JPS63315647A - Yarn feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is provided in a thread supply device, specifically a threading machine that threads warp threads through a heddle and a dropper used in a loom, and which guides the warp threads to a threader guide. , regarding the feeding device, which facilitates speeding up of the threading machine.

(Prior art) In general, as a preparatory work for putting the warp beam on the loom,
A threading operation is required in which a large number of threads wound around a warp beam are threaded one by one through a heald and a dropper, and various automated threading machines are used. These threading machines are equipped with a thread supply device that guides the end of the thread of the beam to a threading inlet guide or suction nozzle and supplies the threads one by one to the threading machine.

As a conventional yarn feeding device of this type, one shown in FIG. 12, for example, is known. In Figure 12, 1
is a beam, and a large number of yarns 2 wound around the beam 1 each have a weight 3 attached to the yarn end, and rollers 4.5 and 6.
The front of the frame 7 of the threading machine (beam 1 side)
They are arranged horizontally along the , and are further strung vertically. Then, the thread 2 released from the twill by the pair of constricting tubes 8.9 alternately going in and out is pulled away by the separation suction nozzle 10 toward the threading suction nozzle 11, and then,
After being gripped by a gripping chuck 12 below the separation suction nozzle 10, it is cut by a cutter 13 near the roller 5. The gripping chuck 12 is attached to one end of the arm 14,
The other end of the arm 14 is fixed to a rotation shaft 15 rotatably supported by the frame 7. When the thread 2 is cut by the cutter 13, the arm 14 is rotated together with the rotating shaft 15 in the direction of arrow A in the figure by a drive mechanism (not shown), and the thread 2 held by the gripping chuck 12 is accordingly rotated. The yarn end is guided to the inlet of a guide nozzle 16 provided on the suction side of the suction nozzle 11. Then, when the grasping chuck 12 is released, the end of the thread 2 is sucked into the suction nozzle 11 through the guide nozzle 16, and the guide nozzle 16 and the suction nozzle 11
The thread 2 is threaded through the threading hole of the heald 17 positioned between the two.

(Problems to be Solved by the Invention) However, in such conventional yarn supply devices, members with large inertia forces such as gripping chucks and arms are configured to reciprocate around a rotation axis with large strokes. Therefore, if the threading operation was made faster, vibrations would occur in the device, which would impede operation, making it impossible to increase the speed of the threading machine. In addition, since the thread that is initially stretched vertically becomes slack, it is pulled horizontally at high speed for threading, which tends to cause twisting of the thread when feeding the thread, which increases the success rate of threading. There was a problem in that it lowered the

(Purpose of the Invention) Therefore, the present invention grips the thread end of the stretched thread with a thread end gripping means, cuts it with a cutter, and then suctions and guides the thread to a suction box while threading the thread through the thread with a thread gripping and moving means. The aim is to eliminate vibration of the device and twisting of the thread by smoothly moving it to the suction nozzle for use, thereby increasing the speed of the threading machine and improving the success rate of threading.

(Means for Solving the Problems) In order to achieve the above object, the yarn supply device according to the present invention includes a yarn end gripping means for gripping the yarn end of the yarn stretched in the vertical direction, and a yarn end gripping means for gripping the yarn end of the yarn stretched in the vertical direction. A cutter is provided near the top to cut the thread gripped by the thread end gripping means, and a cutter is provided below the thread end gripping means to suck the cut thread end of the thread cut by the cutter and then transfer the thread to the heald. A slit is provided between the suction nozzle to be passed through, the yarn end gripping means and the suction nozzle, and is formed in the vertical direction facing the stretched yarn,
a suction box that sucks and guides the yarn cut by the cutter through the slit; and a yarn gripping movement that grips and transfers the yarn from the vicinity of the yarn end gripping means to the suction nozzle while the yarn cut by the cutter is suctioned and guided by the suction box. have the means and.

(Function) In the present invention, the thread end of the stretched thread is grasped by the thread end grasping means, and after being cut by the cutter, the thread is sucked and guided to the suction box by the thread grasping moving means for threading. Since it is smoothly moved to the suction nozzle, vibration of the device and twisting of the thread are eliminated. Therefore, the speed of the threading machine is increased, and the success rate of threading is also improved.

