JPH11106147A - Multisplicer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correspond to ending of various wool yarn by providing a timing control means to start sir blowing of an ending nozzle while an untwisting nozzle works. SOLUTION: When twisting of yarn ends YP1, YB1 is untwisted to a state suitable for ending by untwisting nozzles 5, 6, a yarn handler lever 10 works again while the untwisting nozzles 5, 6 keep working and draws out the yarn ends YP1, YB1 from the untwisting nozzles 5, 6 while guiding them. Continuously, the untwisted yarn ends are accumulated on each other at specified positions of an ending nozzle 2 and auxiliary nozzles 3, 4, and air blowing of the ending nozzle 2 is started. consequently, when air blowing of the ending nozzle 2 is started in the middle of air blowing of the untwisting nozzles 5, 6, ending of the ending nozzle 2 is carried out while the untwisting state of the untwisting nozzles 5, 6 is held as long as possible and tensile force is added, and accordingly, it is possible to certainly carry out ending regardless of a kind of yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-splicer in which auxiliary nozzles are arranged on both sides of a splicing nozzle for splicing yarn ends simultaneously.

[0002]

2. Description of the Related Art Two yarn ends are inserted into a piecing nozzle so that the yarn ends face in opposite directions to each other, and compressed air (compressed air) is jetted into the piecing nozzle to form the two yarn ends. A splicer that splices a yarn end portion by applying an action such as vibration, entanglement, twisting, or the like to the overlapped portion of the yarn end is well known.

[0003] This known splicer is suitable for splicing long fiber spun yarn such as ordinary cotton yarn. But,
When a known splicer is applied to a woolen yarn composed of short fibers, winding of the seam becomes insufficient, and an insufficient seam is formed in terms of appearance and yarn strength.

Therefore, a so-called three-stage nozzle type pricer in which auxiliary nozzles are provided on both sides of a yarn splicing nozzle that splices yarn ends simultaneously, and untwisting nozzles that unravel the yarn ends on both sides of the auxiliary nozzles is provided. Proposed.

[0005] First, in order to make the two yarn ends suitable for piecing, untwisting is performed by the untwisting nozzle. After the untwisting is completed, the yarn ends are introduced into predetermined positions of the piecing nozzle and the auxiliary nozzle. First, air blowing of the piecing nozzle is started. Next, at the same time as the piecing nozzle or with a slight delay, air blowing of the auxiliary nozzle is started to complete the piecing. It has been confirmed that it is effective for a so-called woolen yarn composed of short fibers such as wool.

[0006]

However, when the splicer having the above-mentioned structure is used to splice a worsted yarn having high fineness and high fineness, the winding of the seam is insufficient and the yarn strength is low. It turned out to be short. Here, the worsted yarn is a wool yarn obtained by opening wool fibers, combing them together, excluding short fibers, and arranging the fibers of uniform length in parallel on a straight line, and more specifically, 2.54 cm. The wool of the above-mentioned high quality is satisfactorily rubbed so that the fibers are stretched in a straight line, and at the same time, the respective fibers are arranged in parallel and twisted to form a yarn.

In order to form a seam with such a worsted yarn at a predetermined yarn strength, several types of three-stage nozzle type pricers having different shapes and specifications of yarn splicing nozzles and untwisting nozzles according to the count and the number of twists. It has been empirically found that it is necessary to use different (hereinafter referred to as multi-splicer). Therefore, when a multi-splicer is applied to an automatic winder to change a thread type to change a thread type, there is a problem that replacement of the multi-splicer requires much trouble.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a multi-splicer capable of coping with piecing of various yarns. It is in.

[0009]

In order to solve the above-mentioned problems, the present invention is based on the knowledge obtained in an experiment in which the shape of each nozzle of the splicer and the timing of air blowing are varied, and the characteristics of the splicer with respect to the yarn are examined. completed.

According to the first aspect of the present invention, there is provided a multi-splicer in which auxiliary nozzles are provided on both sides of a piecing nozzle for piecing the yarn ends simultaneously, and untwisting nozzles for loosening the yarn ends are provided outside the auxiliary nozzles. And a timing control means for starting air blowing of the piecing nozzle during operation of the untwisting nozzle.

According to a second aspect of the present invention, in the first aspect, the timing control means starts air blowing of the auxiliary nozzle after stopping the air blowing of the piecing nozzle.

