JPS63315645A - Yarn passing meichanism of heald - 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 relates to a heddle threading mechanism for threading a thread through a threading hole of a heddle attached to a loom.

(Prior Art) Conventionally, in this type of threading device, a needle is passed through a threading hole of a heddle, the thread is hooked to the tip of the needle, and the thread is threaded through the threading hole.

(Problems to be Solved by the Invention) However, in such conventional threading devices, threading by the needle is a mechanical movement, so there is a limit to speeding up the threading operation. Moreover, it was difficult to accurately position the heald and thread the thread reliably.

(Object of the Invention) The present invention performs threading by mechanical movement of the needle, uses air to perform threading at high speed without mistakes, and accurately positions the heald to ensure threading. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a threading means that has a passage through which the thread passes and threads the thread through a threading hole formed in the center of the heddle; In a heald threading mechanism comprising a stationary heald magazine having a magazine bar inserted into two guide holes formed at both ends to support a group of healds, the tip of the magazine bar The end of the magazine bar protrudes to a vertical plane passing through the passage of the threading means, and the tip of the magazine bar holds both ends of the heald to position the heald, and the threading means approaches and separates from each other. During threading, a compression nozzle and a suction nozzle are moved close to each other, and the center portion of the heddle is held between the compression nozzle and the suction nozzle to position the heald.

(Function) In the present invention, the heald supported at the tip of the magazine bar is held and positioned by the compression nozzle and suction nozzle of the threading means. Therefore, the heddle is accurately positioned, and the thread is reliably threaded into the threading hole of the heddle at high speed along with the high-velocity air that is ejected from the compression nozzle and sucked into the suction nozzle.

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

1 to 9 are diagrams showing an embodiment of the heald threading mechanism according to the present invention. First, the configuration will be explained.

In Figure 1.2, l] is a belt, ■ is a threading means,
2 is a held magazine. The threading means 1 has a passage through which the thread passes, and threads the thread Y through a threading hole Ha formed at the center of the heald I, and the heald magazines 2 are formed at both ends of the heald H. It has a machining pin 3 that is inserted into the two guide holes Hb to support the heald group, and is installed stationary. The distal end 3a of the magazine par 3 protrudes to a vertical plane passing through the passage of the threading means 1, so that both ends of the heald H can be held by the distal end of the magazine par 3 to position the heald H. There is. The threading means 1 is composed of a compression nozzle 11 and a suction nozzle 12 which are close to each other and separated from each other. It is possible to position the heald H by holding the parts.

The threading means 1 will be explained in detail with reference to FIGS. 3-9.

In FIG. 3, the compression nozzle 11 is provided on one side of the heald H, and the suction nozzle 12 is provided on the other side of the heald H so that it can approach the compression nozzle 11 in the direction of arrow E and move away from it in the direction opposite to the direction of arrow E. It is set in. The suction nozzle 12 has a first nozzle unit 13,
It is divided into a second nozzle unit 14 and a third nozzle unit 15, and when threading the thread, the first nozzle unit 13, second nozzle unit 14 and third nozzle unit 15 are brought close to the heald H and engaged with each other to thread the thread. Later, the first nozzle unit 13, the second nozzle unit 14 and the third nozzle unit
The nozzle units 15 are separated from each other in the direction opposite to the arrow E direction.

It is possible to remove the twill between the first nozzle unit 13 and the second nozzle unit 14, and also to allow the end of the thread threaded to come out between the second nozzle unit 14 and the third nozzle unit 15. There is. Reference numeral 16 denotes a separation means that can separate the heald H supported by the heald magazine 2 and immediately before threading from other healds H, and position the heald H between the compression nozzle 11 and the suction nozzle 12.

The compression nozzle 11 is divided into a fourth nozzle unit 17, a fifth nozzle unit 18, and a sixth nozzle unit 19 in the direction in which the yarn Y passes, and when threading, the fourth nozzle unit 17
, the fifth nozzle unit 18 and the sixth nozzle unit 1
9 are brought close to the heald H and engaged with each other, and after threading, the fourth nozzle unit 17, the fifth nozzle unit 18, and the sixth nozzle unit 9 are separated from each other in the direction opposite to the arrow C direction. 2o is a dropper that can hold the upper and lower parts of the dropper D and position the dropper D between the fourth nozzle unit 17 and the fifth nozzle unit 18 and between the fifth nozzle unit 18 and the sixth nozzle unit 19. It is a positioning means. Note that the first nozzle unit 13, second nozzle unit 14, and third nozzle unit 15 of the suction nozzle 12 and the fourth nozzle unit 17, fifth nozzle unit 18, and sixth nozzle unit 19 of the compression nozzle 1 are engaged with each other. A cam, a rotating shaft, or any other actuating body may be used as a means for moving or separating.

