EP1795635A1 - Heald for warp yarns having a band shape - Google Patents

Abstract

A heddle main structure (3) extending in a longitudinal direction (4) has an end eyelet (5,6) for positioning the main structure on a heddle support rail (2). The width (B) of a thread eyelet (7) provided on a heddle structure (3), is measured in a direction transverse to the longitudinal direction and parallel to the heddle support rail. The width of the thread eyelet exceeds the height (H) measured in longitudinal direction.

Description

The invention relates to a heddle, which is adapted for processing warp threads, which are formed in the manner of ribbons.

For the production of fabrics are looms, which have at least one, but usually many so-called heald shanks for shedding. Each weave is formed by a substantially rectangular frame made vertically arranged side supports and an upper and a lower spar, the so-called shaft rod exists. Litzentragschienen are held on the shaft rods, which are usually formed by elongated steel rails with a rectangular cross-section. The steel rails are used to hold healds. Each heald has end loops for threading onto the top and bottom steel rails. Between the end eyelets of the heddle body extends. Approximately in the middle a thread eye is provided, through which the warp thread leads. If the shaft rod is moved upwards or downwards, all warp threads leading through the thread eyes of the strands are guided out of the warp thread bundle upwards or downwards, so that a shed is formed.

The FR 394 156 discloses such a heddle made of flat strip steel. The flat sides of the steel strip are oriented in warp direction. To produce a thread eye, the heald is compressed and punched in the area of the same. The resulting thread eye has a height measured in the vertical direction which is greater than the width measured in the horizontal direction. The thread eye is oriented in warp direction.

Also the DE-PS 22996 discloses a heddle with warp-oriented yarn eye. The heald consists of two layers of thin metal strips that lie parallel to each other. In the area of the thread eye the metal strips are arched away from each other. The heddle is wound around its longitudinal direction, so that the thread eye is oriented transversely to the end eyelets.

The presented healds are suitable for processing substantially round threads. However, there is an increasing demand for the processing of ribbon-shaped fiber arrangements. Frequently, for example, polyester, aramid or carbon fiber band-shaped thread arrangements are to be processed, e.g. for producing fabrics for reinforcing highly stressed composite structures. Frequently the demand arises that the band-shaped fiber bundle retains its band-shaped structure in the weaving process, and e.g. aligned parallel to the tissue plane.

On this basis, it is an object of the invention to provide a strand which is suitable for weaving ribbon-like warp threads.

• Gemäß Anspruch 1 weist die erfindungsgemäße Weblitze einen Litzenkörper mit einem Fadenauge auf, das in Kettfadenrichtung gesehen breiter als hoch ist. Die Form des Fadenauges ist insoweit der Form des bandförmigen oder bandartigen Kettfadens oder einer entsprechenden Kettfadengruppe angenähert, die hier als Kettfaden angesehen wird. Die Breite des Fadenauges ist wenigstens einige Zehntelmillimeter größer als die Breite des bandartigen Kettfadens für den die betreffende Weblitze vorgesehen ist. Dadurch kann ein flacher bandartiger Kettfaden ungehindert durch das Fadenauge laufen, wobei er in dem Fadenauge mit geringem Vertikalspiel sicher geführt ist.

This object is achieved with the heddle according to claim 1 and with the heddle according to claim 2:

• According to claim 1, the heddle according to the invention on a strand body with a thread eye, seen in the warp direction is wider than high. The shape of the thread eye is insofar approximated to the shape of the band-shaped or ribbon-like warp thread or a corresponding warp thread group, which is considered here as a warp thread. The width of the thread eye is at least a few tenths of a millimeter larger than the width of the ribbon-like warp thread for which the heald in question is provided. As a result, a flat ribbon-like warp thread can pass unhindered through the thread eye, being securely guided in the thread eye with little vertical clearance.

Regardless of this measure, it is advantageous according to claim 2, the thread eye at its upper and lower Edge to be provided with a thread guide surface, the thread inlet side and / or yarn outlet side is rounded, wherein the extending in the warp direction length of this yarn guide is greater than the thickness of the strand body to be measured in the same direction. The heddle body can be made relatively thin and, for example, consist of sufficiently strong steel. The risk that form sharp edges on the thread eye, which can damage sensitive threads is banned by the inventively provided Fadenleitfläche. The thickness of the heald can thus be reduced to a minimum, which reduces the weight of the strands and thus the material costs and on the other hand increases the possible achievable working speed.

