JPS59125925A - Spun yarn ending - Google Patents

Abstract

PURPOSE:Two whirling fluid different in whirling direction are made to act on the overlapped part of 2 yarns in the yarn-ending hole at 2 different positions to make the ending part almost equal thickness and strength to the single yarn. CONSTITUTION:Two yarns YP and YB are overlapped in the yarn-ending hole so that the yarn ends oppose to each other and their ends A1 and B1 are made free. Two whirling fluid in the opposite directions are made to act on the overlapped yarn at two different positions C1 and C2 in the yarn-ending hole. At the connection Y1, a filament is really twisted in the same direction as in the whole connection (Z-twist) and the filament ends mix with one another and are twisted into one integrated yarn.

Description

[Detailed description of the invention] The present invention relates to a spun yarn splicing method.

Two yarn ends are spliced by applying compressed fluid to the overlapping yarn ends.

Devices that perform such yarn splicing, such as U and S.

In the device shown in P4002012, two yarn ends are inserted into a yarn splicing hole so that the yarn ends face in opposite directions,
By blowing compressed air into the yarn splicing hole, the overlapping part of the Niei ζ ends vibrates or turns, intertwining the yarn ends and performing the yarn splicing. Clamp both of the two positions of the mating part at the same time,
If the overlapping portion of the ends of two yarns of specific dimensions bundled in a specific section is turned, the fibers at the ends of the two yarns between the clamp points will be wrapped by false twisting, and the yarn will be spliced. , the tip of the yarn end of the clamp portion protrudes from both ends of the seam and remains as a so-called corner.

These corners may get caught in knitting needles in the subsequent weaving process, causing yarn breakage and degrading the quality of cloth and textiles.

Furthermore, according to the above-mentioned device, there is a part where the yarn ends are wrapped in the opposite direction to the yarn's inherent twist direction at the seam, resulting in a double thread shape.
Sufficient thread strength and thread thickness will not create seams.

That is, by applying a unidirectional jet swirling air flow to approximately the middle of the overlapping portion of both yarn ends, the overlapping portion is ballooned, and the yarn ends on both sides of the point of application of the compressed air are twisted in the opposite direction. Because of this, the yarn ends are twisted in the same direction as the unique twist of the threads to be spliced, and are twisted in the opposite direction.

Therefore, one side of the seam has a high strength, but the other side has a low strength, and since the maximum tensile strength is determined by the weak point, the joint as a whole has low strength.

The present invention was made to solve the above problems, and
To provide a yarn splicing method in which yarn strength and seam thickness are approximately equal to those of single yarns to be spliced.

That is, the feature of the present invention is that the threads to be spliced have a unique twist in one direction, and the thread ends of both threads are inserted into the thread splicing hole in an overlapping manner so that the thread ends face in opposite directions. The tip is in a free state, and a swirling fluid flow in opposite directions is applied to at least two different positions of the overlapping portion in the yarn splicing hole, and the direction of the swirling flow is the direction in which each original yarn is untwisted. By doing so, the seam formed has a real twist in the same direction as the original twist of the original yarn, and has a structure that is extremely close to the yarn structure of the original yarn, and has a structure that is very similar in terms of yarn strength, elongation, number of twists, etc. It is possible to obtain seams similar to those made with single yarn.

The principle of the yarn splicing method of the present invention will be explained with reference to FIG.

In addition, "Yarn J" used in the following explanation includes natural fibers such as cotton, wool, and hemp, so-called stable fibers made by shortening synthetic long fibers, and spun yarns made by electrically binding mixed fibers of these fibers. However, it may be possible to apply the combined endless long fiber to the present invention by partially changing the setting conditions.

Further, it is assumed that the "yarn" has a number of twists per inch, which is unique to the system, due to the spinning process, and the twists are distributed almost uniformly over the entire length of the yarn.

In Fig. 1, one thread is cut and the thread end α′F) egg R
The yarns are stacked parallel to each other or crossed so that the tips of the yarn ends are in opposite directions, and the yarn splicing is prepared with the tips of the yarn ends untwisted.