According to a third aspect of the present invention, in the first or second aspect, a pressure adjusting means for adjusting the air pressure of the untwisting nozzle is provided.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the multi splicer, FIG. 2 is a top view of the multi splicer, and FIG. 3 is a cross-sectional view of each nozzle.

1 and 2, a multi-splicer 1 includes a piecing nozzle 2, auxiliary nozzles 3 and 4 arranged on both sides of the piecing nozzle 2, and a multi-splicer 1 disposed on both sides outside the auxiliary nozzles 3 and 4. Supplying compressed air to the untwisting nozzles 5 and 6 to be performed, the pressure adjusting valve 40 and the first electromagnetic on-off valve 41 provided in the air pipe for supplying compressed air to the untwisting nozzles 5 and 6, and the piecing nozzle 2 A second electromagnetic on / off valve 42 provided on an air pipe for supplying compressed air to the auxiliary nozzles 3 and 4; a third electromagnetic on / off valve 41 provided on an air pipe for supplying compressed air to the auxiliary nozzles 3 and 4; And a control unit 44 for controlling on / off of 42 and 43 as a main part.

The multi-splicer 1 having such a configuration
Is installed on an automatic winder. The yarn YB on the bobbin side and the yarn YP on the package side in the automatic winder are suction-held by the relay pipe 13 and the suction mouth 14, respectively, and guided by the multi-splicer 1. And
The multi-splicer 1 includes a yarn holding device 7, yarn cutting devices 8, 9, a yarn pulling lever 10, and yarn clamping devices 11, 12 for controlling the yarn path of the guided yarn.

The splicing nozzle 2 is provided with a splicing hole 15 and a slit 16 for inserting the bobbin-side yarn end and the package-side yarn end so that they face in opposite directions, and are overlapped with each other.
It is formed as shown in FIG. The splicing holes 15 are formed with ejection holes 17 and 18 for ejecting compressed air.
In the illustrated example, the ejection holes 17 and 18 in which the direct hit flow acts on both yarn ends YB and YP positioned at the innermost position with respect to the slit 16 are different from each other in the center axis direction of the nozzle hole 15. One drilled at two positions is shown. However, the present invention is not limited to the illustrated example, and various types of nozzles, such as a type for applying a swirling flow and a type having a single injection hole, are applicable.

Auxiliary nozzles 3 and 4 are provided on both sides of the piecing nozzle 2 with a slight gap. That is, a slight distance S from the end surfaces 2a and 2b of the piecing nozzle 2
In addition, auxiliary nozzles 3 and 4 are provided so that the air flow inside the piecing nozzle 2 and the air flow inside the auxiliary nozzles 3 and 4 do not directly interfere with each other. As shown in FIGS. 3B and 3C, the auxiliary nozzles 3 and 4 have substantially the same shape and size as the splicing nozzle 2, and
20, slits 21 and 22 extending over the entire area for inserting a yarn into the yarn splicing hole, and compressed air injection holes 23 and 24 that are tangentially opened on the inner peripheral surface of the nozzle are formed. The swirling directions of the air flows ejected from the injection holes 23 and 24 are opposite to each other, and the winding of the leading end of the yarn end around the parent yarn is promoted.

On both sides outside the auxiliary nozzles 3 and 4,
As shown in FIG. 1, tubular untwisting nozzles 5 and 6 for sucking the yarn end by the action of compressed air and untwisting are arranged. Further outside the untwisting nozzles 5, 6, guide plates 29, 3 having guide grooves 25, 26, 27, 28 for individually inserting yarns guided by the relay pipe 13 and the suction mouth 14, respectively.
0 is placed.

A yarn end of the yarn YP on the suction mouth side;
Inside the guide grooves 25, 28 for inserting the yarn ends of the yarn YB on the relay pipe side, cutters 8, 9 for cutting the yarns YB, YP are arranged. The yarn ends cut by the cutters 8 and 9 are sucked into the untwisting nozzles 5 and 6.

A guide groove 2 for inserting the main thread portion of the yarn YB on the bobbin side and the main thread portion of the yarn YP on the package side, respectively.
Clamp devices 12 and 11 for holding the respective yarns YB and YP are arranged outside the yarns 6 and 27. A yarn pulling lever 10 that draws the yarns YB and YP guided by the relay pipe 13 and the suction mouth 14 to the multi-splicer 1 and places each yarn at a predetermined position in the guide grooves 25 to 28 is provided beside the yarn splicing nozzle 2. Is established.