Preferably, the heald is rotated at least in the region of the thread eye transversely to the warp thread, i. the flat sides of the heald lie in a plane which also contains the two heddle rails or encloses with them an at least very acute angle near 0 °. This ensures that the opening direction of the thread eye substantially coincides with the running direction of the warp thread. As a result, the minimum thread eye width is made possible for the required opening width of the thread eye.

For the formation of a shed, for example, a first heald is moved down to the lower position and a second heald up to the upper position. Both heddles have healds according to the invention, through the thread eye of which warp threads run. After the movement of the first heald to the lower position and the second heald to the upper position forms, for example, in each case a warp thread of the first heald with a warp thread of the second heald a so-called shed. The warp thread of the first heald passes through a thread eye of a strand in the first heald in the lower region, wherein the warp thread of the second heald passes through a thread eye a strand of the second heald in the upper region. This is how a shed is formed. After the weft insertion into this shed the two shafts change their position. The first weaving shaft goes up, at the same time the second weaving shaft goes down. The heddles also change the positions of the heddles and thus the warp threads or warp thread bundles passing through the thread eyes of the heddles. In this change in position of the warp threads of the warp thread of the second weaving sheath sweeps past the outer edge of the adjacent heald of the first heald shaft. Conversely, the warp thread passing through the thread eye of the first heald passes the outer edge of the adjacent heald of the second web shaft.

Because the thread eye of a strand according to the invention is rotated transversely to the warp thread, the area between the outer edge of the strand and the thread eye can be made very small. This provides a warp thread of an adjacent strand of an adjacent heald shaft when changing position enough space to pass freely on the edge of the heald of the adjacent heald shaft over. Thus, the risk of injury to warp threads when changing position is greatly reduced. In addition, the formation of close-meshed tissues is possible. For the same purpose, the formation of close-meshed fabrics, may serve a slight inclination of the strand body in the region of the thread eye, whereby the opening direction the thread eye is inclined at an acute angle of a few degrees against the plane mentioned in claim 3.

Preferably, the heddle body is made of a band-shaped material, e.g. a steel band. At least on his thread eye he can be oriented transversely to the warp. The twist between the thread eye and the end eyelets is preferably 90 °. Thus, the above-described conditions and advantages are achieved.

The Endöse can be formed by a separate, connected to the heald body element. Preferably, however, it is an integral part of the strand body, i. It is made of the same material as this one and goes seamlessly and seamlessly into it. The heald can thereby be produced as a simple punched body. The end eyelet may have any known shape such as the so-called O-shape, C-shape or J-shape or any future developed form.

It is also possible to make the heald without twisting from a flat material, wherein the end eyelets are formed by projections which are attached to the heald body and protrude over the flat side. The projections can be formed for example by tongues, which are cut free from the heald body and bent out laterally. The projections may also be formed by subsequently attached to the flat side of the strand body elements. Such elements may be, for example, by laser welding or riveted metal tabs, wherein the weld can be made longitudinally or transversely to the longitudinal direction of the strand body. The version with longitudinally oriented weld leads to a particularly high stability of the end eyelet thus formed.

Particular attention is directed to the invention in a preferred embodiment on the formation of Fadenleitflächen, which may be formed for example by tabs that are bent out of the thread eye. In a preferred embodiment, the released tabs are bent out of the thread eye by at least 110 °. This results in generously dimensioned yarn guide surfaces, which can be used to weave brittle, break-sensitive threads.

In particular, for processing strongly adhering or abrasive threads, it is advantageous to form the Fadenleitflächen on separate elements which are connected to the strand body. They thus form the upper and / or the lower edge of the thread eye. The separate elements may be made of hardened steel, carbide, plastic or ceramic. The elements can be connected to the strand body by gluing, soldering or welding. The use of cemented carbide or ceramic allows interweaving particularly aggressive tapes, such as aramid fibers. The additional elements may also be provided with portions which protect at least a portion of the lateral flanks of the thread eye. This is achieved, for example, by having the elements in the form of a pin or disk end pin. Furthermore, it is advantageous to provide the heald in the region of the thread eye with a hard material support, for example titanium nitride or another hard material compound. This edition can, if to form the yarn guide carbide elements be limited to the carbide elements.

