DE102018215395B3 - WEAVING MACHINE WITH A FOOTWEAR CHAIN - Google Patents

Abstract

There is provided a weaving machine with a weft color selector 1, from which individual wefts of a number of provided weft yarns can be fed to a gripper in a selected order and which has a yarn guide 4, by means of which the weft yarns 2 supplied by a pre-pulser 2 can be fed to the weft color selector 1. The yarn guide eyes 6 of the weft color selector 1 are moved with a first drive 8 in a respective Hinreichungsposition 10, wherein in each yarn guide eyelet 6 at least one weft 2 is added to its selection and provision to the gripper 3 for weft insertion in a shed 11. By means of a driven with a second drive 9 Hinreichungsnadel 12 of the attached weft thread 2 is brought to the gripper 3 on the sufficiency position 10 in a transfer position. Each yarn guide eyelet 6 of the weft color selector 1 is open at least in its position of sufficiency 10 to the outside 13, via which the respectively selected weft thread 2 can be passed to the gripper 3 and can be transferred thereto by means of the appending needle 12. The Hinreichungsnadel 12 performs the weft thread 2 without deflection of the Fadenführungsöse 6 on the open outer side 13 out.

Description

The invention relates to a loom with a weft color selector having the features according to the preamble of claim 1.

Weft color selection devices for weaving machines are required when weft threads of different colors and / or different material properties are used in the production of a multi-colored fabric. But they are also used for monochrome fabric with the same weft materials, for example, to reduce the burden of the coils in the weft withdrawal. Such weft color selectors are known. The Schussfadenhinreichungen used in rapier are characterized by the fact that partially with up to 16 colors designed Hinreichungen are possible, but this represents a handicap for the weaver in terms of operation, because in particular the view to the eyelets not only difficult, but often completely is covered or the insertion of a weft thread is difficult in practice, which can lead to misinserts.

The known weft additions also have the disadvantage that the weft threads must be strongly deflected to the point of delivery and transfer to, for example, a gripper in Fadenführungsösen partly, which can quite damage the weft yarn occur. This limits the production of high-quality tissue, because in particular these damages are visible in the tissue.

In CN 101 314 881 B a weft color selector is described in which weft threads of different color or type are guided in each case by arranged in a color selection disc adjacent eyelets. The color selection disc with the individual eyelets makes it possible, when moving the same, to place a weft thread to be inserted in each case in a position in which a deletion needle can transfer the weft thread to a gripper. Since the gripper runs below the color selection device, the respective weft thread must be pressed or guided by means of the Hinreichungsnadel immediately after its exit from the color picker down to the gripper so that the gripper can take over the thread. A hard deflection of the weft thread with a possible damage of the same is inevitable.

In CN 105 274 712 A2 is described as a weft color selector a color choice, which has on its outer periphery guide eyelets through which weft threads of different color and / or type are guided. Although an arrangement in the immediate vicinity of a Hinreichungsnadel to the color dial is described in this known weft color selector, whereby a slightly gentler handling of the weft yarns when feeding the same is to be ensured to a gripper, nevertheless experiences each weft but a relatively hard deflection during transfer of the weft thread the gripping gripper before its entry into a shed. Although this not insignificant deflection in the closed eyelets in the color selection dial is well suited for guiding the weft threads, the weft thread is not necessarily guided smoothly.

In DE 38 08 777 A1 is a device for selectively feeding a weft thread from a number of multiple weft threads to a gripper projectile. For each individual weft yarn a nipper clamp for holding this weft thread is provided so that the respective weft yarns can be fed to the gripper. The clamping device is designed as a rotatably mounted ring with a ring clamp, which spans on their circular motion released from the rug clamp weft thread across the imaginary extension of the hook track. The according to the number of wefts to be provided existing number of lining clamps with corresponding means for carrying out the respective clamping action is mechanically quite complex and fixes, for example, the problem of accessibility of the weft threads when changing weft threads, nor the damage to the weft threads due to the clamping action by the lining clips.

Furthermore, in JP 2001/131847 A a weft color selector is described in which a weft thread ring is provided with a plurality of weft guide eyelets in which a weft thread is guided. By turning the weft thread a selected weft thread is always brought to a predetermined position, from which it can be grasped by means of a pivoting lever with a hook at the top and handed over for entry into a shed. A disadvantage of this known weft color selection device is that the rotatable weft thread ring is rotated relative to a fixed weft thread ring. Each addition or selection of a particular weft thread therefore all weft threads disposed between the fixed and the rotatable weft thread ring are rotated, whereby they learn sometimes hard deflections in the closed Fadenführungsösen.

