EP2931500A1 - Procédé de fabrication d'une nappe multicouches en mats renforcés de fibres à matrice thermoplastique entourant les fibres au moins en partie, et installation de fabrication pour mettre en uvre le procédé - Google Patents

Procédé de fabrication d'une nappe multicouches en mats renforcés de fibres à matrice thermoplastique entourant les fibres au moins en partie, et installation de fabrication pour mettre en uvre le procédé

Info

Publication number
EP2931500A1
EP2931500A1 EP13811381.6A EP13811381A EP2931500A1 EP 2931500 A1 EP2931500 A1 EP 2931500A1 EP 13811381 A EP13811381 A EP 13811381A EP 2931500 A1 EP2931500 A1 EP 2931500A1
Authority
EP
European Patent Office
Prior art keywords
unit
single layer
mats
storage element
gripping
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Withdrawn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
EP13811381.6A
Other languages
German (de)
English (en)
Inventor
Kevin Wild
Dominik Harant
Holger Laukant
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2931500A1 publication Critical patent/EP2931500A1/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Withdrawn legal-status Critical Current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
    • 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
    • B29C70/386—Automated tape laying [ATL]
    • 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
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
    • 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

Definitions

  • the present invention relates to a process for the production of a multilayer outer layer of fiber-reinforced mats with a thermoplastic matrix at least partially surrounding the fibers.
  • a method for producing a multilayer counterweight is known, wherein the multilayer countershaft is produced along a conveyor belt by means of a cutting and laying head the mats at defined angles to each other along the conveying path of the conveyor belt, the multilayer countershaft.
  • a disadvantage of the method disclosed in the prior art is that for each individual layer along the conveyor belt a corresponding cutting and laying head must be provided, so that correspondingly with each layer to be laid the manufacturing plant must be sized larger and the production equipment investment increases.
  • the cutting and laying heads must place the mats on the moving conveyor belt, so that the tolerances to be observed when depositing the mats must not be very high.
  • a method for producing a multilayer counterweight of fiber-reinforced mats with a thermoplastic matrix at least partially surrounding the fibers comprising the following steps: (A) construction of a first single layer of at least two mats with a defined orientation and a defined distance from each other on a first storage element by means of a laying unit, (B) receiving the first single layer with a gripping unit while maintaining the orientation of the distance of the mats to each other,
  • the method according to the invention makes it possible, by means of the local separation of the process steps of building up the individual layers and the construction of the multilayer countershaft, to carry out these two steps in parallel and significantly reduce the production time of the multilayer countershaft.
  • the defined orientation and the defined distance of the mats of a particular single layer can be easily monitored and controlled (eg by a camera system with corresponding image analysis), so that the quality or the accuracy of the orientation and the distance of the mats to each other can be adjusted much more accurately by the separate structure of a single individual position than in a method of the prior art.
  • the construction of a first single layer may comprise only one mat, which is constructed by means of a laying unit on a first storage element.
  • steps B, and C can be made in particular at the same time or substantially simultaneously with the step D.
  • the steps E to G are preferably performed successively, ie step F to E and step G to F.
  • the step D can be carried out in particular during each step of steps E to G.
  • At least one storage element in relation to the gripping unit is rotatable to pre-position the individual layers can.
  • At least one storage element (3, 7) and / or the gripping unit (5) in relation to the gripping unit (5) and / or the storage element (5) rotatable to pre-position the individual layers (2, 8) can.
  • a rotatability of either at least one of the storage elements or the gripping unit or at least one storage element and the gripping unit allows the individual layers also vorzupositionieren angled to each other.
  • Rotatability of the first storage element in relation to the gripping unit makes it possible for a defined angle in relation to the gripping unit to be set after closing or during construction of the first or further single layer, so that this angular orientation need not be performed by the laying unit itself , Alternatively, this angular orientation can also be realized by a rotatability of the gripping unit.
  • the angular orientation by means of one or both rotatable storage elements in relation to the gripping unit so the accuracy and speed of the method according to the invention can be further improved.
  • At least one rotatable storage element in relation to the gripping unit also makes it possible to spend after the successful construction of the first or the further single layer in a receiving position, at the same time on the same storage element a correspondingly free space to build another To create a single layer.
  • the support elements for this purpose have a circular structure.
  • the laying unit and / or the transport unit is / are preferably movable along a linear guide unit.
  • Linear guide units allow a high degree of precision for the exact observance of the defined orientation and the defined distance when depositing the at least two mats by means of the laying unit or during transport through the transport unit.
