EP2832906B1 - Fabric, method and device for its manufacture - Google Patents
Fabric, method and device for its manufacture Download PDFInfo
- Publication number
- EP2832906B1 EP2832906B1 EP14179661.5A EP14179661A EP2832906B1 EP 2832906 B1 EP2832906 B1 EP 2832906B1 EP 14179661 A EP14179661 A EP 14179661A EP 2832906 B1 EP2832906 B1 EP 2832906B1
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- warp
- threads
- weave
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D3/00—Woven fabrics characterised by their shape
- D03D3/06—Fabrics of varying width
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D31/00—Lappet, swivel or other looms for forming embroidery-like decoration on fabrics
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D5/00—Selvedges
Definitions
- the invention relates to a fabric with a plurality of linear and parallel warp threads and a plurality of linear and parallel weft threads.
- the invention relates to a corresponding method and a corresponding device.
- Fabrics have been known for thousands of years, using a wide variety of techniques. Warp threads running in the longitudinal direction are usually clamped next to one another, with a part of the warp threads being raised and a part being lowered in order to allow weft insertion perpendicular to the warp threads through the shed thus formed. Common to almost all known weaving techniques is that the outer sides of the fabrics are limited to linear contours in the warp direction. This means that the fabrics have fixed widths.
- form-fitting fabrics can be produced with the help of bobbin weaving technology.
- individual warp threads are not bound by the weft. These warp threads run "empty", but there is a large waste.
- V-reeds which change the local warp density in the warp direction to realize width variations of the fabric over the fabric length.
- this method is only used in narrow weaving.
- Another disadvantage is that only inhomogeneous fabrics can be manufactured and the flexibility of this method is extremely low.
- Another disadvantage is the increased and thus inefficient use of material and the arrangement of the reinforcing material, which is not always in accordance with the force flow.
- the JPH06272134 A can also not help to provide a form-fitting fabric.
- the JPH06272134 A describes a method for producing a woven fabric from glass fibers, in which first leno threads are used to bind the warp threads on the long sides of the woven fabric in a first region. Furthermore, additional second leno threads are woven into a second region of the fabric that is still further out. The fabric is cut between these two areas along a line running in the warp direction, the cut area being cut waste and the resulting fabric being delimited by the first leno threads.
- the outside contour of the fabric is formed by at least one additional warp thread that deviates from the straight warp direction (0 ° direction) and / or does not run continuously, the additional warp thread or threads being made of high-performance material, for example in the form of glass fibers, ceramic fibers, carbon fibers , Steel fibers or wire.
- the advantages of the invention are in particular that almost any tissue contours in the longitudinal direction of the tissue, i.e. in the stretched warp direction can be realized.
- fabrics can be designed according to the required semi-finished product geometries and directly, i.e. can be produced in one operation without waste.
- the fiber material used can be used extremely efficiently, while minimizing or completely avoiding waste.
- process stages can be saved and additional assembly stages can be largely avoided.
- the method according to the invention with the features of claim 10 can also be implemented relatively easily by means of modification and further development of known weaving technologies.
- the fabrics according to the invention are made with all textile or textile processable materials and in particular also with high-performance materials such as Can be produced in the form of glass fibers, carbon fibers, ceramic fibers, steel fibers, wire, thermoplastic materials, etc.
- high-performance materials such as Can be produced in the form of glass fibers, carbon fibers, ceramic fibers, steel fibers, wire, thermoplastic materials, etc.
- a fabric of linear and parallel warp and weft threads is present and the shaping by additional warp threads - at least in one or more Sections along the fabric on its longitudinal edges - is realized.
- a corresponding device is also part of the invention.
- the invention allows any tissue contours to be obtained.
- the contour can run at any angle between -90 ° and 90 °. Both angular and curved contours can be realized. Furthermore, both external and internal edges can be created. This enables a partial division of the tissue in the longitudinal direction into two or more parts. This final contour or shape design can also be used to form force application zones. Asymmetrical contours can also be realized.
- the linear and parallel warp threads and the linear and parallel weft threads form a first warp region with a constant width in the stretched warp direction (0 ° direction).
- the width of this first warp region corresponds to the minimum fabric width that can be realized.
- at least one additional warp thread preferably at least one thread group consisting of a plurality of additional warp threads running side by side (which then form a warp thread family), is present in order to define a second warp region which adjoins a long side of the first warp region.
- the at least one additional warp thread or the at least one thread group forms at least in one section along the fabric the maximum width of the second warp region which is offset in the weft direction from the first warp region.
- the second warp region forms a lateral nonlinear contour region of the fabric, that is to say in the longitudinal direction, that is to say the warp direction, of the fabric, at least in sections, that is to say in one or more sections that follow one another in the warp direction.
- “Section by section” here means that the second warp area in its Width fluctuates (this is the reason for the non-linear contour progression on the longitudinal fabric edge or edges) and the maximum width of the second warp region is only realized in sections by one or more additional warp threads.
- the width of the second warp region can also be zero in sections, that is, if the additional warp thread or threads in one or more sections are immersed in the warp direction in the first warp region.
- a plurality of thread groups each comprising a plurality of additional warp threads running next to one another, are provided in such a second warp region.
- These multiple thread groups preferably overlap at least in sections in the warp direction. In this way, different force introduction zones in the second warp area can be realized in particular.
- such a second warp region is present on both longitudinal fabric edges.
- the additional warp threads run within a thread group, preferably within each of the thread groups, with the same distance from one another in each case in the weft direction.
- Such an embodiment can be achieved particularly easily by means of a modification of the so-called open reed weave technology (weaving with an open reed), which is explained in more detail below.
- the distances of the thread groups to one another are preferably variably adjustable in the weft direction and / or in the warp direction.
- the fabric according to the invention has variable distances between additional warp threads in the weft direction - also within a thread group - these sections of variable distances when the additional warp threads run in the stretched warp direction (0 ° direction) and / or in the stretched warp direction (K ) deviating Direction and / or if they are not continuous, may be present.
- At least one said second warp region with at least one said thread group, each with a plurality of additional warp threads, is arranged on both sides of the first warp region. This means that almost any form-fitting tissue contours can be realized.
- the threads of the two second warp areas are bound by the weft thread in accordance with the desired contour.
- the fabric according to the invention is given a firm structure in particular if at least one and preferably several additional warp threads of at least one thread group cut at least one and preferably several warp threads of the first warp region. In these overlap areas there is therefore a high warp density, which contributes to the higher fabric resilience.
- the lateral limitation of the fabric can be realized in different ways.
- the weft threads have a constant length, the protruding threads being cut off subsequently.
- bobbin protection technology is used, in which the weft thread is deflected at the fabric edge.
- the rapier weaving technique is used, the weft thread having a defined length while realizing a variable rapier stroke. With the latter two methods, a contoured fabric with a firm edge can be produced without loss of material.
- all other weft insertion methods in which the stroke can be designed variably can also be used.
- variant 2 at least some of the additional warp threads delimiting the fabric are interrupted in the weaving direction and then, ie after several defined shot cycles, resumed in the tissue. In this way too, lateral contouring (width contour) of the fabric can be achieved.
- variant 3 Another variant of the invention (also referred to below as variant 3) is characterized in that one or more additional warp threads are integrated into the fabric according to the desired width contour.
- at least one additional warp thread is designed as an adhesive thread which is woven into the fabric and forms an adhesive connection with the warp and weft threads.
- the at least one additional warp thread provided for width contouring consists of thermoplastic material, which is melted onto the fabric.
- the fabric is cut along the said at least one additional warp thread to the final contour.
- the fabric is particularly preferably produced using the principles of the so-called open reed weave, which is used, for example, in the DE 10 2010 007 048 A1 is described.
- additional thread weft effects are achieved during the manufacture of a rectangular fabric, in that at least one effect thread is displaced from an upwardly open reed gap by means of an offset device which can be moved back and forth in the weft direction and is immersed in another open reed gap of the reed. Then a weft thread is inserted. If the effect thread is to be placed again in another direction in the weft direction, it is again transferred from one reed gap to another reed gap before the next weft insertion.
