EP1954875B1 - Fixture for the reed of a seam weaving machine in order to alternatively roll in the seam weft thread by means of an inclined position of the combs or a movable roll - Google Patents

Description

Technical area

The invention relates to a holder for the reed of a seam loom for endlessly making a plastic fabric by means of a woven seam. For the production of the woven seam, a seam weaving shed is formed from seam warp threads, and stitching threads are inserted into the seam weaving shed and fed to the selvedge. The reed has Riete for Beischieben the seam weft threads on the selvage, which are pivotally mounted and press from the end of the fabric from which the respective seam weft thread protrudes as a warp thread fringe, successive against the zuzusiebenden seam weft thread. According to a first mode of operation, the rivets are staggerable in position by means of an inclination rail and a pressure rail such that the points at which the rivets contact the seam weft yarn to be added lie approximately on a straight or slightly curved line whose distance from the selvage transversely across the reed changes constantly.

State of the art

Technical plastic fabrics for uses where an absolutely uniform surface texture of the fabric is important, especially in flat-woven plastic papermaking screens, are made endless by a woven seam, as is the case EP-A-0 236 601 is known. To produce a woven seam, warp threads are exposed at a length of, for example, 15 cm at the fabric ends to be joined together by removing the weft threads in this area, see FIG. DE-A-103 30 958 (= WO-2005/005718 ). From these warp thread fringes and the weft threads removed from the fabric, the so-called woven seam is then formed, in which the original fabric weave is exactly restored. For this purpose, a Nahtwebfach is spanned from the removed weft threads, the removed weft threads act as seam warp threads. In this Nahtwebfach be alternately from the two ends of the fabric by means of pull-through grippers (s. EP-A-0 597 494 ) the warp thread fringes are entered as seam weft threads. The Warp yarn fringes, ie the stitch weft yarns, and the removed weft yarns, ie the seam warp yarns, are usually monofilaments of 0.1 to 0.5 mm in diameter, and the production of the woven seam takes place after thermosetting of the fabric, so that the threads already the respective tissue binding corresponding corrugation or cranking have. In order to obtain a woven seam which has a high tensile strength and which does not differ from the rest of the fabric in the patterning of the surface which is decisive for the marking in the paper, the stitching warp threads and the lap yarns must fit together with their offsets, as in the fabric, so that a positive connection results. The interlocking joining of the suture warp yarns and weft weft yarns according to their offset is achieved, inter alia, by the reed not simultaneously butting the seam weft yarns along the entire length but progressively feeding the seam weft yarns from the fabric end (root location) through the seam weave become.

A reed, which allows such a successive Beischieben the seam weft threads is in the DE-U-81 22 448 described. The reed is pivotable in an approximate to the selvedge working position. The rivets pivotably mounted on an axle are retained by a rubber strip away from the selvage. A roll which can be moved transversely over the reed on a guideway presses the reed against the elastic seam of the rubber strip one after the other against the seam weft thread. Starting from the end of the fabric at which the seam weft thread protrudes as a warp fringe, the roll is moved over the entire seam width along the row of stitches for each stitching operation.

The same goal will be after the EP-A-0 043 441 achieved by a rotatable needle roller having a plurality of flexible elastic needles, which are arranged in helical rows of needles. Another possibility is described in this document, the Beischieben the seam weft yarns by means of Z-shaped needles, which are arranged in a guide bed next to each other and individually axially displaceable. With their front Z-end, the needles engage in the shed. By means of a backdrop, the Z-shaped needles are pushed one after the other against the selvage, so that the seam weft thread is progressively fed from its exit point out of the fabric end in a wave motion.

Out EP-A-0 586 959 is a holder for the reed of a seam loom of the type mentioned above, in which the Riete so staggered in position in that the points at which the rivets touch the seam weft thread to be added lie approximately on a straight or slightly curved line, the distance from the selvedge increasing from the exit end of the weft thread from the fabric end. The weaving process can thereby be accelerated, since the staggering of the reed already satisfies the movement of the sley in order to successively feed the suture weft thread starting from its exit end out of the fabric.