  • the transport unit may be formed by an industrial robot.
  • so-called multi-axis robots in particular five-axis robots, which have corresponding gripping units or to which corresponding gripping units are assigned, are suitable for this purpose.
  • the laying unit and the transport unit are located on a common linear guide unit. The laying unit and the transport unit can be moved as a result along a common linear guide unit. A corresponding manufacturing plant for carrying out the method can thereby be made even more compact.
  • a negative pressure for the stationary holding of the individual layers.
  • a vacuum unit ie a unit which provides a vacuum
  • the fixing unit may include an ultrasonic welding unit, a laser welding unit, a plasma welding unit, an electron beam welding unit, a sewing unit, a
  • the gripping unit may in particular comprise a suction cup or a plurality of suction cups.
  • the gripping unit may further comprise one or more surface suction elements.
  • a substantially flat surface is provided with a plurality of suction openings, to which a positive or negative pressure can be applied.
  • An example of such a surface suction element is sold under the name UniGripper.
  • the fixing unit is connected to the gripping unit. This can make it possible to construct the production plant even more compactly, since the fixing unit can be moved together with the gripping unit and does not have to be transported separately.
  • the suction openings of a surface suction element can serve, for example, as a passage for an ultrasonic welding unit, a laser welding unit, a plasma welding unit, an electron beam welding unit, a stitching unit, a needling unit and / or a combination of the aforementioned units.
  • the gripping unit may preferably have at least one suction cup with a peripheral edge, which can be brought via at least one pressure line by applying a negative or an overpressure in a Ansaugschreib or a repulsion state, wherein the peripheral edge in the intake state includes a portion of the first or further single layer.
  • a fixing unit with a source of high-energy radiation for example the laser welding unit or the plasma welding unit or an electron beam welding unit
  • this fixing unit being arranged such that the radiation within the peripheral edge can be transferred to the partial area of the first or further single layer
  • the high-energy radiation is transferable via or through the pressure line.
  • the at least one suction cup can be rigid and unyielding, so that a pressure force can be transmitted to the first and / or further individual position via the suction cup.
  • the suction cup may alternatively be elastic and yielding, in particular as bellows suction bell.
  • a pressure sensor which is in signal communication with the fixing unit can be provided, the sensor signal of which can be used to release the high-energy radiation.
  • the surface of the suction gap facing the partial region can be formed from or coated with a material which substantially reflects the high-energy radiation.
  • the laying unit may comprise a cutting unit for providing the mats.
  • the cutting unit is movable along a support structure of the laying unit, which extends at least substantially perpendicular to the main movement direction of the laying unit.
  • the main direction of movement is defined in particular by the movement direction. tion of a linear guide unit.
  • This makes it possible to construct the mats at any points of a two-dimensional grid on the first storage element to a first or further single layer.
  • the mats are formed by blanks of a unidirectional continuous fiber reinforced band. Corresponding bands can be particularly easily fed to a cutting unit.
  • the mats can be taken ready assembled a magazine.
  • a multilayer backing which can be produced by the process according to the invention is particularly advantageously suitable as semifinished material for the production of fiber-reinforced molded parts for motor vehicles, in particular e.g. for the production of fiber-reinforced battery housings for traction batteries, for the production of spare wheel wells, trunk wells, wheel carriers, cross members or side members or in general in particular for the production of motor vehicle structural parts.
  • thermoplastic matrix of the fiber-reinforced mats may be polyamide (PA), in particular polyamide 6 and polyamide 6.6, polypropylene (PP), polyethylene (PE), POM
  • the fibers are preferably mineral fibers, in particular glass fibers, and / or
  • the fibers are endless fibers or formed as continuous fibers. Continuous fibers are fibers which substantially completely pass through the respective mat in one direction.
  • a production plant according to the invention for carrying out the method according to the invention, in particular according to one of claims 1 to 8, comprises at least:
  • a laying unit for constructing a first single layer of at least two mats with a defined orientation and a defined distance from each other on the first storage element and for building a further single layer of at least two mats with a defined orientation and a defined distance from each other on the first storage element,
  • a gripping unit for receiving the first single layer while maintaining the orientation and the distance of the mats to each other and for receiving the further single layer while maintaining the orientation and the distance of the mats to each other,
  • a transport unit for respectively displacing the gripping unit to the second storage element, wherein a depositing of the first single layer on the second storage element by separating the first single layer of the gripping unit takes place, and wherein the further single layer in a defined position on the first single layer and / or a already deposited further single layer is deposited by separating the further single layer of the gripping unit, so that the individual layers overlap at least partially,