In FIG. 1, the start (on) and the stop (off) of air blowing to the piecing nozzle 2, the auxiliary nozzles 3, 4 and the untwisting nozzles 5, 6 are controlled by electromagnetic on-off valves 41 to 4.
3 and the control unit 44 for them. That is,
The electromagnetic on-off valves 41 to 43 and the control unit 44 constitute timing control means for blowing air to the piecing nozzle 2, the untwisting nozzles 5, 6 and the auxiliary nozzles 3, 4. In the illustrated example, air blowing of the piecing nozzle 2 is started while the untwisting nozzles 5 and 6 are operating (see the overlapped portion at time t1), and after stopping the air blowing of the untwisting nozzles 5 and 6, the piecing nozzle is stopped. It is the timing to stop the air blowing of No. 2 (refer to the delay of time t2). Further, after the air blowing of the piecing nozzle 2 is stopped, the air blowing of the auxiliary nozzles 3 and 4 is started (refer to the interval of time t3). Further, the pressure of the compressed air to the untwisting nozzles 5, 6 can be changed by a pressure adjusting valve (pressure adjusting means) 40 which can be adjusted manually or automatically.

The piecing operation of the multi-splicer having the above structure will be described below. In FIG. 4A, the yarns YP and YB on both sides of the yarn splicing nozzle 2 are
1, 12 and the yarn pulling lever 10 operates,
The rod 31 in FIG.
2, the thread is cut in a state where the levers 34 and 35 rotate clockwise about the support shaft 33 as a fulcrum. In addition,
When the yarn pulling valley 10 and the yarn cutting devices 8 and 9 are operated, the yarn presser 7 is on standby at the position indicated by the two-dot chain line 7a in FIG.

Next, as shown in FIG. 4B, when the yarn ends YP1 and YB1 are sucked by the untwisting nozzles 5 and 6, the yarn moving lever 10 moves in the direction 36 away from the yarn at the same time or before and after the yarn ends. Then, the yarn ends YP1 and YB1 are sucked into the untwisting nozzle, and as described with reference to FIG. 3, the twist is unwound into a state suitable for piecing by injection of compressed air. At this time, the pressure of the compressed air is changed using the pressure adjusting valve 40 in accordance with the twist coefficient of the yarn. When the twist coefficient is small, untwisting is performed with compressed air at a low pressure, and when the twist coefficient is large, untwisting is performed with compressed air at a high pressure.
It is desirable that the suction of the untwisting nozzles 5 and 6 be started immediately before the yarn is cut by the cutting devices 8 and 9 so that the yarn end immediately after the yarn is cut is sucked.

The yarn ends YP1, YP are released by the untwisting nozzles 5, 6.
When B1 is untwisted in a state suitable for piecing,
While the operation of the untwisting nozzles 5 and 6 is continued, the yarn pulling lever 10 is operated again as shown in FIG.
The untwisted yarn ends are pulled out from the untwisting nozzles 5 and 6 while guiding the YB1 and the untwisted yarn ends are mutually attached to the yarn joining nozzle 2 and the auxiliary nozzle
4 and the piecing nozzle 2 is started to blow air. This state corresponds to the first electromagnetic on-off valve 41 and the second electromagnetic on-off valve 4 at time t1 in the control unit 44 of FIG.
2 corresponds to the state of the overlapping portion of the operation.

At this time, while the piecing nozzle 2 is operated, one lever 35 of the yarn pulling lever 10 is
7 to the position where it comes into contact with the
The thread press plates 38 and 39 of FIG.
To bend the yarn between the auxiliary nozzle 3 and the lever 35 and between the auxiliary nozzle 4 and the lever 34.
The yarn ends YP1 and YB inserted into the untwisting nozzles 5 and 6 by the yarn pulling lever 16 and the yarn holding device 7, respectively.
1 is a piecing hole 15 of the piecing nozzle 2 and an auxiliary nozzle 3,
4 are drawn into the holes 19 and 20 of each other, and the respective yarn ends YP
The positioning is set with the YB1 and YB1 in contact with each other. This state corresponds to the state of the single operation of the second solenoid valve 42 at the time t2 in the control unit 44 in FIG.