- the warp thread offset device is designed in such a way that - for the production of at least one second warp region (see above) - instead of an effect thread always placed within the rectangular fabric, at least one additional warp thread is now placed in sections outside of this rectangle and for an outside contouring of the fabric - at least in sections - is used.
- the warp thread offset device can thus be varied back and forth in the weft direction beyond the edge regions of the fabric produced from linear warp and weft threads in accordance with the desired final contour of the fabric.
- a second warp region can be produced on each longitudinal side of the fabric, which has a contour that deviates from the stretched warp direction.
- a plurality of thread groups each with a plurality of additional warp threads running side by side, are to be provided in a second warp region
- a plurality of warp thread offset devices arranged one behind the other in the longitudinal or warp direction of the warp are preferably used, as indicated above. In this way it can also be achieved that the several thread groups overlap in sections.
- the additional warp threads which can be displaced by means of the warp thread offset device (s) can be arranged both in the warp direction and also diagonally or deviating from the warp direction.
- the configuration of the open reed also makes it easy to implement that at least one additional warp thread of a second warp region cuts at least one warp thread of the first warp region.
- a fabric according to variant 3 can also be realized by further developing the open reed weave by integrating one or more additional warp threads in the fabric according to the desired final width contour.
- these additional threads consist of thermoplastic material which is melted, or are designed, for example, as adhesive threads. The cut is then made along the (outermost) additional warp threads in order to obtain the desired shape of the fabric.
- This additional warp thread can also be designed as a marker thread (for example colored or metallic) and can be used to control the cut.
- the Figure 1 shows a fabric 1 according to the invention in plan view.
- the fabric 1 has a plurality of linear and parallel warp threads 2 and a plurality of linear and parallel weft threads 3.
- the weft threads 3 protrude beyond this first warp region 4, which has a constant width.
- a second warp region 10 and 11 adjoins each side on the left and right, each of a thread group 12 or 13, each with a plurality of additional warp threads 5 or 6 can be defined.
- four additional warp threads 5 and five additional warp threads 6 made of, for example, ceramic fibers or carbon fibers are provided (for the sake of clarity, they are drawn with wider lines).
- the additional warp threads 5 are at the same distance from one another in the weft direction S.
- the additional warp threads 6 are at the same distance from one another in the weft direction S. Also in the exemplary embodiment shown according to FIG Figure 1 It is provided that the distance from adjacent additional warp threads 5, 6 is the same as the distance from adjacent warp threads 2. However, this is not necessarily the case, but depends on the configuration of the spacings of the warp thread offset device and its thread assignment.
- the additional warp threads 5, 6 have a course deviating from the stretched warp direction K (0 ° direction).
- the additional warp threads 5, 6 bend obliquely inwards (section 21) after a section 20 running in the warp direction K, in turn run there linearly in the stretched warp direction K (section 22) until they each bend outwards at an angle (Section 23) to then align with the original direction of Section 20 (Section 24).
- the additional warp threads 5, 6 run differently from the stretched warp direction K.
- the first warp region 4 is therefore defined in that only linear and parallel warp threads 2 are present in it, while only additional warp threads 5, 6 run in the second warp regions 10, 11.
- the additional warp threads 5, 6 do not run exclusively in the second warp regions 10, 11, but also in sections in the first warp region 4.
- the courses, the number, the distances, the materials etc. of the additional warp threads 5, 6 in the Figure 1 are exemplary.
- Other gradients and thus other contours can easily be realized, for example contours with any angular course between -90 ° and 90 °, angular and curved contours, outside and inside edges as well as asymmetrical contours.
- 0 ° denotes the (stretched) warp direction K and 90 ° the weft direction S.
- the contour or shape-appropriate design can also be used to form force application zones; according to the Figure 1 be present in all sections 20-24.
- two thread groups 12 and 14, each with a plurality of additional warp threads 5, 7, are provided in the left second warp region 10, the two thread groups 12, 14 having a different thread course.
- the additional warp threads 5, 7 of the two thread groups 12, 14 do not intersect, but on the left fabric edge in the two sections 25 and 26 due to the different radii of the arc.
- the two thread groups 12, 14 again run essentially parallel.
- the course of the additional warp threads 6 on the right fabric edge in sections 25, 26 corresponds to the non-linear course in sections 21, 23 of the right fabric edge in FIG Fig. 1 .
- the fabric 1 according to the Figure 3 is the contour analogous to the fabrics 1 according to the Figures 1 and 2 realized.
- the weft thread 3 is not inserted with a constant length, but in a length that is appropriate for the needs.
- the known bobbin shooter weaving technique is preferably used, in which weft deflections 17 are realized on the fabric edge 18.
- the additional warp threads 5, 6 again run differently from the stretched warp direction K.
- rapier weaving technology in which a variable rapier stroke is set for edge or contour production.
- weft threads 3 are entered with a defined, variable length, see. Figure 4 .
- a variable weft insertion can be carried out using air, water or projectile.
- two sections 28 are shown, in which additional warp threads 5, 6 deviate from the stretched warp direction K.
- FIG. 5 a further embodiment of the invention is shown (also referred to above as "variant 2").
- Positionable additional warp threads 8 are used there, which were specifically switched off from the weaving process and reinserted into this.
- these additional warp threads 8 - depending on the weaving progress - are excluded from the weaving process by cutting.
- the outermost additional warp thread 8 is first cut through in the second warp region 10, then the adjacent additional warp thread in the further weaving process, etc.
- the additional warp threads to be reintroduced in the later weaving process are stored outside the fabric (“temporarily stored”) and inserted again at the intended time.
- the innermost additional warp thread 8 is first reintroduced into the weaving process in the left second warp region 10, then the one adjacent to the outside, etc.
- a smaller, right second warp region 11 is also provided, which in the present case consists of only two additional warp threads 8.
- the configuration of the additional warp threads 8 results in a longitudinal contour course of the fabric 1 that deviates from the straight or linear warp direction K.
- the additional warp threads 9 being designed as adhesive threads, marker threads or as threads made of a thermoplastic material.
- the additional warp thread (s) 9 (several such additional warp threads 9 can be provided side by side) into the warp and weft threads 2, 3 existing fabric 1 integrated according to the desired long side contour.
- the additional warp threads 9 in the sections 30 form a contour course of the fabric 1, which (except for the smallest lengths in the region of the deflection on the fabric edges) over the entire fabric section of the Fig. 6 deviates from the stretched warp direction K.
- the excess weft threads 2 are then cut off.
- the additional warp threads 9 give the fabric 1 stable edges, which significantly improves its handling.
- the tissue can be tied according to the desired contour.
- the additional warp threads 5, 6, 7, 8, 9 takes place particularly preferably by means of a further development of the known open reed weave.
- the additional warp threads are introduced by means of one or more warp thread offset devices (then arranged one after the other in the warp direction K) beyond one or both long sides of the first warp region 4, which have a constant width, and in this way one or two second warp regions 10, 11 created.
- the additional warp threads 5, 6, 7 also dip into the first warp region 4 in sections.
- the first warp area 4 has a width that is constant over the fabric length, while the second warp areas 10, 11 to the right and / or left next to the first warp area 4 are variable.
- individual warp threads can be specifically engaged or excluded from the weaving process. This makes it possible to change the width of the fabric without changing the local warp density - in contrast to using a V-reed.
- individual warp threads (exemplary embodiments according to FIG Figures 1-4 ) can be arranged according to requirements at almost any angle (outside the 0 ° position). In this way, tissue that is suitable for force flow, local force application zones and tissue with gradient properties can be realized.
- Such force introduction zones can also be realized, for example, by additional warp threads, which (also) determine the non-linear contours that deviate from the stretched warp direction or via the fabric consisting of linear warp and weft threads, for example from one fabric longitudinal side to the other and possibly again - at least partially - run back.
