DE102010007048A1 - Method and weaving machine for producing fabrics with additional weft effects - Google Patents

Abstract

On a weaving machine for the production of fabrics with additional weft effects, an effect yarn fed in the warp direction is displaced above a warp yarn to be introduced for each cycle of movement of the loom in the weft direction over adjacent warp yarns. In the subsequent positioning of the effect thread below the weft thread to be introduced, the effect thread appears in unilaterally upwardly open reed gaps of a weaving reed. In order to generate this movement sequence, a guide means of the effect yarn is moved in the vertical direction and in the weft direction in a plane which lies between the shed forming elements and the position of the reeding device during the weft insertion.

Description

The present invention relates to a method and a weaving machine for producing fabrics with additional weft effects.

In weaving machines, it is known in the prior art to include additional threads running in the warp direction in such a way to the weave that certain additional impact effects are achieved. For this purpose, these effect threads are placed in the weft direction before the entry of a weft thread for each cycle of movement of the loom in another position.

Such a loom, for example, shows the device according to EP 0 957 191 , This device is characterized in that there are means for moving additional warp threads. These means consist in curved bars, which are arranged on support beams, which are arranged downstream of the reed. The support beams with the curved rods attached thereto are individually programmable freely displaceable in a direction parallel to the extension of the registered weft threads under control of corresponding drive elements for each cycle of movement of the weaving machine. In addition, the support beams are mounted so that they are individually rotatable about their longitudinal axis by means of an additional drive.

The additional warp threads are guided on the curved bars, so that they are displaced in the weft direction when the carrying bars are displaced. The curved rods and the movable support beams are arranged downstream of the reed in this loom. That is, in the area in which the weft threads are registered and struck on the fabric edge. As a result of the rotation of the support beams, the tips of the curved rods and thus the additional warp threads guided through them can be brought vertically above or below the weft threads to be inserted and can be crossed with these in the form of a weave.

A disadvantage of this arrangement is that the weft insertion is hindered by the curved rods in the area in front of the reed. An application in air-jet weaving machines, in which a channel for guiding the weft thread to be introduced is integrated in the reed, seems impossible and also with the use of gripper elements are given with this arrangement restrictions.

Moreover, at the EP 0 957 191 for the rotation of the support beam about its longitudinal axis a complex special drive required.

Also the US 3,796,234 as well as the US 2009 0272 455 A1 describe devices for moving additional warp threads or effect threads, which are also arranged in front of the reed in the region of the fabric edge to which the weft yarn is struck.

The US 3,796,234 discloses mechanical gear for driving the guide elements over which the effect threads are positioned in the weft direction and vertically. In the US 2009 0272 455 A1 an embodiment is disclosed in which motorized, programmable drives are provided for positioning in both directions.

In the EP 263,392 Also, a loom with devices for shifting additional warp threads - so-called diagonal threads - described in the weft direction. These devices consist in one embodiment in diagonal yarn displacement rollers, which by means of thread-like grooves, the diagonal yarns for each cycle of movement of the loom transport a Rietlücke further in the weft direction. In further embodiments of this loom shifting devices are shown with guide pins or grooved Umbleplatten. In all embodiments of the EP 263,392 These displacement devices are arranged between the supply rolls for the warp threads or diagonal threads and the various shed forming elements with which the base warp threads or the diagonal threads are deflected vertically to form a shed.

The EP 263,392 also describes Webblatteinrichtungen whose reed teeth can enter and disappear in the bevy of warp threads and diagonal threads. From this entry and exit each of the complete crowd of all warp threads and diagonal threads is affected. These Webblatteinrichtungen are arranged between the shedding elements and the fabric edge. The entire device seems to be useful only for lattice-like fabric structures in the field of low warp technical fabrics.

The CH 27499 Finally, shows a device for moving warp threads in the weft direction, which is arranged between the reed and the shed forming elements. With this device, however, additional threads or effect threads in the weft direction can only be displaced over such warp threads and tied off with a weft thread, all of which are pulled together with the respective effect thread into one and the same reed gap of the reed. This is useful for the formation of tissue edges, but not for the production of tissues with true additive shot effects. This device also does not allow the size of the displacement of one or more Effect threads in the weft direction for each cycle of the weaving machine to vary within wide limits. The size of the displacement in the weft direction is determined by the structural conditions of the device from the outset. Also the DE 1 230 727 shows such a device, which is used primarily for the formation of tissue edges.

