WO2013139451A2 - Procédé et dispositif de fabrication d'une nappe proche de l'état final - Google Patents

Procédé et dispositif de fabrication d'une nappe proche de l'état final Download PDF

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Publication number
WO2013139451A2
WO2013139451A2 PCT/EP2013/000744 EP2013000744W WO2013139451A2 WO 2013139451 A2 WO2013139451 A2 WO 2013139451A2 EP 2013000744 W EP2013000744 W EP 2013000744W WO 2013139451 A2 WO2013139451 A2 WO 2013139451A2
Authority
WO
WIPO (PCT)
Prior art keywords
gel
machine
layer
threads
transport
Prior art date
Application number
PCT/EP2013/000744
Other languages
German (de)
English (en)
Other versions
WO2013139451A3 (fr
Inventor
Andreas SCHNABEL
Thomas Gerhard GRIES
Philipp ABEL
Original Assignee
Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)
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 Rheinisch-Westfälische Technische Hochschule Aachen (RWTH) filed Critical Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)
Publication of WO2013139451A2 publication Critical patent/WO2013139451A2/fr
Publication of WO2013139451A3 publication Critical patent/WO2013139451A3/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
    • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
    • D04B21/165—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/10—Flat warp knitting machines for knitting through thread, fleece, or fabric layers, or around elongated core material
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/02—Reinforcing materials; Prepregs