The untwisted part is a part where the twist inherent in the yarn is almost zero or has a twist number smaller than the number of twists inherent in the yarn, and is preferably in a non-twisted state in which the fibers constituting each group are approximately parallel. There is.

Furthermore, the tip of the yarn end of each group (YPI (YB)) is in a free state without being bundled, while the yarn portion at a certain distance from the tip of the yarn end is clamped, and the clamp point El) Beyond (K2), the twist propagates and is considered a fixed point.

In this state, two positions (CI) with different overlapping regions
At (t-:2), both threads (b) σ uniform in different directions 1)
Turn to 2).

That is, the above swirling direction is related to the unique twisting direction of the yarn to be spliced, and the swirling direction at position c, 1) is between the clamp point F, 1) of the yarn (b) and the heating point (C1) due to swirling. is set to the direction Q(1) in which the inherent twist of the yarn is untwisted, and similarly the direction of rotation at position 1c2) is
2) in the direction in which the twist inherent in the yarn between the clamp point stem 2) and the heating point (W) is untwisted. The thread shown (YP
I(2) shows the case where the twist is unique in the Z direction, and of course when the twist is S twist, the twist is υ in the turning direction.

2) is considered to be the opposite direction.

Note that as a means for swirling the yarn, a swirling flow by fluid jetting is applied, and the most easily available airflow is used.

The behavior of the thread caused by the above swirling action will be explained next.

For purposes of explanation, the area from the clamp point 62) of the yarn ('I'B) to the tip of the yarn end is divided into areas 01) to (A4).

That is, the area (A1) is the area between the swirling flow imparting point (CI) and the tip of the yarn end, and the area (A2) is the center position (ro) between the swirling flow imparting point C,1) and the swirling point (CI) (C2). )to,
Area (A3) indicates each area from the turning point (C2) to the turning point (C2), and the area (A◇ indicates the area from the turning point (C2) to the clamp point 62), and similarly for yarn (2), from the tip of the yarn end to the )
Due to the flow, the yarn areas (A1) (A2) and the yarn areas (B3) (B4) turn in the same direction as the arrow 1) direction.

At this time, the heating power of S twist is applied to the yarn in area (AI) (B4), the heating power of Z twist is applied to the yarn in area @2) (B3), but the heating power of Z twist is applied to the yarn in area (YJI) ( Since A1) is in a free state, that is, an open-end state, S
The twist disappears, and the actual twist of Z twist remains in the area (A2), and the loosened fibers of the area (A2) and (A3) entangle and coalesce with each other, and are twisted into the Z twist in the area @1). The yarn end is passed through the yarn (YP) in the zone (B4) in the Z direction and heated.

If the yarn in area Q34) is also in an unraveled state, further (
The fibers in the Al) (A4) region are also intertwined and combined to form a single Z-twisted thread.

Note that since the area (B4) of the yarn (YP) rotates in the direction of untwisting the yarn, untwisting tends to occur, but if the rotation of the yarn in area (33) (B4) is prevented as much as possible, , the yarn end of the (Al) (A2) portion of the yarn (YB) mainly turns around the yarn (3), and the yarn ('l'Bl)
While the own yarn is heated to Z twist, there is also Z twist around yarn (6).
This results in a state where it wraps around in the direction.

Furthermore, the same situation as described above occurs when turning in the direction of arrow 2) at the turning point (C2), and since the tip 1) of the thread (YP) is in a free state, the area Q3 of the thread (B)
While the Z twist is imparted to 2), the fibers of the area Φ1) (B2) become entangled with the fibers of the thread (B) and coalesce into a single thread, which is attached in the Z direction.