- additional warp threads for the non-linear final contour of the fabric are present according to the invention.
- Two additional warp threads or thread groups consisting of several additional warp threads, which may cross each other repeatedly in the stretched warp direction K, can also be implemented, these configurations also being only mentioned as examples. It is common to all fabrics according to the invention that they have non-linear contours which deviate from the stretched warp direction K and which are achieved by at least one additional warp thread.
- variable weft lengths can also be realized, which enables a weft length adapted to the local fabric width. This eliminates the need for subsequent cutting and shot waste is avoided.
- the invention realizes an automatically producible form-fitting fabric with the best possible use of the fiber material to be used for the production of near-net-shape tissue with reinforcing material arranged according to requirements.
- the entire system is highly variable and allows absolute flexibility with regard to the contours that can be achieved and the arrangement of the reinforcement material.
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Description
Die Erfindung betrifft ein Gewebe mit einer Mehrzahl von linear und parallel verlaufenden Kettfäden und einer Mehrzahl von linear und parallel verlaufenden Schussfäden. Zudem betrifft die Erfindung ein entsprechendes Verfahren und eine entsprechende Vorrichtung.The invention relates to a fabric with a plurality of linear and parallel warp threads and a plurality of linear and parallel weft threads. In addition, the invention relates to a corresponding method and a corresponding device.
Gewebe sind seit Jahrtausenden bekannt, wobei verschiedenste Techniken verwendet wurden und werden. Üblicherweise werden in Längsrichtung verlaufende Kettfäden nebeneinander eingespannt, wobei ein Teil der Kettfäden angehoben und ein Teil abgesenkt wird, um durch das somit gebildete Webfach einen Schusseintrag senkrecht zu den Kettfäden zu ermöglichen. Nahezu allen bekannten Webetechniken ist gemein, dass die Außenseiten der Gewebe in Kettrichtung auf lineare Konturen begrenzt sind. Dies bedeutet, dass die Gewebe feste Breiten besitzen.Fabrics have been known for thousands of years, using a wide variety of techniques. Warp threads running in the longitudinal direction are usually clamped next to one another, with a part of the warp threads being raised and a part being lowered in order to allow weft insertion perpendicular to the warp threads through the shed thus formed. Common to almost all known weaving techniques is that the outer sides of the fabrics are limited to linear contours in the warp direction. This means that the fabrics have fixed widths.
Es besteht jedoch ein Bedarf an insbesondere endkontur- bzw. formgerechten Geweben, die auch als "regulär" bezeichnet werden, für beispielsweise Halbzeuge aus preisintensiven Hochleistungsfasermaterialien, wie z.B. aus Keramikfasern oder Kohlenstofffasern. Um derartige formgerechte Strukturen zu realisieren, werden daher verschiedene Zuschnittmethoden eingesetzt, woraus jedoch Verschnitte und somit Materialabfälle resultieren und zudem ein hoher zeitlicher und manueller sowie finanzieller Aufwand vonnöten ist. Des Weiteren verfügen solche formgerechten Strukturen verfahrensbedingt nur über lose Kanten, was die Handhabung deutlich erschwert und zum Ausfransen der Kanten führen kann.However, there is a need for fabrics that conform to the final shape or shape and are also referred to as "regular", for example for semi-finished products made of expensive high-performance fiber materials, such as e.g. made of ceramic fibers or carbon fibers. In order to realize such form-fitting structures, various cutting methods are used, which, however, result in waste and thus material waste and also require a lot of time, manual and financial effort. Furthermore, due to the process, such form-fitting structures only have loose edges, which makes handling significantly more difficult and can lead to fraying of the edges.
Ein anderes Verfahren zur Herstellung formgerechter Textilstrukturen stellt das Formstricken dar, das allerdings auf die Maschentechnik beschränkt ist. Ein besonderer Nachteil ist, dass das Verfahren relativ langsam ist.Another process for the production of form-fitting textile structures is the form knitting, which is however limited to the stitch technique. A particular disadvantage is that the process is relatively slow.
Formgerechte Gewebe hingegen sind bisher nur eingeschränkt herstellbar. Beispielsweise sind in Kettrichtung abgelängte Gewebe bekannt, zu deren Herstellung Leerschüsse eingebracht und das Gewebe im entsprechenden Bereich getrennt wird. Auf diese Weise werden beispielsweise Frottierwaren konfektioniert.Form-fitting fabrics, however, have so far only been able to be produced to a limited extent. For example, fabrics cut to length in the warp direction are known, for the manufacture of which wefts are inserted and the fabric is separated in the corresponding area. In this way, for example, terry goods are made up.
In Schussrichtung können formgerechte Gewebe mit Hilfe der Spulenschützwebtechnik hergestellt werden. Dazu werden einzelne Kettfäden durch den Schuss nicht mit angebunden. Diese Kettfäden laufen "leer", wobei jedoch ein großer Verschnitt resultiert.In the weft direction, form-fitting fabrics can be produced with the help of bobbin weaving technology. For this purpose, individual warp threads are not bound by the weft. These warp threads run "empty", but there is a large waste.
Eine weitere Formgebungsmöglichkeit ist der Einsatz von sog. V-Webblättern, welche die lokale Kettdichte in Kettrichtung zur Realisierung von Breitenvariationen des Gewebes über die Gewebelänge verändern. In der
Da eine direkte Herstellung formgerechter Gewebe mittels eines V-Webblatts nicht möglich ist, erfolgt die Formgebung im Normalfall über die oben erwähnten aufwändigen Zuschnittprozesse mit dem damit einhergehenden Abfallanteil. Dieser ist aber insbesondere beim Einsatz der genannten Hochleistungsfasermaterialien extrem unwirtschaftlich.Since a direct production of form-fitting fabrics by means of a V-reed is not possible, the shaping is normally carried out using the above-mentioned complex cutting processes with the associated waste. However, this is extremely uneconomical, especially when using the high-performance fiber materials mentioned.
Die
Es ist die Aufgabe der vorliegenden Erfindung, ein zumindest abschnittsweise formgerechtes Gewebe, insbesondere aus Hochleistungsfaserstoffen, ohne die oben genannten Einschränkungen sowie ein Verfahren und eine Vorrichtung zu dessen Herstellung zur Verfügung zu stellen.It is the object of the present invention to provide a fabric, at least in sections, that conforms to the shape, in particular made of high-performance fiber materials, without the above-mentioned restrictions, as well as a method and a device for its production.
Diese Aufgabe wird bei dem eingangsgenannten Gewebe dadurch gelöst, dass die außenseitige Kontur des Gewebes zumindest abschnittsweise, d.h. in einem oder mehreren Abschnitten, durch mindestens einen von der gestreckten Kettrichtung (0°-Richtung) abweichend verlaufenden und/oder nicht durchgehend verlaufenden Zusatzkettfaden gebildet ist, wobei der bzw. die Zusatzkettfäden aus Hochleistungsmaterial bestehen, beispielsweise in Form von Glasfasern, Keramikfasern, Kohlenstofffasern, Stahl-Fasern oder Draht.This object is achieved in the fabric mentioned at the outset in that the outside contour of the fabric, at least in sections, i.e. in one or more sections, is formed by at least one additional warp thread that deviates from the straight warp direction (0 ° direction) and / or does not run continuously, the additional warp thread or threads being made of high-performance material, for example in the form of glass fibers, ceramic fibers, carbon fibers , Steel fibers or wire.