Definitions

  • the invention relates to a method for producing a multilayer
  • the invention further relates to a device for producing a multilayer
  • multiaxial Geleges comprising a machine, in particular automatic tricot machines with a predetermined constant transport width, in particular for carrying out the method.
  • Fiber bundle orientation to be used as reinforcing textiles in components made of fiber reinforced plastics.
  • Automata having a predetermined constant transport width e.g. in
  • Such scrims are impregnated after production and thus form a component made of a fiber composite plastic.
  • the intervention is carried out by the fact that the threads or bundles of filaments in such a machine are guided back and forth between the two sides of such a machine by means of a weft inserter and are thereby brought into the transport elements, e.g. Needles or hooks are inserted.
  • the threads or bundles of threads of all gel layers are inserted into the transport system, so that all gel layers are transported simultaneously and without distortion in the machine, e.g. to a connection unit in which the gel layers are connected.
  • a warp knitting machine this is done e.g. in a knitting unit, in which knitting threads are guided by needles through the gel layers and placed in stitches.
  • components that are to be reinforced with or made from such layers have widths or generally outer contours that are smaller than the width (and, if applicable, length) of a backing produced in this manner and adapted to the transport width of the machine.
  • a high waste due to the gel shares which must be cut to achieve the desired later final contour of the component to be manufactured from the scrim, in particular cut off.
  • a waste of the order of about 50% can be produced.
  • a recycling of the waste is so far little established or associated with quality disadvantages, so that usually causes the blending high costs.
  • Catenary machines can be used. This object is achieved in that in the machine with the constant transport width a lower layer of gel thread or
  • Filament bundles is placed in the transport elements of the transport system of the machine and continues to this lower gel layer at least one more gel layer of threads or filament bundles or at least one semi-finished, the width of the gel layer is smaller than the predetermined constant transport width, in particular at least partially related close to final contour is placed on a component to be produced from the clutch and the at least one further gel layer is pulled together with the lower gel layer by the attacking at this lower gel level transport system by a connection unit of the machine.
  • a device adapted to carry out the method e.g. comprises a control in which a contour is stored, which corresponds to the final contour of a component to be produced or comes close, i. within a tolerance or safety measure corresponds to, by means of the controller a storage device of the
  • Device is driven to lay threads, filament bundles or whole semi-finished products according to the stored contour in at least one other gel level on the lower gel level.
  • the at least one further gel layer can be connected to the lower gel layer, i. it can e.g. all gel layers are connected to each other or only on the lower gel layer other Gelgelagen lying.
  • this lower layer of gel can be made of the same material, as the at least one more gel layer or from another material. It can be used especially then another material, if the lower Gelegelage serves only for transport purposes. For example, then a lower material quality of the threads / filament bundles can be used.
  • Gelegelage is a part of the entire fabric produced or in another embodiment exclusively for transport purposes, but does not become part of the finished Geleges.
  • the advantage of the invention is particularly great in that the at least one further layer of gel at least partially, i. at least in the region of a partial circumference of the gel layer is deposited according to a desired component contour of a manufactured from the fabric component on the lower gel layer, wherein the desired component contour is at least in width smaller than the transport width of the machine, and in particular may be shorter in length than that Total length of the lower layer of gel required for the manufacture of the component for transport.
  • the at least one further layer of gel in the region of its overall circumference is laid close to its final contour relative to a component to be manufactured later.
  • the at least one layer of gel above the lower layer of gel preferably the several further layers of gel above the lower layer of gel, by a defined tolerance measure or safety measure, For example, 1 to 20% larger, preferably only 1 to 10% is set larger than the contour dimension of the component to be produced.
  • the contour to be applied to the at least one further gel layer in the aforementioned control can be stored as a contour of the component to be produced plus the safety measure or tolerance measure.
  • This embodiment of the depositing takes place according to the invention at least in such a way that the near-net shape execution is given at least in the region of a partial circumference of the entire gel layer, preferably in the region of the entire outer circumference, that is to say the entire outer contour. Accordingly, a contour can then be stored analogously to the partial circumference or to the entire circumference in the controller.
  • a clutch is therefore in the sense of the invention near net shape related to a component to be produced, if at least in a partial extent of the Geleges the contour of the contour of the contour of the component to be produced or greater by said fixed dimension.
  • the contour of the jaw follows the actual later contour of the component and is thus identical in shape.
  • the abovementioned contour dimension of the component to be produced can be, for example, the dimension based on a dimensional origin of the component or else a length dimension between two mutually opposite contour edges of the later component.
  • the at least one further gel layer in particular all other gel layers, are preferably selected in terms of fiber quantity, fiber orientation and orientation and fiber type according to the component to be produced.
  • Gel layers are used, e.g. a lower layer of gel as a transport layer with a constant width, which enters the scrim and three stored on it
  • Transport position with constant width which does not enter the clutch and four deposited near net shape gelgelagen.
  • An adaptation to the later component contour can also be achieved in addition by the number of other laid gel layers, which may be different locally on the lower gel level.
  • the conventional transport system of a machine for the production of opportunities e.g. a tricot machine can be used, since the lower layer of gel with this in a known manner is engaged and thus the lower layer of gel is transported in a known manner.
  • the at least one further layer of gel at least on one side of the machine preferably on both sides of the machine is free from interference to the transport system of the machine.
  • the at least one further gel layer preferably any further gel layer on both sides without interference to the transport system, so the outer contour of such a gel layer has a distance to the transport elements of the transport system, in particular thus thus threads or bundles of filaments such a further gel layer not be inserted into the transport elements, in particular needles or hooks of a transport chain.
  • the transport of the entire Geleges takes place only in that the transport system attacks only on the lower gel level and the overlying Layers are transported by means of the lower layer of gel.
  • each additional gel layer lying on the lower gel layer can be made to have a near-net shape in the region of the entire circumference.
  • Connection unit of the machine are stabilized with each other, at least temporarily for the purpose of transport.
  • Such positional stabilization may e.g. be effected by spraying a binder before or after depositing a gel layer.
  • adhesive elements in particular threads of the nonwovens, can be placed between layers of gel. Adhesive threads can also form part of the threads of a gel layer.