In EP 1 500 731 B1 a weft feeder for looms with a single feeder bar is described. The weft guide has a perforated plate and a feeder fork, their movement by two drives is controlled, which are coupled together via a coupling gear. One drive is provided for the linear movement of the feeder fork and the other drive for a rotary or pivoting movement. The color selector has no color choice and has provided in all weft guide eyelets only closed eyelets, so that the weft threads experienced until reaching for gripping, for example by means of a gripper partly multiple and also hard deflections.

And finally is in GB 1 002 093 A a weft changer for looms with grippers described. To change a weft thread to a weft thread of another color, a plate-shaped lever with a closed loop in the direction of the transfer point is moved to the gripper. Each weft of a different color, however, has its own plate-shaped lever.

In contrast, the object of the present invention is to provide a weft color selector for a weaving machine, which avoids the disadvantages of known devices such as the rotation of the weft yarns between stationary yarn guide and color selector and minimizes or eliminates damage to the weft yarns due to deflection in the weft supply. Another object of the present invention is to provide a weft color selector for a weaving machine which does not obscure the view of the weaver on the eyelets when they are being fed so as not to allow a weaver comfortable weft insertion.

This object is achieved by a loom with the features of claim 1. Advantageous developments are defined in the dependent claims.

According to the invention, the weaving machine has a weft color selector device by means of which individual weft threads of a number of weft threads provided can be fed to a gripper in a selected sequence. The weft color selection device has a thread guide by means of which the weft threads, which are fed by a feeder, can be supplied via the thread guide to the weft color selection device. The weft color selection device has thread guide eyelets, which are movable with a first drive for the color disc such that a respective, selected weft thread can be brought into its respective position of sufficiency. The thread guide eyelets each take at least one weft thread for its selection and provision to the gripper for weft insertion in the shed. The weft color selector now has a number of yarn guide eyelets such that the number of weft yarns of different color or different material needed for the fabric to be woven can be provided so that one of each of the plurality of weft yarns provided for weft insertion is selected; which is required for the weave of the fabric.

Sufficient position is to be understood as meaning the position at which a yarn guide eyelet, namely the yarn guide eyelet from which the weft thread guided therein is to be fed to the gripper, is positioned such that the yarn guide eyelet for the selected weft thread is associated with the gripper with respect to its radial direction.

A Hinreichungsnadel, which is driven by a second drive, now leads the selected weft insertion weft thread from the Befreichungsposition the gripper, in which this weft thread is clamped, so that it is entered by the movement of the gripper through the shed into the shed. Regardless of the number of retained weft yarns is ensured with this arrangement of color wheel and Hinreichungsnadel that each weft yarn from the same position and under substantially identical conditions is supplied to the gripper. For each weft so there are identical conditions in its transfer to the gripper. The positive aspect of such an arrangement is that the adjustment and picking position of the presented weft from the gripper are greatly facilitated. In known systems with, for example, a number of delimbing needles corresponding to the number of wefts, the distance between the first and the last deliv- ery needle increases, making the system more prone to error.

According to the invention, the yarn guide eyelets of the weft color selector are formed so as to be open at least in their priming position toward the outside thereof. Under outer side is to be understood as the side of the thread guiding eye, which faces the gripper or the clamping member, by means of which the weft thread is inserted into the shed. By virtue of the fact that at least the yarn guide eyelet, from which a weft thread is now passed to the gripper, is open in the direction of the gripper, the weft yarn, when gripped by the plunge needle, is fed to the gripper for transferring the selected weft yarn to the gripper Gripper, without deflection out of the yarn guide eye on the open outside led out. This represents an extremely gentle transfer of the weft thread from the Yarn guide eye to the gripper, because when passing the weft thread provided for entry by means of Hirneichungsnadel the selected weft yarn learns no more deflection. Damage to the weft thread as a result of an otherwise quite hard deflection is thus excluded according to the invention.

According to a first embodiment of the invention, the weft color selection device has a color disc which has a defined number of thread guide eyelets, which are arranged in its outer peripheral region, each thread guide eyelet each having an opening extending radially to the outside of the color disc.