Object of the present invention is to provide a method and a weaving machine for the production of fabrics with additional weft effects, in the effect threads that are fed in addition to the warp threads for each cycle of the weaving loom weave weaving dependent within wide limits variable in weft direction over several in different Rietlücken withdrawn warp threads moved away and can be tied with the weft threads, without being hindered by additional mechanical elements between the reed and fabric edge of the weft insertion. The arrangement should be suitable for air and rapier weaving machines and enable high web performance. The use is to be possible for fabrics which have warp densities in the range of conventional clothing fabrics, but also for lattice-like fabrics with low warp density.

The object is achieved by a method and a loom according to the independent claims.

• – Bilden eines von Kettfäden begrenzten Webfachs durch Fachbildeelemente,
• – Positionierung eines Effektfadens oberhalb eines einzutragenden Schussfadens,
• – Verschieben des Effektfadens in Schussrichtung um einen für jeden Bewegungszyklus vorgegebenen Verschiebeweg
• – Positionierung des Effektfadens unterhalb des nächsten einzutragenden Schussfadens
• – Eintrag des Schussfadens in das Webfach in einer Schussrichtung
• – Anschlagen des Schussfadens an einen Geweberand durch eine Webblatteinrichtung, die eine Anschlagbewegung mit zwei Endpositionen ausführt.

The method according to the invention for producing a fabric with additional weft effects is based on consecutive movement cycles of a weaving machine. In this case, a movement cycle consists of the process steps already known in the prior art

• Forming a weaving shed bounded by warp threads by shedding elements,
• Positioning an effect thread above a weft thread to be inserted,
• - Moving the effect thread in the weft direction by a given for each movement cycle displacement
• - Positioning of the effect thread below the next weft thread to be entered
• - Entry of the weft thread in the shed in a weft direction
• - Stopping the weft thread to a fabric edge by a Webblatteinrichtung that performs a stop movement with two end positions.

According to the invention, the method is characterized in that the effect thread in the positioning above the weft thread to be inserted in the vertical direction from a reed gap formed by reed teeth emerges on one side and immersed in positioning below the next to be inserted weft thread in another Rietlücke.

Such formed Rietlücken arise when summarizing the reed teeth of a reed only at its lower end in a Rietbund, with a provided in conventional reeds upper Rietbund deleted.

In order to produce the movement sequence according to the described method, according to the invention a guide means of the effect thread in the vertical direction and in the weft direction is moved in a plane which is arranged between the shedding elements and the end position of the stop movement, which is closer to the shed forming elements.

With the method according to the invention, the desired additional impact effects can be achieved without disturbing the weft insertion by mechanical elements in the area in front of the reed.

By dousing or immersing the effect thread according to the invention, it is advantageously possible to move the effect thread in the position above the weft thread to be inserted even over several Rietlücken - and thus over one or more warp threads away- in the weft direction.

An advantageous embodiment of the method also provides that several effect threads are moved and positioned simultaneously.

For certain binding forms of the tissue to be produced, it may be useful that the effect thread is not positioned below the weft thread to be introduced during one or more movement cycles. There is then no bond between this effect thread and the subsequently entered weft instead. The effect thread lies in the finished fabric over the registered weft thread.

It is also possible a modification of the method according to the invention, in which to move multiple effect threads in opposite direction and / or with different displacement paths in the weft direction. This can also achieve more complex additional impact effects.

The loom according to the invention according to the independent device claim includes any known types of shingles for driving shed elements, the vertical movement of which forms a shed bounded by warp threads. Furthermore, means for entry of a weft thread in the shed in a weft direction and a Webblatteinrichtung for striking the weft thread to a fabric edge available. Finally, this weaving machine includes a displacement drive which drives a displacement device in the weft direction, on which at least one guide means is provided, with which an effect thread can be displaced in the weft direction and positioned vertically. In this case, different displacement paths of the effect thread in the weft direction for different movement cycles of the weaving machine can be predetermined via the displacement drive. Of course, a group of several guide means for a plurality of effect threads may also be attached to a displacement device so that they can be displaced synchronously with each other in the weft direction.

In general, the effect threads which come into consideration here run essentially in the warp direction within the weaving machine and are pulled off from a thread supply on the back side of the weaving machine.

The warp direction refers to the course of the warp threads from the back to the front of the loom, regardless of the vertical position in which the respective threads are located.

