JPH05117944A - Warp yarn feeder - Google Patents

Abstract

PURPOSE:To improve operating efficiency of threading by weakening an air stream flowing from a pair of plates through a slit into a suction box and avoiding slipping of warp yarn from a holding bar. CONSTITUTION:In feeding warp yarn at the time of threading, warp yarn 22, held across a suction box 48 between a warp yarn holding bar 60 and a warp yarn chuck 31 is guided through operation of a warp yarn holding chuck 59 to a slit 49 of the suction box 48 and held in a vertical state along a rear wall surface (50a) of a suction chamber so as to direct upward under a constant tension. A warp yarn pull-down hook 58 is then lowered along the slit 49 to suck the warp yarn 22 crossed over a space between the warp yarn holding bar 60 and the warp yarn holding hook 59 into a suction nozzle passage (44a). Thereby, threading through a guide nozzle (46a) into a heald is carried out. At this time, an air stream sucked from a space between plates 91 and 92 in suction force produced in the suction box 48 is weakened to prevent the warp yarn 22 from slipping from the holding bar 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp feeder,
Specifically, a warp thread provided on a thread threading machine for threading a heddle for operating a warp thread or a dropper for detecting thread breakage used in a loom to sequentially supply the leading end of the warp thread wound around the beam to the heald and the like. Regarding the feeding device.

[0002]

2. Description of the Related Art Generally, as a preparatory work for applying a warp beam to a loom, it is necessary to pass a large number of yarns wound around the warp beam through a heddle and a dropper one by one, and various automated yarns are required. Through machine is used.
These threading machines are provided with a warp supply device that guides the thread ends of the beam of the beam to an entrance guide or a suction nozzle for threading and feeds the thread ends to the threading machine one by one.
This threading device is equipped with a suction box capable of holding the thread in a vertical state with a constant tension so as not to loosen the thread when supplying the thread to the suction nozzle.

As a conventional warp yarn feeding device provided with this kind of suction box, for example, those shown in FIGS. 9 to 11 are known. 9 shows a state where the yarn is tensioned on the front surface of the suction box, and FIG. 10 shows a state where the yarn is guided to the suction nozzle by the warp pull-down hook. In FIGS. 9 and 10, reference numeral 1 denotes a vertical suction box, and the suction box 1 extends vertically from the beam 2 to a position facing the thread 3 threaded on the front surface thereof. A slit 4 that opens toward the thread 3 is formed in a portion of the suction box 1 that faces the thread 3, and the slit 4 has a substantially quadrangular space portion that extends in the up-down direction in the suction box 1. It opens to the suction chamber 5 (see FIG. 11).

At a predetermined position of the suction box 1, a conduit 6,
Vacuum nozzles 9, 10 and 11 connected to a vacuum source (not shown) via 7 and 8 are attached, and an end 3a of the yarn 3 facing the suction box 1 is cut by a cutter 12, and a warp chuck 13 The yarn 3 is sucked into the suction chamber 5 through the slit 4 when the yarn 3 is pulled toward the suction box 1 side by.

The sucked yarn 3 is held by a warp holding bar 14 provided at a substantially central portion of the suction box 1 in a state where the vertical central portion thereof is held, and a warp holding hook 15 provided near the warp holding bar 14 is provided. As shown in FIG. 11, the yarn 3 is supplied to the slit 4 by the hook 15a of the above, and then guided in the suction chamber 5 by the warp pulling down hook 16 that moves in the vertical direction of the suction box 1 in FIG. It is moved downward and is supplied to the nozzle passage 17a of the suction nozzle 17 provided at the lower end of the suction box 1.

At the time of this movement, a predetermined portion of the yarn 3 in the suction box 1 comes out of the suction box 1 between the warp holding bar 14 and the warp pull-down hook 16 to face the slit 4, and near the cutting yarn end 3b. Is moved toward the suction nozzle 17 while being guided into the suction box 1, and the suction nozzle
Bite into 17. Then, the cut yarn end portion 3b is sucked by the nozzle passage 17a of the suction nozzle 17 and the guide nozzle 18 and threaded through the threading hole of the heald 19. After that, although not shown, the warp holding hook 15 is separated from the yarn 3 to release the holding of the yarn 3 by the hook 15, and the suction nozzle 17 sucks from the beam 2 to the yarn end 3b cut by the cutter 12. Then, the threading operation is completed.