Preferably, the color wheel is driven by the first drive to its rotation, thus ensuring that the selected weft yarn is rotated with its Fadenführungsöse or with the opening of the yarn guide eyelet that the opening points to the gripper and thus assumed the sufficiency for the gripper Has. By this is meant to be understood here that the thread is aligned with respect to its opening of the thread guide eye on the gripper, thus taken in the Hinreichungsposition in the next step of the Hinreichungsnadel and can be fed directly to the gripper. The sufficiency position is therefore not the position which the weft thread has taken immediately upon transfer to the gripper by the Hinreichungsnadel. By moving the Hinreichungsnadel in the direction of the gripper, the selected weft thread is led out of the open Fadenführungsöse and can be supplied to the gripper. This is made possible by the fact that the opening of the thread guide eye points to the gripper and in this position, the caulking needle preferably in the direction of the opening of the thread guide eyelet to the outside of the color disc out the weft thread and feeds the gripper.

However, the movement of the delimbing needle need not necessarily take place in the radial direction of a line which runs through the fulcrum of the color disc and the opening of the thread guide eye from which the weft thread is to be fed. Rather, it is sufficient if the Hinreichungsnadel with respect to the color wheel over a color wheel with at least one extending in the radial direction direction component passes the weft thread to the gripper. Deviation from an exactly radial direction of the movement of the caulking needle may be due to the construction or function.

Preferably, the open Fadenführungsösen, which are not in their sufficiency, by means of a bolt to secure the respective weft thread in the respective Fadenführungsöse closed or secured or sealed or optionally also covered, wherein the thread guide eyelets closing latch has a slot which is always located at the sufficiency and after alignment of the color wheel with the opening of the yarn guide eye for the weft thread to be introduced to the slot and thus points to the gripper, so that the inserted weft without deflection from the open Fadenführungsöse be fed through the slot of the bolt to the gripper can. The color wheel is rotatable relative to the bolt with the first drive such that the slot always releases only the thread guide eyelet, from which the weft thread is transferred to the gripper.

The bolt can be arranged in the feed direction of the weft before, in height or after the color wheel. In an arrangement of the bolt before or after the color wheel, the bolt is preferably formed as a disc or disc segment analogous to the color wheel in the sense of a double disc arrangement and has a radially extending to its outer periphery slot, which is arranged in the Befreichungsposition, and represents an opening, which for each yarn guide eyelet of the color wheel in its sufficiency position feeding the weft thread to the gripper allows deflection. The bolt is preferably arranged close to the color wheel, preferably even touching it.

In an arrangement of the bolt in the amount of or in the plane passing through the color disc plane, the bolt may preferably be formed as a ring segment-shaped latch, which surrounds so to speak as a ring or ring segment spatially fixed the color wheel, preferably encloses and so covers the yarn guide eyelets of the color wheel, with the exception of that thread guide eyelet, which has been rotated to the position of sufficiency, at which the latch has a slot for deflecting the weft thread and transferring it to the gripper. Preferably, a ring segment-shaped latch is normally attached to the outer circumference of the color wheel having the open yarn guide eyelets, which is congruent with the shape of the smooth outer circumference of the color wheel. This ring segment-shaped latch serves to complete the open Fadenführungsösen, with the exception of the yarn guide eyelet of the weft thread, which is in the priming position for immediate transfer by means of the Hinreichungsnadel to the gripper. The closing of the other outwardly open Fadenführungsösen serves to ensure that the weft threads from their respective open Fadenführungsöse not fall out or lost.

After receiving the weft thread through the gripper, the tensioned by the entry in the shed thread over the movement of Hinreichenadel is returned through the slot in the thread guide eyelet of the color wheel and thus entered without deflection. Once the starting position of the priming needle has been reached, a rotation of the color disc to the newly insufficient sufficiency position is possible, or for the same color to be entered, the sufficiency of the color disc remains.

According to a second embodiment, the weft color selector is formed at least as an elongated element, in which yarn guide eyes are arranged side by side and each lead at least one weft. The yarn guide eyelets are in turn open via an edge of the elongate element facing the gripper. This is to ensure that only the weft thread to be inserted, located in the sufficiency position, can be fed to the gripper. However, so that the other weft threads do not accidentally or accidentally fall out of an open thread guide eyelet, a latch constructed as a longitudinal tie is preferably provided, which has a slot in the attachment position of the elongate element.