In a very cost-effective embodiment of the strand according to the invention, the elements clearly project beyond the upper and lower edges of the thread eye. The elements are in the form of smaller, arranged on the flat sides of the strand body platelets whose edges are well rounded. These plates are attached to the front and back flat side of the strand body and lay according to their positioning, the height of the thread eye in the longitudinal direction of the strand. With this measure, thread eyes of different height can be realized on uniformly punched strand bodies, so that the respective strands can be set up for different band-shaped warp threads.

• Figur 1 einen Webschaft mit einer Weblitze in ausschnittsweiser, schematisierter Perspektivdarstellung,
• Figur 2 die Weblitze nach Figur 1 in einer ausschnittsweisen, perspektivischen Ansicht ihres Fadenauges,
• Figur 3a und 3b eine abgewandelte Ausführungsform des Fadenauges einer Weblitze in Draufsicht nach dem Ausstanzen der Weblitze (Figur 3a) und im Vertikalschnitt nach Fertigstellung des Fadenauges (Figur 3b),
• Figur 4a und 4b eine abgewandelte Ausführungsform eines Fadenauges mit Elementen zur Festlegung von Fadenleitflächen in Draufsicht (Figur 4a) und im Vertikalschnitt (Figur 4b),
• Figur 5a und 5b eine weitere Ausführungsform eines Fadenauges mit Elementen zur Ausbildung von Fadenleitflächen in Draufsicht (Figur 5a) und im Vertikalschnitt (Figur 5b),
• Figur 6a und 6b ein Fadenauge mit formschlüssig unterstützten Elementen zur Festlegung von Fadenleitflächen in Draufsicht (Figur 6a) und im Vertikalschnitt (Figur 6b),
• Figur 7a und 7b eine abgewandelte Ausführungsform des Fadenauges einer Weblitze mit in Form von Plättchen ausgebildeten Elementen zur Ausbildung von Fadenleitflächen in Draufsicht (Figur 7a) und im Vertikalschnitt (Figur 7b),
• Figur 8a und 8b eine Ausführungsform einer Weblitze mit verbreiterter Fadenauflagefläche in Draufsicht (Figur 8a) und im Vertikalschnitt (Figur 8b),
• Figur 9a und 9b eine abgewandelte Ausführungsform der Weblitze mit runden Fadenleitelementen an ihrem Fadenauge in Draufsicht (Figur 9a) und im Vertikalschnitt (9b),
• Figur 10a ein Fadenleitelement für eine weblitze gemäß Figur 4a, 4b oder alternativ Figur 9a, 9b,
• Figur 10b ein Fadenleitelement für die Weblitze nach Figur 4a, 4b oder alternativ Figur 9a, 9b,
• Figur 11 die Weblitze nach Figur 1 mit einer abgewandelten Ausführungsform einer Endöse ohne Verdrehung des Litzenkörpers in perspektivischer Darstellung und
• Figur 12 eine abgewandelte Ausführungsform der Endöse in schematischer Darstellung.

Further details of advantageous embodiments of the invention are the subject of the drawing, the description or claims. In the drawings, embodiments of the invention are illustrated. Show it:

• FIG. 1 shows a heddle with a heddle in a fragmentary, schematic perspective view;
• FIG. 2 shows the heddle according to FIG. 1 in a fragmentary, perspective view of its thread eye;
• 3a and 3b show a modified embodiment of the thread eye of a heald in plan view after the punching of the heddle (FIG. 3a) and in vertical section after completion of the thread eye (FIG. 3b), FIG.
• 4a and 4b show a modified embodiment of a thread eye with elements for fixing thread guide surfaces in plan view (FIG. 4a) and in a vertical section (FIG. 4b), FIG.
• 5a and 5b show a further embodiment of a thread eye with elements for the formation of yarn guide surfaces in plan view (FIG. 5a) and in a vertical section (FIG. 5b), FIG.
• 6a and 6b, a thread eye with positively supported elements for fixing Fadenleitflächen in plan view (Figure 6a) and in vertical section (Figure 6b),
• 7a and 7b show a modified embodiment of the thread eye of a heddle with elements formed in the form of platelets for the formation of thread guide surfaces in plan view (FIG. 7a) and in a vertical section (FIG. 7b), FIG.
• 8a and 8b show an embodiment of a heald having a widened thread support surface in plan view (FIG. 8a) and in a vertical section (FIG. 8b), FIG.
• FIGS. 9a and 9b show a modified embodiment of the heddle with round thread guide elements on its thread eye in plan view (FIG. 9a) and in vertical section (9b),
• FIG. 10a shows a thread guiding element for a woven strand according to FIG. 4a, 4b or alternatively FIG. 9a, 9b, FIG.
• 10b shows a thread guide element for the heddle according to FIG. 4a, 4b or alternatively FIG. 9a, 9b, FIG.
• Figure 11 shows the heddle according to Figure 1 with a modified embodiment of an end eye without rotation of the heddle body in a perspective view and
• Figure 12 shows a modified embodiment of the end eye in a schematic representation.