When the yarn 3 is sucked into the suction chamber 5 through the slit 4 in the suction box 1 described above, it is cut by the cutter 12 and is fixed so as not to loosen the yarn 3 guided by the warp holding hook 15 to the suction nozzle 17. Since it is possible to hold the thread 3 in a vertical state by the tension of 1, the thread 3 can be stably attached to the suction nozzle 17. 17b in FIGS. 9 and 10
Is an air supply unit that supplies compressed air to the nozzle passage 17a side so that the cut yarn end portion 3b of the yarn 3 can easily bite into the nozzle passage 17a.

[0008]

However, in such a conventional warp yarn feeder, the yarn 3 has the slit 4
Since it is drawn to the suction chamber 5 directly through the suction box 5, a suction force is directly generated from the thread 3 stretched on the front surface of the suction box 1 in the direction of the slit 4, and the force for sucking the thread 3 is relatively strong. It has become a thing. Therefore, when the yarn 3 is moved to the suction nozzle 17 by the warp pull-down hook 16, the yarn 3 located between the warp holding bar 14 and the warp pull-down hook 16 is sucked into the suction box through the slit 4. The thread 3 has come off the warp pull-down hook 16.
For this reason, there is a problem that the cutting yarn end portion 3b of the yarn 3 cannot be caught in the suction nozzle 17 and the operation of threading the heald 19 cannot be performed.

Therefore, in the present invention, when the warp yarn is pulled down to the suction nozzle by the yarn gripping moving means, the warp yarn located between the yarn holding means and the vicinity of the suction nozzle is sucked into the suction box and comes off from the yarn holding means. It is an object of the present invention to provide a warp yarn feeding device capable of preventing the warp and surely engaging the warp yarn with the suction nozzle to reliably perform the threading operation.

[0010]

The invention according to claim 1 is
In order to achieve the above object, a thread end gripping means for gripping a thread end portion of a warp thread stretched in the vertical direction, and a warp thread provided near the upper end of the thread end gripping means and gripped by the gripping means are provided. A cutter for cutting and a suction nozzle which is provided below the yarn end gripping means and which passes the end portion of the warp cut by the cutter through the heald while sucking the end portion, and is provided between the yarn end gripping means and the suction nozzle, A slit is formed in the up-and-down direction facing the warped warp thread, and a suction box for guiding the warp thread cut by the cutter into the inside through the slit, and a suction box by grasping the thread cut by the cutter The yarn gripping moving means that transfers the yarn from the vicinity of the yarn end gripping means to the suction nozzle while guiding, and the yarn gripping moving means that is provided substantially in the vertical center of the suction nozzle. A yarn holding means for holding a predetermined part of 該経 yarn by the substantially central portion in engagement with the warp threads were transferred to Le,
In the warp feeder, the suction box is provided with a pair of plates, and the pair of plates are separated from the suction box by a predetermined distance toward the warped yarn and face the suction nozzle from the yarn holding means. And extends in the up-down direction, and is separated from each other by sandwiching the slit.

In order to achieve the above object, the invention according to claim 2 is characterized in that the separation distance between the suction box and the pair of plates is longer than the slit width.

[0012]

According to the first aspect of the invention, the suction force generated in the suction box through the slit is generated between the pair of plates,
The air flow dispersed between the plate and the suction box and sucked into the suction box through the slit from between the pair of plates is weakened. Therefore, when the yarn is pulled down to the suction nozzle by the yarn gripping moving means, the yarn located between the yarn holding means and the vicinity of the suction nozzle is not sucked into the suction box and does not come off from the yarn holding means.

According to the second aspect of the invention, the air flow sucked into the suction box from the space between the suction box and the plate via the slit is reliably ensured, and the inside of the suction box from the space between the pair of plates via the slit. The air flow sucked into is surely weakened.

[0014]

EXAMPLES The present invention will be described below based on examples.
1 to 8 are views showing an embodiment of a warp supplying device according to the present invention. First, the configuration will be described. 1 and 2,
20 is a beam, and beam 20 is a frame 21 of the threading machine.
Is supported by a back frame (not shown) disposed on the front surface (left side in FIG. 1). Beam 20 has many threads 22 (warp)
The yarn 22 is wound around the front surface of the frame 21 by a pair of upper and lower thread tensioning beams 23 and 24 that are previously drawn from the beam 20 and horizontally provided on the back frame. They are arranged laterally along the tensioning beams 23, 24. In addition, reference numerals 25 and 26 are grip plates which are fitted into the grooves of the channel-shaped thread tension beams 23 and 24, respectively, and which grip the thread 22 together with the thread tension beams 23 and 24.

