BE1024545B1 - Device and method for catching and stretching weft threads - Google Patents

Abstract

Device for catching and stretching a weft thread (3) inserted into a weaving section of a weaving machine, comprising a weft thread stretching device (28), a guide device (25), and a weft thread holding device (27) containing a first suction nozzle (11) stationary on the weaving machine is arranged in line with an insertion path, which first suction nozzle (11) has an opening (23) directed towards a fabric edge (14) of the fabric (2) and is adapted to have a suction flow parallel to the stop line (10) so that after the weft thread (3) has been struck, a free end of said weft thread (3) held in the first suction nozzle (11) extends at least substantially parallel to the stopping line (10). A weaving machine with such a device, and a method for catching and stretching weft threads.

Description

(30) Priority data:

(73) Holder (s):

PICANOL NV 8900, IEPER Belgium (72) Inventor (s):

GHESQUIERE Marnix 8930 LAUWE Belgium (54) Device and method for capturing and stretching weft threads (57) Device for capturing and stretching a weft thread (3) inserted in a weaving compartment of a weaving machine, comprising a weft threading device (28), a guiding device (25), and a weft thread holding device (27) containing a first suction nozzle (11) mounted stationarily on the weaving machine in an extension of an insertion path, said first suction nozzle (11) pointing an opening (23) towards a fabric edge ( 14) of the fabric (2) and adapted to generate a suction flow parallel to the abutment line (10), so that after the weft thread (3) has been struck a free end of said weft thread (3) is held in the first suction nozzle (11) at least extends substantially parallel to the stop line (10). A weaving machine with such a device, and a method for catching and stretching weft threads.

BELGIAN INVENTION PATENT

FPS Economy, K.M.O., Self-employed & Energy

Intellectual Property Office

Publication number: 1024545 Filing number: BE2016 / 0141

International classification: D03D 47/30 Date of issue: 05/04/2018

The Minister of Economy,

Having regard to the Paris Convention of 20 March 1883 for the Protection of Industrial Property;

Having regard to the Law of March 28, 1984 on inventive patents, Article 22, for patent applications filed before September 22, 2014;

Having regard to Title 1 Invention Patents of Book XI of the Economic Law Code, Article XI.24, for patent applications filed from September 22, 2014;

Having regard to the Royal Decree of 2 December 1986 on the filing, granting and maintenance of inventive patents, Article 28;

Having regard to the application for an invention patent received by the Intellectual Property Office on 02/09/2016.

Whereas for patent applications that fall within the scope of Title 1, Book XI, of the Code of Economic Law (hereinafter WER), in accordance with Article XI.19, § 4, second paragraph, of the WER, the granted patent will be limited. to the patent claims for which the novelty search report was prepared, when the patent application is the subject of a novelty search report indicating a lack of unity of invention as referred to in paragraph 1, and when the applicant does not limit his filing and does not file a divisional application in accordance with the search report.

Decision:

Article 1

PICANOL NV, Steverlyncklaan 15, 8900 IEPER Belgium;

represented by

CARDOEN Marnick, Steverlyncklaan 15, 8900, YPRES;

a Belgian invention patent with a term of 20 years, subject to payment of the annual fees as referred to in Article XI.48, § 1 of the Code of Economic Law, for: Device and working method for catching and stretching weft threads.

INVENTOR (S):

GHESQUIERE Marnix, Steenovenstraat 4, 8930, LAUWE;

PRIORITY:

BREAKDOWN:

Split from basic application:

Filing date of the basic application:

Article 2. - This patent is granted without prior investigation into the patentability of the invention, without warranty of the Merit of the invention, nor of the accuracy of its description and at the risk of the applicant (s).

Brussels, 05/04/2018,

With special authorization:

BE2016 / 0141

Apparatus and method for catching and stretching weft threads.

Technical field and state of the art.

The invention relates to a device for catching and stretching weft threads, a weaving machine provided with such a device, and a method for catching and stretching weft threads.