Therefore, the yarn end (AI) of the yarn V (A2) on the (CI) side from the intermediate point M of the turning point (CI) (C2) is the yarn σD
Area (B4) (B3) is wound while being heated in the Z direction, that is, in the same direction as the yarn's unique twist direction, and from the midpoint M (C
2) Side yarn end (Bl) (B2) is area α4 of yarn (C)
) (A3) is wound while being heated in the Z direction, that is, in the same direction as the yarn's unique twisting direction, so that the twist in the same direction as the original yarn twisting direction enters the entire seam range, and the yarn ends before yarn splicing. Due to the untwisted state 1 of the overlapped portion, the joint after yarn splicing has a structure similar to that of the original yarn.

The seams spliced in this way are shown in FIGS. 2 and 3.

Figure 2 is a sketch of a seam when the yarn ends are untwisted over the entire area where the yarn ends overlap. It can be seen that there is a real twist (Z twist) in the same direction, so there is no distinction between the two threads, and the fibers at the end of each thread are mixed and combined into a single thread. In this case, a high-quality seam is obtained in which the yarn properties of the seam are almost as good as those of the single yarn of the original yarn.

Furthermore, there are no corners where both ends of the yarn protrude.

Figures 3 (a) to 3) schematically show the differences in the seam structure formed due to the difference in the untwisted state of the overlapping yarn ends, and the seam σ2 shown in Figure 3 (a) ) is the turning ＼ flow imparting point kl) Between (C2), the fibers are tightly intertwined and mixed together so that they cannot be distinguished from each other, forming a single thread-like part (Y2a), which is different from the twist direction unique to the original thread. The threads are twisted in a consistent manner (Z-twist), and the thread ends on both sides are entwined on top of each other, and in this case it is thought that the threads were spliced under the untwisted state shown in the first figure.

In addition, the intertwined part (Y2b) on the top 1 side ('l'
In 2b), the yarns are entangled in the same direction as the twist inherent in the yarn, contributing to yarn strength to some extent.

Figure 3 (splice seam σ3) is the opposite case to (a), where the two yarns are separated between 1) and (C2) at the point where the swirling flow is applied, and are entangled in the same direction as the unique twist of the yarn. , the yarn end portions on both sides are closely mixed and spliced into a single thread.

Furthermore, the seam σ4) (Y5) in Figure 3 (c) is
Two threads are entangled on either side of the outside of the point where the swirling flow is applied.

As shown in the examples of each thread seam above, in any case, regardless of the area where each thread end is combined into a single thread, or the area where two threads are entwined in a distinguishable manner, the seam is formed through the seam metal body. The twist direction of the yarn is that the actual twist is in the same direction as the twist direction specific to the yarn to be spliced.

Therefore, the yarn properties such as yarn strength, yarn thickness, elongation, and number of twists are almost the same as those of single yarn.

Note that the seams shown in Figures 3 (a) to 3) above are shown schematically and are subject to various conditions such as air pressure, air volume, inner diameter of the air jet nozzle, angle of the nozzle jet hole, number of jets, etc. This results in variously deformed seams.

Furthermore, the seams may be deformed in various ways depending on the type of yarn being spliced, the fiber length, the untwisted state, etc.

Next, an embodiment of the above seam forming apparatus will be described with reference to the drawings.

Figure 4 shows a schematic diagram of an automatic wine goo to which the yarn splicing device is applied, in which a shaft (2) and a suction pipe (3) are installed between each side frame (1), and a winding unit (4) is connected to the shaft. (2), and during automatic wine goo operation, the unit (4) is also placed on the pipe (3) and fixed as appropriate.

Note that the pipe (3) is connected to a blower (not shown), and a suction air current is constantly applied thereto.

The bobbin (B) in the winding unit (4)
) to the package (g) is rewinded from the peg (
5) The thread (Yll) pulled out from the upper bobbin (c) passes through the guide (6), tensor (7), and detection device (8) that also serves to detect and cut thread unevenness such as slabs and to detect thread running. Package D rotated by drum (9)
rolled up.

At this time, when the detection device (8) detects yarn unevenness in the yarn, a cutter installed near the detection device operates to cut the running yarn σ11), and winding is stopped (while the yarn splicing An action is taken.