While that's out DE-U-81 22 448 Known method, in which the reeds are pressed by means of a roller passing them in succession against the zuzuschiebenden stitch weft thread, even with very complex fabrics can be used, can from EP-A-0 586 959 known, faster method in which the rivets are staggered arranged on the sley, are not used in very complex fabrics, especially in some structured fabrics. Structure-bound tissues are multi-layered tissues in which the binding weft is integrated into the tissue structure. When manufacturing a woven seam, a sley with staggered rivets is first prepared according to EP-A-0 586 959 used and then occur during the Nahtwebprozesses too many weaving errors and machine downtime, so it is very tedious and time consuming to switch to the process in which a batten with continuous role according to DE-U-81 22 448 is used. For the conversion namely the entire batten must be removed and replaced by a corresponding other batten. In doubtful cases, therefore, the continuous roll method is used, although the staggered roll method would save 20 to 30% of the time.

Presentation of the invention Technical task

The invention is based on the object, in a seam weaving process, the change between the Nahtwebverfahren, where worked with staggered rivets, and the method in which to work with a continuous role to simplify.

Technical solution

According to the invention, this object is achieved in that in a holder of the type mentioned in a roll is provided on a guide track on the Width of the reed is movable to successively pivot the rivets for working in a second mode of operation towards the selvedge, and that the skew bar or the pressure bar for working in the second working mode of the rivets are removable.

Advantageous effects

The skew bar and the pressure bar act on the reeds with opposite torques so that together they determine the position of the reeds. By the torque generated by the skew bar, the reeds are urged so that their upper ends are pushed away at one end of the reed to the selvedge and at the other end of the selvage, while the pressure bar the upper ends of the reeds to the selvedge. Suitably, both strips on the back of the reeds, which is the side facing away from the selvedge, arranged, wherein the skew bar acts on the reeds below the axis and the pressure bar acts on the reins above this axis. The skew bar and the pressure bar are both mounted on the bracket so that they are pivotable in an approximately horizontal plane. Suitably, both are rotatably mounted in the middle about a vertical axis and are applied to the two lateral ends of adjusting devices, for. B. pneumatic tilt cylinders or contact pressure cylinders. The skew cylinders can be controlled to assume a particular extended position while the apply pressure cylinders are controlled to apply a given compressive force.

Preferably, the application pressure cylinder are driven so that the application pressure cylinder on the side of the root site about 50% more force than the application pressure cylinder on the opposite side, it being assumed that the pressure bar is mounted in the middle.

During forward movement of the sley, the reeds push the suture weft thread to be inserted against the selvedge. As soon as the seam weft thread touches the selvage, it presses the reed a little back against the force of the pressure squeegee. In order to allow this rearward pivoting movement of the Riete, the pressure bar is mounted so that it can escape to the rear. The normally existing pivot bearing in the middle of the pressure bar is mounted on a slider, which allows movement in the direction of the Webladenbewegung. At the same time the rear is reached by the slider when hitting the rivet End position sensed to control the stepwise backward movement of the seam weaving machine along the fabric ends.

Previously, the first working mode was described in which the rivets are tilted. The holder according to the invention can be rebuilt in a few steps so that the seam loom can work in a second mode, in which the seam weft threads are pushed by means of a traversing role, as can be seen from the DE-U-81 22 448 is known and described above. The role is driven on a guideway across the width of the reed to pivot the rivet successively to the selvedge out. The guide track of the roller is preferably arranged on the front side of the holder, so that the roller acts on the reed below the axle. The rivets are held by a U-rail which extends across the width of the batten in an approximately vertical position. The U-rail is arranged approximately at the level of the axis, so that the upper leg of the U-rail above the axis and the lower leg of the U-rail below the axis rests against the rivets. The upper leg of the U-rail is provided with a sponge rubber strip, and by the role of the rivets are successively pivoted forward and pressed into the foam rubber strip. Depending on the arrangement of the skew bar and the pressure bar disturb these when working in the first mode and must be removed or at least retracted from the rivets.