FIG. 1 shows a heddle 1 for flat, band-shaped, not further illustrated warp threads. The heald 1 belongs to a group of the same or similarly formed healds, which are held on a heald, as it is used for shedding on a weaving machine. The heald 1 is mounted on two Litzentragschienen 2, 2 ', which are held at a distance parallel to each other at the upper and lower shaft rod of a heald. The heald 1 has a main body 3 consisting of strips of sheet steel, whose longitudinal direction 4 in FIG. 1 is oriented vertically and at a right angle to the heddle support rails 2, 2 '. It has at its ends end eyelets 5, 6, which can be formed in the simplest case by punched into the body 3 openings whose shape and size with a corresponding play addition to the cross section of the Litzentragschienen 2, 2 'corresponds. In a region lying between the end eyelets 5, 6, the main body 3 is provided with a thread eye 7, which serves to receive a warp thread. The thread eye 7 has, as can be seen in particular Figure 2, a substantially rectangular cross section, wherein its lateral edges 8, 9, which extend in the longitudinal direction 4, are shorter than its upper and its lower edge 10, 11, the transverse to the longitudinal direction 4 stand.

As can be seen from FIG. 1, the thread eye 7 is surrounded by a flat, essentially flat region 12, which lies at least approximately in or parallel to a plane defined by the heddle support rails 2, 2 '. For this purpose, the heddle 1 between the region 12 and the respective end eyelet 6, 7 respectively wound at points 13, 14 about 90 ° about the longitudinal direction 4.

As can be seen from FIGS. 1 and 2, the heddle body is formed integrally from a relatively thin flat material made of metal, for example steel as a pure stamped and bent part. The width of the heddle body 3 is at least at the area 12, but preferably greater overall than the illustrated in Figure 2 width B of the thread eye 7. On both sides of the thread eye 7 remain webs 15, 16th , whose width is preferably slightly larger than the thickness of the sheet material from which the heald 1 is formed. The height H of the thread eye 7 to be measured in the longitudinal direction 4 is significantly smaller than its width B. However, the thread eye 7 can also be shaped oval or otherwise, deviating from the rectangular shape illustrated in FIG. 2, but in each case its width B is greater than its height H. is.

The upper and lower edges 10, 11 are preferably formed by thread guide surfaces 17, 18, which, as shown in Figure 2, can connect directly to the flat sides of the region 12. However, the transitions may be rounded to save delicate warp threads 36. The warp threads 36 may each be formed by individual threads or strips (e.g., plastic tapes) or each of a plurality of interconnected or unjoined threads, a group of threads or a thread band 36.

• Für den Betrieb einer Webmaschine, zur Bildung eines Webfachs, werden mehrere Weblitzen 1 gemäß der Bauart nach Figur 1 auf die Litzentragschienen 2, 2' von mindestens zwei webschäften aufgereiht. Die Weblitzen 1 sind im einfachsten Fall untereinander vollkommen identisch ausgebildet. Sie sind pro Webschaft in einem Abstand, der im Wesentlichen der Kettfadenbreite 36 entspricht, gehalten. Durch die Fadenaugen 7 laufen diejenigen bandförmigen Kettfäden 36, die der Fachbildung zu unterwerfen sind. Zur Fachbildung werden die beiden Webschäfte, mit von den Litzentragschienen 2, 2' gehaltenen Weblitzen 1, in Längsrichtung 4 auf und ab bewegt. Dabei werden die durch die Fadenaugen 7 laufenden bandförmigen Kettfäden 36 unverformt nach oben oder nach unten ausgelenkt und somit ein Webfach gebildet, welches dem Schusseintrag eines Schussfadens zur Verfügung steht.