(Example) Hereinafter, the present invention will be explained based on the drawings.

1 to 11 are diagrams showing one embodiment of the present invention.

First, the configuration will be explained.

In Figure 1.2, 20 is a beam, and the beam 20
is supported by a back frame (not shown) disposed on the front side (on the left side in FIG. 1) of the frame 21 of the threading machine. A large number of threads 22 are wound around the beam 20, and the threads 22 are pulled out from the beam 20 in advance and tied to the front surface of the frame 21 by a pair of upper and lower thread tensioning beams 23 and 24 provided horizontally on the bank frame. The threads are tensioned in the vertical direction, and are further arranged in the transverse direction along thread tensioning beams 23,24. Incidentally, reference numerals 25 and 26 denote gripping plates that are fitted into the grooves of the channel-shaped thread tensioning beams 23 and 24, respectively, and grip the thread 22 together with the thread tensioning beams 23 and 24. Further, the thread tensioning beams 23 and 24 are each pressed by a pressing member (not shown) upwardly and downwardly so as to be separated from each other, thereby tensioning the thread 22.

In the upper part of the frame 21, below the thread tensioning beam 23, a cutter 27, a constrictor tube 28, 29, and a suction nozzle 3 for separation are arranged in order.
0 and a warp chuck 31 as a thread gripping means are provided. Of these, the restricting tubes 28, 29 and the separation suction nozzle 30 are used to separate the threads 22 located on the right side in FIG. It has a function to separate only books. That is, when the thread 22 is wound around the beam 2o, the thread end 22a of the thread 22 is
Twill strings 32 and 33 are attached to the thread 22, and as shown in FIG.
8.29 is rotated 180 degrees around the shaft 34, and the thread 22 on the right side is uncrossed by the thread in FIG. Next, the separation suction nozzle 30 approaches the separated yarn 22 and moves the yarn 22 into a V-shaped groove 30a at the tip.
The yarn 22 is suctioned and further moved rightward in FIG. 3 to approximately the center position of the warp chuck 31 shown in FIG. 2, and the yarn 22 is separated.

Note that 35 is a support member that supports the throttle tubes 28 and 29 around the shaft 34.

On the other hand, as shown in FIGS. 4 to 6, the warp chuck 31 includes a suction nozzle section 36 and a thread end gripping section 37.

The suction nozzle part 36 is provided on the upper part of the warp chuck 31, and has a suction groove part 36a formed vertically in a V-shape at the left end in the figure, and a vacuum source (not shown) and a flexible hose, for example, at the right end. A connecting fitting 38 is screwed together and is formed inside the suction nozzle portion 36 and connected through the connecting fitting 3.
Air is sucked from the suction groove 36a through the communication hole 36b communicating with the yarn 22, and when the yarn 22 approaches the suction groove 36a, the yarn 22 is suctioned and gripped by the suction groove 36a. The yarn end gripping section 37 is provided below the suction nozzle section 36 and has a pair of left and right gripping members 39 and 40 facing in the air suction direction of the suction nozzle section 36 .

The gripping members 39, 40 each extend through the proximal end of the bottle 4.
1.42, the gripping member 39.40 is rotatably supported by the suction nozzle part 36, and the tip of the gripping member 39.40 has a notch 39a140a that enlarges toward the left side in the figure, as shown in FIG.
are formed respectively. Further, a torsion spring 43 supported by a pin 41 is interposed between the inner proximal ends of the gripping members 39 and 40, and the torsion spring 43 is attached so that the distal ends of the gripping members 39 and 40 are in contact with each other. to strengthen Furthermore, as shown in Figure 1,
The warp chuck 31 is driven by a drive source (not shown) provided on the frame 21 to move forward and backward in the horizontal direction, and
close to and away from the yarn end 22a. When the warp chuck 31 approaches the yarn end portion 22a and moves forward to the position shown by the imaginary line, the yarn end portion 22a in FIG.
The gripping member 39.40 is guided by the notches 39a, 40a.
40, the gripping members 39 and 40 are separated from each other as shown by phantom lines against the torsion spring 43,
Further, as described above, the suction groove portion 36a of the suction nozzle portion 36
The end portion 22a of the thread 22 is attached to the warp chuck 3.
1. Here, as shown in FIG. 1.2, the cutter 27 is provided above the constriction pipe 28.29 and near the thread tensioning beam 23, and the thread 22 is sucked into the separation suction nozzle 30.
When the thread 22 is separated and the thread end 22a of the thread 22 is gripped by the warp chuck 31, the thread end 22a is cut, and the cut thread end 2
2b to release the thread 22 from the grip of the thread tensioning beam 23.

