WO2014060092A1 - Dispositif de guidage d'une pluralité de fils destinés à la production d'un élément composite renforcé par des fibres - Google Patents

Dispositif de guidage d'une pluralité de fils destinés à la production d'un élément composite renforcé par des fibres Download PDF

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Publication number
WO2014060092A1
WO2014060092A1 PCT/EP2013/003097 EP2013003097W WO2014060092A1 WO 2014060092 A1 WO2014060092 A1 WO 2014060092A1 EP 2013003097 W EP2013003097 W EP 2013003097W WO 2014060092 A1 WO2014060092 A1 WO 2014060092A1
Authority
WO
WIPO (PCT)
Prior art keywords
threads
guide device
composite component
coil spring
guide
Prior art date
Application number
PCT/EP2013/003097
Other languages
German (de)
English (en)
Inventor
Wolfgang Hoeck
Original Assignee
Wolfgang Hoeck
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 Wolfgang Hoeck filed Critical Wolfgang Hoeck
Priority to DE112013005069.2T priority Critical patent/DE112013005069A5/de
Publication of WO2014060092A1 publication Critical patent/WO2014060092A1/fr

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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/525—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/16—Guides for filamentary materials; Supports therefor formed to maintain a plurality of filaments in spaced relation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/38—Thread sheet, e.g. sheet of parallel yarns or wires