For the change from the first working mode to the second working mode, the skew bar and / or the pressure bar, as far as they are disturbed, removed or dismantled from the rivets, the apply pressure and tilt cylinders or other actuating devices are switched without pressure and is the U-rail mounted.

For changing from the second working mode to the first working mode, the U-rail is removed and the roller is moved to a parking position at the edge of the holder. Furthermore, the skew bar and the pressure bar are brought into their working position and the skew and set pressure cylinders or other actuating devices are pressurized.

Preferably, the holder is constructed so that the skew bar and the pressure bar act on the rivets on the back, namely the skew bar below the axis and the pressure bar above the axis, and that the roller acts on the rivet on the front below the axis and the U Rail rests against the front of the Riete, with the above the axis abutting leg of the U-rail has a foam rubber strip. For the change from the first working mode to the second working mode then only the skew bar needs to be removed and the U-rail to be screwed. For the change from the second working mode to the first working mode, the U-rail is unscrewed, the roller is moved to a lateral parking position and the inclination bar is installed. The pressure bar is present in this embodiment of the invention in both working modes: as already mentioned, it has the function in the first working mode, the Riete against the zuzuschiebenden stitch weft thread and thus press this against the selvedge, and it also has the function, the stepwise backward movement to control the seam loom. In the second working mode, it has no function and is moved back so far that it no longer rests against the rivets.

The sley usually consists of a hinged at the bottom leg, on which a cross member or Webladenkopf is arranged, which in turn carries the reed. The Webladenkopf is preferably arranged by means of a hinge at the upper end of the leg, wherein the hinge axis is parallel to the pivot axis of the sley.

In the first working mode, this joint is blocked, so that the Webladenkopf is rigidly connected to the leg of the batten.

In the second working mode, however, the web loading head is pivotable. By means of adjusting devices, e.g. pneumatic cylinder, the Webladenkopf is pressed with an adjustable force against a stop, so that the reed is in its normal position. In the basic position, the reed is aligned approximately parallel to the leg of the batten. In the second mode of operation, the angle at which the shuttle head pivots rearwardly upon striking the stitch weft yarn is sensed, and according to this angle, the stepwise backward movement of the seam weaving machine along the fabric ends is controlled in accordance with the seam advance.

The forces applied by the pull-through gripper and the pressure cylinders are set as low as possible in order to achieve the positive connection between the seam weft thread and the seam warp threads. A particularly preferred mode of operation in the first mode of operation is that the tension exerted by the pull-through gripper on the stitch weft thread to be attached and the force applied to the pressure rail by the apply pressure cylinder are not constant during the rolling in or shuffling of the stitch weft thread. Preferably, these forces are higher at the beginning, while the seam weft thread is pressed, for example, into the first three seam warp threads, and are then reduced. These increased forces are useful because the insertion of the stitching weft yarn at the so-called root point, which is the point from which it emerges from the fabric end as Kettfadenfranse is particularly difficult and experience requires higher forces. When the seam weft yarn is engaged with the first approximately three warp yarns, it is expedient to lower the tension applied by the pull through gripper, in order to avoid that the curl or bend of the seam weft yarn is partially pulled smoothly. In general, the tension applied by the pull-through gripper is reduced to about half, and the force applied by the pressure cylinders is also reduced to about one-half. As already mentioned, the application pressure cylinder on the root side preferably brings in about 50% more force on the pressure strip than the application pressure cylinder on the other side. The reduction of the applied forces requires a short period of time, and therefore, the sley preferably remains stationary during this period of time after the suture weft thread has been engaged with the first suture warp threads.

This reduction in force during the insertion of a lap weft thread in a seam weaving machine, in which the seam weft thread is introduced successively by means of an inclined reed, is particularly useful in the operation of the seam loom with the holder according to the invention. However, this method of operating a seam loom is also suitable for the operation of a seam loom, which can only be operated in the first working mode ( EP-0 586 959 ), suitable and advantageous.