At the Webblatteinrichtung a weaving machine according to the invention, the reed teeth already described in the method are now mounted such that they form unilaterally open at the top Rietlücken, in which the effect thread on or can dive.

A further feature of the invention is that the guide means is arranged in a plane which extends between the shedding elements and those of two end positions of a stop movement of the reed teeth, which is closer to the shedding elements. This is generally the position of the reeding device with reed teeth during weft insertion.

Because of the described arrangement of the guide means in combination with the unilaterally open Rietlücken the weaving machine according to the invention, the production of fabrics with a variety of additional weft effects without disturbing the weft insertion by mechanical elements in the area between reed teeth and fabric edge possible. In this area, no guide means of effect threads dip into the shed formed for the weft insertion through the warp threads.

With the weaving machine according to the invention higher web performances can be achieved in the production of fabrics with additional impact effects, since less consideration must be given to the weft insertion elements in the design of the movement sequence for the guide means. In addition, there is a structure with which further advantageous embodiments are possible.

To set the effect threads with the registered weft threads, the effect threads must be brought alternately into the upper or lower shed during the weft insertion

Advantageously, this positioning takes place in that the guide means with the effect thread over one of the shedding elements - z. B. a hive - and thus one of the shed drives a shedding machine in the direction of the shedding elements so vertically up and down driven.

For this purpose, guide means, displacement device and displacement drive are connected to one of the shedding elements.

The guide means may be, for example, needles with eyelets, one or more of which are attached at one end to a needle bar. This needle bar forms together with a running in the weft direction z. B. prism-shaped linear guide the displacement device, which is fastened together with an electric motor drive as a displacement drive on the front of a heald. The displacement drive can be designed, for example, as a linear drive whose stator is integrated in the frame of the heald or in the prismatic linear guide. However, other drives are conceivable; For example, drives with movement spindles or hydraulic or pneumatic drives that can be controlled by a control device of the loom. In purely mechanically operated weaving machines, it is also possible to use a displacement drive which is mechanically driven by means of linearly moved strands via punched cards in a manner familiar to the person skilled in the art for each movement cycle.

This shedding machine, which drives the heald, can be, for example, an eccentric machine. In this case, by a rotation between the eccentrics for the basic weave of the warp threads and the eccentrics for effect binding, that is, for the vertical movement of the effect threads, a particularly favorable timing of shedding can be achieved.

But there are also other conventional shedding z. B. shaft or Jacquard machines possible. Also a combination z. B. from Exzentermaschine for effect binding and Jaquardmaschine for the plain weave is conceivable.

It is also conceivable, the displacement device - z. B. a needle bar with running in the weft direction linear guide - and the associated Store shift drive in an additional vertical linear guide in the weaving machine and connect with the strands of a Jaquard machine such that the vertical movement of the effect threads can be controlled via the Jacquard machine.

The aforementioned embodiments have the advantage that no expensive additional gear, drives or controls must be used for driving the guide means in the vertical direction, because existing shedding elements and shingles drives can be used.

A further embodiment, however, provides that the guide means is vertically driven by one of the shed forming elements by its own independent drive.

Thus, the sequence of movements with respect to timing and with respect to the stroke of the guide means from the top to the lower compartment can be designed freely programmable in an advantageous manner.

In the case of small displacement paths, it would also be conceivable to drive the guide means in the direction of firing via one of the shedding elements, ie together with the sheave. Accordingly drive in a further embodiment of the invention, one or more displacement drives the displacement device not directly, but on the shedding element -. B. the heald, on the front side of the displacement device is arranged with the guide elements.

The displacement device may in this case contain elements with which a unique positioning of the guide means in the weft direction can be carried out during assembly and adjustment of the loom.

In the context of the invention, an additional advantageous embodiment results in that a plurality of guide means are associated with a displacement device and a displacement drive. It is also possible that a plurality of groups of guide means are present, to each of which a displacement device and a displacement drive are assigned. In addition, each of these groups or even each system of a plurality of such groups may each be connected to a different one of the shedding elements.

With such an arrangement, there is the advantageous possibility to drive these groups or systems of displacement devices and displacement drives in the weft direction in opposite directions and / or with different sized displacement paths. This can z. B. mirror image, symmetrical additional firing effects can be achieved.