That is, the suction mouth (lO) is operated to move the thread (YP) on the package side, and the relay pipe (11) is installed to move the thread ffB) on the bobbin side to a position where it is pulled out from the normal thread travel path C11). The yarn splicing unit W (1
After splicing in step 2), rewinding of the yarn continues.

In addition, the above suction mouse (10), relay pipe,
11) is connected to the pipe (3) on which the suction airflow acts. In addition, since the yarn splicing device uses fluid such as compressed air, the pipe (13) and yarn splicing unit (15) are routed separately.
A conduit (1→ is connected between them.

A schematic configuration of the yarn splicing device (12) is shown in FIGS. 5 and 6.

During normal rewinding, the thread σ11) is passed from the bobbin to the detection device (8), a fixed guide (16) on the negative side of the detection device (8), and a rotating guide ( 17) After passing through (18), the yarn splicing device (12)
) to the package [F].

The yarn splicing device (12) basically consists of a yarn splicing member (101).
Yarn presser (102L untwisting nozzle (103) (104)
), thread shifting lever (105), thread cutting device (106)
(107), and the thread clamp family f) fi? (108
) (109), the suction arm (10) and the suction port at the tip of the relay pipe (11) pivot above the yarn splicing device (12) so as to intersect with each other, and the yarn end σD on the package side The yarn end σ on the bobbin side is sucked, moved to 1All of the yarn splicing device (12), and stopped.

In addition, the above suction mouth (10) and relay pipe (11)
) operations are not performed at the same time, but with a slight time lag.

That is, first, the yarn clamping device (109) on the package C side moves almost at the same time as the yarn end V D on the package side pivots to the outside of the yarn splicing device (t2) by the suction mouth (1ω) and stops. The pivot lever (20) is pivoted by a control cam (not shown) in the counterclockwise direction as shown in the seventh figure to a position (20-1) shown by the chain line, and comes into contact with a support block (21) fixed at a fixed position and stops.

This time series (YP) is the hook part (2) of the swing lever (20).
0a) and is moved between the support block c21) and the turning lever (20).

On the other hand, while the swing lever C20) is operating, the fixed guide (16) and the swing guide (17) (18)
The thread located above (Y is the guide (1-6) (17)
(18) Slope (16a) (17a) (18a)
into the guide groove (19) along the guide groove (19).
The thread σ is detected by the detection device (8) installed at the same position as 9).
After checking the presence of thread αD and confirming whether two or more threads are being suctioned by the suction 7-mouse, etc., the rotating guide (17) (18
) is controlled by a control cam (not shown) to rotate the support shaft C as shown in the eighth figure.
22) in the counterclockwise direction, and the thread guide P) is removed from the detection device (8) and turns into the rotating guide (17) (18).
into the relief grooves (17b) (18b).

Furthermore, almost at the same time as the above-mentioned swiveling guides (17) and (18) turn, the thread end σ on the side of the bobbin changes to 0 in the relay pipe.
1), turns in the opposite direction to the suction mouth (1ω), moves to the outside of the yarn splicing device (12), and stops.

■Almost at the same time as the relay pipe (11) stops turning, the support plate (23a) of the thread clamp device α08) is moved along the guide plate (24) in the same direction as the turning lever c20) by a control cam (not shown). The thread (
2) with support play) (23a) and support block (23
b) Hold in between.

This time scale is as shown in Figure 8.
8) near the guide tip (17(1) (18
Q, and the detection device (8) performs a check after the yarn splicing is completed.

Almost in the center of the yarn splicing device (12) is a yarn splicing member (101).
) are installed, and on both sides of the yarn splicing member (101), as shown in Figure 5, yarn end control plates (25) (2
6), yarn presser (102), untwisting nozzle (103) (
104L guide plate (27a) (27b) and guide rond (28a) (28b), as well as thread cutting device (106) (107)' fork guide (29)
(30) are arranged in sequence.