Die Vorteile der Erfindung liegen insbesondere darin, dass nahezu beliebige Gewebekonturen in Längsrichtung des Gewebes, d.h. in gestreckter Kettrichtung, realisierbar sind. Somit können insbesondere Gewebe entsprechend der benötigten Halbzeug-Geometrien gestaltet werden und direkt, d.h. in einem Arbeitsgang ohne Verschnitt, gefertigt werden. Mit anderen Worten kann das eingesetzte Fasermaterial äußerst effizient eingesetzt werden, während Abfall minimiert oder vollständig vermieden wird. Es können auf diese Weise Prozessstufen eingespart sowie zusätzliche Konfektionierungsstufen weitgehend vermieden werden. Das erfindungsgemäße Verfahren mit den Merkmalen des Anspruchs 10 lässt sich zudem relativ einfach mittels Abwandlung und Weiterentwicklung bekannter Webtechnologien realisieren.The advantages of the invention are in particular that almost any tissue contours in the longitudinal direction of the tissue, i.e. in the stretched warp direction can be realized. Thus, in particular, fabrics can be designed according to the required semi-finished product geometries and directly, i.e. can be produced in one operation without waste. In other words, the fiber material used can be used extremely efficiently, while minimizing or completely avoiding waste. In this way, process stages can be saved and additional assembly stages can be largely avoided. The method according to the invention with the features of
Die erfindungsgemäßen Gewebe sind mit allen textilen bzw. textil verarbeitbaren Materialien und insbesondere auch mit Hochleistungsmaterialien wie z.B. in Form von Glasfasern, Kohlenstofffasern, Keramikfasern, Stahl-Fasern, Draht, thermoplastische Materialien usw. herstellbar. Auch sind Kombinationen von beispielsweise Baumwollfasern oder Polyesterfasern für die aus dem Stand der Technik bekannte (innere) Gewebeform sowie Verstärkungsfasern aus z.B. Kohlenstofffasern als Zusatzkettfäden zur - zumindest abschnittsweisen - Bildung der gewebelängsseitigen Außenkontur möglich.The fabrics according to the invention are made with all textile or textile processable materials and in particular also with high-performance materials such as Can be produced in the form of glass fibers, carbon fibers, ceramic fibers, steel fibers, wire, thermoplastic materials, etc. Combinations of, for example, cotton fibers or polyester fibers for the (inner) fabric shape known from the prior art, as well as reinforcing fibers made of e.g. Carbon fibers as additional warp threads for - at least in sections - formation of the outer contour of the fabric along the length possible.
Wesentlich ist bei dem erfindungsgemäßen Verfahren, dass ein Gewebe aus linear und parallel verlaufenden Kett- und Schussfäden vorhanden ist und die Formgebung durch zusätzliche Kettfäden - zumindest in einem oder mehreren Abschnitten längs des Gewebes an seinen Längskanten - realisiert wird. Auch eine entsprechende Vorrichtung ist Teil der Erfindung.It is essential in the method according to the invention that a fabric of linear and parallel warp and weft threads is present and the shaping by additional warp threads - at least in one or more Sections along the fabric on its longitudinal edges - is realized. A corresponding device is also part of the invention.
Die Erfindung erlaubt es, beliebige Gewebekonturen zu erhalten. Die Kontur kann dabei in beliebigen Winkeln zwischen -90° und 90° verlaufen. Es können sowohl eckige als auch geschwungene Konturen realisiert werden. Des Weiteren können sowohl außen liegende als auch innen liegende Kanten erzeugt werden. Damit wird eine partielle Unterteilung des Gewebes in Längsrichtung in zwei bzw. mehrere Teile ermöglicht. Diese endkontur- bzw. formgerechte Gestaltung kann überdies zur Bildung von Krafteinleitungszonen eingesetzt werden. Asymmetrische Konturen sind ebenfalls realisierbar.The invention allows any tissue contours to be obtained. The contour can run at any angle between -90 ° and 90 °. Both angular and curved contours can be realized. Furthermore, both external and internal edges can be created. This enables a partial division of the tissue in the longitudinal direction into two or more parts. This final contour or shape design can also be used to form force application zones. Asymmetrical contours can also be realized.
Gemäß einer vorteilhaften Ausführungsform (nachfolgend auch als Variante 1 bezeichnet) bilden die linear und parallel verlaufenden Kettfäden und die linear und parallel verlaufenden Schussfäden einen ersten Kettbereich mit in gestreckter Kettrichtung (0°-Richtung) konstanter Breite. Die Breite dieses ersten Kettbereichs, dessen Breite dementsprechend durch eine Kettfadenschar der besagten linear und parallel laufenden Kettfäden definiert ist, entspricht der minimal zu realisierenden Gewebebreite. Des Weiteren ist gemäß dieser Ausführungsform mindestens ein Zusatzkettfaden, bevorzugt mindestens eine Fadengruppe aus mehreren nebeneinander laufender Zusatzkettfäden (die dann eine Kettfadenschar bilden), vorhanden, um einen zweiten Kettbereich zu definieren, der an einer Längsseite des ersten Kettbereichs anschließt. Der mindestens eine Zusatzkettfaden bzw. die mindestens eine Fadengruppe bildet zumindest in einem Abschnitt längs des Gewebes die maximale Breite des in Schussrichtung zum ersten Kettbereich versetzt verlaufenden zweiten Kettbereichs aus. Auf diese Weise formt der zweite Kettbereich randseitig (gesehen in Längsrichtung, d.h. Kettrichtung, des Gewebes) zumindest abschnittsweise, d.h. in einem oder mehreren, in Kettrichtung aufeinander folgenden Abschnitten, einen seitlichen nichtlinearen, d.h. von der gestreckten Kettrichtung abweichenden, Konturbereich des Gewebes. "Abschnittsweise" bedeutet hierbei, dass der zweite Kettbereich in seiner Breite schwankt (dies ist der Grund für den nicht-linear Konturverlauf an der oder den Gewebelängskanten) und die maximale Breite des zweiten Kettbereichs nur abschnittsweise von einem oder mehreren Zusatzkettfäden realisiert wird. Die Breite des zweiten Kettbereichs kann auch abschnittsweise null sein, wenn also der oder die Zusatzkettfäden in einem oder mehreren Abschnitten in Kettrichtung in den ersten Kettbereich eintauchen.According to an advantageous embodiment (hereinafter also referred to as variant 1), the linear and parallel warp threads and the linear and parallel weft threads form a first warp region with a constant width in the stretched warp direction (0 ° direction). The width of this first warp region, the width of which is accordingly defined by a warp thread group of the said linear and parallel warp threads, corresponds to the minimum fabric width that can be realized. Furthermore, according to this embodiment, at least one additional warp thread, preferably at least one thread group consisting of a plurality of additional warp threads running side by side (which then form a warp thread family), is present in order to define a second warp region which adjoins a long side of the first warp region. The at least one additional warp thread or the at least one thread group forms at least in one section along the fabric the maximum width of the second warp region which is offset in the weft direction from the first warp region. In this way, the second warp region forms a lateral nonlinear contour region of the fabric, that is to say in the longitudinal direction, that is to say the warp direction, of the fabric, at least in sections, that is to say in one or more sections that follow one another in the warp direction. "Section by section" here means that the second warp area in its Width fluctuates (this is the reason for the non-linear contour progression on the longitudinal fabric edge or edges) and the maximum width of the second warp region is only realized in sections by one or more additional warp threads. The width of the second warp region can also be zero in sections, that is, if the additional warp thread or threads in one or more sections are immersed in the warp direction in the first warp region.
Gemäß einer diesbezüglich vorteilhaften Weiterentwicklung sind mehrere Fadengruppen, die jeweils mehrere nebeneinander verlaufende Zusatzkettfäden umfassen, in einem solchen zweiten Kettbereich vorgesehen. Diese mehreren Fadengruppen überlagern sich bevorzugt zumindest abschnittsweise in Kettrichtung. Auf diese Weise sind insbesondere unterschiedliche Krafteinleitungszonen im zweiten Kettbereich realisierbar.According to a further development which is advantageous in this regard, a plurality of thread groups, each comprising a plurality of additional warp threads running next to one another, are provided in such a second warp region. These multiple thread groups preferably overlap at least in sections in the warp direction. In this way, different force introduction zones in the second warp area can be realized in particular.