Brief description of the drawings

• Fig. 1 in einer Seitenansicht die gesamte Weblade einschließlich des Antriebs;
• Fig. 2 die Halterung der Riete in einer räumlichen Darstellung von hinten oben;
• Fig. 3 die Halterung der Riete in einer räumlichen Darstellung von vorne oben;
• Fig. 4 die Halterung in einer Seitenansicht, hergerichtet für den ersten Arbeitsmodus und
• Fig. 5 die Halterung in einer Seitenansicht, hergerichtet für den zweiten Arbeitsmodus.

An embodiment of the invention will be explained below with reference to the drawing. Show it:

• Fig. 1 in a side view of the entire batten, including the drive;
• Fig. 2 the holder of the Riete in a spatial representation from behind the top;
• Fig. 3 the holder of the Riete in a spatial representation from the top front;
• Fig. 4 the holder in a side view, prepared for the first working mode and
• Fig. 5 the bracket in a side view, prepared for the second working mode.

Way (s) for carrying out the invention

In Fig. 1 a sley 10 is shown, which is pivoted in the usual way by a linear motor 12 as Webladenantrieb. The sley 10 consists of a leg 14 which is pivotable at the lower end in a bearing and at the top of a Webladenkopf 16 carries, wherein the drive rod of the linear motor 12 is hinged just below the Webladenkopfes 16 on the leg 14. At the lateral ends of the Webladenkopfes 16 are up from bearing supports 18, in which an axle 20 removable by means of an axle rail 21 (FIGS. Fig. 4 ) is attached. On the axis 20 Riete 22 are lined up, which form the reed in its entirety. For the sake of clarity, however, only one of the Rieten is shown. The rivets 22 have at the bottom of a hole with which they are threaded on the axis 20. Through spacers between them they are kept at the distance, which is determined by the thread count of the fabric.

As in Fig. 2 can be seen on the back of the Webladenkopfes 16, which faces the linear motor 12, a skew bar 24 which extends over almost the entire width of the Webladenkopfes 16, pivotally mounted about a vertical axis, wherein the pivot point in the middle of the skew bar 24th located. Tilting cylinders 26 are arranged on the two lateral bearing supports 18 and act on the lateral ends of the inclined position bar 24 (FIG. Figures 2 and 4 ). The extension of the skew cylinder 26 is adjustable. The skew bar 24 is disposed below the axle 20 so as to engage the rivets 22 below the axle 20.

About the skew bar 24 and above the axis 20, a pressure bar 30 is similar to the inclined position bar 24 rotatably mounted about a vertical axis. The pressure bar 30 also extends over the entire width of the Webladenkopfes 16. On the bearing supports 18 also apply pressure cylinder 32 are arranged, which act on the pressure bar 30 at their lateral ends. The pressure bar 30 is mounted in the middle on a slider 34 which is displaceable in the longitudinal direction, that is, in the direction of the weaving movement, in a guide. The front of the pressure bar 30, which acts on the reed 22, is provided with a rubber pad 36.