Also, on the side of the yarn splicing member (101) is a support shaft (31) and a lever (32) (3) that pivots around the support shaft (31).
A thread shifting lever (105) consisting of 3) is installed.

The thread shifting lever (10ω means that the detection device (8) is thread σ11)
Detect slabs, thin threads, etc., cut them with a cutting device (not shown), and remove the suction arm 0■, middle! After the pipe 01) operates and guides each other's yarn ends σPi (b) to the outside of the yarn splicing device (12), the yarn (Il''P) (2) is transferred to the yarn splicing device (
12) Guidance in a direction.

The rotating cylinder of the thread shifting lever 005) is surrounded by the fork guide (29) and the thread clamp device flit (1).
08) This is the range that comes into contact with the stopper c34) installed in between.

The stopper (34) is movable to two positions, and the position where the stopper (34) stops the thread shifting lever (105) is the fixed position, which acts when the thread cutting device cuts the thread, and when the thread pulling lever (105) is stopped by the stopper (34). A stopper (35) for adjusting the overlapping length is provided as shown in FIG.

That is, in FIG. 9, the first stopper (34) is a lever (37) that can pivot to two positions around a fixed shaft (3ω).
The control cam is constructed by fixing a block (38) at the tip (
It is fixed in position via the rod (4) connected to 39) at the working position shown in FIG. 9 and the non-working position rotated in the direction of arrow (41).

That is, when the thread is not cut by the thread cutting device (106) (107), the lever (32) of the thread shifting lever (105) is in the first position.
It is located in contact with the stoppers (3, 4) and makes the length from the clamp point of the yarn end to the tip of the yarn end constant.

In addition, the second swivel (39) is fixed on an adjustment lever (43) that can pivot freely around a fixed shaft (42),
There is a pin (4) on the lower surface of the lever (43) as in the 101st factor.
A positioning hole (45a
) to (45n), the pin (44) engages with the desired hole, and the position of the second stopper (35) is selectively determined.

When the cam (46) rotates in the direction of the arrow (47), the cam surface (48a) 1 causes the rod (49) to be pulled in the direction of the arrow (5ω), and the lever c12 moves to the width 1 stopper (34a).
) position, this chronological cutting is performed, and then the lever (32) returns once in the opposite direction, at which time the cut yarn end is sucked into an untwisting nozzle which will be described later.

Subsequently, the lever (32) is pivoted again by the cam surface (48b) to the second stopper (35) position.

At this time, the first stopper (34) is moved by the cam (39) to a non-operating position, that is, to the rear of the second stopper (35). ``That is, the lever (32) is moved to the second stopper (
35), the amount of the yarn end pulled out from the untwisting nozzle, that is, the amount of overlapping of both yarns in the yarn splicing member is determined.

The larger the amount of rotation of the thread guide lever, the more the thread end will be pulled out.

The amount of overlap increases, and the overlapping length becomes shorter.

A yarn splicing member (10z) is shown in FIGS. 11-13.

The yarn splicing member (101) is screwed (53) to the bracket (52) via a front play (51), and a cylindrical yarn splicing hole (
54) is formed, and a slit (55) suitable for inserting the yarn (b) α uniformly into the outside 1a is formed in the yarn joining hole (54).
) is formed along the entire tangential direction of the yarn joining hole (
a fluid ejection nozzle hole (56) that opens tangentially to 54);
(57) is drilled.

Note that the yarn splicing member (101) shown in FIG. 13 has a yarn splicing hole (
A yarn splicing nozzle unit (58) formed with 5◇ is removably inserted, and one embodiment of this yarn splicing nozzle is the 14th to
This is shown in Figure 16. That is, the yarn splicing nozzle unit (58)
has a substantially cylindrical shape, and has a cylindrical yarn joining hole (54) and an opening tangentially to the yarn joining hole (54), and an opening at a position opposite to the swirling direction of the fluid flow ejected from the opening. Two ejection nozzle holes (56) and (57) are formed.