The thread guide eyelets are open towards the edge in the direction of a plane in which the gripper works. This ensures that the weft thread introduced in each case over the open edge of the thread guide eyelet into the wetting position is fed to the gripper in a deflection-free manner. Thus, when reaching the weft thread to be introduced, the weft thread undergoes no sharp deflection, the elongated element and thus the Fadenführungsöse or that, from which the weft is to be entered into the shed, as far as moved relative to the fixed longitudinal bar sideways in the direction of the gripper or moved in that the weft thread can be fed out of this open thread guiding eye via the slot in the longitudinal bar and fed to the gripper.

Preferably, the elongate element has a first drive, which is preferably a linear motor. This first drive moves the elongated element in the direction of its longitudinal extension by displacement, pulling or pressing, in such a way that the yarn guide eyelet, which has just the weft to be passed to the gripper, arrives in its position of sufficiency to the slot in the bar. However, this drive may preferably also be a hydraulic cylinder or a pneumatic cylinder, wherein this first drive is designed so that a linear drive movement is made possible for the movement of the elongated element in the longitudinal extent thereof. This is equally possible via known mechanical systems such as toothed belt, crank, etc., which are also used for a color wheel. However, it is also possible that the elongate element consists of two separate parts, which each have their own first drive for their movement in the respective longitudinal extent. It can thus be ensured that the length of the elongated element can be halved, for example, in order to obtain greater compactness of the weft color selector.

Preferably, the open Fadenführungsösen not located in its sufficiency position by means of the longitudinal bar to secure the respective weft thread in its respective Fadenführungsöse to the edge thereof are closed or covered or covered or closed. The elongate element is thus movable relative to the longitudinal latch, that only the thread guide eyelet located in the respectively selected sufficient position is kept open because the longitudinal latch has its slot there. From this thread guide eyelet provided for entry into the shed weft thread is brought to the gripper by means of a Hinreichungsnadel. Preferably, the caudate needle is formed as a pivoting bracket, and has a second drive for pivoting the pivoting bracket from a non-sufficiency position to a transfer position to a transfer position. The swivel bar is designed with a height such that the weft threads kept in the oblong element for weft insertion can be overlapped without contact by the scoring needle when the respective weft thread with its open thread guide eye is in the sufficiency position. In a superposition of two sub-elements of the elongated member, the temple height of the swivel bracket may indeed be greater, but the strap length is shorter in such a case, so that the stability is higher and the tendency to be susceptible to vibrations, is lower.

The longitudinal bar is spatially fixed with respect to its associated elongate member and preferably analogous to the embodiment with the weft color selector in the form of the color wheel in weft supply before or after the elongated element or at its height. Preferably, the longitudinal latch is as close as possible to the elongate member, preferably in sliding contact. "At the level" means that the elongated element is slidably or tightly disposed on the longitudinal bar, so that its movement until the thread guide loop, from which the weft thread is guided, leads should be registered to the slot, ie in the sufficiency position, takes place.

Preferably, the Hinreichungsnadel at its front region on a lowering also in the manner of an open eyelet. This reduction prevents lateral loss of the weft to be transported by means of the delimbing needle to the gripper during the wetting of the weft thread to the gripper. It is understood that the caulking needle is applicable in its formation with a depression for a color disc as well as for an elongated member with the corresponding open Fadenführungsösen.

For a double weft insertion, the caulking needle preferably has an open double reduction in the manner of a double fork. With such a double lowering, it is possible to supply two weft threads next to each other simultaneously a gripper. Preferably, the double lowering is matched in size to the thread guide eye or to the distance between two adjacent thread guide eyelets in the elongate element or in the color wheel. In order to realize a double weft insertion, the slot for releasing the weft threads to be entered is formed both at the longitudinal bar and the bolt for a color wheel with such a width that the weft yarns provided for the double weft insertion are both taken out of their respective yarn guide eyelets substantially simultaneously with the wetting needle can be handed over to the gripper.

Preferably, for the addition of weft threads to the gripper, a system with two Hinreichungsnadeln for the entry of a weft thread is provided. As a result, the flexibility of the weaving machine according to the invention is increased with the weft color selector, because thereby without constructive remodeling both the addition of a single weft thread and the addition of two weft threads, at the same time to a gripper is possible.