Since the guide means are in the area between the rear, closer to the shedding elements end position of the reed teeth and the shedding elements, it is obvious if the effect threads, which are generally deducted from a thread supply in the back of the weaving machine, by means of a deflection over the shedding elements are fed to the guide means. In the course between the thread supply and deflection can also be arranged one of the usual Kettfadenwächter devices for monitoring in case of yarn breakage.

In a preferred embodiment of the invention, the guide means on thread eyes with round, oval or slot-shaped opening through which the effect threads are guided. The different opening shapes allow an adaptation to different cross sections of the effect threads used. Furthermore, it is particularly advantageous if the guide means is designed so that it has a wedge-shaped or conically shaped tip facing the warp threads in the region below the thread eye. The tip assists that, in a vertical movement, the guide means presses the ground warp threads apart such that adjacent warp threads each form an avenue for the passage of the effect thread when immersed in a reed gap. This avoids that the effect thread when entering and exiting undesirably intersects with adjacent warp threads.

For large displacement paths across several Rietlücken away results between the point at which the respective effect thread is tied to the last registered weft thread on the fabric edge and the current, shifted in the weft direction position of the guide means of this effect thread a thread course, the warp threads of the upper shed at an angle crosses. This crossing or diagonal course may cause the effect thread to hang when immersed in a rivet gap at the upper end of one of the reed teeth that delimit this reed gap.

To avoid this, provides an advantageous embodiment of the invention that the reed teeth at its upper end at the exit of the Rietlücken a tapering in the warp direction -. B. tapered tapered - have material cross-section. The apex of this taper should be near or at the edge of the reed teeth facing the guide means.

The risk that an effect thread gets caught on a reed tooth, is also reduced by a chain in the smallest possible distance between the upper ends of the reed teeth and the tip of the guide means. This distance is selected smaller than 3 mm in an advantageous embodiment; preferred is a distance that is less than 2 mm.

In the following, advantageous embodiments of the invention will be explained in detail with the aid of the figures

1a Schematic representation of an embodiment of the weaving machine according to the invention with a view in the weft direction

1b Detail X off 1a with view in weft direction and with view in warp direction

2 Top view of the illustration according to 1

3 Diagram of the movements of rewinder, shedding and management tools

4 fabric pattern 4.1 - 4.4

5 similar 1 but in an embodiment with independent drive of the shed element.

6 Top view of the embodiment according to 5 with drive of the displacement device in the weft direction over the shedding element

6b Detail views of the compartment picture element of 6 from above and in the warp direction

7 Arrangement with two groups of guide means and displacement devices

8th Top view of the arrangement 7 , Drive the displacement devices on various shedding elements

9 fabric patterns 9.1 .- 9.4 ., Which with an arrangement according to the 7 and 8th can be generated.

The 1a , Federation 2 show in a partial view of a weaving machine according to the invention with compartment drives 9 for driving shedding elements 4 , by their vertical movement one of warp threads 1 limited shed 1.1 . 1.2 is formed. The shingles known to those skilled in the art 9 For example, they can be made up of a group of levers and rods below the shingles 4 are arranged and arranged the drive movements of a machine frame outside of the not shown shedding machine to the shedding elements 4 transfer. However, there are also any other electromechanical, hydraulic or pneumatic devices than shingles drives 9 usable.

The shedding elements 4 consist in the present example of known heddles with strands, through whose Litzenaugen the warp threads 1 be guided. Furthermore, those skilled in the art also known devices for entry of a weft thread 3 in the shed 1.1 . 1.2 in one shot direction 12 available. These may be devices for mechanical weft insertion by means of wipers or grippers or means for pneumatic weft insertion. In the example in 2 shown is a device with grippers which are pushed in a known manner via not shown gear and two drive wheels from both sides of the loom in the shed. The weft 3 is in this embodiment of a shot coil on a Vorspuler and a color picker 19 fed to one of the two grippers and transferred in the middle of the machine to the other gripper. Of course, the use of different weft threads for different movement cycles is conceivable. The selection and presentation of the weft threads to a gripper z. B. by means of a color selector 19 , Such designs are known to the expert for air and rapier weaving machines.

Furthermore, a Webblatteinrichtung 10 . 7 . 7.1 for striking the weft thread 3 to a fabric edge 13 present, consisting of a reed storage 10 with reed teeth 7 and a Rietbund 7.1 consists. These reed teeth 7 form between one-sided upwardly open receiving spaces, so-called Rietlücken 14 so that threads are in the direction of the warp threads 1 run from back to front through the loom, from above into these Rietlücken 14 immerse and thus of the reed teeth 7 in the weft direction 12 can be performed.