Definitions

  • Guiding device for guiding a plurality of threads for producing a fiber composite component
  • the invention relates to a guide device for guiding a plurality of threads for producing a composite component.
  • Composite components in particular fiber composite components gain in recent time, in particular for means of transport, such as aircraft and automobiles, increasingly important because the means of transport can be produced with the help of such fiber composite components with lower weight.
  • Carbon fibers or fibers are increasingly used as fibers.
  • a guide device for guiding a plurality of threads for producing a composite component in which a guide element, the transversely to a direction of movement of the threads spaced passages for the Has threads to a perpendicular to a plane in which the threads move, directed axis is pivotable.
  • the guide element Upon pivoting of the guide element, the distance between the passages and thus the density with which the threads are deposited on a base changes.
  • the invention has for its object to provide a guide device for guiding a plurality of threads for producing a composite component, which allows a high degree of flexibility of setting the distance between the passages with a simple structure, so that the respective thread density flexible to the requirements of Composite component can be adjusted.
  • the guide element is formed by a simple coil spring, between the turns through which the threads run.
  • the axial width of the interspaces between the turns or the pitch of the helical spring, in whole or in places, can be adjusted online by means of an adjusting device during operation, ie while threads pass through the guide device.
  • This allows a continuous on-demand charging of a carrier material with threads. By means of this charging, it is possible to supply the threads continuously in accordance with the strength requirement and / or the contour or structure of the finished fiber composite component, whereby only minimal losses of fiber-coated material occur when cutting the respective semi-finished product (composite of carrier material and plurality of fibers) ,
  • FIG. 1 shows a schematic view of an apparatus for producing a fiber composite component
  • FIG. 2 shows a schematic front view of a guide device according to the invention, viewed in the direction II-II of FIG. 1,
  • Figure 3 is a plan view of a portion of the device of Figure 2
  • Figure 4 is a side view of the device according to Figure 2 and
  • FIGS. 5 to 11 show examples of fiber arrangements made possible by the guiding device according to the invention.
  • a device for producing a fiber composite component has a yarn supply station 10, a yarn guide station 12, a carrier material supply station 14, a joining station 16, a cutting station 18 and a forming station 20.
  • the yarn supply station a plurality of threads is stored on supply rolls.
  • the different threads can have different strength or mechanical properties and consist of different materials.
  • the term fiber and the term thread are not strictly distinguished. Usually a thread contains several fibers. However, in synthetic filaments, for example glass fibers or carbon fibers, this is not mandatory because the single fiber may be extruded as a filament.
  • a carrier material for example a film, a fleece or a textile is mounted on a supply roll.
  • Joining station 16 includes two interfitting joining rollers 22 which are rotationally driven for rotation in opposite directions.
  • the joining station 16 includes a heater 24th
  • FIG. 2 which shows a view of the yarn guide station 12 in the direction of the arrows II-II in FIG. 1, a helical spring 28 extends between the windings 29, the yarns 26 being moved transversely to the direction of movement of the yarn supply station 10 the interspaces between the turns 29 form passages for the threads 26.
  • the threads 26 are shown in Fig. 2 with a large diameter, which is deformed at small pitches of the helical coil spring. Usually, the threads have a smaller diameter such that it is not or only slightly deformed when passing through the coil spring.
  • the coil spring 28 is suspended on a holding device which is formed by a tensioning cable 30 which is clamped between stationary brackets 32.
  • the tensioning cable 30 extends through the coil spring 28 along its entire axial length.
  • the screws Benfeder is attached at its axial ends to a respective holder 34 and 36 respectively.
  • the brackets 34 and 36 are mounted on slides 38, 40, of which at least one in the axial direction of the coil spring 28 is movable. In its lower region, the helical spring is penetrated axially by a thread support rod 41.
  • FIG. 3 is a plan view of parts of the guide device of Figure 2, in addition to the carriage 38 and 40, a further slide 42 is guided axially movable.
  • the carriage 42 has an internal thread which meshes with an external thread of a threaded rod 44, which is rotatably mounted in stationary bearing blocks 46 and is driven in rotation by means of an electric motor 48.
  • a finger 50 protrudes into the coil spring 28, so that the finger 50 comes into contact with a winding 29 of the coil spring 28 during a movement in the axial direction.
  • the distance between two adjacent turns 29, in a uniform manner that is, the distance between the threads 26, which corresponds to the pitch of the coil spring 28, changes uniformly over the entire length of the coil spring 28.
  • the pitch of the coil spring can be inhomogeneously changed, that is, in the example of Figures 2 and 3, the carriage 42 is moved to the right so that the right of the finger 50 arranged portion of the coil spring 28 is compressed and the left of the finger located part of the coil spring 28 is stretched, the pitch of the coil spring 28 on the left side of the finger 50 is greater than the right side of the finger 50, whereby the distances between the threads 26 change accordingly.
  • a plurality of independently movable slides 42 may be provided which engage with corresponding fingers 50 at axially adjacent locations in the coil spring 28.
  • the respective fingers 50 can also directly encompass a respective turn 29 of the helical spring 28, so that this turn follows immediately after every movement of the finger 50.
  • threads 26 arranged next to one another are withdrawn from the yarn supply station 10 by means of the joining rollers 22 of the joining station 16 and moved through the yarn guiding station 12.
  • the joining station 16 will be the threads 26 are joined together with carrier material 64 removed from the carrier material supply station 14, the side of the carrier material 64 facing the threads 26 being coated, for example, with a thermoplastic resin.
  • the composite of carrier material 64 and applied to the substrate 64 fibers 26 is heated, so that a stable and after cooling partially cured composite is formed, which is transported by a pair of transport rollers 66 and passes through the cutting station 18, in the possibly. for the fiber composite components not required edge areas are cut off.
  • the flat fiber composite component blanks are transported by another pair of transport rollers 68 in the forming station 20 in which they are formed into three-dimensional fiber composite components 70, the edges of which can optionally be cut by a further cutting station.