For catching a leading end of a weft thread inserted into a weaving compartment (hereinafter also referred to as inserted weft thread) and for holding the inserted weft thread at a desired tension, the use of so-called prior art catching threads has been used. known. The catching threads run parallel to the warp threads next to the weaving section and form a separate weaving section that can be closed earlier than the normal weaving section by associated shed-forming means, to bind the inserted weft thread at an appropriate moment and with an appropriate tension. Keeping the end portions of the inserted weft thread prevents the weft threads, which extend beyond the fabric edge after the insertion, from being retracted into the fabric.

WO 2013/117564 A2 describes an apparatus for capturing and stretching a weft thread inserted into a weaving compartment of a weaving machine to avoid capturing threads. The device includes a weft threading device stationary mounted on the weaving machine in an extension of an insertion path of the weft thread for capturing the front end portion

BE2016 / 0141 of the inserted weft thread and the stretching of the caught weft thread, a weft thread holding device mounted stationarily on the weaving machine in an area of the stop line for holding the front end portion of at least one struck weft thread, and a movable guide device attached to the weaving drawer is arranged for movement with the weaving drawer for guiding the captured weft thread towards the weft thread holding device. The weft thread holding device described in WO 2013/117564 A2 comprises a suction nozzle with a suction opening directed towards the reed, on which suction opening an entrance slot is provided.

Summary of the invention.

It is an object of the invention to provide a device for catching and stretching weft threads, a weaving machine provided with such a device and a method for catching and stretching weft threads, wherein the weft thread is kept under sufficient tension until the free end of the weft thread is cut.

This object is solved by the weft yarn catching and stretching device, the weaving machine containing such a device and the method using such a device having the features of claims 1, 12 and 13. Preferred embodiments are described in the dependent conclusions defined.

In a first aspect, a weft catching and stretching device is introduced into a weaving compartment provided with a weaving machine, the device comprising a

BE2016 / 0141 weft threading device stationary mounted on the weaving machine in an extension of an insertion path of the weft thread for capturing the front end portion of the inserted weft thread and stretching the captured weft thread, a weft thread holding device stationary on the weaving machine in an area of an abutment line is provided for holding the front end portion of at least one impacted weft thread, and a movable guide device mounted on a weaving drawer for movement with the weaving drawer for guiding the captured weft thread toward the weft holding device, a first suction nozzle being provided as the weft thread holding device, said first suction nozzle having an opening directed to a fabric edge of the fabric and adapted to generate a suction flow parallel to the abutment line, so that after the weft thread has been struck, a free end of said weft thread is held in the e first suction nozzle extends at least substantially parallel to the stop line.

The opening of the first suction nozzle arranged in the area of the stop line faces the fabric edge of the fabric. In other words, the opening is directed at least primarily toward a guide channel of the reed when the reed is in its forward position toward the abutment line. As a result, the weft threads held by the first suction nozzle at least mainly extend in a straight line in line with the stop line. This permits good stretching and, if required, an advantageous transfer of the weft threads to a margin insertion device, a cutting device and / or catching threads arranged on the arrival side of the weaving compartment.

BE2016 / 0141 In preferred embodiments, the first suction nozzle is a ring-jet suction nozzle. With a ring-jet suction nozzle, a suction effect is achieved by blowing past the inlet of the suction nozzle. Preferably, the diameter of the inlet is chosen to be large enough to allow weft threads to easily pass through the suction nozzle.

In one embodiment, the first suction nozzle can be mounted in an adapted position on the weaving machine in the region of the stop line. In preferred embodiments, the first suction nozzle is adjustable in its height position perpendicular to a woven fabric as well as in its position towards and away from a stop line. Here, the position can be adjusted by an operator of the weaving machine, for instance depending on a weft thread thickness and / or a type of weave weave and / or an arrangement of an edging device.