Again, in FIG. 1.2, 44 is a suction nozzle provided on the frame 21 below the warp chuck 31. Compressed air is introduced into the suction nozzle 44 from a compressed air source (not shown) through a conduit 45, and the suction nozzle 44 is Compressed air is supplied along a nozzle passage 44a formed within the nozzle 44. Then, due to the injector effect of the compressed air, when the cut yarn end 22b of the yarn 22 cut by the cutter 27 is guided to the left end of the suction nozzle 44, the cut yarn end 22b is sucked into the nozzle passage 44a and the nozzle The thread moves along the passage 44a and is threaded into the thread passage hole 47a of the heald 47 positioned between the right end of the suction nozzle 44 and the guide nozzle 46. 48 is a suction box provided between the warp chuck 31 and the suction nozzle 44. As shown in FIG. 7, the suction box 48 has a slit 49 formed on the tensioned thread 22 side, which extends in the vertical direction facing the thread 22, and whose cross section expands toward the thread 22. The slit 49 is connected to a suction chamber 50 formed vertically within the suction box 48.
It is open and communicating. Furthermore, as shown in Figure 1,
On the back surface (frame 21 side) of the suction box 48, vacuum nozzles 51.52 and 53 are provided at the upper, middle, and lower portions of the suction box 48, respectively, and communicate with the suction chamber 50. conduit 54.55
．． It is connected to a vacuum source (not shown) via 56. and,
Air is sucked into the suction chamber 50 through the slit 49 of the suction box 48, and as a result, the thread 22 is drawn into the slit 49.
When the thread 22 approaches the suction nozzle 4 , the thread 22 is sucked and introduced into the suction chamber 50 through the slit 49 .
Descend to 4.

57 is a thread gripping and moving means that grips the thread 22 cut by the cutter 27 and transfers it from the vicinity of the warp chuck 31 to the suction nozzle 44 while being sucked and guided by the suction box 48; hook 5
8, consisting of a warp holding hook 59 and a warp holding bar 60. The warp pull-down hook 58 is formed in a 5-shape, and the base end of the warp pull-down hook 58 is adjacent to the side surface of the suction box 48 and connected to a large boo U61 and a small pulley that are rotatably supported on the upper and lower parts of the frame 21. It is fixed to the timing heald 63 wound around the warp thread 62, and the warp thread lowering hook 58
The tip of the gripper is bifurcated to form a gripping groove 58a. When the small pulley 62 is driven by a drive source (not shown), the gripping groove 58a of the warp pull-down hook 58 moves down the front surface of the suction box 48 along the slit 49 to the vicinity of the thread tensioning beam 24, and then rises again. The warp pull-down hook 58 is then returned to its original position. The warp holding hook 59 is provided approximately at the vertical center of the suction box 48 between the yarn 22 and the suction box 48, and as shown in FIG. Hook 59 bent towards
a is formed, and the proximal end is connected to a drive mechanism (not shown) and driven in the vertical and horizontal directions in FIG. 7, respectively. and,
The yarn end 22a of the yarn 22 in FIG. 1 is gripped by the advanced warp chuck 31, and after the yarn end 22a is cut by the cutter 27, when the warp chuck 31 retreats while gripping the yarn end 22a, As shown in FIG. 7, the warp holding hook 59 advances upward in the figure, passes the left side of the thread 22, holds the thread 22 toward the suction box 48, and retreats downward toward the suction box 48. Move to.