The heald 1 described so far works as follows:

• For the operation of a weaving machine, to form a shed, a plurality of healds 1 according to the design of Figure 1 are strung on the Litzentragschienen 2, 2 'of at least two webschäften. The healds 1 are the simplest Case formed completely identical to each other. They are held per heald at a distance which essentially corresponds to the warp width 36. Through the thread eyes 7 run those band-shaped warp threads 36, which are subject to the shedding. For shedding, the two healds are moved up and down in the longitudinal direction 4 with heddles 1 held by the heddle support rails 2, 2 '. The current through the thread eyes 7 band-shaped warp threads 36 are deflected undeformed up or down, thus forming a shed, which is the weft insertion of a weft available.

In a modified embodiment, the regions 12 of the healds 1 are not rotated by exactly 90 ° against the end eyes 5, 6. The healds 1 of the first and second heald can thereby slightly overlap, whereby denser tissues can be produced. Also in this embodiment, the existing from the viewpoint of the warp 36 clear width is at least slightly greater than the width of the flat warp 36th

It is further possible to make the heald 1 slightly asymmetrical, either by the openings of the end eyelets 5, 6 are eccentrically punched into the heald body 3 or by the twisted areas or the rotation areas 13, 14 are bent somewhat asymmetrically.

Figures 3a and 3b illustrate a modified embodiment of the heald 1, to which the above explanation applies, with the exception of subsequent modifications and additions accordingly. The thread eye 7 is in turn formed substantially rectangular. However, it will initially, as illustrated in Figure 3a, punched in an H-shape so as to free upper and lower flaps 19, 20 which extend toward one another. The flaps 19, 20 are then bent away from each other as illustrated in FIG. 3b. You can, as shown, are bent out of the thread eye 7 to the same side or in opposite directions out and form a wedge-shaped or funnel-shaped thread eye. Preferably, they are bent by an angle that is significantly greater than 90 °. The preferred embodiments use angles α between 110 ° and 150 °. The tabs 19, 20 can be oriented in the thread running direction or against the running direction of the warp threads 36. In any case, thread guide surfaces 17, 18 are formed, which, as can be seen in FIG. 3b, start on a flat side 21 of the region 12 and extend in each case as far as the free end 22, 23 of each lobe 19, 20. The corresponding length to be measured is thus greater than the thickness of the strand body 3. This embodiment is particularly suitable for band-shaped warp threads 36 made of sensitive, but less abrasive material.

It should be noted that the heald 1 'as well as all healds described below 1' have a thread eye 7 with a height H, which is smaller than the width B. However, the healds 1 'of these embodiments can be provided with thread eyes 7 without exception whose height H is greater than their width B.

FIGS. 4a, 4b illustrate another embodiment of the heald 1 '. The peculiarity of this embodiment is in Fadenleitelementen 24, 25, the thread eye 7 above and below gebanden and thus an upper and form a bottom edge. The yarn guide elements 24, 25 are formed for example by cylindrical pins which lie in corresponding grooves 26, 27 which are formed on the edges 10, 11. These grooves can be formed channel-shaped. The thread elements 24, 25 preferably have a diameter which is greater than the thickness of the strand body 3. As a result, the yarn guide surfaces 17, 18 formed on the yarn guide elements 24, 25 are given a length that is greater than the thickness of the strand body third

The thread guide elements 24, 25 are preferably identical to each other. They may for example be formed according to Figure 10a and made of a suitable material, such as hardened steel, hard metal, ceramic or other wear-resistant material. They can be soldered, welded or glued to the strand body 3. In addition, the yarn guide 24, 25 may consist of a plastic. The choice of the material of the yarn guide element 24, 25 may be based on the to be guided by the thread eye 7 warp.

In Figure 5a, 5b, a modified embodiment of the heald 1 'is illustrated. The thread guide elements 24, 25 here have a part-cylindrical, preferably semicircular cross-section. This simplifies the production in terms of the storage of Fadenleitelements 24, 25 and the attachment thereof to the heald body 3. Otherwise, the previous description of the embodiment according to Figure 4a, 4b applies accordingly for the embodiment of Figure 5a, 5b.