As described above, when the air spouting of the yarn splicing nozzles is started in the middle of the air spouting of the untwisting nozzles 5 and 6, the untwisting state of the untwisting nozzles 5 and 6 is maintained as much as possible while maintaining tension. Since the piecing of the piecing nozzle 2 is performed, it is assumed that the piecing is reliably performed regardless of the type of the yarn.

After the yarn splicing by the yarn splicing nozzle 2 is completed, as shown in FIG.
Compressed air is injected from 3, 24 (see FIG. 3). This state corresponds to the state of the single operation of the third solenoid on-off valve 43 after the time t3 in the control unit 44 in FIG.

As described above, when the auxiliary nozzles 3 and 4 are operated after the operation of the piecing nozzle 2, the piecing by the piecing nozzle 2 is reliably performed, and the piecing nozzle 2 assists both ends where twisting is difficult. It is assumed that the function sharing that the nozzles 3 and 4 perform twisting in a complementary manner becomes clear.

[0029]

EXAMPLE A worsted yarn having a count of 30 and a twist of 1000 T / M and a woolen yarn having a count of 16 and a twist of 700 T / M were spliced using the same multi-splicer and subjected to a seam repetitive load test. In the seam repetitive load test, a 30-gram weight was applied to the seam, the seam was shaken up and down 1000 times, and the number of seams out of the 100 seams was examined.

With respect to the tamping of the untwisting nozzle, the piecing nozzle and the auxiliary nozzle, the operation of the untwisting nozzle and the piecing nozzle is delayed by the time t11, and the auxiliary nozzle is operated with a delay of the time t12 from the stop of the piecing nozzle. The present invention is referred to as Example 1 of the present invention, and the operation of the untwisting nozzle and the piecing nozzle is delayed for a time t21, and the operation of the piecing nozzle and the auxiliary nozzle is doubled for a time t22. The splicing nozzle is operated with a delay of time t31 from the stop of the nozzle, and the splicing nozzle and the auxiliary nozzle are operated at time t31.
Table 1 shows the results obtained when a sample in which only 32 was dubbed was used as a comparative example. In Examples 1 and 2 of the present invention, it is understood that seams having a high thread strength can be formed without being limited to the worsted yarn or the spun yarn.

[0031]

[Table 1]

[0032]

According to the first aspect of the present invention, while the untwisting nozzle is in operation, the timing control means for starting the air blowing of the splicing nozzle allows the multi-splicer having the same shape to be used for both the worsted yarn and the spun yarn. The splicer can be spliced, eliminating the need to replace the multi-splicer when changing the mechanism for changing the type of yarn.

According to the second aspect of the invention, in addition to starting air blowing of the piecing nozzle during operation of the untwisting nozzle, air blowing of the auxiliary nozzle after stopping air blowing of the piecing nozzle. Is performed, the splicing by the splicing nozzle can be reliably performed.

According to the third aspect of the present invention, in addition to the above-mentioned timing control means, pressure adjusting means for adjusting the air pressure of the untwisting nozzle is used to stabilize the splicing of worsted yarns having different numbers and twists. I can do it.

[Brief description of the drawings]

FIG. 1 is a front view of a multi splicer of the present invention.

FIG. 2 is a top view of the multi-splicer of the present invention.

FIG. 3 is a sectional view of each nozzle.

FIG. 4 is a diagram illustrating an operation state of the multi-splicer of the present invention.

FIG. 5 is a view showing an operation state of the multi-splicer of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Multi splicer 2 Splicing nozzle 3 Auxiliary nozzle 4 Auxiliary nozzle 5 Untwisting nozzle 6 Untwisting nozzle 40 Pressure adjusting valve (pressure adjusting means) 41 First electromagnetic on-off valve (timing control means) 42 Second electromagnetic on-off valve (timing control) Means) 43 fourth electromagnetic on-off valve (timing control means) 44 control unit

Claims (3)

[Claims] 1. A multi-splicer in which auxiliary nozzles are provided on both sides of a yarn splicing nozzle for simultaneously splicing yarn ends, and untwisting nozzles for loosening the yarn ends are provided outside the auxiliary nozzles. A multi-splicer provided with timing control means for starting air blowing of the piecing nozzle during operation of the twist nozzle. 2. The multi-splicer according to claim 1, wherein said timing control means starts air blowing of said auxiliary nozzle after stopping air blowing of said piecing nozzle. 3. The multi-splicer according to claim 1, further comprising pressure adjusting means for adjusting an air pressure of said untwisting nozzle.