At this time, the thread 22 is attached to the hook 59a of the warp holding hook 59.
The cut thread end 22b of the thread 22 is guided to the front surface of the slit 49 of the suction box 48 and sucked into the suction chamber 50 through the slit 49. On the other hand, as shown in FIG.
It is provided at approximately the center in the vertical direction, is rotatably supported by the frame 21 via a pin 64, and is normally held horizontally. When the cut yarn end 22b of the yarn 22 is guided to the suction chamber 50 by the warp holding hook 59, the yarn tensioning beam 24 side of the yarn 22 is held and the warp holding bar is moved as shown by the phantom line in FIG. It has a function of passing the cut thread end 22b between the suction box 60 and the suction box 48. and,
The gripping groove 58a of the warp pulling hook 5B is the slit 49.
The warp holding bar 60 and the suction box 48
When the interlock grips the passed cut yarn end 22b and moves to the vicinity of the lower part of the suction nozzle 44, the warp holding bar 60
is rotated downward around the pin 64 to release the thread 22 from being held on the thread tensioning beam 24 side, and the released thread 22 passes through the cut thread end 22N) into the nozzle passage 44a of the suction nozzle 44.
is suctioned by the heald 47 and threaded through the heald 47. Note that the torsion spring 43 of the warp chuck 31 causes the cut thread end 22b to move downward when the cut thread end 22b is grasped by the warp lowering hook 58, and the cut thread end 22b is held by the gripping member 39.40 that clamps the cut thread end 22b. It is set to have a biasing force that allows it to be easily pulled out from between.

Next, the effect will be explained.

In FIG. 1.2, the beam 20 is drawn out in advance;
Among the threads 22 stretched between the thread tensioning beams 23 and 24 of the hack frame on the front surface of the frame 21, the thread 22 on the right side in FIG.
When the twill is released from the twilling of the twill strings 32 and 33 by the rotation of The section 22a is moved to the right in the figure. Then, the yarn end portion 22a moves to approximately the center of the warp thread chamfer 731 in FIG. 2 and is separated. Next, the warp chuck 31 advances toward and approaches the yarn end 22a, and as shown in FIG.
The yarn end portion 22a is attached to the gripping member 39.4 of the warp chuck 31.
The gripping member 39.4 is guided by the notches 39a and 40a of
0, and at the same time the suction groove portion 36 of the suction nozzle portion 36
a, and the yarn end portion 22a is gripped by the warp chuck 31. The cut yarn end 22b formed by cutting the yarn end 22a with the cutter 27 moves backward together with the warp chuck 31 while being held by the warp chuck 31, and as shown in FIG. The lower portion of the chuck 31 is sucked into the suction chamber 50 through the slit 49 of the suction box 48 . The yarn 22 is held at the intermediate portion by the warp holding bar 60, and is maintained in such a state that the yarn 22 between the warp holding bar 60 and the warp chuck 31 crosses the suction chamber 50 of the suction box 48. Furthermore, as shown in FIG. 7, the warp holding hook 59 moves forward in the upward direction in the figure, and then moves backward while moving toward the suction box 48, and the thread 22 is moved to the hook 59a.
grip it and guide it to the slit 49 of the suction box 48. Then, as shown in FIG. 9, the cut yarn end 22 of the yarn 22 is
Most of the b side is suctioned and stored in the suction chamber 50 of the suction box 48, and a portion is formed in the middle of the yarn 22 where the hook is passed between the warp holding hook 59 and the warp holding bar 60 maintained horizontally. be done.

Here, as shown in FIG.
As the small pulley 62 rotates, the front surface of the suction box 48 descends along the slit 49, and the thread 22 hooked between the warp holding bar 60 and the warp holding hook 59 is gripped by the gripping groove 58a. It further descends toward the suction nozzle 44. When the gripping groove 58a reaches below the suction nozzle 44, the cut yarn end 2
The tip of the thread 2b is suctioned and guided into the suction chamber 50 of the suction box 48, and the thread is suctioned into the nozzle passage 44a of the suction nozzle 44 from a portion close to the inlet of the suction nozzle 44, and enters the thread passage hole 47a of the heald 47. be passed through. At the same time, the 10th
As shown in the figure, the warp holding bar 60 is rotated downward about the bin 64, and the holding of the yarn 22 on the thread tensioning beam 24 side by the warp holding bar 60 is released, and the imaginary line in FIG. As shown, the suction nozzle 44 sucks the thread 22 from the thread tensioning beam 24 to the cut thread end 22b, and threads the thread 22 through the heald 47, completing the threading operation of the thread 22.