Figure 6a, 6b illustrates another modified embodiment of the heald 1 '. In this embodiment, yarn guide elements 24, 25 are provided, which start from a cylindrical basic shape and each have a corresponding groove for receiving the stranded body 3 at its side facing away from the thread eye 7 sides. The Fadenleitelemente 24, 25 can be easily and securely attached to the heald body 3 in this way. Preferably, a cohesive connection by gluing, soldering or welding. Otherwise, the previous statements apply accordingly.

FIGS. 7a, 7b illustrate another embodiment of the heddle 1 'according to the invention. The peculiarity of this heddle is that the heddle body 3 is provided on its flat side 28 with flat rod-shaped thread guide elements 24, 25 which overlap the upper edge 10 and the lower edge 11 of the thread eye 7. The thread guide surfaces 17, 18, which are formed by rounded edges of the Fadenleitelemente 24, 25, thereby limit the clear height H of the thread eye 7, wherein this clear height H is significantly less than the measured in the same direction distance between the edges 10, eleventh The projection of the thread guide elements 24, 25 over the edges 10, 11 is preferably so large that the warp thread does not touch the edges 10, 11. The projection of the thread guide elements 24, 25 over the edges 10, 11 is preferably so large that the warp thread does not reach the edges 10, 11 even if it is in a shedding position, i. when the heald has reached its upper or lower extreme position.

As FIGS. 8a and 8b show, corresponding yarn guide elements 24a, 24b, 25a, 25b can also be used on both flat sides 21, 28 of the base body 3 are attached. The overall width of these Fadenleitflächen 17, 18 is now again greater than the thickness of the Litzenkörpers 3. As the total width is here in Figure 8b to be measured from left to right Width of the individual partial surfaces 17a, 17b, 18a, 18b plus the respective distance between the partial surfaces 17a, 17b and 18a, 18b understood.

Both in the embodiment of Figure 7a, 7b and in the embodiment of Figure 8a, 8b, the thread guide elements 24, 25 may be formed as shown as separate elements or alternatively as part of a frame, each flat on the flat side 21 and / or 28 is attached. The geometry of the thread eye 7 is then determined by the frame. However, the illustrated embodiment is preferred with separate thread guide elements 24, 25 not connected to one another. The webs remaining on both sides of the thread eye 7 can vibrate or spring, without this being hindered by glued, soldered or welded elements, or by e.g. a ceramic thread guide would break. On the other hand, in the solution with a frame-shaped thread guide element, a reinforcement of the thread eye area of the strand body 3 can be achieved.

FIGS. 9a and 9b illustrate a further embodiment based on the embodiment according to FIGS. 8a, 8b, which differs in the form of the thread guide elements 24a, 24b, 25a, 25b from the preceding embodiment. The thread guide elements 24a, 24b, 25a, 25b are again designed as a cylindrical pin according to FIG. They are at the Flat sides 21, 28 attached and project beyond the edges 10, 11. The band-shaped warp thread passes over the yarn guide elements 24a, 24b, 25a, 25b, without touching the edges 10, 11.

In the aforementioned embodiments, the thread guiding elements 24, 25 may also be designed in the form of a cylindrical pin with end-side starting elements 29, 30 according to FIG. 10b. The thrust elements 29, 30 may be, for example, disk-shaped sections, the diameter D1, D2 is greater than the diameter D0 of the central cylindrical pin-shaped portion. The thrust elements 29, 30 may be provided with a one-sided flattening in order to facilitate attachment to one of the flat sides 21, 28 of the heddle body 3.

Figure 11 illustrates an alternative embodiment of the end loop 5 of the heald 1, which is suitable for all the aforementioned embodiments. To the end eyelet 5 include projections 31, 32, which are adapted to overlap the heddle support rail 2 and thereby secure the heald 1 to the heddle support rail 2. In the present embodiment, the projections 31, 32 are formed in the form of angled tongues, which have been released when punching an opening 33. The tongues have then been bent out of this opening 33 and angled at their ends on each other to form the heald bar 2 cross hooks. This embodiment has the advantage that the heddle body 3 rests flat against the support rail 2 and thus can not suffer any torsion. The defined by the projections 31, 32 receiving opening 34 for the Litzentragschiene 2 has compared to the Litzentragschiene 2 a significant vertical play, but only a small other game on.