Gemäß vorteilhaften Ausführungsformen ist an beiden längsseitigen Gewebekanten ein derartiger zweiter Kettbereich vorhanden.According to advantageous embodiments, such a second warp region is present on both longitudinal fabric edges.
Es hat sich herstellungstechnisch als besonders bevorzugt erwiesen, dass die Zusatzkettfäden innerhalb einer Fadengruppe, vorzugsweise innerhalb jeder der Fadengruppen, mit jeweils in Schussrichtung gleichem Abstand zueinander verlaufen. Eine solche Ausgestaltung lässt sich besonders einfach mittels einer Modifikation der sog. Open-Reed-Weave-Technologie (Weben mit offenem Webblatt) erreichen, die weiter unten genauer erläutert wird. Demgegenüber sind die Abstände der Fadengruppen zueinander bevorzugt variabel in Schussrichtung und/oder in Kettrichtung einstellbar.In terms of production technology, it has proven to be particularly preferred that the additional warp threads run within a thread group, preferably within each of the thread groups, with the same distance from one another in each case in the weft direction. Such an embodiment can be achieved particularly easily by means of a modification of the so-called open reed weave technology (weaving with an open reed), which is explained in more detail below. In contrast, the distances of the thread groups to one another are preferably variably adjustable in the weft direction and / or in the warp direction.
Gemäß einer vorteilhaften Alternative weist das erfindungsgemäße Gewebe in Schussrichtung variable Abstände zwischen Zusatzkettfäden - auch innerhalb einer Fadengruppe - auf, wobei diese Abschnitte variabler Abstände bei Verlauf der Zusatzkettfäden in gestreckter Kettrichtung (0°-Richtung) und/oder in von der gestreckten Kettrichtung (K) abweichend verlaufender Richtung und/oder bei deren nicht durchgehendem Verlauf vorhanden sein können.According to an advantageous alternative, the fabric according to the invention has variable distances between additional warp threads in the weft direction - also within a thread group - these sections of variable distances when the additional warp threads run in the stretched warp direction (0 ° direction) and / or in the stretched warp direction (K ) deviating Direction and / or if they are not continuous, may be present.
Besonders bevorzugt ist zu beiden Seiten des ersten Kettbereichs mindestens ein besagter zweiter Kettbereich mit mindestens einer besagten Fadengruppe mit jeweils mehreren Zusatzkettfäden angeordnet. Somit lassen sich nahezu beliebige formgerechte Gewebekonturen realisieren. Die Fäden der beiden zweiten Kettbereiche werden entsprechend der gewünschten Kontur durch den Schussfaden angebunden.Particularly preferably, at least one said second warp region with at least one said thread group, each with a plurality of additional warp threads, is arranged on both sides of the first warp region. This means that almost any form-fitting tissue contours can be realized. The threads of the two second warp areas are bound by the weft thread in accordance with the desired contour.
Das erfindungsgemäße Gewebe erhält insbesondere dann eine feste Struktur, wenn zumindest ein und vorzugsweise mehrere Zusatzkettfäden mindestens einer Fadengruppe mindestens einen und vorzugsweise mehrere Kettfäden des ersten Kettbereichs schneiden. In diesen Überlappungsbereichen ist somit eine hohe Kettdichte gegeben, die zur höheren Gewebebelastbarkeit beiträgt.The fabric according to the invention is given a firm structure in particular if at least one and preferably several additional warp threads of at least one thread group cut at least one and preferably several warp threads of the first warp region. In these overlap areas there is therefore a high warp density, which contributes to the higher fabric resilience.
Die seitliche Begrenzung des Gewebes kann verschiedenartig realisiert werden. Gemäß einer vorteilhaften Variante weisen die Schussfäden eine konstante Länge auf, wobei die überstehenden Fäden nachträglich abgeschnitten werden. Alternativ wird die Spulenschützentechnik eingesetzt, bei der der Schussfaden an der Gewebekante umgelenkt wird. Gemäß einer weiteren Alternative findet die Greiferwebtechnik Einsatz, wobei der Schussfaden unter Realisierung eines variablen Greiferhubs eine definierte Länge aufweist. Bei den beiden letztgenannten Verfahren kann jeweils ein konturiertes Gewebe mit fester Kante ohne Materialverlust erzeugt werden. Es sind aber auch alle anderen Schusseintragsverfahren anwendbar, bei denen der Hub variabel gestaltbar ist.The lateral limitation of the fabric can be realized in different ways. According to an advantageous variant, the weft threads have a constant length, the protruding threads being cut off subsequently. Alternatively, bobbin protection technology is used, in which the weft thread is deflected at the fabric edge. According to a further alternative, the rapier weaving technique is used, the weft thread having a defined length while realizing a variable rapier stroke. With the latter two methods, a contoured fabric with a firm edge can be produced without loss of material. However, all other weft insertion methods in which the stroke can be designed variably can also be used.
Gemäß einer weiteren Variante der Erfindung (nachfolgend als Variante 2 bezeichnet) sind zumindest einige der das Gewebe begrenzenden Zusatzkettfäden in Webrichtung unterbrochen und anschließend, d.h. nach mehreren definierten Schusszyklen, wieder im Gewebe aufgenommen. Auch auf diese Weise lässt sich eine seitliche Konturierung (Breitenkontur) des Gewebes erreichen.According to a further variant of the invention (hereinafter referred to as variant 2), at least some of the additional warp threads delimiting the fabric are interrupted in the weaving direction and then, ie after several defined shot cycles, resumed in the tissue. In this way too, lateral contouring (width contour) of the fabric can be achieved.
Eine weitere Variante der Erfindung (nachfolgend auch als Variante 3 bezeichnet) zeichnet sich dadurch aus, dass ein oder mehrere Zusatzkettfäden entsprechend der gewünschten Breitenkontur in das Gewebe integriert sind. Bei einer entsprechenden Ausführung ist zumindest ein Zusatzkettfaden als Klebefaden ausgeführt, der in das Gewebe eingewoben wird und eine Klebeverbindung mit den Kett- und Schussfäden eingeht. Gemäß einer weiteren Alternative besteht der zur Breitenkonturierung vorgesehene mindestens eine Zusatzkettfaden aus thermoplastischem Material, welcher am Gewebe aufgeschmolzen ist. Bei den verschiedenen Ausführungsformen gemäß der Variante 3 wird das Gewebe entlang des besagten mindestens einen Zusatzkettfadens auf die Endkontur zugeschnitten.Another variant of the invention (also referred to below as variant 3) is characterized in that one or more additional warp threads are integrated into the fabric according to the desired width contour. In a corresponding embodiment, at least one additional warp thread is designed as an adhesive thread which is woven into the fabric and forms an adhesive connection with the warp and weft threads. According to a further alternative, the at least one additional warp thread provided for width contouring consists of thermoplastic material, which is melted onto the fabric. In the various embodiments according to
Hinsichtlich des erfindungsgemäßen Herstellungsverfahrens wird das Gewebe besonders bevorzugt unter Verwendung der Prinzipien des sog. Open-Reed-Weave produziert, welches beispielsweise in der
Bei einer bevorzugten Umsetzung des erfindungsgemäßen Verfahrens für eine erfindungsgemäße Vorrichtung, welche dann über eine entsprechend ausgestaltete Maschinensteuerung verfügt, wird diese bekannte Technologie weiterentwickelt. Hierbei wird die Kettfaden-Versatzeinrichtung derart ausgestaltet, dass - zur Produktion mindestens eines zweiten Kettbereichs (s.o.) - statt eines stets innerhalb des rechteckförmigen Gewebes platzierten Effektfadens nun zumindest ein Zusatzkettfaden abschnittsweise außerhalb dieses Rechtecks platziert wird und für eine außenseitige Konturierung des Gewebes - zumindest abschnittsweise - verwendet wird. Die Kettfaden-Versatzeinrichtung ist also in Schussrichtung über die Randbereiche des aus linearen Kett- und Schussfäden hergestellten Gewebes hinaus variabel entsprechend der gewünschten Endkontur des Gewebes hin und her changierbar. Eine größere Flexibilität wird erhalten, wenn mehrere Kettfaden-Versatzeinrichtungen, welche für die Einbringung von Zusatzkettfäden vorgesehen sind, hintereinander (d.h. versetzt in gestreckter Kettrichtung) zwischen den Fachbildeelementen und dem offenen Webblatt, welches in Kettrichtung vor und zurückschwenkt, angeordnet sind.In a preferred implementation of the method according to the invention for a device according to the invention, which then has a correspondingly configured machine control, this known technology developed further. Here, the warp thread offset device is designed in such a way that - for the production of at least one second warp region (see above) - instead of an effect thread always placed within the rectangular fabric, at least one additional warp thread is now placed in sections outside of this rectangle and for an outside contouring of the fabric - at least in sections - is used. The warp thread offset device can thus be varied back and forth in the weft direction beyond the edge regions of the fabric produced from linear warp and weft threads in accordance with the desired final contour of the fabric. Greater flexibility is obtained if a plurality of warp thread offset devices which are intended for the introduction of additional warp threads are arranged one behind the other (ie offset in the stretched warp direction) between the shed forming elements and the open reed which swings back and forth in the warp direction.