  • an electronic control device 72 To control the drive devices, cutters, heaters, etc. is an electronic control device 72, in the control programs are entered, according to which the entire device is controlled.
  • the thread support rod 41 forms a support for the threads 26, which protects the underside from contact with the coil spring 28.
  • the thread support rod 41 need not be disposed within the coil spring 28, but may also be arranged immediately adjacent the lower end or may be completely absent with a corresponding surface of the coil spring.
  • Figures 5 to 10 show examples of possibilities of depositing the threads 26 on a base sheet.
  • the direction of movement of the threads is in each case according to the figures from bottom to top. It should be noted that it is not absolutely necessary that all spaces between the turns 29 are covered with threads.
  • the left holder 36 according to FIG. 1 remains unchanged and the right holder 34 is moved in the direction of the left holder.
  • the holders 34 and 36 remain unchanged and two fingers 50 are provided, which engage in one or several central intermediate spaces between the turns and are both moved away from one another and then again toward one another.
  • a central round region 74 is formed, which is not covered with fibers 26.
  • both fingers 50 engage in the same space, it must not be covered with a thread for the production of the pattern shown in Figure 7.
  • the width of the central circular region 74 is limited by the maximum spread of a turn.
  • a plurality of intermediate spaces are not covered with threads and engage the fingers 50 in different occupied with or without strings interspaces, between the fingers 50 may not be occupied with threads interstices.
  • both holders 34 and 36 are moved to the right.
  • a middle passage between two fingers is moved back and forth in the axial direction of the helical spring 28, so that a thread 26a passing through this clearance is deposited meandering.
  • the respective turns adjacent to the mean turns are held stationary by means of corresponding fingers, so that the yarns 26a adjacent to the meandering thread 26a are furthermore laid down in a straight line.
  • the placement pattern of the threads 26 shown in dashed lines corresponds to that of FIG. 9, wherein in the region of a constriction 74 the distance between the holders 34 and 36 is additionally reduced.
  • Two thread systems 26c and 26d are laid over the threads 26 by means of two further guide devices operating, for example, with helical springs, the associated helical spring being moved overall from right to left above the helical spring depositing the threads 26 and the helical spring depositing the threads 26d is also disposed above the filaments 26 depositing coil spring and on which the threads 26c depositing coil spring can be moved laterally.
  • any number of guide devices can be provided one above the other, depending on the requirement.
  • the guide device is provided with a Schussfadenablage founded having two attached to the brackets 34 and 36 Schussvorbringertiv 80 which are rotatably driven about an axis parallel to the axis of the coil spring 28 axis by means not shown motors.
  • the Schussvorbringeriza 80 have on its circumference radially projecting, preferably tapered, circumferentially spaced driver 82 which detect a above the coil spring 28 along the coil spring on the brackets 34, 36 also supplied weft thread 84, take in the course of their rotation down and put on the threads 26.
  • the weft yarn is fed in a conventional manner by a feed arm 86 of a feed carriage 88, which is reciprocated by a drive means along a guide rail 90 extending transversely across the assembly.
  • Figure 1 1 shows an example of a deposition pattern of the weft thread 84 (dashed lines) on the yarn sheet or the threads 26.
  • the brackets 34 and 36 In area A and initially in area B, the brackets 34 and 36 have a constant distance. In the transition region between the areas B and C, one of the brackets is moved in the direction of the other, so that the storage width of the threads 26 in the area C assumes a minimum. Subsequently, the moving support is moved back to its original position, so that in the area D, the original storage width is achieved again.
  • the storage width of the meander-shaped deposited weft thread 84 adapts itself to the storage width of the threads 26.
  • the distance between two adjacent regions of the weft yarn 84 deposited across the yarns 26 can be varied by varying the rotational speed of the weft yarn wheels 80 and adjusting the frequency with which the feed carriage 88 is moved back and forth.
  • the weft thread can be stored obliquely to the threads 26, as shown in the area D.
  • the coil spring 28 may be suspended between a plurality of tensioning cables, which ensures that the radial width of the turns remains unchanged even in their axial displacement.
  • a wide variety of drive devices can be used for the displacement of the brackets 34 and 36 and of the finger or 50 . Not all illustrated roller pairs need to be rotationally driven. Individual pairs of rollers, for example the pair of rollers 62, may be dispensed with, or further pairs of rollers may be provided. The pair of rollers 62 is used in the illustrated example, only the proper introduction of the threads 26 in the thread guide station 12.
  • the heater 24 may be formed by a plurality of heated rollers, between which the composite of base film or carrier material 64 and threads 26 moves therethrough.
  • the cutting station 18 may be located behind the forming station 20. The cutting station and forming station can each move along the length of the blank or the molded body with the composite and then return to the respective exit point, so that during the cutting and shaping no interruption of the operation of the joining station 16 is required.
  • the guide device allows the filaments to be deposited according to a predetermined structure and contour.
  • the contour of the thread-covered carrier material largely corresponds to the contour required for producing the three-dimensional fiber composite component from the thread-coated carrier mat.
  • local “thickening” can be created by the application of additional threads in sections or by omitting some threads in the current process.
  • more thread or a larger thread length can be stored as needed on the support mat. For example, one or more threads are laid meander-shaped (as shown in FIG. 9) or zigzag-shaped onto a region of the carrier material which is stretched during the later forming into the three-dimensional fiber composite component.
  • the carrier material may be a film of thermoplastic or thermosetting plastic. However, it may also be a non-woven or textile material made of fibers, for example aramid fibers, glass fibers, fibers of thermoplastic material and / or of carbon fibers, which is optionally mixed with binders.
  • the fibers or threads which are applied to the carrier material can also be of very different types, wherein plastic fibers, glass fibers, carbon fibers, metal fibers or wires, etc. can be used.
  • the fibers may be in the form of individual fibers, in the form of rovings, monofilaments (wires), etc.
  • the carrier material may be coated with a thermoplastic, adhesive, etc.
  • a solvent can be applied to this, for example, immediately before the inlet into the joining station or in the joining station.