The embodiment of the end eyelet 5 according to FIG. 11 can be modified. For example, the upper projection 31 can be replaced by a correspondingly bent end 31 'of the stranded body 3, as Figure 12 illustrates schematically. Also, the protrusion 32 may be replaced according to Figure 12 by an attached or welded sheet metal element 32 ', which is connected, for example, on a vertically oriented edge 35 with the heald body 3. The element 32 'can be obtained by bending over an edge portion of the heddle body 3 or separately attached to it.

A heddle 1 for flat, ribbon-like warp threads 36 has a thread eye 7, the width of which is preferably greater than its height. Such a thread eye 7 prevents deformation of the band-shaped warp thread 36, in particular a lateral collapse during shedding. In addition, the invention Weblitze 1 preferably Fadenleitflächen 17, 18, which, based on the running direction of the warp thread 37, are longer than the thickness of the heddle body 3 of the heald 1. By this measure, the wear on the heald 1, as well as on the Warp 36 can be reduced.

LIST OF REFERENCE NUMBERS

1

heald

2, 2 '

shaft stave

3

body

4

longitudinal direction

5, 6

end loops

7

thread eye

8, 9, 10, 11

edge

12

Area

13, 14

Bodies, turning points

15, 16

Stege

17, 18

thread guiding surfaces

17a, 17b, 18b, 18b

subareas

19, 20

cloth

21

flat side

22, 23

The End

24, 25, 24a, 24b, 25a, 25b

thread guiding elements

26, 27

grooves

28

flat side

29, 30

End stop elements

31, 32

projections

31 '

bent end

32 '

sheet metal element

33

opening

34

receiving opening

35

edge

B

width

H

height

D0, D1, D2

diameter

Claims (11)

Heald (1) for ribbon-like warp threads (36),
with a heddle body (3) extending along a longitudinal direction (4), which is provided at least at one end with an end eye (5, 6) for mounting on a heddle support rail (2, 2 '),
with a thread eye (7) which is provided on the heddle body (3) and whose width (B) to be measured transversely to the longitudinal direction (4) and parallel to the heddle support rail (2, 2 ') is greater than its longitudinal direction (4) ) height to be measured (H). Heald (1) for ribbon-like warp threads (36),
with a heddle body (3) extending along a longitudinal direction (4), which is provided at least at one end with an end eye (5, 6) for mounting on a heddle support rail (2, 2 '),
a thread eye (7) provided on the heddle body (3) and having an upper edge (10) and a lower edge (11) spaced from one another in the longitudinal direction (4),
wherein the upper edge (10) and the lower edge (11) form a thread guide surface (17, 18), which is formed on the thread inlet side and / or thread outlet side rounded and extending in the warp direction (36) Length is greater than the thickness of the heddle body (3) to be measured in the same direction on the thread eye (7). Healds according to claim 1 or 2, characterized in that the thread eye (7) defines an opening direction which lies in a plane extending from the longitudinal direction (4) of the heddle body (3) and from the thread running through the thread eye (7) ( 36). Heald heald according to claim 1 or 2, characterized in that the heddle body (3) consists of a band-shaped material and is oriented at least at its thread eye (7) transversely to the warp thread (36). Heald according to claim 4, characterized in that the heald body (3) is wound between its end eyelet (5, 6) and its thread eye (7). Heald according to claim 1 or 2, characterized in that the end eyelet (5, 6) is a separate, with the heddle body (3) connected to the element or integral part of the heddle body (3). Heald heald according to claim 1 or 2, characterized in that the heddle body (3) consists of a flat material which extends at the end eyelet (5, 6) parallel to the heddle support rail (2, 2 ') and at this by projections (31, 32), which are attached to the heddle body (3) and project beyond its flat side (21, 28). Healds according to claim 2, characterized in that the thread guiding surface (17, 18) is formed on tabs (19, 20) which are bent out of the thread eye (7). Heald according to claim 2, characterized in that the thread guiding surface (17, 18) is formed on thread guiding elements (24, 25) which are connected to the heddle body (3). A heald according to claim 9, characterized in that at least one of the yarn guiding surface (17, 18) is subdivided into two partial surfaces (17a, 17b; 18a, 18b) which are each formed on one of the yarn guide elements (24a, 24b; 25a, 25b) , Heald according to claim 9, characterized in that the yarn guide elements (24, 25) are formed from a plastic, a hard metal or ceramic.

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