  • thermoplastic elements in particular threads or powder can be placed between layers of gel or, in the case of threads, also form part of a gel layer.
  • Such thermoplastic elements can be thermally activated, i. are heated, in particular by radiation or by a heated stamp, which is brought into contact with the thermoplastic element or an above / before lying gel level.
  • the attitude stabilization can provide a compound of the gel layers with each other, which is sufficient to the overall through the
  • the lower layer of gel only serves for transport purposes and should not become part of the total layer, it can be provided to separate this lower layer of gel after the transport of all layers of gel through the connection unit from the remaining layers of gel, in particular for what in the connection unit only the other layers of gel above the lower layer of gel are joined together.
  • This compound can be done, for example, thermoplastic.
  • the lower layer of gel the threads of which e.g. provided with a size that reduces or prevents adhesion of thermoplastics can then be peeled off the other layers of gel after the compound unit.
  • Filament bundles of the lower gel layer are formed of a material which is soluble in a solvent and the lower gel layer after the
  • the lower layer of gel can be previously bonded to the other layers of gel, e.g. in a warp knitting machine by knitting threads. Due to the dissolution process this is not a problem.
  • the lower layer of gel remains in the total layer and e.g. is combined with knitting threads in a knitting unit of a tricot machine with the other layers, however, it forms the largest proportion of waste in a
  • connection of the gel layers in the connection unit can take place in that the machine is designed as a warp knitting machine and the connection takes place in its active unit by knitting threads which are guided with needles through the gel layers or thermoplastic threads or
  • Filament bundles are melted, in particular melted in a calender, wherein the thermoplastic threads / filament bundles are arranged between two or at least one of the gel layers, in particular in the lower gel layer are arranged or the lower
  • the lower layer of gel always in situ in the machine made of threads or bundles of fibers by laying operation of the threads or the bundle of threads in the transport elements of the transport system to produce the at least one more gel layer both by the laying of threads or bundles of filaments as well as by the deposition of at least one finished sheet semi-finished, so for example of textile fabrics, such as pre-assembled or unwound from a roll and cut strips or strips / tapes.
  • Such finished semi-finished products either themselves at least partially have a peripheral region which in the abovementioned sense is near-net shape to a component to be produced or the semi-finished products are placed / deposited in such a way that at least one partial peripheral region is close to the final contour of the
  • a gel layer can also be laid out of several semi-finished products that lie next to each other or that are partially overlapped. A gel layer then results from the sum of all semi-finished products lying in the plane of this gel layer.
  • the semi-finished products are preferably laid so that the outer contour of this gel layer produced in this way is at least in a region of the circumference, in particular completely close to the final contour.
  • the threads or bundles of threads or semi-finished products are deposited on the lower layer of gel by a depositing device which can be positioned and guided parallel to the lower layer of gel in the machine, in particular at variable angles and lengths.
  • the depositing device may be e.g. in a gantry or on one
  • Robot arm are guided, whereby you at least in the aforementioned level in two dimensions (XY direction) is movable, if necessary. Even three-dimensional positionable.
  • the filing device either filaments or bundles of filaments or else semifinished products can be laid, for example, in each case unwound from a stationary supply roll or a supply roll entrained with the filing device and optionally cut to length by a cutting device.
  • Transport direction of the machine is performed, so the threads or bundles of fibers so does not insert into the transport elements of the transport system.
  • Schußlegersystems is modified such that the Schußlegersystem for producing the other gel layer does not cover the full width perpendicular or at least across the width of the transport system, but the
  • Transport system in particular within a programmed stored in the control contour, in particular corresponds to the final contour of the component to be produced or this comes close in the above sense,
  • threads or filament bundles are also within such a stored contour. If necessary. are only the reverse loops of threads / bundles of fibers outside the stored contour or within. Threads or filament bundles can be laid as cut pieces or endless. For cut pieces, preferably no reverse loops occur. In this case, then the two-sided ends of the threads or bundles of fibers may lie within said stored contour or around it by a certain amount, preferably outside. Within a gel layer, the threads or bundles of fibers, possibly all but the reverse loops, can have the same orientation. However, the threads or bundles of filaments can also be laid spirally against each other starting from the inside outwards to the outside contour or from the outside on the outside contour.
  • Warp knitting machine are programmed, then the controller controls the Schußlegersystem so that it over the entire width of the
  • Transport systems threads or bundles of fibers in the transport elements of
  • Inserting transport system and so first produces the lower layer of gel and further deposits at least one more layer of gel on it, in particular wherein the reverse loops of the threads or bundles of filaments between the
  • At least one mobile needle which is movable and positionable below the lower layer of gel at the location of a desired reversal loop and pierces the lower layer of gel at this location from bottom to top, so that the
  • At least two mobile needles or two groups of mobile needles are used, which are each assigned to one side of the transport system, with which therefore reversal loops of the same direction reversal are always placed. It can then be provided a needle after laying a
  • Gelgelage carries all above gel levels and is inserted here only in the side areas in the transport system of the machine.
  • the connection between the transport system and the lower layer of gel can also be relieved of force. It can be provided to transport the support means in the transport direction of the lower layer of gel in the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Knitting Machines (AREA)
  • Knitting Of Fabric (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de fabrication d'une nappe en plusieurs couches, en particulier une nappe multiaxiale, dans un automate, particulièrement, un automate de métier à tricoter, comprenant une largeur de transport constante, prédéterminée. Dans l'automate, une couche inférieure de nappe constituée de fils ou de paquets de fils est posée dans les éléments de transport du système de transport de l'automate avec la largeur de transport constante, prédéterminée. Sur cette couche inférieure de nappe est posée au moins une autre couche de nappe à l'état au moins partiellement fini par rapport à un élément de structure à fabriquer à partir de la nappe et constitué de fils ou de paquets de fils ou au moins d'un produit semi-fini. La largeur de la couche de nappe est inférieure à la largeur de transport constante, prédéterminée, et au moins la couche de nappe supplémentaire comprenant la couche de nappe inférieure est tirée par le système de transport s'agrippant à la couche de nappe inférieure par l'intermédiaire d'un moyen de liaison de l'automate.
PCT/EP2013/000744 2012-03-22 2013-03-13 Procédé et dispositif de fabrication d'une nappe proche de l'état final WO2013139451A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012005625.7 2012-03-22
DE201210005625 DE102012005625A1 (de) 2012-03-22 2012-03-22 Verfahren und Vorrichtung zur Herstellung eines endkonturnahen Geleges