The person skilled in the art is familiar with the weft direction 12 both opposed to each other, parallel to the weft insertion directions are meant. The reed teeth 7 are over the Rietbund 7.1 at the reed storage 10 attached and lead together with this at every cycle of the weaving machine a stop movement 15 - 15.1 out. Finally, in the present embodiment according to 1 and 2 a displacement device 5 attached with a prism guide on the frame of the heald, according to 2 three guiding means 11 are attached, with which three effect threads 2 in the weft direction 12 around the way A can be shifted.

By a displacement drive 6 who is the shifting device 5 drives are different displacement paths A of the effect threads 2 predeterminable for different movement cycles of the weaving machine. It makes sense to use an electromotive, freely programmable linear drive as a displacement drive 6 , This can be achieved that the displacement A via a control device 8th the weaving machine and the displacement drive 6 is freely programmable for each cycle of movement of the loom.

To the effect threads also vertically above or below the weft thread to be entered 3 To be able to position, in the present embodiment, guide means 11 , Displacement device 5 and displacement drive 6 with one of the shedding elements 4 connected and are moved vertically with this. The shedding element 4 is in this case by one of the shingles described above 9 a shedding machine, not shown, drivable. Instead of the displacement device 5 Of course, other types of linear mechanical guidance of elements can be provided with prism guide.

Out 1 is further evident that the guide means 11 is movable in a plane between the shedding elements 4 and that of two end positions of a stop motion 15 - 15.1 the reed teeth 7 runs closer to the shed elements 4 lies; this is the position of the reed teeth 7 during the weft insertion.

By this arrangement it follows that in the process sequence according to the invention, the effect threads 2 in the Rietlücken 4 one or can dive from these and for each cycle of the weaving machine, another predetermined within wide limits position in the weft direction 12 can take.

In this case, from one cycle of movement to the next, several Rietlücken 4 from the weft direction 12 shifted effect threads 2 be swept over. It is for the leadership of the effect threads 2 no mechanical elements in the area between the reed teeth 7 and the fabric edge 13 present, so that the weft insertion can proceed undisturbed. In the event that the weft insertion is to take place pneumatically, it is also readily possible, the front of the reed teeth 7 form channel-shaped in a known manner to the transport of the weft thread 3 to allow through this channel by means of air jet. Another aspect of the described embodiment of the invention is that for each movement cycle of the weaving machine can be specified by means of a mechanical or an electronic binding cartridge, whether the guide means 11 with the effect thread 2 during the weft insertion above (in the upper compartment) or below (in the lower compartment) of the weft thread to be inserted 3 located. A mechanical binding cartridge can in a suitable choice of eccentrics of a drive mechanism -. B. an eccentric - or consist in a punch card of a card-controlled dobby. Modern specialist imaging machines are known to be electronically generated and in the control device 8th the weaving machine stored pattern data driven. Along with one in the controller 8th preprogrammed individual displacement A of the effect thread 2 that between the change of the effect thread 2 From the top to the bottom, a wide variety of binding patterns of the additional impact effects can be achieved. It is known to the person skilled in the art to also store further information for each movement cycle of the loom in such a mechanical or electronic binding cartridge. These include, for example, the selection and presentation of one or more weft threads by means of a so-called color picker 19 , the weft density, the warp tension and the speed of the weaving machine. Special effects are also possible in that in a cycle of motion no weft 3 is selected and entered (see Tissue Pattern 4.1. ).

The 1a and 2 also show that the effect threads 2 from a thread stock 16 deducted in the back of the loom and by means of a deflection 17 about the shed elements 4 away the guidance 11 be supplied. To maintain the thread tension optionally a resilient element in the thread path can be arranged. In this area, the arrangement of a thread monitor, not shown, makes sense, the loom when breaking an effect thread 2 turns off.

The 1a , b show guidance 11 , which in this embodiment take the form of needles with eyelets 18 and have a needle point. One or more of these needles are attached at one end to a needle bar. This needle bar forms together with a linear guide the displacement device 5 , The needle-shaped guiding means 11 respectively. 11.2 also have thread eyelets 18 with round 18 , oval 18.2 or not shown slot-shaped opening through which the effect threads 2 be guided.