In one embodiment, the guide device for moving the weft threads to the first suction nozzle is a blower. In other embodiments, a reed functions as the guiding device. In preferred embodiments, the guide device includes a hook-shaped guide element, for example, a hook-shaped guide element provided with a notch that has inwardly converging sidewalls for receiving the weft thread. In one embodiment, the guide device with a hook-shaped guide element further comprises an adaptable. stopper for adjusting the depth of the notch as described in WO 2013/117564 A2, the contents of which are hereby incorporated by reference.

BE2016 / 0141 In one embodiment, a weft detector is provided on the weaving drawer, which functions as a guiding device with a guiding element for guiding the captured weft thread towards the first suction nozzle. The number of elements which is arranged on the weaving drawer and which has to be moved during tightening can hereby be reduced. However, when, for example, abrasive weft threads are woven, an additional guide element is provided. In preferred embodiments, the additional guiding element is disposed downstream of the impact detector in the insertion direction.

In preferred embodiments, the weft thread stretching device includes a second suction nozzle, in particular a ring-jet suction nozzle, the opening of which faces a guide channel of the reed when the reed is in its posterior position away from the abutment line. In preferred embodiments, the second suction nozzle can also be mounted on the weaving machine in an adjustable position. Here, the position can be adjusted by an operator of the weaving machine, for instance depending on a weft thread thickness and / or a type of weave weave and / or a type of guiding device used.

In preferred embodiments, the first suction nozzle and the second suction nozzle are connected to a control unit, the second suction nozzle being controlled by the control unit so that the second suction nozzle is activated upon insertion of a weft thread into the weaving compartment to catch the inserted weft thread and is deactivated at or shortly after the captured weft thread arrives at the first suction nozzle. Deactivating the second suction nozzle ensures

BE2016 / 0141 for a good transfer of the weft threads from the second suction nozzle to the first suction nozzle.

In one embodiment, the first suction nozzle is continuously activated. In preferred embodiments, the first suction nozzle is controlled by the control unit so that the first suction nozzle is activated at or shortly before the weft thread trapped by the second suction nozzle is moved to the first suction nozzle. By deactivating, the air consumption for the suction effect can be considerably reduced. The first suction nozzle can be deactivated after a front end of the free end has been cut and removed, or after the free end is held by catching wires or clamping elements or holding elements.

In one embodiment, capture wires are provided between the fabric rim and the first suction nozzle. The capture threads can be used to maintain the free ends of the inserted weft threads. In preferred embodiments, an edge insertion device is provided between the fabric edge and the first suction nozzle for inserting the free end of at least one weft thread. The edge loading device is also referred to as selvedge forming device. The edging insert preferably includes at least one blowing nozzle adapted for blowing the free end of at least one weft thread to bend the free end to a next weaving section. The edging device can be designed and operated similarly to the edging device described in US 6,837,279 B2, the contents of which are hereby incorporated by reference. Such an edge insertion device comprises a hook-shaped element or hook, which is provided with blowing nozzles for blowing

Ί

2016/0141 a free end of a weft thread in the weaving section. For a reliable inlay action, the edge inlay device is preferably mounted in position on the weaving machine in an adjustable manner.

In preferred embodiments, a cutting device is provided between the edging insert and the first suction nozzle to cut a front end of at least one weft thread before inserting the remaining portion of the free end. The cut front ends can be removed to a waste bin by means of the first suction nozzle. In other embodiments, an additional nozzle is provided for removing the cut front ends.

In a second aspect, a weaving machine is provided, which weaving machine includes a weft catching and stretching device as described above. The first suction nozzle and the second suction nozzle are preferably adjustably mounted in position on the weaving machine.