By means of the skew bar 24 and the pressure bar 30, the seam loom is operated in a first working mode. For explanation, it is assumed that first a seam weft thread projecting from the right fabric end as a warp yarn fringe and entered into the seam weaving shed by means of a pull-through gripper is now rolled by means of the sley and to the selvedge should be pushed. The points at which the rivets 22 strike at the selvage lie approximately in the middle of the length of each of the rivets 22. These points always lie on a straight or slightly curved line, the so-called attack line. When the sley 10 is at its rear reversal point, the left pitch cylinder 26 is extended and the right pitch cylinder 26 retracted. The skew bar 24 thereby rotates slightly clockwise viewed from above. Since the skew bar 24 engages below the axis 20 on which the rivets 22 are threaded, the portion of the reed that is above the axis 20, and thus the stop line, moves in the opposite direction and the reed is deformed so that the rivet 22 on the right side is slightly forward and the rivet on the left side is slightly tilted backwards. The rightmost rivet 20 hits the seam weft thread first and presses it against the selvage. At the rear reversal point of the sley 10, the pressure in the right landing pressure cylinder 32 is increased, so that the seam weft thread is pressed into the shed immediately after its exit from the fabric end with particularly great force. The pull-through gripper still applies to the seam weft thread the relatively high pull-through tension with which he has pulled the seam weft thread through the seam weave. Due to the high application pressure exerted by the application pressure cylinder 32 on the seam weft thread and the high pull-through tension exerted by the pull-through gripper, it is ensured that the crimps of the seam weft thread fit and exactly with the cranks of the first, ie the outermost right seam warp threads mesh. As mentioned earlier, fabric wefts are used as suture warp yarns and fabric warp yarns as suture weft yarns after heat setting of the fabric so that the yarns have a permanent bend or undulation. So that the woven seam in the weave pattern does not differ from the weave, the seam warp threads and the stitch weft threads with their offsets must fit together again according to the weave weave. The production of this engagement between the stitch weft thread and the sewing warp threads is particularly critical in the first three seam warp threads. In order to engage the seam weft yarn with the first three seam warp yarns, the pressure in the apply pressure cylinders 32 is approximately doubled. If the engagement is made with the first three suture warp threads, the pressure is reduced to normal, ie about halved. During the time required for the pressure reduction, the sley 10 stops. This time span is for example about 50 ms. At the same time, the tension exerted by the pull-through gripper is reduced from the so-called pull-through tension to the holding or rolling-in tension.

While the extreme right rivets 22 push the seam weft thread into the seam warp yarns, the sley 10 continues to move. The pressure in the apply pressure cylinders 32 is chosen so that the pressure bar 30 is pushed backwards by the rivets 22, which have reached the selvedge, i. swiveled in the selected example in a clockwise direction. As a result, from right to left, the reed 22 successively presses on the sewing weft thread to be attached, so that it is finally pressed completely onto the selvedge and engages with the sewing warp threads. In general, the next stitching weft thread to be attached is a warp thread fringe protruding from the left fabric end. The skew cylinders 26 and the apply pressure cylinders 32 are therefore now mirror-inverted, i. now, the right skew cylinder 26 is extended and the pressure in the left apply cylinder 32 is increased to the pressure necessary to push the seam weft yarn into the first left seam warp yarns.

Depending on the horizontal distance of the bearing of the sley 10 of the selvage, the slider 34, on which the pressure bar 30 is mounted, moved more or less to the rear after Beischieben a stitch weft yarn. The rear end position reached by the slider 34 when striking the rivet 22 is sensed by a first sensor 35. When the displacement of the end position exceeds a predetermined amount, the seam loom is moved backward a predetermined step away from the selvedge. As a result, the progressive selvedge is taken into account. Since the two ends of the fabric are firmly clamped, it is the seam weaving machine that must be moved in accordance with the seam progress.

The seam weaving process after this first working mode is very fast, but can not be used on all fabrics. For very complex fabrics, especially textured fabrics, it is sometimes not applicable. If too many flaws occur in the endless weaving of a fabric and therefore the seam weaving machine stops too often, it is possible to switch to a second working mode, with which almost all fabrics can be made endless. For this purpose, a reconstruction of the sley 10 is necessary. In the FIGS. 1 to 3 are mounted on the sley 10 both the components that are necessary for the first working mode, as well as those that are necessary for the second working mode. Fig. 4 on the other hand shows the batten 10 with the components that are necessary for the first working mode, and Fig. 5 shows the sley 10 with the components that are necessary for the second working mode, wherein each of the disturbing components of the other working mode are removed or moved from the working position.

For the conversion of the sley 10 from the first to the second working mode, the rivets 22 may remain on the axis 20, the skew bar 24 is degraded, and a rail 40 with U-profile is grown in front of the rivets 22, also the apply pressure cylinder 32 are depressurized switched, so that the pressure bar 30 no longer rests against the back of the rivet 22. As will be explained later, the fixation of a joint 64 between the web loading head 16 and the leg 14 for the second working mode is also solved. The U-rail 40 is screwed about at the height of the axis 20 to the axle rail 21, to which the axis 20 is secured with the rivets 22. The lower leg 42 of the U-profile of the rail 40 is located below the axis 20 of the rivets 22, and the upper leg 44 of the U-profile is above the axis 20 of the rivets 22 at. The upper leg 44 carries a sponge rubber strip, not shown, which is inserted into a groove 46 on the back of the upper leg 44.