Publications (2)

Publication Number Publication Date
WO2013139451A2 true WO2013139451A2 (fr) 2013-09-26
WO2013139451A3 WO2013139451A3 (fr) 2013-11-14

Family

ID=48141886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/000744 WO2013139451A2 (fr) 2012-03-22 2013-03-13 Procédé et dispositif de fabrication d'une nappe proche de l'état final

Country Status (2)

Country Link
DE (1) DE102012005625A1 (fr)
WO (1) WO2013139451A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114676608A (zh) * 2022-03-17 2022-06-28 江南大学 一种织物逐层分离过程中的屈曲模拟方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015002106A1 (de) 2015-02-23 2016-08-25 Basf Se Prozessanordnung sowie Verfahren zur Herstellung eines faserverstärkten Kunststoffbauteils

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Publication number Priority date Publication date Assignee Title
GB1290150A (fr) * 1969-12-05 1972-09-20
CA1151887A (fr) * 1979-10-05 1983-08-16 Daniel Duhl Dossier d'aiguilletage
DE10029871A1 (de) * 2000-06-09 2001-12-13 Univ Dresden Tech Faservertärkter Leichtmetall-Verbundwerkstoff und Verfahren zur Herstellung
DE102005052573A1 (de) * 2005-11-02 2007-05-03 Gries, Thomas Integrierter Fertigungsprozess bei Wirkmaschinen mit multiaxialem Schusseintragssystem
DE102006013063A1 (de) * 2005-11-07 2007-05-16 Kuempers Gmbh & Co Kg Verfahren und Vorrichtung zur Herstellung textiler Armierungen für technische Erzeugnisse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114676608A (zh) * 2022-03-17 2022-06-28 江南大学 一种织物逐层分离过程中的屈曲模拟方法

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Publication number Publication date
DE102012005625A1 (de) 2013-09-26
WO2013139451A3 (fr) 2013-11-14

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