The thread tension beams 23 and 24 are pressed by a pressing member (not shown) so as to be separated from each other in the vertical direction, so that the thread 22 is tensioned. Frame 21
In the upper part of the above, the cutter 27,
Twill pipes 28, 29, a suction nozzle 30 for separation, and a warp chuck 31 as a yarn end holding means are provided. Of these yarns, the traverse pipes 28, 29 and the separation suction nozzle 30 have one yarn 22 located on the rightmost side in FIG. 2 from a large number of yarns 22 arranged in the yarn tensioning beams 23, 24. Only has the function of separating.

That is, when the yarn 22 is wound around the beam 20, the yarn end portions 22a of the yarn 22 are traversed by the yarns 22 and 33 in order to facilitate separation in the subsequent operation. The twill pipes 28 and 29 are threaded with the twill cords 32 and 33, respectively, and the twill pipes 28 and 29 are rotated by 180 ° with respect to the extending direction of the twill cords 32 and 33. The thread 22 on the rightmost side of 2 is unthreaded, and the thread 22 is separated.

Next, the separating suction nozzle 30 approaches the separated yarn 22, and the yarn 22 is sucked and gripped by a suction portion (not shown) provided in the nozzle 30, and further in the right direction in FIG. The yarn 22 is moved to move the yarn 22 to a substantially central position of the warp chuck 31 and then separated. Although not described in detail, the warp chuck 31 is composed of a suction nozzle portion and a yarn end grip portion 31a, and when the driving means (not shown) approaches the yarn 22 as shown by an imaginary line, after sucking the yarn 22 by the suction nozzle portion. The yarn 22 is grasped by the yarn end grasping portion 31a. Here, as shown in FIGS. 1 and 2, the cutter 27 is provided above the twill pipes 28 and 29 and the yarn tensioning beams 23 and 24.
When the yarn 22 is suctioned and separated by the separation suction nozzle 30 and is provided in the vicinity, and the yarn end 22a of the yarn 22 is gripped by the warp chuck 31, the yarn end 22a is cut and the cut yarn end 22b is cut. The thread 22 is formed and released from the grip of the thread tension beam 23.

Reference numeral 44 is a suction nozzle provided on the frame 21 below the warp chuck 31. The suction nozzle 44 has a conduit 45.
Compressed air is introduced from a compressed air source (not shown) through the passage, and the compressed air is supplied along a nozzle passage 44a formed in the suction nozzle 44. Then, due to the injector effect of the compressed air, the cut yarn end portion of the yarn 22 cut by the cutter 27.
When 22b is guided to the left end of the suction nozzle 44, the cutting yarn end 22b is sucked into the nozzle passage 44a, moves along the nozzle passage 44a, and is provided in series with the suction nozzle 44 and the suction nozzle 44. After passing through the guide nozzle 46a, the thread is passed through the threading hole 47a of the heald 47 positioned between the right end of the guide nozzle 46a and the guide nozzle 46b. Reference numeral 44b is a compressed air supply unit that supplies compressed air toward the nozzle passage 44a in order to facilitate suction of the cut yarn end portion 22b into the nozzle passage 44a.

On the other hand, 48 is a warp chuck 31 and a suction nozzle 44.
It is a suction box provided between. Suction box 48
As shown in FIG. 3, a slit 49 is formed in the suction box 48, the slit 49 extending in the up-down direction so as to face the thread-tensioned thread facing the 22 side and extend in the up-down direction. The suction chamber 50 has a space formed in the up-down direction. Further, the suction box 48 has a pair of side walls 48a, 48b.
The side walls 48a, 48b form a passage R whose tip extends from the opening of the slit 49 toward the rear wall surface 50a of the box 48 to guide the yarn 22 to the rear wall surface 50a. There is.