According to a further embodiment of the invention, the Hinreichungsnadel or have their Hinreichungsnadeln in their respective lowering a built-weft tension measuring sensor, by means of which in the presence of a weft thread in such a lowering the weft tension and in the sense of a weft yarn detector the presence of a weft thread can be measured. This makes it possible to set a thread tension required or desired for optimization for the weaving process.

• 1 eine Schussfadenfarbauswahleinrichtung in Form einer Farbscheibe, bei welcher die Fadenführungsöse mit einzubringendem Schussfaden in der Hinreichungsposition ist;
• 2 eine Schussfadenfarbwahleinrichtung mit der Farbscheibe gemäß 1, bei welcher eine Hinreichungsnadel für einen Doppelschusseintrag ausgebildet ist;
• 3 eine Farbscheibe mit ringsegmentförmigem Riegel zum Verschließen und Sichern der offenen Fadenführungsösen für nicht zuzuführende Schussfäden mit einem Schussfaden in einer Übergabeposition zum Greifer;
• 4 eine dreidimensional dargestellte Schussfadenfarbwahleinrichtung in Form eines länglichen Elementes gemäß einem zweiten Ausführungsbeispiel der Erfindung; und
• 5 die Schussfadenfarbwahleinrichtung in gegenüber 4 geänderter dreidimensionaler Darstellung.

Further advantages, details of the embodiment of the invention and possible applications will now become apparent with reference to the accompanying drawings. In the drawing show:

• 1 a weft color selector in the form of a color wheel, in which the yarn guide eyelet with weft thread to be inserted is in the priming position;
• 2 a weft color selector with the color wheel according to 1 in which a deletion needle is designed for a double weft insertion;
• 3 a color wheel with ring segment-shaped latch for closing and securing the open yarn guide eyes for weft yarns not to be supplied with a weft thread in a transfer position to the gripper;
• 4 a three-dimensional weft color selection device in the form of an elongated element according to a second embodiment of the invention; and
• 5 the weft color selector in opposite 4 changed three-dimensional representation.

1 shows a fabric section with spanned shed 11 in which on the side of a weft color selector according to the invention 1 in the form of a color disc 14 is shown according to a first embodiment of the invention. The color wheel 14 represents the actual thread guide 4 is and has on its outer circumference Fadenführungsösen 6 for weft threads on which the weft color selector 1 be fed from a feeder, not shown. Usually located in each thread guide eyelet 6 a weft 2 , The thread guide eyelets are from the outer edge or the outside 13 or the opening of the thread guide eye 6 in the color wheel 14 lowered into it.

The weft color selector 1 also has an extension needle 12 on, which at its front end a lowering 21 which is fork-shaped, so that between the prongs of the fork of the front end of the delineating needle 12 the weft 2 as soon as the color wheel 14 in the sufficiency position 10 is, by downward movement of the urinary needle 12 towards a gripper 3 the gripper 3 is fed, in which it is clamped. In the usual way, the weft yarn is held at a fabric edge in a catch bar until it comes back to the template.

The gripper 3 putting it in the shed 11 weft to be introduced 2 is stuck to a gripper guide rail 26 guided and takes after the clamping of the weft thread 2 as it moves through the shed 11 the weft with, so this in the shed 11 is registered. By a movement of the batten, which is not shown here, the weft is 2 then tied to the binding point and thus tied in the fabric and the edge or catch strip. By reading the new binding-dependent opening of the subsequent shed 11 becomes the weft 2 in the tissue 24 tied.

The color wheel 14 has a first drive 8th on, by means of which the respective thread guide eyelet 6 into the sufficiency position 10 turns so that with the delicacy needle 12 and its forked end after discarding the color wheel 14 with respect to the weft thread to be introduced from a non-sufficiency position (not shown) into a sufficiency position 10 by lowering the urinary needle 12 the weft 2 from the thread guide eyelet 6 led out without deflection and the gripper 3 for clamping it is passed. After clamping, the re-weft insertion is realized. Moving the suffix needle 12 takes place by means of a second drive 9 ,

The number of usable different colors or different materials for the weft threads is defined by the number of yarn guide eyelets 6 in the color choice 14 ,