3 to 6, the first nozzle unit 13 of the suction nozzle 12 consists of a first block 21 and a second block 22, the first block 21 is supported by a support stand 23, and the second block 22 is supported by a swing arm 24. is rotatably supported via a bin 25. The swinging arm 24 is swingably supported on the support base 23 by a bin 26, and is connected to a rod 28 via a bin 27. By moving the rod 28 up and down, the swinging arm 24 swings, and the first block 2
The first and second blocks 22 move toward and away from each other. The second block 22 has a spring 29
The second block 22 is urged to approach the first block 21 by the second block 22, so that when the second block 22 engages with the first block 21, the shock between the two blocks is absorbed.

A nozzle passage 30 is formed in the first block 21 and the second block 22, and has a cross-sectional area that gradually decreases in the direction in which the yarn Y passes, that is, in the direction A of air flow. The nozzle passage 30 has a substantially rectangular cross-sectional shape, and the tapered surface of the first block 21 is formed flat to form one lower side of the rectangle, and the tapered surfaces forming the other three sides of the rectangle form the second block 22. 5, so that when the second block 22 is separated from the first block 21, the thread can be easily pulled out in the direction of arrow B in FIG. In addition, in order to make it easier to unwind the thread Y, the first block 2
Although it is necessary to make the tapered surface of the first block 1 as flat as possible, the side or curve of the cross section forming the nozzle passage 30 in the second block 22 is arbitrary. Two nozzles 31 and 32 are formed in the first block 21, and a spout 31a of the nozzle 31 is formed.
is opened in a notch 33 formed on the tapered surface, and the nozzle 3
The second jet port 32a opens near the outlet end of the nozzle passage 30. Then, by jetting compressed air from the nozzle 31, the nozzle passage 30 is brought into a vacuum state, and by jetting compressed air from the nozzle 32, the nozzle passage 30 is brought into a vacuum state.
The air ejected from zero is accelerated.

Note that the second and third nozzle units 14. of the suction nozzle 12.
15 and the 4.5th nozzle unit 1 of the compression nozzle 11
7.18 has exactly the same structure and function as the first nozzle unit 13 described above, so a description thereof will be omitted.

Further, a vacuum suction pipe 34, which is a vacuum suction means, is provided behind the third nozzle unit 15, that is, on the downstream side in the air flow direction, and the vacuum suction pipe 34 is in close contact with the third nozzle unit 15 and is integral with the third nozzle unit 15. 3rd while moving
Air is sucked from the outlet end of the nozzle unit 15 in the direction of arrow A in FIG. 3 to increase the suction force of the suction nozzle 12.

The compression nozzle 11 is configured to eject compressed air to the suction nozzle 12 side, and the fourth to sixth nozzles 17 to 19
When engaged, the sixth nozzle unit 19 is in contact with the heald H. 7 to 9, compression nozzle 1
1, the sixth nozzle unit 19 consists of a first block 41 and a second block 42, the first block 41 is supported by a support stand 43, and the second block 42 is rotatably mounted on a swing arm 44 via a bin 45. Supported. The swinging arm 44 is swingably supported on a support base 43 by a bin 36, and is connected to a rod 48 via a bin 47. By moving the rod 48 up and down, the swinging arm 44 swings, and the first block 41 and second block 42 are moved toward and away from each other. 2nd block 4
2 is urged by a spring 49 to approach the first block 41, so that when the second block 42 engages with the first block 41, the shock between them is absorbed.

A nozzle passage 50 is formed in the first block 41 and the second block 42, and has a cross-sectional area that gradually decreases in the direction in which the yarn Y passes, that is, in the air flow direction A. The nozzle passage 50 has a substantially rectangular cross-sectional shape, and the tapered surface of the first block 41 is formed flat to form one lower side of the rectangle, and the tapered surfaces forming the other three sides of the rectangle form the second block 42. 7, so that when the second block 42 is separated from the first block 41, the yarn can be easily pulled out in the direction of arrow B in FIG. In addition, in order to make it easier to unwind the thread Y, the first block 4
Although it is necessary to make the tapered surface of the second block 42 as flat as possible, the side or curve of the cross section forming the nozzle passage 50 in the second block 42 is arbitrary. The first block 41 has nozzle 5.
1 is formed, and the ejection port 51a of the nozzle 51 opens into a notch 53 formed in the tapered surface.

Then, by jetting compressed air from the nozzle 51, the nozzle passage 50 is brought into a vacuum state, and at the same time, the compressed air is jetted from the outlet end of the nozzle passage 50 to the suction nozzle 2 side through the thread passage hole 1a of the heald H. I have to.

Next, the effect will be explained.

1 to 9, first, the heald H supported by the heald magazine 2 and just before threading is positioned between the compression nozzle 11 and the suction nozzle 12 of the threading means 1 by the separating means 16, and the romper D is moved to the dropper. Positioning is performed by positioning means 20. Next, compression nozzle 1
1, the fourth nozzle unit 17, the fifth nozzle unit 18
, the sixth nozzle Unisoto 19 and the first suction nozzle 12
The nozzle unit 13, the second nozzle unit H4, and the third nozzle unit 15 are moved in the directions of arrows C and E in FIG. 3 to approach and engage with each other, thereby holding the heald H between them.