In a third aspect, a method for catching and stretching a weft thread is introduced into a weaving compartment of a weaving machine using a weft threading device arranged stationarily on the weaving machine in an extension of an insertion path of the weaving machine. weft thread for capturing the front end portion of the inserted weft thread and stretching the captured weft thread, a weft thread holding device stationary on the weaving machine in an area of the abutment line for holding the front end portion of at least one weft thread, and a movable guiding device

BE2016 / 0141 which is mounted on a weaving drawer for movement with the weaving drawer for guiding the captured weft thread towards the weft thread holding device, a first suction nozzle being provided as the weft thread holding device, said first suction nozzle having an opening directed towards a fabric edge of the tissue, wherein the first suction nozzle generates a suction flow parallel to the stop line, so that a free end of a weft thread held in the first suction nozzle extends at least substantially parallel to the stop line.

In preferred embodiments, the weft thread stretching device further includes a second suction nozzle, in particular a ring-jet suction nozzle, the opening of which faces a guide channel of the reed when the reed is in its posterior position away from the abutment line, wherein the second suction nozzle is activated upon insertion of a weft thread into the weaving compartment to catch the inserted weft thread and is deactivated at or shortly after the captured weft thread arrives at the first suction nozzle. The first suction nozzle is preferably activated at or shortly before the captured weft thread is moved to the first suction nozzle.

Brief description of the drawings.

In the following, an embodiment of the invention is described in detail with reference to the drawings. Throughout the drawings, like elements are designated by like reference numbers.

Figure 1 shows a perspective for drawing and stretching weft threads mounted on a weaving machine

BE2016 / 0141 view from the top.

Figure 2 shows a weft catching and stretching weft threading device of Figure 1 mounted on a weaving machine in a perspective view from the rear of the weaving machine towards an edge inserter.

Figure 3 shows a weft catching and stretching weft yarn device of Figure 1 mounted on a weaving machine in a perspective view from the rear of the weaving machine towards a first suction nozzle, with a weaving tray in a rear position.

Figure 4 shows a weft catching and stretching weft yarn device of Figure 1 mounted on a weaving machine in a perspective view from the rear of the weaving machine towards a first suction nozzle similar to Figure 3, with a weaving tray in a forward position.

Figure 5 shows a weft catching and stretching weft threading device of Figure 1 mounted on a weaving machine in a perspective view from the insertion side of the weaving machine after a weft thread has been struck and the weaving tray is moved to a rear position.

Detailed description of embodiments.

Figures 1 to 5 show a device 1 for catching and stretching weft threads mounted on a weaving machine, the weaving machine being shown only partially.

As commonly known, when weaving a fabric 2 (see Figure 5), weft threads 3 are inserted into a weaving box formed between faces of warp threads 4 (see Figure 5) by selectively lifting and lowering warp threads 4. During insertion,

BE2016 / 0141 in an air weaving machine, the weft thread 3 is knownly supported by auxiliary nozzles 5 (see figure 2) and guided in a guide channel 6 (see figure 2) of a reed 7, which guide channel 6 defines an insertion path of the inserted weft thread 3. In the illustrated embodiment, a first weft detector 8 is disposed at the end of the insertion path adjacent to the reed 7 to detect the arrival of the weft thread 3. The reed 7 and the first weft detector 8 are mounted on a weaving drawer 9 and movable back and forth by means of the weaving drawer 9 between a rear position for an insertion of a weft thread as shown in Figure 3 and a front position for striking the inserted weft thread as shown in figure 4.

The weft catching and stretching device 1 inserted into the weaving compartment comprises a weft thread stretching device 28 which is stationary on the weaving machine in an extension of an insertion path and a weft holding device 27 which is stationary on the weaving machine in an area of an assessment line 10 (see figure 5). In the illustrated embodiment, a first suction nozzle 11 is provided as the weft thread holding device 27 and a second suction nozzle 12 is provided as the weft thread stretching device 28. Both the first suction nozzle 11 and the second suction nozzle 12 are designed as ring-jet suction nozzles, whereby a suction action is obtained by blowing past an inlet of the suction nozzle. The entrances or openings 23, 24 of both suction nozzles 11, 12 are directed towards a fabric edge 14 (see figure 5), in particular towards the extension of the fabric edge 14. Thus, the two suction nozzles 11, 12 each generate a suction flow parallel to the stop line 10. Air for the suction effect is supplied through supply tubes 13.