  • 1 to 10 are each a plan view from above of a manufacturing plant according to the invention for carrying out the method according to the invention.
  • FIGS. 1 to 10 show the method according to the invention and the production system according to the invention for producing a multilayer countershaft 10 of fiber-reinforced mats 1 with a thermoplastic matrix at least partially surrounding the fibers.
  • Both storage element 3, 7 are rotatable in relation to the gripping unit 5 in order to preposition the individual layers 2, 8 can.
  • the laying unit 4 and the transport unit 6 are movable along a linear guide unit 20.
  • the laying unit 4 and the transport unit 6 along a common linear guide unit 20 are movable.
  • On the storage surfaces of the two storage elements 3, 7 by means of a vacuum unit a negative pressure for the stationary holding of the individual layers 2, 8 can be generated.
  • the laying unit 4 has a cutting unit 22 for providing the mats 1.
  • the cutting unit is orthogonal to the main movement direction of the linear guide unit 20 along a support structure of the laying unit 4 movable.
  • the mats 1 are formed by blanks from a unidirectional continuous fiber reinforced band. 1 shows the step (A) of the construction of a first single ply 2 of at least two mats 1 with a defined orientation and a defined distance from one another on a first depositing element 3 by means of a laying unit 4.
  • Fig. 2 shows that after the successful construction of the single layer 2, the support element 3, the first single layer 2 rotates in a receiving position and located on a transport unit 6 gripping unit 5, the first single layer 2 approaches.
  • the laying unit 4 begins in step (D) with the construction of a further single layer 8 of at least two mats 1 with a defined orientation and a defined distance from one another on the first storage element 3.
  • Fig. 3 shows the step (B) of receiving the first single layer 2 with the gripping unit 5 while maintaining the orientation and the distance of the mats 1 to each other.
  • the structure of the further individual layer 8 consists of at least two mats 1 with a defined orientation and a defined distance from one another on the first storage element 3 by means of the laying unit 4.
  • FIG. 4 shows the step (C) of displacing the gripping unit 5 - and thus the first single layer 2 - by means of the transport unit 6 and depositing the first single layer 2 on a second storage element 7 by separating the first single layer 2 from the gripping unit 5.
  • FIG. 5 shows how the transport unit 6 with the gripping unit 5 approaches the first support element 3 again, while the laying unit 4 terminates the structure of the further single layer 8.
  • Fig. 6 shows a part of step (E) of receiving the further single layer 8 with the gripping unit 5 while maintaining the orientation and the distance of the mats 1 to each other.
  • the storage element 3 has spent the further single layer 8 by a rotation of 180 ° in a receiving position.
  • the laying unit 4 in step (D) starts again with the structure of a further single layer 8 of at least two mats 1 with a defined orientation and a defined distance from each other on the first storage element 3.
  • the gripping unit 5 could have rotated the first single layer 2 by rotation before it was deposited in relation to the second storage element 7.
  • step (G) the individual layers 2, 8 are fixed in position with a fixing unit 9 to form a multi-layered countershaft 10, wherein the fixing unit 9 is connected to the gripping unit 5.
  • the structure of the further individual layer 8 of at least two mats 1 with a defined orientation and a defined distance from one another on the first depositing element 3 by means of the laying unit 4 continues to take place in parallel.
  • FIG. 8 shows the reception of the further single layer 8 with the gripping unit 5, while maintaining the orientation and the distance of the mats 1 from one another.
  • the first storage element 3 is rotatable in relation to the gripping unit 5 in order to pre-position the single layer 8 can.
  • the first storage element 3 has pre-positioned the further single layer 8 in an angular orientation to the gripping unit.
  • 9 shows the displacement of the gripping unit 5 - and thus the further single layer 8 - by means of the transport unit 6 to the second storage element 7 and the depositing of the further single layer 8 in a defined position on the first single layer 2 and the already deposited additional single layer. 8 by separating the further single layer 8 of the gripping unit 5, so that the individual layers 2, 8 overlap at least partially.
  • a fixation unit 9 fixes the individual layers 2, 8 in a multilayer countershaft 0.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Robotics (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une nappe multicouches en mats renforcés de fibres comprenant une matrice thermoplastique qui entourent les fibres au moins en partie. L'invention concerne en outre une installation de fabrication servant à mettre en œuvre ce procédé.
EP13811381.6A 2012-12-17 2013-12-10 Procédé de fabrication d'une nappe multicouches en mats renforcés de fibres à matrice thermoplastique entourant les fibres au moins en partie, et installation de fabrication pour mettre en uvre le procédé Withdrawn EP2931500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012112416.7A DE102012112416A1 (de) 2012-12-17 2012-12-17 Verfahren zur Herstellung eines mehrlagigen Vorgeleges aus faserverstärkten Matten mit einer die Fasern zumindest teilweise umgebenden thermoplastischen Matrix, sowie Fertigungsanlage zur Durchführung des Verfahrens
PCT/EP2013/003724 WO2014095002A1 (fr) 2012-12-17 2013-12-10 Procédé de fabrication d'une nappe multicouches en mats renforcés de fibres à matrice thermoplastique entourant les fibres au moins en partie, et installation de fabrication pour mettre en œuvre le procédé

