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WO2014075663A1 - Procédé et dispositif pour la fabrication de tôles organiques mises en forme - Google Patents

Procédé et dispositif pour la fabrication de tôles organiques mises en forme Download PDF

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Publication number
WO2014075663A1
WO2014075663A1 PCT/DE2013/100388 DE2013100388W WO2014075663A1 WO 2014075663 A1 WO2014075663 A1 WO 2014075663A1 DE 2013100388 W DE2013100388 W DE 2013100388W WO 2014075663 A1 WO2014075663 A1 WO 2014075663A1
Authority
WO
WIPO (PCT)
Prior art keywords
raw material
receptacles
blank
heated
contact strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2013/100388
Other languages
German (de)
English (en)
Inventor
Tristan Koslowski
Simon Geier
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.)
Universitaet Stuttgart
Original Assignee
Universitaet Stuttgart
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 Universitaet Stuttgart filed Critical Universitaet Stuttgart
Publication of WO2014075663A1 publication Critical patent/WO2014075663A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0272—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using lost heating elements, i.e. heating means incorporated and remaining in the formed article
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance 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
    • 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
    • B29C2045/14237—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 the inserts being deformed or preformed outside the mould or 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
    • B29C45/14—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
    • B29C45/14467—Joining articles or parts of a single article

