melt rotation positioning device and method
US20070296100A1 (en) * 2006-05-08 2007-12-27 Beaumont Technologies, Inc. Controlling warpage through melt rotation technology

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