Es ist hierbei bevorzugt, nicht nur einen Zusatzkettfaden zu verwenden, sondern eine Fadengruppe mit mehreren nebeneinander verlaufenden Zusatzkettfäden, da auf diese Weise größere Winkel bzw. Breiten außerhalb des besagten Geweberechtecks erzielbar sind. Hierzu ist in dem Webblatt eine entsprechende Vielzahl von nach oben offenen Rietlücken vorgesehen. Eine sehr große Flexibilität ergibt sich, wenn alle Rietlücken des Webblatts nach oben offen ausgestaltet sind.It is preferred not only to use an additional warp thread, but a thread group with a plurality of additional warp threads running next to one another, since in this way larger angles or widths can be achieved outside of the said fabric rectangle. For this purpose, a corresponding plurality of reed gaps open at the top is provided in the reed. There is a great deal of flexibility if all reed gaps in the reed are open at the top.
Auf diese Weise kann zusätzlich zu dem ersten Kettbereich konstanter Breite an jeweils einer Längsseite des Gewebes ein zweiter Kettbereich erzeugt werden, der eine von der gestreckten Kettrichtung abweichende Kontur aufweist. Wenn mehrere Fadengruppen mit jeweils mehreren nebeneinander verlaufenden Zusatzkettfäden in einem zweiten Kettbereich vorgesehen sein sollen, werden vorzugsweise - wie oben angedeutet - mehrere in Gewebelängs- bzw. Kettrichtung hintereinander angeordnete Kettfaden-Versatzeinrichtungen eingesetzt. Hierdurch lässt sich zudem erreichen, dass sich die mehreren Fadengruppen abschnittsweise überlagern. Es ist auch anzumerken, dass die mittels der Kettfaden-Versatzeinrichtung(en) verschiebbaren Zusatzkettfäden sowohl in Kettrichtung als auch diagonal bzw. von der Kettrichtung abweichend angeordnet werden können.In this way, in addition to the first warp region of constant width, a second warp region can be produced on each longitudinal side of the fabric, which has a contour that deviates from the stretched warp direction. If a plurality of thread groups, each with a plurality of additional warp threads running side by side, are to be provided in a second warp region, a plurality of warp thread offset devices arranged one behind the other in the longitudinal or warp direction of the warp are preferably used, as indicated above. In this way it can also be achieved that the several thread groups overlap in sections. It should also be noted that the additional warp threads which can be displaced by means of the warp thread offset device (s) can be arranged both in the warp direction and also diagonally or deviating from the warp direction.
Durch die Ausgestaltung des offenen Webblattes kann zudem ohne Weiteres realisiert werden, dass zumindest ein Zusatzkettfaden eines zweiten Kettbereichs mindestens einen Kettfaden des ersten Kettbereichs schneidet.The configuration of the open reed also makes it easy to implement that at least one additional warp thread of a second warp region cuts at least one warp thread of the first warp region.
Zur Herstellung eines Gewebes gemäß der Variante 2 wird vorzugsweise die Gewebekante durch positionierbare Kettfäden realisiert, welche gezielt aus dem Webprozess ausgeschaltet werden können. Die diesbezügliche Ausführungsform des erfindungsgemäßen Verfahrens sieht vorzugsweise folgenden Schrittablauf vor:
- 1) Ausschalten des Kettfadens aus dem Webprozess, insbesondere durch Ab- bzw. Durchschneiden,
- 2) Vorhalten des ausgeschalteten Kettfadens,
- 3) Erneutes Einbringen des Kettfadens in den Webprozess.
- 1) switching off the warp thread from the weaving process, in particular by cutting off or cutting through,
- 2) keeping the warp thread switched off,
- 3) Reintroducing the warp thread into the weaving process.
Auf diese Weise sind homogene formgerechte Gewebe realisierbar. Es kommt hierbei zu keiner Anhäufung bzw. Verdichtung von Kettfäden.In this way, homogeneous, form-fitting fabrics can be realized. There is no accumulation or compaction of warp threads.
Auch kann ein Gewebe gemäß der Variante 3 durch eine Weiterentwicklung des Open-Reed-Weaves realisiert werden, indem ein oder mehrere Zusatzkettfäden entsprechend der gewünschten endgültigen Breitenkontur in das Gewebe integriert werden. Diese Zusatzfäden bestehen gemäß der Variante 3 aus thermoplastischem Material, welches aufgeschmolzen wird, oder sind z.B. als Klebefaden ausgeführt. Im Anschluss erfolgt dann der Zuschnitt entlang der (äußersten) Zusatzkettfäden, um die gewünschte Form des Gewebes zu erhalten. Dieser Zusatzkettfaden kann auch als Markerfaden (zum Beispiel farbig oder metallisch) ausgeführt sein und zur Steuerung des Zuschnittes genutzt werden.A fabric according to
Weitere Ausführungsformen der Erfindung ergeben sich aus den Merkmalen der Unteransprüche.Further embodiments of the invention result from the features of the subclaims.
Nachfolgend wird die Erfindung anhand von Figuren näher erläutert. Es zeigen:
-
Figur 1 - einen Ausschnitt eines erfindungsgemäßen Gewebes in der Draufsicht mit einem ersten und zwei zweiten Kettbereichen mit jeweils einer Fadengruppe;
-
Figur 2 - ein Gewebe ähnlich wie in
, allerdings mit zwei Fadengruppen in einem zweiten Kettbereich;Figur 1 -
Figur 3 - ein Gewebe ähnlich wie in
, allerdings mit Schussumlenkung an der Gewebekante;Figur 1 -
Figur 4 - ein Gewebe ähnlich wie in
, allerdings mit Schusseintrag entsprechend der Gewebebreite;Figur 1 -
Figur 5 - einen Ausschnitt eines erfindungsgemäßen Gewebes mit unterbrochenen Kettfäden als Zusatzkettfäden, und
-
Figur 6 - einen Ausschnitt eines erfindungsgemäßen Gewebes mit Klebefäden als Zusatzkettfäden.
- Figure 1
- a detail of a fabric according to the invention in plan view with a first and two second warp areas, each with a thread group;
- Figure 2
- a fabric similar to that in
Figure 1 , but with two thread groups in a second warp area; - Figure 3
- a fabric similar to that in
Figure 1 , but with weft deflection at the edge of the fabric; - Figure 4
- a fabric similar to that in
Figure 1 , but with weft insertion according to the fabric width; - Figure 5
- a section of a fabric according to the invention with interrupted warp threads as additional warp threads, and
- Figure 6
- a section of a fabric according to the invention with adhesive threads as additional warp threads.