Definitions

  • the invention relates to a method and an apparatus for producing three-dimensionally shaped organic sheets of planar, fiber-reinforced, thermoplastic and electrically conductive raw material, wherein the raw material is received by means of a handling device with a plurality of arranged in a plane recordings and the raw material by means of an electrical contacting device with a plurality Raw material electrically connecting contact strips of a power supply device is heated.
  • organo sheets are used due to their low weight instead of sheet metal parts.
  • Such organo sheets are formed from three-dimensionally shaped plastic parts, which are made of flat, planar raw materials by means of forming processes.
  • DE 10 2009 016 215 A1 describes a process for the production of organic sheets, in which a mold is heated to a temperature sufficient for plastic deformation of the semifinished product. Due to the high heat capacity of the mold a heating of the mold is energy consuming. Furthermore, a separate tool mold must be produced and kept available for each shape of the organic sheet.
  • German patent application No. 10 201 1 054 287.6, unpublished, describes a process for the production of organic sheets of electrically conductive raw material in which the raw material is already preheated during transport to a mold.
  • a cycle rate of the production of organo sheets can be shortened, but can not be dispensed with a mold adapted to the desired shape.
  • the method further provides for providing the organo-sheet formed in the tool mold with a second component by means of an injection-molding process in the same tool mold.
  • the object of the invention is to simplify the production of organo sheets and to shorten the cycle times of the production of these.
  • the proposed process for the production of three-dimensionally shaped organic sheets of flat, fiber-reinforced, thermoplastic and electrically conductive raw material contains at least the following process steps:
  • the raw material is received by means of a handling device with a plurality of in-plane receptacles, for example, from a storage device in which the raw material is stacked or brought in the form of individual prefabricated plates,
  • the raw material is heated by means of an electrical contacting device with a plurality of contact strips of a power supply device that electrically connect the raw material,
  • the raw material is partially heated within at least one area of the raw material bounded by two receptacles,
  • the plastic plates are preferably flat, but the inventive idea also includes pre-curved plastic plates.
  • the plastic plates consist of a plastic matrix of a thermoplastic and a component for reinforcement preferably in the form of fibers.
  • the plastic used is electrically conductive, so that when applying a voltage resistance heating of the plastic is achieved, which leads to sufficient softening of the plastic with sufficient supply of electrical energy, so that the plastic plate can be bent.
  • the electrical conduction can be achieved by means of the reinforcing component and / or the plastic matrix. Preference is given to using electrically conductive fibers such as graphite fibers or graphite balls.
  • the total amount of the reinforcing component may be composed of conductive material and non-conductive material, for example glass fibers. Partial application of electrical energy will cause local softening of the plastic sheets is achieved in one or more surface areas and a simple geometric shape, for example, in a softened area an angled plastic part is obtained. If a plurality of bends on surface areas of the plastic part with, if necessary, non-parallel arrangements of the receptacles which entangle a plastic plate with different degrees of strength, a large selection of geometric shapes in the sense of a 2.5D shape (2.5-dimensional) without tool mold and by means of only a single handling device are provided. For this purpose, the recordings can be controlled essentially freely programmable.
  • organo sheet is, on the one hand, to be understood as a three- or 2.5-dimensional product produced exclusively from a flat raw material.
  • a blank produced by the proposed method can be connected by means of another component, for example by means of an injection molding process, wherein such a product may also constitute an organic sheet.
  • a formed after an at least partial cooling blank in an injection mold and a second component made of plastic without further plastic change of the blank are molded onto the blank.
  • the blank may be one or more molded parts of the second component in terms of its design.
  • an organic sheet may contain, for example, a part which is injection-molded with respect to a blank from the second component and on which one or more blanks are arranged. In this case, the previously formed blanks are placed in a corresponding injection mold.
  • the forming of the raw material and insertion of the or the blanks can be done by means of a single handling device in a train.
  • a shortening of the cycle time in a process for the production of organic sheets with a molded in an injection mold second component can be achieved by the deformed and inserted into the injection mold and there not converted reshaped heated during a transport of a storage device in the injection mold and reshaped ,
  • the heating and forming preferably takes place within a cycle time of an injection process of the second component to the blank.
  • more complex shapes can be achieved, for example, after the heating and forming of the blank after insertion into a mold, for example, a separately formed mold or the injection mold, for example, after a partial or complete cooling and optionally reheating, for example, by the preheated Formerneut additionally is transformed.
  • heated blank next to a compound with molded second components alternatively or additionally be connected to at least one solid body, for example made of metal or a hard or non-destructive fusible plastic by this at least one body is introduced into the heated area such as surface area of the blank or completely penetrates , After cooling of the blank, such a body is firmly connected to the blank or at least connected captive.
  • at least one solid body for example made of metal or a hard or non-destructive fusible plastic
  • the proposed apparatus for the production of three-dimensional sheets of organo sheet contains at least one handling device with receptacles for receiving the raw material and a power supply device with contact strips for applying electrical energy to the raw material.
  • the power supply device can be integrated in the handling device, for example a gripper, industrial robot and the like.
  • the handling device and its receptacles and contact strips can be designed to be programmable to form corresponding spatial shapes. For this purpose, for example, the images mechanically to shift the softened surface areas against each other and the power supply device by means of a corresponding control of electrical variables such as current, voltage. Power and the like to form corresponding temperature profiles on the raw material controlled accordingly.
  • At least two contact strips act on a surface region of the raw material with electrical energy, and at least two receptacles are displaceable relative to one another on the handling device and arranged adjacent to the surface region.
  • the flat raw material is recorded, for example, by means of recordings like a clip on both sides. The images can open like scissors and record the flat raw material between them.
  • the contact strips for one or both sides application of electrical energy contact strips can be arranged on all or part of the recordings.
  • the contact strips may be arranged independently of the receptacles.
  • the term contact strips can point-like, linear and / or surface contacts are provided to the raw material.
  • FIG. 1 shows a device for forming flat plastic plates into shaped ones
  • Figure 2 shows the device of Figure 1 with a flat plastic plate before a forming process in a schematic representation
  • FIG. 3 shows the device 1 with the formed plastic plate
  • Figure 4 shows a section through an injection mold with inserted plastic plate in a schematic representation
  • Figure 5 is a three-dimensional, schematic representation of an organo-sheet produced from two components.
  • Figure 1 shows an overview and schematically the device 1 for receiving, heating and non-forming a flat plastic plate 2 of raw material containing thermoplastic material with an electrically conductive, a resistance heating of the plastic plate 2 enabling proportion, such as graphite fibers.
  • the device 1 contains the handling device 3 with the receptacles 4, which grip the plastic plate 2 at predetermined positions and hold.
  • electrical contact strips 5 are mounted, which produce an electrical contact between a not shown, for example, attached to the handling device or via this electrical energy in the plastic plate 2 feeding and optionally programmable power supply device and the plastic plate 2.
  • FIG. 2 shows a schematic representation of an enlarged detail of FIG. 1 with the plastic plate 2, which is shown in a checkered pattern for a better allocation of its surface geometry.
  • the receivers 4a, 4b, 4c, 4d, 4e, 4f grip the plastic plate 2 in the manner of a clip and form contact strips 5a, 5b, 5c, 5d arranged on the receptacles 4a, 4b, 4c, 4d, 4e, 4f by means of the current supply leads 6 and 5e, 5f, a transport and Stromeaufschlagungs founded for forming a partial resistance heating of the plastic plate 2.
  • the receptacles 4a, 4b, 4c, 4d, 4e, 4f spaced apart and can twisted against each other, shifted, pivoted or similarly shifted against each other.
  • the surface region 7 between the contact strips 5a, 5b, the surface region 7a between the contact strips 5c, 5d and the surface region 7b between the contact strips 5e, 5f is subjected to electrical energy.
  • the surface areas 7, 7a, 7b specification of the polarities +, - the remaining surfaces of the plastic plate 2 are not subjected to an electrical potential and therefore not heated.
  • FIG. 3 shows the arrangement of FIG. 2 after a forming process with the reshaped organic sheet 8, which can be finished in this phase or further processed as a blank 9.
  • the receptacle 4a relative to the receptacle 4b is rotated in the direction of the arrow 10, wherein the parallel arrangement of the receptacles 4a, 4b is maintained , In this case, the non-softened surface region 7c folds down relative to the original plane of the plastic plate 2.
  • the receptacles 4d, 4e are rotated relative to the receptacles 4c, 4f by lowering one end thereof in the direction of the arrow 11 and raising the other end in the direction of the arrow 12, so that the parallelism with the receptacles 4c, 4f is abandoned.
  • the surface regions 7a, 7b are folded in relation to the original plane of the plastic plate 2.
  • the receptacles 4b, 4c, 4f serve to support the plastic plate 2 and remain unchanged during the forming process. It is understood that the arrangement and number as well as further geometric operations of the images are adapted to the spatial form of an organic sheet to be produced and are accordingly covered by the inventive idea.
  • FIG. 4 schematically shows a section through a blank 9a made from a flat plastic plate according to FIGS. 2 and 3, which is inserted into the injection mold 13 in an already formed state.
  • a second component made of plastic is injected by means of an injection molding and connected to the blank 9a.
  • FIG. 5 shows a 3D view of one of the blank 9a and the second component 15 by means of an organo sheet 8a produced in the injection mold 13.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Robotics (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour la fabrication de tôles organiques (8) mises en forme en trois dimensions obtenues à partir d'une matière première plane, renforcée de fibres, thermoplastique et conductrice de l'électricité, la matière première étant saisie au moyen d'un dispositif manipulateur comportant plusieurs pinces (4a, 4b, 4c, 4d, 4e, 4f) disposées dans un plan et la matière première étant chauffée au moyen d'un dispositif de connexion électrique comportant plusieurs barres de contact d'un dispositif d'alimentation en courant qui connectent électriquement la matière première. Pour pouvoir exécuter une opération de déformation de la matière première de façon plus simple et sans outils d'emboutissage, la matière première est partiellement chauffée au moyen des barres de contact dans au moins une région de surface (7, 7a, 7b) de la matière première limitée par deux pinces (4a, 4b, 4c, 4d, 4e, 4f) et, en manipulant les pinces (4a, 4d, 4e) pour les sortir du plan de la matière première, on exécute une déformation plastique de la matière première chauffée qui la transforme en une tôle organique (8) ou une pièce brute (9) d'une tôle organique.
PCT/DE2013/100388 2012-11-19 2013-11-18 Procédé et dispositif pour la fabrication de tôles organiques mises en forme Ceased WO2014075663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210111087 DE102012111087B3 (de) 2012-11-19 2012-11-19 Verfahren und Vorrichtung zur Herstellung von geformten Organoblechen
DE102012111087.5 2012-11-19