In this embodiment, the weft color selector is formed as a double array of two disk segments. The arranged in the feed direction of the weft thread from the disk segment provides a bar 16 which is for closing the open Fadenführungsösen of the rear in the feed direction of the weft yarn segment 14 , serves, whose weft threads should not be entered in the shed. The bar 16 formed front disk segment has a fixed position, whereas the disk segment formed with the open yarn guide eyelets 14 opposite the bar 16 is rotatably movable. In each Fadenführungsöse at least one weft thread is guided. That with the thread guide eyelets 6 provided disk segment in the form of the color wheel 14 is now rotated so that the thread guide eyelet 6 from which a defined or selected weft 2 the gripper 3 to be handed over, with a slot 15 (please refer 3 ), so that the supplied weft without deflection from the Fadenführungsöse 6 the gripper 3 can be supplied. The Fadenführungsösen, which are not in the Hinreichungspostion 10 be through the bar 16 closed to prevent accidental or unintentional falling out of the reproached weft threads. The one with the slot 15 provided as a bar 16 formed front disk segment has a parallel to the outer periphery of this disk segment extending longitudinal slot 20 on, which through a breakthrough just the slot 15 has trained. Only if the slot matches 15 With a defined thread guide eye from which a corresponding weft thread is to be supplied to a gripper, the weft thread by means of the Hinreichungsnadel 12 deflection free the gripper 3 be supplied. The slot 15 in the front disk segment is formed radially to its outer periphery. The bar 16 trained disk segment is preferably close to the color wheel 14 , preferably even touching, arranged.

If the weft 2 in his sufficiency position 10 is and ready for that is the sufficiency needle 12 him to the grapple 3 passes, by lowering the suffusion needle 12 the weft 2 from the outwardly open Fadenführungsöse 6 through the slot 15 in the bar 16 led out and has anyway with respect to the immediate color wheel 14 no deflection at any edge, leaving the weft 2 does not experience any injury to its exterior.

In 2 is an arrangement of a weft color selector 1 in the form of a color disc 14 shown, which basically according to the representation according to 1 corresponds, in which, however, the Hinreichungsnadel 12 at its front end to simultaneously seize two weft threads for a double weft insertion two subsidence in the sense of a double lowering 22 in which in each case a weft thread 2 located. The distance of the subsidence 21 in the front end of the urinary needle 12 corresponds essentially to the distance of the open Fadenführungsösen 6 in the color wheel 14 so that when you move down the suffix needle 12 two weft threads 2 from their respective yarn guide eyelets 6 led out and together the gripper 3 be fed for the double weft insertion. The illustrated tissue 24 shows a finished piece of fabric with a cut edge or insert edge 25 and from the binding point of the fabric forth in the right direction of the drawing a spanned shed 11 ,

In 3 is a double array of disc segment type color wheel 14 and also disc segment-like bar 16 shown. In 3 is in Schussfadenzuführrichtung the front in the double arrangement of the two disc segments latch 16 followed by the thread guide eyelets 6 having color wheel 14 , The disk segment-like latch 16 has a longitudinal slot extending parallel to the circumference in its circular circumferential direction 20 on which a slot 15 in the sense of a breakthrough through the outer resulting annular Footbridge of the bolt 16 represents. The bolt 16 is in a fixed position with its slot 15 is arranged so that a through this slot from an open Fadenführungsöse 6 the color wheel 14 led out weft yarn can be fed to a gripper. In 3 It is now shown that a weft thread within the longitudinal slot following the circumferential contour 20 in the bar 16 secured against accidental falling out, on the other hand, a for entry into a shed 11 provided weft 2 already through the slot 15 and hence also from the corresponding guide eyelet aligned with the slot 6 has been led out, with the help of the urinary needle 12 , which has a corresponding fork-shaped lowering in its front end, the gripper 3 has been supplied to the terminals. The position in which the dilator needle is the gripper 3 supplied weft yarn is called transfer position. In the 3 shown weft situation is thus the one which has emerged after the color wheel 14 with its thread guide eyelet 6 , from which a corresponding weft thread 2 the gripper 3 should be supplied in accordance with the slot 15 of the bolt 16 has been brought and by means of the delicacy needle 12 this weft from the open Fadenführungsöse 6 through the slot 15 has been brought into the transfer position, which in 3 is shown. In the transfer position, a clamping device engages the gripper 3 This weft and then brings the weft in the shed.