Further, as shown in FIG. 1, a suction box
On the back surface (frame 21 side) of 48, suction nozzles 51, 52 and 53 communicating with the suction chamber are provided at the upper, middle and lower portions of the suction box 48, respectively, and vacuum nozzles 51, 52 and 53 are provided.
Is connected to a vacuum source (not shown) via conduits 54, 55 and 56. Then, the air is sucked into the suction chamber 50 through the slit 49 of the suction box 48, and accordingly, the thread is fed into the slit 49.
When the yarns 22 come close to each other, the yarns 22 are sucked and sucked into the suction chamber 50 through the slit 49 and the air passage R, and the yarns 22 cut by the cutter 27 are guided by the suction box 48, and the suction nozzles.
Lower to 44. At this time, the suction chamber 50 is
Since the air flow rising from the passage R side toward the rear wall surface 50a is generated by 1, 52, 53, the yarn sucked into the suction chamber 50
22 is held vertically with a certain tension upward along the rear wall surface 50a of the suction chamber 50.

Reference numeral 57 is a yarn gripping and moving means for gripping the yarn 22 cut by the cutter 27 and transferring it from the vicinity of the warp chuck 31 to the suction nozzle 44 while being sucked and guided by the suction box 48. It comprises a warp pulling down hook 58 and a warp holding hook 59. The warp pull-down hook 58 is formed in an L shape, and the base end portion of the warp pull-down hook 58 is adjacent to the side surface of the suction box 48 and is rotatably supported by the upper and lower portions of the frame 21. It is fixed to the timing belt 63 that is wound around the
The tip of 58 is bifurcated to form a grip groove 58a.

When the small pulley 62 is driven by a drive source (not shown), the grip groove 58a of the warp pulling down hook 58 descends along the slit 49 along the front surface of the suction box 48 to the vicinity of the thread tension beam 24. The warp pull-down hook 58 is configured to be raised again to return to the original position. The warp yarn holding hook 59 is provided in the vertical center of the suction box 48 between the yarn 22 and the suction box 48, and as shown in FIG.
A hook 59a that is bent toward 48 is formed, and the base end portion is connected to a drive mechanism (not shown) and driven vertically and horizontally in FIG.

The yarn end 22a of the yarn 22 shown in FIG. 1 is gripped by the advanced warp chuck 31 and the yarn end 22a is cut by the cutter 27.
After being cut by the warp chuck 31, the warp chuck 31
If the warp holding hook 59 moves forward in the figure as shown in FIG.
22 is moved to the suction box 48 side while retracting downward so as to be held in the suction box 48 side. At this time, the thread
22 is gripped by the hook 59a of the warp holding hook 59, is guided to the front surface of the slit 49 of the suction box 48, and the cutting yarn end 22b of the yarn 22 passes through the slit 49 and the passage R and the suction chamber 50.
Is sucked into.

The warp thread holding bar 60 constitutes thread holding means, and like the warp thread holding hook 59, the thread 22 and the suction box 48.
It is provided at a substantially central portion in the up-down direction of the suction box 48, is rotatably supported by the frame 21 via a pin 64, and is always held horizontally. Cut end 22b of thread 22
Is guided to the suction chamber 50 by the warp holding hook 59,
The yarn tension beam 24 side, which is a predetermined position of the yarn 22, is held at the central portion, and as shown by the phantom line in FIG.
It has a function of hanging the cutting thread end portion 22b between the suction box 48 and the suction box 48.

Then, the grip groove portion 58 of the warp pull-down hook 58.
Moves down along the slit 49, grips the cutting yarn end 22b hung between the warp holding bar 60 and the suction box 48, and moves to a position below the suction nozzle 44.
60 is rotated downward around the pin 64 to release the holding of the thread 22 on the thread tension beam 24 side, and the released thread 22 is sucked by the cutting thread end 22b into the nozzle passage 44a of the suction nozzle 44. It is threaded on the heald 47.

On the other hand, the suction box 48 is provided with a pair of plates 91 and 92 as shown in FIG.
91 and 92 are separated from the suction box 48 by a predetermined distance toward the thread 22 and extend vertically from the warp holding bar 60 to the vicinity of the suction nozzle 44. Separated. The plates 91, 92 are attached to the suction box 48 by screws 91a, 91b, 91c, 92a, 92b, 92c, and the separation distance from the suction box 48 is set to be longer than the width of the slit 49. .. Therefore, the air flow sucked into the suction chamber 50 through the slit 49 is between the pair of plates 91 and 92 and between the plates 91 and 92 and the suction box 48 as shown by arrows a and b in FIG. And are distributed to. In addition, in FIG.
The plates 91 and 92 are omitted in order to prevent the drawing from becoming complicated.