The different opening shapes allow an adaptation to different cross sections of the effect threads used 2 , It can be fine or coarse fiber or filament yarns in the range 11 tex to 10 000 tex are used. Even tape-like polypropylene, polyetylene or carbon fibers can be used as effect threads 2 be used. Also, the use of electrically conductive threads or light-conducting fibers as effect thread 2 is conceivable, so that a wealth of other effects can be generated with such tissues.

In the 1b It can be seen that the needle-shaped guide 11 in the area of the warp threads 1 facing tip is wedge-shaped; However, a conical tip is also conceivable. The conical or tapered region begins at a distance C from the thread eyelet 18 ,

In 1b is also visible that the upper ends of the reed teeth 7 in the vertical direction, a distance D from the warp threads of the upper compartment 1.1 at the point where the guide means 11 in its vertical movement, the warp threads of the upper compartment 1.1 crosses.

Finally, it can be seen that between the upper ends of the reed teeth 7 and the plane of motion in which the guiding means 11 moved, in the warp direction a - not drawn to scale - distance E is present.

The distances C, D and E depend on the warp density and the cross-section of the effect yarns used 2 from. In the present embodiment, C is chosen to be greater than or equal to D.

To the above-described hanging diagonal effect threads 2 when immersed in a Rietlücke 14 To avoid this, the distance E should be as small as the dimensions of the elements involved and the precision of the stop motion 15 - 15.1 just allow without collision.

To avoid this getting stuck also serves that the reed teeth 7 at the top at the exit of the Rietlücke 14 lying end have a tapering in the warp direction material cross-section, as shown in detail X.

3 shows diagrammatically the movements of some elements of a loom, which performs the method according to the invention. Shown are two cycles of movement of the loom over a total of 720 angular degrees Y of a weaving machine main shaft.

The curves F show the stroke of two opposing shed elements 4 , each of which has a bevy warp in the upper pocket 1.1 or sub-compartment 1.2 emotional. The weft insertion not shown in the diagram takes place in the phase in which the shed 1.1 . 1.2 is open. The curve H represents the stroke of a guide means 11 This is also the hub of the shedding element 4 is executed, with which the guide means 11 is moved vertically. In the prior art it is known that shedding machine and shingles drives 9 are designed so that for each shedding element 4 individually the vertical position in the weaving machine and the size of the stroke H or F can be adjusted. As described above, in certain embodiments of the shed forming machine, the timing between the movements F and H and the movement Y of the loom by the operator in the direction of travel can also be shifted individually. With 15 - 15.1 is the stop movement of the Webblatteinrichtung 10 . 7 . 7.1 referred to, which takes place between two weft entries.

The 4.1 to 4.4 , show various fabric patterns with additional weft effects, preferably with the embodiments of the loom according to the invention according to the 1 and 2 can be produced.

5 shows an embodiment of the weaving machine according to the invention with all the features of 1 and 2 in which, however, the means for vertically moving the guide means 11 by a shedding element 4 which is formed by its own independent drive 9.5 is driven.

For this purpose, any known to the expert electromechanical, pneumatic or hydraulic drives can be used.

In the presentation of the 5 also missing in the 1 shown prism guide as part of the displacement device 5 on the frame of the hive, as the shifting device 5 in the embodiment shown here not directly by a linear drive, but on the shedding element, z. B. a heald is moved in the weft direction.

6 shows the execution according to 5 in a plan view, in which it can be seen that the displacement device 5 over the shedding element 4 by means of a displacement drive 6.6 in the weft direction 12 is driven. In this case, the displacement drive 6.6 be stored on the machine frame. The subject picture element 4 - in this case, a heald - is used together with the shifting devices mounted on it 5 shifted in the direction of the shot.

6b shows in detail views from above and with a view in the warp direction by way of example, such as the displaceability of the shedding element 4 can be structurally enabled in the weft direction. An arrangement of reversing levers and connecting rods forms, in a manner known per se to a person skilled in the art, a linkage which is below a shedding element 4 is arranged. The linkage transmits the drive movements of a separate drive 9.5 so that the shedding element 4 performs a vertical, shedding motion H. The shedding element 4 is in the present example designed as a webschaftartiger frame, the multiple guide elements 11 wearing.