In 4 a second embodiment according to the invention is shown, in which the weft color selector 1 as an elongated element 17 is formed, in which side by side down toward the tissue 24 arranged Fadenführungsösen 6 are provided. The elongated element 17 trained thread guides 4 is by means of a first drive 8th offset so that in the respective to the bottom open to eye guide eyelets 6 arranged weft threads 2 in the longitudinal direction by means of the first drive 8th from a non-delivery position (not shown) to a delivery position 10 to be brought. The second in the direction of the weft insertion, as an elongated element 17a trained thread guides 4 may even have closed loop eyes, without a strong deflection between the two elongated elements arranged one behind the other 17 . 17a of the weft 2 is available. The suffusion needle 12 has at its front end a lowering 21 on.

In 4 is clearly seen that the longitudinal bar 18 between the closed eyelet having yarn guide 4 and the elongated member having the eyelets open 17 is arranged. By way of example, only two weft threads are shown. In the illustration according to 4 Right weft is now using the thread guide 4 aligned so that the weft 2 exactly in the position of the fixedly arranged longitudinal bar 18 located in which the thread guide eyelet 6 of the elongated element 17 to the slot 15 in the longitudinal bar 18 is aligned so that the weft thread then by means of the swivel bracket 19 and the corresponding reduction 21 , which at the front area of the as a swivel bracket 19 trained Abreichungsnadel is, from the Fadenführungsöse 6 from exactly this sufficiency position 10 in the transfer position to the gripper 3 can be performed. The in 4 On the other hand, the weft thread arranged on the left is outside the slit 15 in the longitudinal bar 18 arranged and therefore can not be guided without deflection of the corresponding yarn guide eyelet. It is always the longitudinal bar 18 which closes the open thread guide eyelets, which applies to all those weft threads or weft guide eyelets with corresponding weft threads which are not provided for weft insertion.

As a swivel bracket 19 trained delicacy needle 12 with a second drive 9 engages over the gripper 3 together with its gripper guide rail 26 and leads him into the shed 11 weft to be introduced 2 from the downwards open thread guide eyelet 6 out and leads this deflection free to the gripper 3 , which clamps it and then into the shed 11 enters. The in 4 in the direction of insertion for the weft in front, ie the first arranged yarn guide 4 or the elongated element 17a with its closed eyelets comes with a likewise arranged there first drive 8th essentially in synchronism with the movement of the actual yarn guide 4 or elongated element 17 moves, allowing additional deflections of the weft 2 on the way to the grapple 3 be avoided.

5 shows the weft color selector 1 in one opposite 4 changed three-dimensional representation, the viewing direction of the representation is not so much from above, as in 4 the case is, but is more represented from the side of the fabric forth. This has the advantage that the spatial arrangement of the various assemblies such as elongated element 17 . 17a with thread guide eyelets 6 , first drives 8th for the thread guides 4 and a second drive 9 for the swivel bracket 19 better shown. In 5 is shown that the swivel bracket 19 the weft 2 straight from the open to the outer edge yarn guide eyelet in the elongated element 17 brought out. For the sake of view, the slot 15 in the longitudinal bar 18 in this illustration according to 5 not visible.

To be in both the first embodiment according to the 1 and 2 and 3 as well as the second embodiment according to the 4 and 5 To achieve optimal weaving conditions is further provided that in the fork-like lowering 21 the suffix needle 12 a weft tension measuring sensor 23 (please refer 3 ) which outputs an information or a signal to the prevailing thread tension. This can be ensured that during the entire weaving process, the thread tension can be kept substantially constant or at a corresponding desired value, which ensures optimum web conditions.

swivel bracket 19 and handing over 12 be after handover of the weft 2 to the gripper 3 moved back to their respective starting position.