Die
Die Zusatzkettfäden 5, 6 weisen einen von der gestreckten Kettrichtung K (0°-Richtung) abweichenden Verlauf auf. In dem dargestellten Ausschnitt des Gewebes 1 biegen die Zusatzkettfäden 5, 6 nach einem jeweils in Kettrichtung K verlaufenden Abschnitt 20 schräg nach innen (Abschnitt 21), laufen dort wiederum linear in gestreckter Kettrichtung K (Abschnitt 22), bis sie jeweils nach schräg außen abbiegen (Abschnitt 23), um anschließend mit der ursprünglichen Richtung des Abschnitts 20 zu fluchten (Abschnitt 24). In den beiden Abschnitten 21, 23 verlaufen die Zusatzkettfäden 5, 6 abweichend von der gestreckten Kettrichtung K.The
Wie der
Vorliegend wird demnach der erste Kettbereich 4 dadurch definiert, dass in ihm nur linear und parallel verlaufende Kettfäden 2 vorhanden sind, während in den zweiten Kettbereichen 10, 11 nur Zusatzkettfäden 5, 6 laufen. Die Zusatzkettfäden 5, 6 laufen hierbei nicht ausschließlich in den zweiten Kettbereichen 10, 11, sondern auch abschnittsweise im ersten Kettbereich 4.In the present case, the
Die Verläufe, die Anzahl, die Abstände, die Materialien etc. der Zusatzkettfäden 5, 6 in der
Gemäß dem Ausführungsbeispiel der
Es ist offensichtlich, dass durch eine Mehrzahl von Fadengruppen im zweiten Kettbereich 10 und auch durch ein zwischenzeitliches Hineinlaufen in den ersten Kettbereich 4 eine Vielzahl von Gestaltungsmöglichkeiten zur Gewebeherstellung realisierbar ist. Werden Hochleistungsfasern für die Zusatzkettfäden 5, 6, 7 - und vorzugsweise auch für die Kettfäden 2 und Schussfäden 3 - verwendet, können formgerechte Halbzeuge präzise und ohne Verschnitt hergestellt werden.It is obvious that a plurality of thread groups in the
Bei den Geweben 1 der
Bei dem Gewebe 1 gemäß der
Alternativ wird die ebenfalls bekannte Greiferwebtechnik verwendet, bei der zur Kanten- bzw. Konturherstellung ein variabler Greiferhub eingestellt wird. Hier werden die Schussfäden 3 mit definierter, variabler Länge eingetragen, s.
In den
In der
In der
Die in den Figuren gezeigten Möglichkeiten zur Einbringung von Zusatzkettfäden 5, 6, 7, 8, 9 sind ohne Weiteres untereinander kombinierbar.The possibilities for introducing
Die Einbringung der Zusatzkettfäden 5, 6, 7, 8, 9 erfolgt besonders bevorzugt mittels einer Weiterentwicklung des bekannten Open-Reed-Weave. Bei den Ausführungsbeispielen gemäß den
Demgemäß weist der erste Kettbereich 4 eine über die Gewebelänge konstante Breite auf, während die zweiten Kettbereiche 10, 11 rechts und/oder links neben dem ersten Kettbereich 4 variabel sind.Accordingly, the
Bei den Ausführungsbeispielen der
Gemäß dem Ausführungsbeispiel der
Gemäß einer Variantenkombination können zusätzlich einzelne Kettfäden (Ausführungsbeispiele gemäß der
Derartige Krafteinleitungszonen sind beispielsweise auch durch Zusatzkettfäden realisierbar, welche die nicht-linearen, von der gestreckten Kettrichtung abweichenden Konturen (mit)bestimmen oder über das aus linearen Kett- und Schussfäden bestehende Gewebe beispielsweise von einer Gewebelängsseite zur anderen und ggf. wieder - zumindest teilweise - zurück laufen. Im letzten Fall sind erfindungsgemäß weitere Zusatzkettfäden für die nichtlineare Endkontur des Gewebes vorhanden. Zwei sich - ggf. wiederholt in gestreckter Kettrichtung K - kreuzende Zusatzkettfäden oder Fadengruppen aus mehreren Zusatzkettfäden sind ebenfalls realisierbar, wobei diese Ausgestaltungen auch lediglich beispielhaft genannt sein sollen. Allen erfindungsgemäßen Geweben ist gemeinsam, dass sie nicht-lineare, von der gestreckten Kettrichtung K abweichende Konturen aufweisen, die durch mindestens einen Zusatzkettfaden erreicht werden.Such force introduction zones can also be realized, for example, by additional warp threads, which (also) determine the non-linear contours that deviate from the stretched warp direction or via the fabric consisting of linear warp and weft threads, for example from one fabric longitudinal side to the other and possibly again - at least partially - run back. In the latter case, additional additional warp threads for the non-linear final contour of the fabric are present according to the invention. Two additional warp threads or thread groups consisting of several additional warp threads, which may cross each other repeatedly in the stretched warp direction K, can also be implemented, these configurations also being only mentioned as examples. It is common to all fabrics according to the invention that they have non-linear contours which deviate from the stretched warp direction K and which are achieved by at least one additional warp thread.
Mit Hilfe einer variabel verstellbaren Schusszuführ- und Schneideinrichtung können weiterhin variable Schusslängen realisiert werden, wodurch eine auf die lokale Gewebebreite angepasste Schusslänge ermöglicht wird. Damit entfällt ein nachträglicher Zuschnitt und Schussabfall wird vermieden.With the help of a variably adjustable weft feeding and cutting device, variable weft lengths can also be realized, which enables a weft length adapted to the local fabric width. This eliminates the need for subsequent cutting and shot waste is avoided.
Insgesamt wird mit der Erfindung ein automatisiert herstellbares formgerechtes Gewebe unter bestmöglicher Ausnutzung des einzusetzenden Fasermaterials zur Herstellung endkonturnaher Gewebe mit anforderungsgerecht angeordnetem Verstärkungsmaterial realisiert. Das gesamte System ist hochvariabel und ermöglicht eine absolute Flexibilität hinsichtlich der erzielbaren Konturen und der Anordnung des Verstärkungsmaterials.Overall, the invention realizes an automatically producible form-fitting fabric with the best possible use of the fiber material to be used for the production of near-net-shape tissue with reinforcing material arranged according to requirements. The entire system is highly variable and allows absolute flexibility with regard to the contours that can be achieved and the arrangement of the reinforcement material.
Die Erfindung wurde anhand einiger Ausführungsbeispiele beschrieben. Sie ist allerdings keinesfalls auf diese Ausführungsbeispiele beschränkt. Abwandlungen und Kombinationen innerhalb der Ansprüche sind ohne Weiteres möglich.The invention has been described using a few exemplary embodiments. However, it is in no way limited to these exemplary embodiments. Modifications and combinations within the claims are easily possible.
Claims (15)
- A weave (1) having a plurality of warp threads (2) running linearly and in parallel, and a plurality of weft threads (3) running linearly and in parallel, characterized in that the weave (1) comprises an outer contour deviating from the extended warp direction (K) in one or more segments (21, 23; 25, 26; 27; 28; 29; 30) along the weave (1), formed by at least one additional warp thread (5; 6; 7; 8; 9) deviating from the extended warp direction (K) and/or running discontinuously, wherein the additional warp thread or threads (5; 6; 7; 8; 9), respectively, are made of high-performance material, for example in the form of glass fibers, ceramic fibers, carbon fibers, steel fibers or wire, or of a thermoplastic material.
- The weave according to claim 1, characterized in that the warp threads (2) running linearly and in parallel and the weft threads (3) running linearly and in parallel form a first warp region (4) having a constant width over the length of the weave, and that a second warp region (10, 11) defined by at least one of said additional warp threads (5; 6; 7) is present at least on one of the two long sides of the first warp region (4).
- The weave according to claim 2, characterized in that at least one thread group (12, 13, 14) comprising a plurality of additional warp threads (5; 6; 7) running adjacent to each other defines said second warp region (10, 11).