One of the side guides of the frame 4 is about the drive 6.6 in the weft direction with a displacement A drivable. The frame 4 is spring-loaded so that movement in both directions without play between displacement drive 6.6 and the frame 4 he follows.

The 7 and 8th show an embodiment according to 6 , but with two groups of guidance 11 . 11.7 Sliders 5 . 5.7 and displacement drives 6.6 . 6.7 , wherein each of the groups with another of the shedding elements 4 connected is. The planes in which each group of guide means moves can be arranged one behind the other in the warp direction such that the respective guide means 11 a group unhindered by the guide means 11.7 another group in the firing direction 12 let move.

There may also be several such groups with the same shedding element 4 to a system of leadership 11 . 11.7 , be connected in such a way that all guidance means 11 This system can be moved vertically synchronously.

Several such systems can finally each with different shedding elements 4 be connected and so independently driven vertically.

About a corresponding specification for the displacement drives 6 respectively. 6.7 can be with such an arrangement also different displacement paths A and B for the groups or systems of guide means 11 . 11.7 achieve.

The distance E refers in this case to the foremost, the reed teeth 7 closest level of movement.

The groups of leadership 11 . 11.7 But can also be arranged so offset in the weft direction against each other that all the guide means 11 . 11.7 in the same plane between subject matter means 4 and rear end position of the stopper movement 15 - 15.1 move (not shown).

The possibility of driving these groups in directions opposite one another in the direction of weft, if necessary also with different displacement paths A and B, makes it possible to achieve mirror-image, symmetrical or asymmetrical additional weft effects or entire fabric structures, as exemplified in US Pat 9.1. to 9.4 are shown.

LIST OF REFERENCE NUMBERS

0

tissue

1

warp

1.1

Shed, upper shed

1.2

Shed, lower shed

2

effect thread

3

weft

4

Shedding elements

5, 5.7

shifter

6, 6.6, 6.7

displacement drive

7

Webblattzähne

7.1

Riet Bund

8th

control device

9

Shedding drive

9.5

Independent drive

10

Webblattlagerung

11, 11.2, 11.7

guide means

12

weft direction

13

fabric edge

14

Riet gaps

15, 15.1

stop motion

16

yarn supply

17

deflecting

18, 18.2

eyelet

19

color Picker

A

Displacement group 5

B

Displacement group 5.7

C

Distance needle point

D

Distance weaving ends

e

Distance movement plane

F

Hub shedding elements

H

Hub guide means

Y

Weaving angle degrees

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0957191 [0003, 0006]
• US 3796234 [0007, 0008]
• US 20090272455 A1 [0007, 0008]
• EP 263392 [0009, 0009, 0010]
• CH 27499 [0011]
• DE 1230727 [0011]

Claims (17)