Publications (1)

Publication Number Publication Date
EP2931500A1 true EP2931500A1 (fr) 2015-10-21

Family

ID=49876542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13811381.6A Withdrawn EP2931500A1 (fr) 2012-12-17 2013-12-10 Procédé de fabrication d'une nappe multicouches en mats renforcés de fibres à matrice thermoplastique entourant les fibres au moins en partie, et installation de fabrication pour mettre en uvre le procédé

Country Status (3)

Country Link
EP (1) EP2931500A1 (fr)
DE (1) DE102012112416A1 (fr)
WO (1) WO2014095002A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014216459A1 (de) * 2014-08-19 2016-02-25 Bayerische Motoren Werke Aktiengesellschaft Transportverfahren und -system für biegeschlaffe Materialien
DE102014218976A1 (de) * 2014-09-22 2016-03-24 Bayerische Motoren Werke Aktiengesellschaft Transportvorrichtung zum Transportieren von zumindest einem Halbzeug aus Fasermaterial und Verfahren zum Bereitstellen eines Halbzeugs aus Fasermaterial
DE102016104926A1 (de) 2016-03-16 2017-09-21 MAi GmbH & Co. KG Verfahren zur Herstellung eines mehrlagigen Vorgeleges aus faserverstärkten Matten mit einer die Fasern zumindest teilweise umgebenden thermoplastischen oder duroplastischen Matrix, sowie Fertigungsanlage zur Durchführung des Verfahrens
WO2018028791A1 (fr) * 2016-08-11 2018-02-15 LIEMT, Rainer Procédé de fabrication d'un produit semi-fini fibres/matrice
DE102019200321A1 (de) * 2019-01-14 2020-07-16 Volkswagen Aktiengesellschaft Verfahren zum Drapieren flächiger Halbzeuge

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GB9825999D0 (en) * 1998-11-28 1999-01-20 British Aerospace A machine for laying up fabric to produce a laminate
AU2001280861A1 (en) 2000-07-28 2002-02-13 Hypercar, Inc. Process and equipment for manufacture of advanced composite structures
DE10152232B4 (de) * 2001-10-20 2005-02-17 Daimlerchrysler Ag Verfahren und Vorrichtung zum automatisierten Handhaben von Harzmatten bei der Herstellung von SMC-Teilen
DE102006060361B4 (de) * 2006-12-20 2012-06-28 Airbus Operations Gmbh Transportgreifer und Verfahren zum Transportieren eines flexiblen Flächenmaterials
FR2912077B1 (fr) * 2007-02-06 2009-05-01 Eads Europ Aeronautic Defence Dispositif de maintien et de depose de matiere composite thermoplastique sur un outillage de mise en forme et procede de fabrication d'une piece composite
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Also Published As

Publication number Publication date
WO2014095002A1 (fr) 2014-06-26
DE102012112416A1 (de) 2014-06-18

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