Therefore, since the central part of the heald I-1 is held between the compression nozzle 11 and the suction nozzle 12, and both ends of the heald are held at the tip of the magazine par 3, the threading hole of the heald H is set at a predetermined position, i.e. , nozzle passage 3
It can be reliably positioned on the center line of 0.

Further, at this time, the center portion of the heald H is perpendicular to the passing direction of the yarn Y, so that compressed air from the compression nozzle 11 can pass through the yarn passage hole Ha of the heald H. At the same time, the dropper D also moves between the fourth nozzle unit 17 and the fifth nozzle unit 18 and between the fifth nozzle unit 18 and the sixth nozzle unit.
It is held between the nozzle unit 19. At this time, all the nozzle units 13-15, 17-19 are connected to the first block 21.41 and the second block 22.4.
2 are closed by engaging with each other. In this state, all nozzle units 13 to 15.17
Compressed air is ejected from the nozzles 31 and 32 of ~19 and the nozzle 51 to jet the air at high speed in the direction of arrow A in FIG.
It is arranged so that it can travel together with air at high speed from the fourth nozzle unit 17 of the compression nozzle 11 to the vacuum suction pipe 34.

Therefore, since the yarn Y is transferred from the fourth nozzle unit 17 of the compression nozzle 11 to the third nozzle unit 15 of the suction nozzle 2 by air with a high air flow rate, The thread Y is threaded through the through hole instantly.In addition, air is sucked by the vacuum suction pipe 34 on the downstream side of the suction nozzle 12 in the air flow direction, and the suction force of the suction nozzle 12 increases, further increasing the air flow rate. It is larger and allows you to thread the thread reliably and efficiently.

Then all nozzle units 13-15, 17-1
By stopping the compressed air supplied to the nozzles 31, 32 and 51 of Nozzle 9, and separating the first block 21, 41 and second block 22, 42 of all nozzle units 13-15, 17-19. Open all nozzle units 13-15, 17-19.

This opening is effected by moving the rod 28.48 upwards and pivoting the swinging arm 24.44. At the same time, all nozzle units 13-15, 17-19
are moved in the direction opposite to the directions of arrows C and E in FIG. 3 to separate them from each other, thereby releasing heald I-1 and dropper 〇 from the grip. Next, the heald H and dropper D through which the thread Y has been threaded are moved in the direction of arrow B in FIG. The twilling of thread Y is carried out by passing the string through it.

(Effects) According to the present invention, there is a threading means which has a passage through which the thread passes and does not pass the thread through the threading hole formed in the center of the heddle, and two guides formed at both ends of the heddle. A heald threading mechanism comprising a stationary heald magazine having a magazine par inserted into a hole to support a group of healds, wherein a tip end of the magazine bar passes through a passage of the threading means. The threading means includes a compression nozzle and a suction nozzle that approach and separate from each other, and the threading means is composed of a compression nozzle and a suction nozzle that move toward each other and move away from each other. The nozzle and suction nozzle are brought close to each other, and the center of the heald is held between the pressure nozzle and the suction nozzle to position the heald. Accurate positioning is possible, and high-velocity air ejected from the compression nozzle and sucked into the suction nozzle allows for reliable threading at high speed and without mistakes.

[Brief explanation of drawings]

1 to 9 are views showing one embodiment of the threading mechanism according to the present invention, FIG. 1 is a perspective view showing the main part configuration of the heald threading mechanism, and FIG. 2 is a perspective view of the heald magazine. 3 is a front view showing the structure of the threading means, FIG. 4.5 is a front view showing the structure near the suction nozzle, and FIG. 6 is Vl-VI of FIG. 5. 7.8 is a front view showing the configuration near the compression nozzle,
FIG. 9 is a sectional view taken along the line IX-IX' in FIG. 8. DESCRIPTION OF SYMBOLS 1... Threading means, 2... Heald magazine, 3... Magazine bar, 3a... Tip part, 11... Compression nozzle , 12... Suction nozzle, 30.50... Nozzle passage (passage), ■]...
... Heald, Ha ... Thread passing hole, Hb ... Guide hole, Y ... Thread.

Claims (1)

[Claims] A threading means that has a passage through which the thread passes, threads the thread through a threading hole formed in the center of the heddle, and is inserted into two guide holes formed at both ends of the heddle to support the heald group. A heald threading mechanism includes a heald magazine that is stationary and has a magazine bar, and the tip of the magazine bar protrudes to a vertical plane passing through the passage of the threading means, and the tip of the magazine bar The threading means includes a compression nozzle and a suction nozzle that approach and separate from each other, and the threading means moves the compression nozzle and the suction nozzle closer to each other during threading. A heald threading mechanism characterized in that the heald is positioned by holding the central part of the heddle between a nozzle and a suction nozzle.