Publications (1)

Publication Number Publication Date
WO2014075663A1 true WO2014075663A1 (fr) 2014-05-22

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Application Number Title Priority Date Filing Date
PCT/DE2013/100388 Ceased WO2014075663A1 (fr) 2012-11-19 2013-11-18 Procédé et dispositif pour la fabrication de tôles organiques mises en forme

Country Status (2)

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DE (1) DE102012111087B3 (fr)
WO (1) WO2014075663A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013107103B4 (de) * 2013-07-05 2021-05-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Faserhalbzeug-Ablegekopf und Faser-Legevorrichtung
EP3020752A1 (fr) 2014-11-17 2016-05-18 LANXESS Deutschland GmbH Semi-produit à matrice de fibres ignifuge
DE202014009839U1 (de) 2014-12-11 2016-03-15 Lanxess Deutschland Gmbh Flammgeschützte Faser-Matrix-Halbzeuge
DE102015108338B4 (de) * 2015-05-27 2017-11-16 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren und Vorrichtung zur Herstellung eines Faserverbundbauteils

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030657A1 (fr) * 2000-10-13 2002-04-18 Barsmark A/S Procede, appareil et matrice de fabrication de plaques composites
DE10351178A1 (de) 2003-11-03 2005-06-02 Ralf Schneeberger Verfahren zur Herstellung von Kohlefaserverbundwerkstoffteilen mit thermoplastischen Matrixsystemen
DE102009016215A1 (de) 2009-04-03 2010-10-14 Volkswagen Ag Verfahren zur Herstellung eines Bauteils sowie zur Herstellung des Bauteils verwendbare Spanneinrichtung, Klapprahmen sowie Presswerkzeug
DE102011054287A1 (de) 2011-10-07 2013-04-11 Universität Stuttgart Verfahren und Vorrichtung zur Herstellung von Kunststoffformteilen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3942891A1 (de) * 1989-12-23 1991-06-27 Bayer Ag Verfahren zum thermoplastischen verformen von kunststoffen
DE102008048384A1 (de) * 2008-09-22 2010-04-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Verformen von Gegenständen sowie verformbare Gegenstände

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030657A1 (fr) * 2000-10-13 2002-04-18 Barsmark A/S Procede, appareil et matrice de fabrication de plaques composites
DE10351178A1 (de) 2003-11-03 2005-06-02 Ralf Schneeberger Verfahren zur Herstellung von Kohlefaserverbundwerkstoffteilen mit thermoplastischen Matrixsystemen
DE102009016215A1 (de) 2009-04-03 2010-10-14 Volkswagen Ag Verfahren zur Herstellung eines Bauteils sowie zur Herstellung des Bauteils verwendbare Spanneinrichtung, Klapprahmen sowie Presswerkzeug
DE102011054287A1 (de) 2011-10-07 2013-04-11 Universität Stuttgart Verfahren und Vorrichtung zur Herstellung von Kunststoffformteilen

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