- The weave according to claim 2 or 3, characterized in that a plurality of thread groups (12, 14) comprising a plurality of additional warp threads running adjacent to each other are provided in a second warp region (10), wherein the plurality of thread groups (12, 14) overlap each other in the warp direction (K) in one or more segments (25, 26) along the weave (1).
- The weave according to any one of the claims 2 through 4, characterized in that the additional warp threads (5; 6; 7) within at least one thread group (12, 13, 14), preferably within all thread groups (12, 13, 14), run spaced apart from each other at equal intervals in the weft direction (S), and/or that additional warp threads (5, 6, 7) comprise variable spacing along the entire joint run thereof.
- The weave according to any one of the claims 2 through 5, characterized in that at least one additional warp thread (5; 6; 7) of a second warp region (10, 11) intersects at least one warp thread (2) of the first warp region (4).
- The weave according to any one of the preceding claims, characterized in that said weft threads (3) running linearly and in parallel bound the at least one second warp region (10, 11), wherein the weft threads (3) are deflected at the edge (18) of the weave (bobbin protection technique) or have a defined length corresponding to the local width of the weave (1) (gripper technique, weft insertion by means of an air/water nozzle or projectile).
- The weave according to any one of the preceding claims, characterized in that at least some of the additional warp threads (8) bounding the long side of the weave (1) are interrupted and then resumed again in the weaving direction.
- The weave according to any one of the preceding claims, characterized in that at least one additional warp thread (9) is embodied as an adhesive thread or a marker thread, or is bound according to the desired contour or is made of a thermoplastic material melted onto the weave (1), and that the weave (1) is cut to size along said at least one additional warp thread.
- A method for producing a weave, particularly a weave according to any one of the preceding claims, comprising the step that a plurality of warp threads (2) running linearly and in parallel and a plurality of weft threads (3) running linearly and in parallel are woven, wherein an outer contour of the weave (1) deviating from the extended warp direction (K) is formed in the same weaving process in one or more segments (21, 23; 25, 26; 27; 28; 29; 30) along the weave (1) by introducing at least one additional warp thread (5; 6; 7; 8; 9) deviating from the extended warp direction (K) and/or not running continuously, wherein for the additional warp threads (5; 6; 7; 8; 9) high-performance fibers, for example glass fibers, ceramic fibers, carbon fibers, steel fibers or wire, are used or a thermoplastic material.
- The method according to method claim 10, characterized in that the warp threads (2) running linearly and in parallel and the weft threads (3) running linearly and in parallel are woven into a first warp region (4) having a constant width, where a second warp region (10, 11) formed of at least one of said additional warp threads (5; 6; 7; 8), preferably of a fiber group (12, 13, 14) made of a plurality of additional warp threads (5; 6; 7) running adjacent to each other, is woven at least at one of the two long sides of the first warp region (4) in one or more segments (21, 23; 25, 26; 27; 28; 29), wherein preferably- a plurality of thread groups (12, 13, 14) are woven in the second warp region (10, 11), wherein the plurality of thread groups (12, 13, 14) overlap each other in the warp direction (K) in one or more segments (25, 26), and/or- the additional warp threads (5; 6; 7; 8) are introduced within at least one thread group (12, 13, 14), preferably within all thread groups (12, 13, 14), spaced apart evenly in the weft direction (S) in each case, and/or- additional warp threads (5, 6, 7; 9) are introduced in one or more segments (21, 23; 25, 26; 27; 28; 30) spaced variably apart from each other in the weft direction (S).
- The method according to any one or more of the preceding method claims, characterized in that all warp threads (3) are introduced at a constantly identical length, wherein the protruding weft threads (3) are subsequently cut off, or that said weft threads (3) running linearly and in parallel are introduced at an demand-oriented length, wherein the weft threads are deflected at the edge (18) of the weave (bobbin protection technique) or have a defined length (gripper technique, weft insertion by means of an air/water nozzle or projectile).
- The method according to any one or more of the preceding method claims, characterized in that at least some of the additional warp threads (8) bounding the long side of the weave (1) are interrupted and then resumed again in the weaving direction.
- The method according to any one or more of the preceding method claims, characterized in that at least one additional warp thread (9):a) is embodied as an adhesive thread, orb) is embodied as a marker thread, orc) is made of a thermoplastic material, which is melted onto the warp and weft threads (2, 3) running linearly,wherein the weave (1) is cut to size along said additional warp threads (9) after step a), b), or c).
- A device for producing a weave according to any one of the claims 1 through 9, having a device for introducing warp threads in the warp direction and a device for introducing weft threads in the weft direction and a weaving device for weaving the warp and weft threads into a first, rectangular warp region, characterized by at least one warp thread offset device for oscillating in the weft direction beyond the first warp region for introducing into the weave the additional warp threads made of a high-performance material or of a thermoplastic material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013108372.2A DE102013108372B4 (en) | 2013-08-02 | 2013-08-02 | Fabrics and process for their manufacture |
Publications (2)
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EP2832906A1 EP2832906A1 (en) | 2015-02-04 |
EP2832906B1 true EP2832906B1 (en) | 2020-05-27 |
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Family Applications (1)
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EP14179661.5A Active EP2832906B1 (en) | 2013-08-02 | 2014-08-04 | Fabric, method and device for its manufacture |
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EP (1) | EP2832906B1 (en) |
DE (1) | DE102013108372B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3121317B1 (en) | 2015-07-23 | 2021-01-06 | STÄUBLI BAYREUTH GmbH | Method for weaving a fabric, near-net shape fabric woven via such a method and weaving loom for implementing this method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06272134A (en) * | 1993-03-18 | 1994-09-27 | Nippon Muki Co Ltd | Production of woven fabric of high-silicate glass yarn and woven fabric of e glass yarn used for the same production |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE118429C (en) * | ||||
DE846829C (en) * | 1943-11-27 | 1952-08-18 | Jaime Picanol | Device for making false edges in fabrics |
US3152620A (en) * | 1962-09-26 | 1964-10-13 | John D Riordan | Woven narrow web with ornamental selvage |
FR1425411A (en) * | 1964-12-04 | 1966-01-24 | Honore Vinson | Improvement in tapes woven by a monofilament |
CH671784A5 (en) * | 1987-04-03 | 1989-09-29 | Textilma Ag | |
JP3033017U (en) * | 1996-06-28 | 1997-01-17 | 有限会社笠島製紐 | Woven tape with double mountain picot |
ITFI980083A1 (en) * | 1998-04-07 | 1999-10-07 | Leonardo Lenzi | METHOD AND EQUIPMENT FOR THE MANUFACTURE OF TEXTILE OBJECTS |
DE102006013886B3 (en) * | 2006-03-25 | 2007-11-29 | Halbach Seidenbänder Vertrieb GmbH | Process to weave high quality ribbon for application to e.g. floral bouquets using figuring shoot process and assembly |
DE102010007048A1 (en) * | 2010-02-06 | 2011-08-11 | Lindauer DORNIER Gesellschaft mit beschränkter Haftung, 88131 | Method and weaving machine for producing fabrics with additional weft effects |
EP2802445A4 (en) * | 2012-01-13 | 2015-06-03 | Magna Int Inc | Woven fabric preforms and process for making the same |
DE102012200835B3 (en) * | 2012-01-20 | 2013-03-14 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Weaving machine with a device for forming additional shot effects |
US8839824B2 (en) * | 2012-01-24 | 2014-09-23 | Nike, Inc. | Multiple layer weaving |
-
2013
- 2013-08-02 DE DE102013108372.2A patent/DE102013108372B4/en not_active Expired - Fee Related
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2014
- 2014-08-04 EP EP14179661.5A patent/EP2832906B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06272134A (en) * | 1993-03-18 | 1994-09-27 | Nippon Muki Co Ltd | Production of woven fabric of high-silicate glass yarn and woven fabric of e glass yarn used for the same production |
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EP2832906A1 (en) | 2015-02-04 |
DE102013108372B4 (en) | 2020-03-12 |
DE102013108372A1 (en) | 2015-02-05 |
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