Below the lower leg 42, a guide track 50 is provided on the Webladenkopf 16, which extends over the entire width of the Webladenkopfes 16 and in which a roller 52 is guided. In the second mode of operation, the roller 52 below the lower leg 42 urges the lower ends of the rivet 22 so that the upper, much longer portion of the rivet 22 is pivoted forward while being pressed into the sponge rubber strip on the back of the upper leg 44 of the rail 40 becomes. When the roller 52 in the guideway 50 is moved over the front of the shuttle head 16, it sequentially pushes the rivet 22 forward. The roller 52 is supported by a sliding in the guide track 50 slider which is fixed to a toothed belt 54 which is guided over two toothed pulleys 56, which are arranged laterally at the bearing supports 18. The left toothed belt pulley 56 is driven by a stepping motor 58 ( Fig. 3 ). In the first working mode, the roller 52 is not needed and is therefore driven in a lateral parking position.

To Beischieben the seam weft threads in the second mode of operation, the sley 10 is pivoted to its front end position in which the rivet 22 whose attack line is aligned in the second mode parallel to the selvedge, stand directly in front of the selvage or zuszusiebenden seam weft thread already touching. The sley 10 remains for a short moment in its front end position, during which the roller 52 is pulled along the guide track 50 and thereby successively swings the individual rivets 22 briefly so that they can roll the suture weft thread into the shed. After the passage of the roller 52, the individual rivets 22 are swung back by the sponge rubber strip in the groove 46 back to its original position. The roller 52 thus causes a continuous wave in the rivets 22.

Before the lower ends of the rivet 22, a sheet metal strip 60 is arranged, which extends over the entire width of the Webladenkopfes 16 and is secured to the lower leg 42. As a result, the roller 52 does not act directly on the lower ends of the rivet 22, but initially deflects only the metal strip 60, which transmits this deflection to the rivet 22. Due to the elasticity of the sheet metal strip 60, the shape of the continuous wave can be influenced. The more elastic the metal strip 60, the steeper the flanks of the shaft. If a shallower wave is desired, then a thicker sheet metal strip 60 of lesser elasticity can be used, or two metal strips 60 can be inserted.

How to get in Fig. 1 detects, the leg 14 of the sley 10 has approximately in the middle of its length, a joint 62. By means of this joint 62, the angle can be adjusted, take the Webladenkopf 16 and thus the Riete 22 against the selvedge.

By means of the above-mentioned joint 64 of the Webladenkopf 16 at the upper end of the leg 14 is articulated ( Fig. 3 ). The hinge 64 is effective only in the second working mode. By two pneumatic pressure cylinder 66, 68 of the web loading head 16 can be tilted. The left pressure cylinder 66 is dimensioned smaller and is used in the second mode of operation to control the force with which the reed is pressed against the selvedge. A second sensor 69 is mounted on the leg 14 of the sley 10 and senses the angle of inclination of the weaving head 16 about the hinge 64. The second sensor 69 detects the end position reached under the force of the left pressure cylinder 66, thereby controlling the stepwise backward movement of the seam loom.

The more powerful right-hand pressure cylinder 68 also serves in the second mode of operation to support the Webladenkopf 16 at the rear reversal point of the weaving movement, so that this and the Riete 22 does not hit in the harness. In the backward movement of the sley 10, the right pressure cylinder 68 is therefore pressurized.

On the underside of the web loading head 16, an angle 70 is arranged, the vertical arm is supported against the front of the leg 14 when the reed is aligned parallel to the leg 14, and thereby prevents the Webladenkopf 16 tilts forward. In the first mode of operation, the hinge 64 is fixed by the angle 70 is firmly connected by means of a threaded bolt 72 with the leg 14 ( Fig. 3 and 4 ). The pressure cylinders 66, 68 are thereby ineffective in the first working mode. For the second mode of operation, however, the threaded bolt 72 is removed ( Fig. 5 ), so that the joint 64 becomes effective.