Next, the operation will be described. In FIGS. 1 and 2, the yarn 22 on the rightmost side in FIG. 2 that has been pulled out from the beam 20 in advance and has been tensioned between the beam tensioning beams 23 and 24 of the back frame on the front surface of the frame 21 is the twill tube. When the traverse cords 32, 33 are released from being traversed by the rotation of, the separation suction nozzle 30 comes close to the yarn end 22a of the yarn 22, and after the yarn end 22a is sucked and gripped by the suction portion. The yarn end 22a is moved to the right in the figure. The yarn end 22a is a warp chuck 31 in FIG.
Is moved to about the center and separated. Then, the warp chuck 31 advances toward and approaches the yarn end 22a as shown by the phantom line in FIG. 1, and grips the yarn end 22a.

Next, the yarn end 22a is cut by the cutter 27, and the cut yarn end 22b formed after cutting is retracted together with the warp chuck 31 while being held by the warp chuck 31, and as shown in FIG. The vicinity of the yarn end portion 22b below the warp chuck 31 is sucked into the suction chamber 50 through the slit 49 of the suction box 48 and the passage R. Then, the yarn 22 is held by the warp bar 60 at the intermediate portion, and the warp holding bar 60 and the warp chuck 31 are held.
The yarn 22 in between is held in such a state that it crosses the suction chamber 50 of the suction box 48.

Further, as shown in FIG. 3, a warp holding hook.
59 moves forward to the upper side in the figure, then moves backward while moving to the suction box 48 side, holds the thread 22 on the hook 59a and guides it to the slit 49 of the suction box 48. At this time, the suction chamber 50 is moved from the passage R side to the rear wall surface 50a by the vacuum nozzles 51, 52 and 53.
Since the air current that rises toward the suction chamber 50 is generated, the yarn 22 sucked into the suction chamber 50 is held vertically with a constant tension upward along the rear wall surface 50a of the suction chamber 50. And
As shown in FIG. 6, most of the yarn 22 on the side of the cutting yarn end 22b is sucked and stored in the suction chamber 50 of the suction box 48, and the warp holding hook 59 maintained horizontally with the warp holding hook 59 in the middle of the yarn 22. bar
Between the 60, the part that is bridged is formed.

Here, as shown in FIG. 7 (the plates 91 and 92 are omitted in FIG. 7 in order to avoid complication), the warp pull-down hook 58 causes the suction box to move as the small pulley 62 rotates. The thread that descends along the front surface of the slit 48 along the slit 49 and is hung between the warp holding bar 60 and the warp holding hook 59.
While holding 22 in the holding groove 58a, it descends toward the suction nozzle 44. When the grip groove 58a reaches below the suction nozzle 44, as shown by the broken line in FIG. 8, when the tip of the cutting yarn end 22b is sucked and guided by the suction box 48 and approaches the inlet of the suction nose 44. It is sucked into the nozzle passage 44a of the suction nozzle 44.

At this time, as shown by arrows a and b in FIG. 3, the suction force generated in the suction box 48 via the slit 49 is generated between the pair of plates 91 and 92 and between the plates 91 and 92 and the suction box 48. Distributed between and between a pair of plates
The air flow sucked into the suction box 48 through the slit 49 from between 91 and 92 weakens. Therefore, when the yarn 22 is pulled down to the suction nozzle 44 by the warp pull-down hook 58, the yarn located between the warp yarn holding bar 60 and the vicinity of the suction nozzle 44.
22 is not sucked into the suction box 48.

Further, since the cutting yarn end portion 22 is urged upward along the rear wall surface 50a of the suction chamber 50, it always follows the rear wall surface 50a when it is pulled down by the warp down hook 58 to the suction nozzle 44. To move. Therefore, the tip of the cutting yarn end 22a is guided by the guide nozzle more than the compressed air supply unit 44b.
The nozzle portion 44a is surely located on the side of the nozzle passage 44a, and the supply portion 44b surely bites the inlet portion of the nozzle passage 44a.
After being sucked by the guide nozzle 46a, it is threaded through the threading hole 47a of the heald 47. At the same time, as shown in FIG. 7, the warp yarn holding bar 60 is rotated downward about the pin 64, and the holding of the yarn 22 on the yarn tensioning beam 24 side by the warp yarn holding bar 60 is released. As shown by the phantom line, the thread 22 from the thread tensioning beam 24 to the end of the cutting thread is sucked by the suction nozzle 44 and threaded through the threading hole 47a of the heald 47 to complete the threading operation.