Method for producing a fabric ( 0 ) with additional weft effects through successive cycles of movement of a weaving machine, wherein a movement cycle consists of the steps - forming one of warp threads ( 1 ) limited shed ( 1.1 . 1.2 ), by shedding elements ( 4 ); - Positioning an effect thread ( 2 ) above a weft thread to be inserted ( 3 ); - shifting the effect thread ( 2 ) in the weft direction ( 12 ) by a predetermined displacement path (A) for each cycle of motion; - Positioning the effect thread ( 2 ) below the next weft thread to be inserted ( 3 ); - Entry of the weft thread ( 3 ) in the shed ( 1.1 . 1.2 ) in a firing direction ( 12 ); - striking the weft thread ( 3 ) to a fabric edge ( 13 ) by a Webblatteinrichtung ( 10 . 7 . 7.1 ), which is a stop movement ( 15 . 15.1 ) with two end positions, characterized in that the effect thread ( 2 ) in the positioning above the weft thread to be inserted ( 3 ) from one of reed teeth ( 7 ) the Webblatteinrichtung ( 10 . 7 . 7.1 ) formed unilaterally upwardly open Rietlücke ( 14 ) emerges and when positioning below the next to be entered weft thread ( 3 ) into another identically formed Rietlücke ( 14 ) is immersed by a guiding means ( 11 ) of the effect thread ( 2 ) in the vertical direction and in the weft direction ( 12 ) is moved in a plane between the shed elements ( 4 ) and that end position of the stop movement ( 15 . 15.1 ), which are closer to the shed elements ( 4 ) is arranged. A method according to claim 1, characterized in that between exhausts and immersion of the effect thread ( 2 ) over several Rietlücken ( 14 ) in the weft direction ( 12 ), with these gaps ( 14 ) one or more warp threads ( 1 ) are recovered. Method according to claim 1 or 2, characterized in that a plurality of effect threads ( 2 ) are moved and positioned simultaneously. Method according to one or more of claims 1 to 3, characterized in that during one or more movement cycles of the effect thread ( 2 ) not below the weft thread to be entered ( 3 ) is positioned. Method according to one or more of claims 1 to 4, characterized in that a plurality of effect threads ( 2 ) in the weft direction ( 12 ) are also displaced in opposite directions and / or with different displacement paths (A, B). Weaving machine with tray drives ( 9 ) for driving shed elements ( 4 ), by their vertical movement one of warp threads ( 1 ) limited shed ( 1.1 . 1.2 ) can be formed, with means for entry of a weft thread ( 3 ) in the shed ( 1.1 . 1.2 ) in a firing direction ( 12 ), with a Webblattein-direction ( 10 . 7 . 7.1 ) for striking the weft thread ( 3 ) to a fabric edge ( 13 ) by means of a stop movement ( 15 . 15.1 ), which has two end positions and with a displacement drive ( 6 ), in the firing direction ( 12 ) a displacement device ( 5 ), at which a guiding means ( 11 ) for an effect thread ( 2 ) is provided, as well as with a device for vertical movement of the guide means ( 11 ), whereby via the displacement drive ( 6 ) a displacement path (A) of the effect thread ( 2 ) in the weft direction ( 12 ) is predetermined for each movement cycles of the weaving machine, characterized in that reed teeth ( 7 ) at the Webblatteinrichtung ( 10 . 7 . 7.1 ), the unilaterally upwardly open Rietlücken ( 14 ) into which the effect thread ( 2 ) and that the guiding means ( 11 ) is movable in a plane which is between the shedding elements ( 4 ) and the end position of the stop movement ( 15 . 15.1 ), which are closer to the shed elements ( 4 ) is arranged. Loom according to claim 6, characterized in that the device for vertical movement of the guide means ( 11 ) is designed such that the displacement device ( 5 ) and the displacement drive ( 6 ) with one of the shedding elements ( 4 ) connected by one of the shingles drives ( 9 ) is driven by a shedding machine. Loom according to claim 6, characterized in that the device for vertical movement of the guide means ( 11 ) is designed such that the displacement device ( 5 ) and the displacement drive ( 6 ) with one of the shedding elements ( 4 ), which by its own independent drive ( 9.5 ) is drivable. Weaving machine according to one of claims 7 or 8, characterized in that the displacement device ( 5 ) via the shedding element ( 4 ) by means of one or more displacement drives ( 6.6 ) in the weft direction ( 12 ) is drivable. Weaving machine according to one or more of claims 6 to 9, characterized in that the displacement drive ( 6 ) is designed as an electric linear motor whose stator is in the shedding element ( 4 ) is integrated. Weaving machine according to one or more of claims 6 to 10, characterized in that a plurality of guide means ( 11 ) on a displacement device ( 5 ) are mounted. Weaving machine according to one or more of claims 6 to 11, characterized in that a plurality of groups of guide means ( 11 . 11.7 ), to each of which a displacement device ( 5 . 5.7 ) and a displacement drive ( 6 . 6.6 . 6.7 ) assigned. Weaving machine according to claim 12, characterized in that each of these groups or also each system consists of a plurality of such groups, each with a different one of the shedding elements ( 4 ) connected is. Weaving machine according to one of claims 12 or 13, characterized in that these groups in the weft direction ( 12 ) are also drivable in opposite directions and / or with different displacement paths (A, B). Weaving machine according to one or more of claims 6 to 14, characterized in that the guide means ( 11 ) with a thread eyelet ( 18 ) and one of the warp threads ( 1 ) facing the tip is formed, which has a conical or wedge-shaped contour. Weaving machine according to one or more of claims 6 to 15, characterized in that the reed teeth ( 7 ) at its upper end at the exit of the Rietlücke ( 14 ) end have a tapered in the warp direction material cross-section. Weaving machine according to one or more of claims 6 to 16, characterized in that the plane in which the guide means ( 11 ), seen in the warp direction of the upper ends of the reed teeth ( 7 ) is arranged at a distance (E) which is smaller than 3 mm, preferably smaller than 2 mm.

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