In a recess of the U-rail 40, a thrust block 74 is arranged, which serves in the first working mode to bend the axis 20, as shown in the Fig. 5 and 6 of the EP-0 586 959 is shown to adapt the shape of the reed to the curvature of the selvedge.

List of reference numbers

10

batten

12

linear motor

14

leg

16

Webladenkopf

18

bearing supports

20

axis

21

Achsschiene

22

Riete

24

Tilt bar

26

Tilt cylinder

30

print bar

32

Application pressure cylinder

34

slide

35

first sensor

36

rubber pad

40

U-rail

42

lower thigh

44

upper leg

46

groove

50

guideway

52

role

54

toothed belt

56

Timing pulley

58

stepper motor

60

metal strip

62

joint

64

joint

66

left impression cylinder

68

right impression cylinder

69

second sensor

70

angle

72

threaded bolt

74

thrust block

Claims (7)

1. Mount for the reed of a seam weaving machine for joining two opposite ends of a synthetic fabric by means of a woven seam, for the production of which a seam shed is formed from seam warp threads, and seam weft threads, which project from the fabric ends as warp fringes, are inserted into the seam shed and pushed against the selvedge, wherein the reed has combs (22) for pushing the seam weft threads against the selvedge, with a support device (20) for the pivotable mounting of the combs (22), with an inclination bar (24) and a pressure bar (30), which are arranged at a distance from the support device (20) and exert opposite torques on the combs (22), and with adjustment devices (26, 32) for adjusting the inclination bar (24) and the pressure bar (30) at angles relative to the support device (20) in order, for operation in a first mode of operation, to stagger the position of the combs (22) by means of the inclination bar (24) and the pressure bar (30) such that the points, at which the combs (22) touch the seam weft thread to be pushed, lie approximately on a straight or slightly curved line, the distance of which from the selvedge changes constantly across the reed, and such that the combs (22) press successively and starting from the fabric end, from which the seam weft thread to be pushed projects as warp fringe, against the latter and push it against the selvedge, characterized in that a roll (52) is provided which can be moved on a guide track (50) across the width of the reed in order to pivot the combs (22) successively towards the selvedge for operation in a second mode of operation, and in that the inclination bar (24) or the pressure bar (30) can be moved away from the combs (22) for operation in the second mode of operation.
2. Mount according to claim 1, wherein, in the first mode of operation, the combs (22) abut against the pressure bar (30), which transmits the force necessary for the pushing to the combs (22).
3. Mount according to claim 2, wherein the pressure bar (30) can be pivoted about a vertical axis and is mounted displaceable in the direction towards the support device (20) of the combs (22) and away from it.
4. Mount according to one of claims 1 to 3, wherein the inclination bar (24) acts on the combs (22) on the rear side below the shaft (20), the pressure bar (30) acts on the combs (22) on the rear side above the shaft (20), wherein a U-shaped rail (40) is arranged on the front side of the combs (22) and, with its lower side (42), acts on the combs (22) below the shaft (20) and, with its upper side (44), acts on the combs (22) above the shaft (20), wherein, in the first mode of operation, the U-shaped rail (40) is moved away and, in the second mode of operation, the inclination bar (24) is moved away and the adjustment devices for adjusting the pressure bar (30) are attached without pressure.
5. Mount according to one of claims 1 to 4, wherein a rubber strip can be arranged across the reed and wherein, in the second mode of operation, the combs (22) abut against the rubber strip and are pressed into it by the roll (52).
6. Sley of a seam weaving machine for joining the two opposite ends of a synthetic fabric with a mount for the reed according to one of claims 1 to 5.
7. Seam weaving machine with a mount according to one of claims 1 to 5, wherein the seam weaving machine further has a draw-through gripper for inserting the seam weft thread into the shed and a control means, wherein the force with which the draw-through gripper pulls the seam weft thread and the force with which the bearing pressure cylinders act on the pressure rail are reduced after the seam weft thread has been brought into engagement with the approximately first three seam warp threads.

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