BE2016 / 0141 Downstream of the second suction nozzle 12, a second weft detector 15 is mounted on the weaving tray 9 in the insertion direction to detect insertion errors.

The first suction nozzle 11 and the second suction nozzle 12 are not mounted on the weaving tray 9. In the illustrated embodiment, the first suction nozzle 11 and the second suction nozzle 12 are mounted stationary on the weaving machine by means of a support beam 16 and two mounting plates 17, 18 for mounting the first suction nozzle 11 and the second suction nozzle 12 on the support beam 16, respectively. In the embodiment, adjusting means 29 are provided for the support beam 16, which contain, for instance, a slotted hole and a fixing bolt, for moving both suction nozzles 11, 12 together with respect to the stop line 10. In the embodiment shown, similar adjusting means 30, 31 are further provided. on the support beam 16 and the mounting plates 17, 18 which allow an individual adjustment of the position of the mounting plates 17, 18 relative to the support beam 16. In the illustrated embodiment, the mounting plate 17 can be mounted on the support beam 16 in a horizontal position and in an adjustable vertical position, while the mounting plate 18 can be mounted on the support beam 16 in two horizontal positions and in an adjustable vertical position. For this purpose threaded openings are provided in the support beam 16 for bolts of the adjusting means 30 and a row of threaded openings 32 are provided in the support beam 16 in which bolts of the adjusting means 31 can optionally be screwed. Thus, the position of the first suction nozzle 11 and the position of the second suction nozzle 12 relative to the support beam 16 can be adjusted, and thus relative to the stop line 10 and the guide channel 6 of the reed

BE2016 / 0141

7. As shown in Figures 3 and 4, the first suction nozzle 11 is arranged such that a center axis of its opening 23 coincides at least substantially with the guide channel 6 of the reed 7 when the reed 7 is in its forward position, and the second suction nozzle 12 is arranged such that a center axis of its opening 24 at least substantially coincides with the guide channel 6 of the reed 7 when the reed 7 is in its rearmost position. The first suction nozzle 11 is therefore also referred to as the front suction nozzle and the second suction nozzle 12 is referred to as the rear suction nozzle.

The device 1 shown in Figure 1 further comprises an edge insertion device 19 disposed between the fabric edge 14 and the first suction nozzle 11 for inserting the free end of at least one inserted weft thread 3. The edge insertion device 19 comprises a hook-shaped element 20, which is provided is of blowing nozzles 21 for blowing a free end of a weft thread 3 into the weaving compartment. The edge insertion device 19 comprises at least two opposed blowing nozzles 21 arranged on one side of the hook-shaped element 20 facing the fabric edge 14. In the illustrated embodiment, four blowing nozzles 21 are provided which are arranged in two pairs. The operation and arrangement of the blowing nozzles 21 is, for example, as described in US 6,837,279 B2.

A cutting device 22 is provided between the edge insertion device 19 and the first suction nozzle 11, the cutting device 22 being arranged to cut the front ends of inserted weft threads 3 near a side face of the hook-shaped element 20.

BE2016 / 0141 As shown in Figures 1 to 3, the inserted weft thread 3 is caught and stretched by means of the second suction nozzle 12, which is arranged in line with the guide channel 6, when the reed 7 is in its rearmost position. The reed 7 is moved by means of the weaving drawer 9 to a stop line 10 (see figure 5) of a fabric 2 for a stop movement. The weft thread 3 caught and stretched by the second suction nozzle 12, as shown schematically in Figure 1, is moved with the reed 7 and an additional guide device 25 to the stop line 10. The guide device 25 comprises, for example, a hook-shaped guide element 26 which is provided with a notch having inwardly converging sidewalls for receiving the weft thread 3. In the illustrated embodiment, the first weft detector 8 disposed on the weaving drawer 9 functions as the guiding device 25 for guiding the captured weft thread 3 to the first suction nozzle 11, more in particular, the first weft detector 8 is provided with the hook-shaped guiding element 26 of the guiding device 25. This hook-shaped guiding element 26 can consist of a profiled plate which forms part of the weft detector 8, for example a profiled plate which is designed like the plate 33 which forms part is part of the impact detector 15 According to an alternative embodiment, the reed 7 can function as a guiding element of a guiding device for guiding the captured weft thread 3 towards the first suction nozzle 11 during movement of the reed 7.