LIST OF REFERENCE NUMBERS

1

Weft color selector

2

weft

3

grab

4

thread guides

6

thread guiding eye

8th

first drive

9

second drive

10

Hinreichungsposition

11

shed

12

Hinreichungsnadel

13

Outside thread guiding eye

14

Color disc / disk segment

15

slot

16

bars

17

elongated element

17a

elongated element

18

longitudinal bars

19

swivel bracket

20

longitudinal slot

21

Lowering suffix needle

22

double setback

23

Weft-voltage measuring sensor

24

tissue

25

Depositors edge / cutting edge

26

Gripper guide rail

Claims (13)

Weaving machine with a weft color selection device (1) from which individual weft threads of a number of provided weft threads (2) can be fed to a gripper (3) in a selected order and which has a thread guide (4), by means of which the weft threads fed by a pre-winder via a thread guide (4) can be fed to the weft color selection device (1) by means of which the first drive (8) can be brought into a respective attachment position (10) and at least one weft thread (2) is selected for its selection and provision to the gripper (3 ) for weft insertion in a shed (11) and the draped weft yarn by means of a second drive (9) driven Hinreichungsnadel (12) to the gripper (3) in the Hinreichungsposition (10) can be supplied, characterized in that each Fadenführungsöse (6 ) the weft color selector (1) at least in its sufficiency position (10) to the outside through which the respective selected weft thread is accessible to the gripper (3) and can be transferred to it by means of the dissecting needle (12), wherein the wetting needle removes the weft thread without deflection from the thread guide eye (6) via the open outer side (13 ) the thread guide eyelet (6) leads out. Weaving machine after Claim 1 , characterized in that the weft color selection device (1) has a color disc (14), the thread guide eyelets (6) are arranged in its outer peripheral region and each have an opening (13) radially extending opening. Weaving machine after Claim 2 characterized in that the Hinreichungsnadel (12) with respect to the color wheel (14) via a color wheel (14) with at least one extending in the radial direction direction component, the weft thread (2) to the gripper (3) passes. Weaving machine after Claim 2 or 3 , characterized in that the not in its sufficiency position (10) located Fadenführungsösen (6) by means of a slot (15) having a bolt (16) for securing the respective weft thread (2) in the respective thread guide eye (6) are closable, wherein the Color disc (14) relative to the latch (16) by means of the first drive (8) is rotatable so that the slot (15) always only the thread guide eyelet (6) releases, from which the Weft thread (2) from the sufficiency position (10) to be transferred to the gripper (3). Weaving machine after Claim 1 , characterized in that the weft color selection device (1) is formed as at least one elongate element (17), in which its respective one weft thread (2) leading Fadenführungsösen (6) are arranged side by side and on the gripper (3) facing outside (13 ) are open. Weaving machine after Claim 5 , characterized in that the elongate element (17) by means of the first drive (8) in the form of at least one linear motor is displaceable in its longitudinal extent such that the yarn guide eyelet (6) which the just to be transferred to the gripper (3) weft thread ( 2) leads, reaches its sufficiency position (10). Weaving machine after Claim 5 or 6 , characterized in that the not in their sufficiency position (10) located Fadenführungsösen (6) by means of a slot (15) having a longitudinal bar (18) for securing the respective weft thread (2) in its respective thread guide eye (6) are closable, wherein the elongated element (17) relative to the longitudinal bar (18) is displaceable such that only in the selected sufficiency position (10) located on the slot (15) yarn guide eyelet (6) is open. Weaving machine according to one of the Claims 5 to 7 , characterized in that the elongated element (17) consists of two separate parts, each having a linear motor for their displacement. Weaving machine according to one of the Claims 5 to 8th , characterized in that the Hirneichungsnadel is formed as a swivel bracket (19), a drive for pivoting the swivel bracket from a non-sufficiency position on the Hinreichungsposition (10) in a transfer position, in which the selected weft thread can be transferred to the gripper, and the Swivel bracket (19) is formed with such a bracket height, that in the elongated member (17) held up for weft insertion weft threads (2) are overlapped by the swivel bracket (19) without contact. Weaving machine according to one of the Claims 1 to 9 , characterized in that the Hinreichungsnadel (12) has at least one reduction (21), which prevents lateral loss of the weft thread (2) when it reaches the gripper (3). Weaving machine according to one of the Claims 1 to 10 , characterized in that the Hinreichungsnadel (12) has a double lowering (22) in the manner of a double fork for a double weft insertion. Weaving machine according to one of the Claims 1 to 10 , characterized in that two Hinreichungsnadeln (12) for the entry of a respective weft thread (2) are provided. Weaving machine according to one of the Claims 1 to 12 , characterized in that the Hinreichungsnadel (12) in its respective weft thread (2) the gripper (3) zubringenden lowering (21) has a weft tension measuring sensor (23), by means of which the weft tension and in the sense of a weft thread guard the presence of a weft thread (2) can be measured.

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