As described above, in this embodiment, the suction box 48
In addition, the suction box 48 is separated from the warp holding bar 60 by a predetermined distance toward the thread 22 and extends in the vertical direction from the warp holding bar 60 toward the vicinity of the suction nozzle 44. Since the pair of plates 91 and 92 are provided, the suction force generated in the suction box 48 through the slit 49 is dispersed between the pair of plates 91 and 92 a and between the plates 91 and 92 and the suction box 48 b. You can
The air flow sucked into the suction box 48 through the slit 49 from between the pair of plates 91, 92 can be weakened. Therefore, when the yarn 22 is pulled down to the suction nozzle 44 by the warp pull-down hook 58, the yarn 22 located between the warp holding bar 60 and the vicinity of the suction nozzle 44 is sucked into the suction box 48 and comes off the warp holding bar 60. It is possible to prevent the thread 22 from being caught, and the thread 22 can be surely caught in the suction nozzle 44 so that the threading operation can be reliably performed.

The suction box 48 and the pair of plates 9
Since the separation distance between 1 and 92 is longer than the width of the slit 49, it is necessary to ensure the air flow sucked into the suction box 48 through the slit 49 from between the suction box 48 and the plates 91 and 92. Therefore, the air flow sucked into the suction box 48 from between the pair of plates 91 and 92 via the slit 49 can be surely weakened.

[0035]

According to the invention described in claim 1, since the suction force generated in the suction box through the slit can be dispersed between the pair of plates and between the plate and the suction box, The air flow sucked into the suction box from between the pair of plates through the slit can be weakened. Therefore, when the warp yarn is pulled down to the suction nozzle by the yarn gripping moving means, it is possible to prevent the warp yarn positioned between the yarn holding means and the suction nozzle from being sucked into the suction box and coming off the yarn holding means. As a result, the warp thread can be surely caught in the suction nozzle to ensure the threading operation.

According to the second aspect of the present invention, it is possible to reliably secure the air flow sucked into the suction box through the slit between the suction box and the plate, and between the pair of plates through the slit. The air flow sucked into the suction box can be surely weakened.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of an embodiment of a warp supplying device according to the present invention.

FIG. 2 is a front view showing the overall configuration of the warp supply device in FIG.

FIG. 3 is a partial cross-sectional view taken along arrow A1-A1 in FIG.

FIG. 4 is a front view of the main part of the suction box in FIG.

FIG. 5 is a side view showing an operation relating to warp supply.

FIG. 6 is a side view showing an operation relating to warp supply.

FIG. 7 is a front view showing an operation relating to warp supply.

FIG. 8 is a side view showing an operation relating to warp supply.

FIG. 9 is a side view showing an overall configuration of a conventional warp yarn feeder.

FIG. 10 is a side view showing an operation relating to conventional warp supply.

11 is a partial cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 22 thread (warp) 22a thread end 22b cutting thread end 27 cutter 31 warp chuck (thread end gripping means) 44 suction nozzle 47 heald 48 suction box 49 slit 57 thread gripping moving means 60 warp holding bar (thread holding means) 91 , 92 plates

Claims (2)

[Claims] 1. A yarn end gripping means for gripping a thread end of a warp thread stretched in the vertical direction, and a cutter provided near the upper end of the thread end gripping means for cutting the warp thread gripped by the gripping means. And a suction nozzle which is provided below the yarn end holding means and which passes the end portion of the warp cut by the cutter through the heald while sucking the end portion of the warp, and between the yarn end holding means and the suction nozzle, and thread tension is performed. Slits are formed in the vertical direction to face the warp threads,
A suction box for sucking and guiding the warp cut by the cutter through the slit, and a yarn gripping movement for transporting the yarn cut by the cutter from the vicinity of the yarn end gripping means to the suction nozzle while guiding the yarn by the suction box. Means and thread holding means which is provided at a substantially central portion in the vertical direction of the suction nozzle and which engages with the warp transferred to the suction nozzle by the thread gripping and moving means and holds a predetermined portion of the warp at the substantially central portion. In the warp yarn supplying device, the suction box is provided with a pair of plates, and the pair of plates is separated from the suction box by a predetermined distance toward the warped yarn and faces the suction nozzle from the yarn holding means. And a warp supplying device that is vertically spaced apart from each other and is spaced apart from each other by sandwiching a slit. 2. The warp feeder according to claim 1, wherein a distance between the suction box and the pair of plates is longer than a slit width.