In this way, in this embodiment, the thread tensioning beam 23
．． The thread end 22a of the thread 22 stretched between the threads 24 is gripped by the warp chuck 31, and after being cut by the cutter 27, the cut thread end 22b is brought close to the slit 49 of the suction box 48 by the warp holding hook 59. Then, the cut thread end 22b is sucked into the suction chamber 50 through the slit 49.
While being guided, the heald 47 can be threaded by smoothly moving to the suction nozzle 44 using the warp pull-down hook 58 and suctioning the cut yarn end 22 to the suction nozzle 44. Therefore, as in the conventional example described above (see FIG. 12), members with large inertia forces such as the gripping chuck 12 and the arm 14 do not reciprocate with large strokes around the rotation axis 15, and the stroke The large warp pull-down hook 58 is small and lightweight, and the warp holding hook 59 and warp holding bar 60 have a small stroke and are lightweight, so vibrations of the device can be eliminated.

Further, the cut yarn end 22b of the yarn 22 is always connected to the suction box 4.
Since the yarn 22 is suctioned and guided by the suction nozzle 8, the yarn 22 is smoothly sucked into the suction nozzle 44, and twisting of the yarn can be eliminated. As a result, the speed of the threading machine can be increased and the success rate of threading can be improved.

In FIG. 1, a separate compression nozzle is provided on the front surface of the lower end of the suction box 48 to prevent the cut yarn end 22b from coming off the slit 49 until the suction nozzle 44 finishes suctioning the cut yarn end 22b. The end portion 22b can be guided even more smoothly.

(Effects) According to the present invention, the thread end of the stretched thread is held by the thread end gripping means, and after being cut by the cutter, the thread is threaded by the thread gripping and moving means while being suctioned and guided to the suction box. Since it moves smoothly to the suction nozzle for use, vibration of the device and twisting of the thread can be eliminated. therefore,
A shop that speeds up the threading machine and further improves the success rate of threading can be created.

[Brief explanation of the drawing]

1 to 11 are diagrams showing one embodiment of the yarn supplying device according to the present invention, and FIG. 1 is a side view showing the overall configuration thereof, and FIG.
The figure is a front view showing the overall structure, Figure 3 is a partial sectional view showing the restrictor tube and separation suction nozzle, Figure 4 is a front view of the warp chuck, and Figure 5 is V-V in Figure 4. Arrow view, 6th
The figure is the ■-Vl arrow view in Figure 4, and the figure 7 is the ■-■ diagram in Figure 1.
A partial sectional view taken in the direction of arrows, Figures 8, 9, and 11 are side views for explaining its function, Figure 10 is a front view for explaining its function, and Figure 12 shows a conventional yarn feeding device. It is an overall configuration diagram. 22... Thread, 22a... Yarn end, 22b... Cutting thread end, 27... Cutter, 31... Warp Chuck (thread gripping means), 44.
... Suction nozzle, 47 ... Heald, 48 ... Suction box, 49 ... Slit, 57 ... Thread gripping and moving means.

Claims (1)

[Claims] a thread end gripping means for gripping the thread end of a thread stretched in the vertical direction; a cutter provided near the upper part of the thread end gripping means for cutting the thread gripped by the thread end gripping means; A suction nozzle is provided below the means, and threads the thread through the heddle while suctioning the cut end of the thread cut by the cutter, and a suction nozzle is provided between the thread end gripping means and the suction nozzle, and is provided between the thread end gripping means and the suction nozzle. A suction box has vertically facing slits and suction guides the yarn cut by the cutter through the slit, and a suction nozzle from near the yarn end gripping means while the yarn cut by the cutter is suctioned and guided by the suction box. A yarn supplying device comprising: a yarn gripping and moving means for gripping and transporting the yarn up to the point where the yarn is conveyed.