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

Abstract

L'invention concerne un dispositif de guidage permettant de guider une pluralité de fils (26) aux fins de production d'un élément composite renforcé par des fibres, ledit dispositif comprenant un élément de guidage doté de passages espacés les uns des autres perpendiculairement à la direction de défilement des fils, ces passages étant destinés aux fils, et un dispositif de réglage permettant de régler les distances séparant les passages, l'élément de guidage étant un ressort hélicoïdal (28) dont les intervalles entre les spires forment les passages, et le dispositif de réglage permettant de modifier la largeur d'au moins certains intervalles axiaux étant conçu entre les spires.
PCT/EP2013/003097 2012-10-19 2013-10-15 Dispositif de guidage d'une pluralité de fils destinés à la production d'un élément composite renforcé par des fibres WO2014060092A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112013005069.2T DE112013005069A5 (de) 2012-10-19 2013-10-15 Führungsvorrichtung zum Führen einer Mehrzahl von Fäden zur Herstellung eines Faserverbundbauteils

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012020624.0 2012-10-19
DE102012020624.0A DE102012020624A1 (de) 2012-10-19 2012-10-19 Führungsvorrichtung zum Führen einer Mehrzahl von Fäden zur Herstellung eines Faserverbundbauteils

Publications (1)

Publication Number Publication Date
WO2014060092A1 true WO2014060092A1 (fr) 2014-04-24

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ID=49448094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/003097 WO2014060092A1 (fr) 2012-10-19 2013-10-15 Dispositif de guidage d'une pluralité de fils destinés à la production d'un élément composite renforcé par des fibres

Country Status (2)

Country Link
DE (2) DE102012020624A1 (fr)
WO (1) WO2014060092A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107639857A (zh) * 2016-07-21 2018-01-30 福特全球技术公司 制造螺旋弹簧的方法以及制造螺旋弹簧半成品的装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886879A (en) * 1955-04-06 1959-05-19 American Enka Corp Warp guide
DE102008040282A1 (de) * 2008-07-09 2010-01-14 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung eines Fadengeleges

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3677484A (en) * 1969-12-09 1972-07-18 Polymer Processing Res Inst Method for winding up a thin layer material having a broad width
US3638290A (en) * 1970-09-04 1972-02-01 Deering Milliken Res Corp Apparatus for producing nonwoven fabrics
NZ262707A (en) * 1993-03-04 1997-07-27 Feltex Modular Carpets Pty Ltd Carpet formed by bonding yarns in zig-zag fashion to opposed faces of adhesive layers and then cutting through sandwiched layer, with yarns supplied via uniform tensioning in the yarns

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886879A (en) * 1955-04-06 1959-05-19 American Enka Corp Warp guide
DE102008040282A1 (de) * 2008-07-09 2010-01-14 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung eines Fadengeleges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107639857A (zh) * 2016-07-21 2018-01-30 福特全球技术公司 制造螺旋弹簧的方法以及制造螺旋弹簧半成品的装置

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Publication number Publication date
DE112013005069A5 (de) 2015-07-02
DE102012020624A1 (de) 2014-04-24

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