In the stop movement, as shown in Figure 4, the weft thread 3 is moved in the effective range of the first suction nozzle 11 and can be transferred to the first suction nozzle 11. To this end, the second suction nozzle 12 is added

BE2016 / 0141 is preferably deactivated once the weft thread 3 has penetrated the effective range of the first suction nozzle 11.

As best seen in Figure 5, after striking a weft thread, the free end of said weft thread 3 held by the first suction nozzle 11 extends at least substantially parallel to the abutment line 10. This allows for good stretching of the inserted weft threads 3 and an appropriate action of the edge insertion device 19. To form the selvedge, the front ends of the inserted weft threads are cut and the blowing nozzles 21 of the edge insertion device 19 are activated to bend the remaining portion of the free ends of the inserted weft threads towards the weaving section, the free ends being bound in the fabric 2 together with a next inserted weft thread 3. The cut ends can be transported via the first suction nozzle 11 to a waste bin (not shown).

In a preferred mode of operation, the second suction nozzle 12 is activated upon insertion of a weft thread 3 into the weaving compartment to capture the inserted weft thread and is deactivated at or shortly after the captured weft thread 3 arrives at the effective range of the first suction nozzle 11. The first suction nozzle 11 is activated at or shortly before the captured weft thread is moved to the first suction nozzle 11 by means of the reed 7 and / or the weft detector 8 and / or any other guide means. The first suction nozzle 11 can be deactivated after the front end has been cut by means of the cutter 22 and the cut ends have been transported to a waste bin.

BE2016 / 0141 The activation and deactivation of the first suction nozzle 11, the second suction nozzle 12 and the blowing nozzles 21 of the edge inserter 19 can be controlled by means of a control unit (not shown) which can be operated in the central control unit of the weaving machine are incorporated.

The device and method according to the invention are not limited to the embodiments described by way of example and shown in the drawings, but may also

Variants and combinations of these embodiments include those valien.

BE2016 / 0141

Claims (15)

Conclusions. Device for catching and stretching a weft thread (3) inserted in a weaving compartment of a weaving machine, comprising a weft thread stretching device (28) stationary on the weaving machine in an extension of an insertion path of the weft thread (3) for catching of the front end portion of the inserted weft thread (3) and stretching the captured weft thread (3), a weft thread holding device (27) stationary on the weaving machine in an area of a stop line (10) for holding the front end section of at least one struck weft thread, and a movable guide device (25) mounted on a weaving drawer (9) for movement with the weaving drawer (9) for guiding the captured weft thread (3) towards the weft thread holding device (27), characterized in that that a first suction nozzle (11) is provided as the weft thread holding device (27), said first suction nozzle (11) having an opening (23) facing a fabric edge (14) of the fabric (2) and adapted to generate a suction flow parallel to the abutment line (10), so that after the weft thread (3) has been struck, a free end of said weft thread (3) is held in the first suction nozzle ( 11) extends at least substantially parallel to the stop line (10). Weft catching and stretching device according to claim 1, characterized in that the first suction nozzle (11) is a ring-jet suction nozzle. Weft catching and stretching device according to claim 1 or 2, characterized in that the first suction nozzle (11) is in an adaptable position on the weaving machine in BE2016 / 0141 the area of the stop line (10) is mounted. Weft catching and stretching device according to claim 1, 2 or 3, characterized in that the guiding device (25) comprises a hook-shaped guiding element (26), which is provided, for example, with a notch which has inwardly converging side walls for receiving of the weft thread (3). A weft catching and stretching device according to any one of claims 1 to 4, characterized in that a weft detector (8) is provided on the weaving drawer (9) which serves as a guiding device (25) for guiding the weft caught ( 3) functions towards the first suction nozzle (11). Weft catching and stretching device according to any one of claims 1 to 5, characterized in that the weft thread stretching device (28) comprises a second suction nozzle (12), in particular a ring-jet suction nozzle, the opening of which (24 ) is directed towards a guide channel (6) of the reed (7) when the reed (7) is in its rearmost position away from the stop line (10). Weft catching and stretching device according to claim 6, characterized in that the first suction nozzle (11) and the second suction nozzle (12) are connected to a control unit, the second suction nozzle (12) being controlled by the control unit so that the second suction nozzle (12) is activated upon insertion of a weft thread (3) into the weaving compartment to catch the inserted weft thread (3) and is deactivated at or shortly after the caught weft thread BE2016 / 0141 (3) arrives at the first suction nozzle (11). Weft catching and stretching device according to claim 7, characterized in that the first suction nozzle (11) is controlled by the control unit so that the first suction nozzle (11) is activated at or shortly before the weft thread (3) is caught by the second suction nozzle (12) is moved to the first suction nozzle (11). Weft catching and stretching device according to any one of claims 1 to 8, characterized in that an edge insertion device (19) is provided between the fabric edge (14) and the first suction nozzle (11) for inserting the free end of at least one weft thread. Weft catching and stretching device according to claim 9, characterized in that the edge insertion device (19) comprises at least one blowing nozzle (21) adapted for blowing on the free end of at least one weft thread (3) in order to free the end to bend. Weft catching and stretching device according to claim 9 or 10, characterized in that a cutting device (22) is provided between the edge insertion device (19) and the first suction nozzle (11) about a front end of at least one weft thread (3). ) to be cut off before inserting the remaining part of the free end. Weaving machine, characterized in that the weaving machine comprises a device (1) for catching and stretching a weft thread (3) according to any one of claims 1 to 11. BE2016 / 0141 Method for catching and stretching a weft thread (3) inserted in a weaving compartment of a weaving machine, using an apparatus (1) according to any one of claims 1 to 11 with a weft threading device (28) stationary on the weaving machine arranged in an extension of an insertion path of the weft thread (3) for capturing the front end portion of the inserted weft thread (3) and stretching the captured weft thread (3), a weft thread holding device (27) stationary on the weaving machine in a area of the abutment line (10) is provided for holding the front end portion of at least one abutment weft thread, and a movable guide device (25) mounted on a weaving drawer (9) for movement with the weaving drawer (9) for guiding the captured weft thread (3) towards the weft thread holding device (27), characterized in that a first suction nozzle (11) is provided as the weft thread holding device (27), which first suction nozzle (11) has an opening (23) facing a fabric edge (14) of the fabric (2), the first suction nozzle (11) generating a suction stream parallel to the stop line (10), so that a free end of a weft thread (3) held in the first suction nozzle (11) which extends at least substantially parallel to the abutment line (10). A method of catching and stretching a weft thread according to claim 13, characterized in that the weft thread stretching device (28) comprises a second suction nozzle (12), in particular a ring-jet suction nozzle, the opening (24) of which leads to a guide channel ( 6) of the reed (7) is directed, when the reed (7) is in its rearmost position, away from the abutment line (10), the second suction nozzle (12) being activated upon insertion of a weft thread (3) into the weaving box for catching BE2016 / 0141 of the inserted weft thread and is deactivated at or shortly after the captured weft thread arrives at the first suction nozzle (11). Method for catching and stretching a weft thread 5 according to claim 13 or 14, characterized in that the first suction nozzle (11) is activated at or shortly before the caught weft thread is moved towards the first suction nozzle (11). BE2016 / 0141 Γ “; "· 1