Furthermore, the nozzle holes (56) and (57) are cylindrical nozzles (5
8), and when the nozzle (58) is inserted into the yarn splicing member (101), the passage (59) opens into the fluid passage (59) formed in the circumferential recess of the A closed passage is formed by the peripheral wall surface of the nozzle insertion hole formed in the joint member and the upper and lower flange parts (60) ω■ of the nozzle, and the passage (
59) is connected to a fluid supply path (61) formed in the yarn splicing member (101) 2).

The fluid ejecting nozzle holes (56) and (57) at the above two positions each correspond to the swirling flow imparting point (CI) (C2) in Figure 1,
The swirling direction of the swirling flow due to the nozzle hole (56) is the 1) direction, and the direction due to the nozzle hole (57) is the (X2) direction, which corresponds to FIG.

Furthermore, the yarn splicing nozzle-1 knit (6
2) shows another embodiment, in which nozzle holes (63) (64)
The nozzle hole (63) is inclined in the direction toward the opening end surface (65), and the nozzle hole (6◇ is inclined toward the opening end surface (66)). The nozzle hole (63) is inclined in the direction toward which the inclination angle (θ) is equal.
(Air flows ejected from 6◇ are formed at intervals so that they do not interfere with each other.

Furthermore, the distance ω1) between the wall surface position (67) (68) with which the air flow ejected from the nozzle hole (63) [F] first collides with the opening end face (65) (66) is at least zero or more. In addition, it is necessary to have a length that maintains a swirling amount of 1 for the fluid to form a yarn splice so that the swirling flow in the splicing hole is sufficient, and the distance w & (gl) is too short. This is because the air flow injected from the nozzle holes (63) (64) immediately escapes from the inside of the splicing hole, making splicing impossible.

By inclining the nozzle holes (63) and (64) in the direction toward the opening end surface in this way, there is a greater possibility that the swirling flow of the fluid will be applied to the yarn end located outside the yarn splicing hole. Wrapping can apply force to the tip of the yarn end of the joined yarn ends, and the seam is formed uniformly over the entire overlap length, creating a so-called corner (where the yarn end protrudes from the seam surface). The formation of two sections can be stopped once, contributing to an increase in yarn strength.

20 to 22 show still another embodiment of the yarn splicing nozzle, in which the nozzle hole (70
) (71)・ by widening the interval ψ of the nozzle hole (
70) (71) are formed with an interval ψ2) between the inner circumferential surfaces of the mutually approaching sides, and the nozzle holes' (70) (71)
This eliminates the interference of fluid ejected from the pipe.

Therefore, the fluid ejected from the nozzle holes (70) (71) effectively becomes a swirling flow for yarn splicing, which can contribute to promoting the yarn splicing and forming a strong seam.

Further, FIGS. 23 to 25 show other embodiments of the yarn splicing nozzle, in which one nozzle hole (7) of the yarn splicing nozzle unit (72) is shown.
3) is formed perpendicular to the axis of the yarn splicing hole G■, and the other nozzle holes (7) are formed at an angle to the axis so as to generate a swirling fluid flow in the direction toward the opening end surface. The diameter of the nozzle hole (73) is smaller than that of the nozzle hole c74).

In this case, the yarn splicing action is mainly performed by the fluid from the nozzle hole (74), but since the yarn end on the upper open end side becomes less entangled, more fluid is injected from the nozzle hole (73) to It promotes entanglement and winding of yarn ends, has uniform twist throughout the seam, and eliminates particularly weak areas.

In addition, the above yarn splicing nozzle unit (58) (62) (
69) In (72), the two-position nozzle holes are provided in such a way that the openings of the nozzles face each other in plan view at the tangential position on the thread insertion slit side. This is one nozzle hole (57) (64)
(71) The fluid stream injected from (74) is slit (
55), but the fluid flow ejected from the other nozzle hole (56) (63) (70) (73) is in the same direction as the swirling direction and the direction of the slit, so it flows out from the slit. There is a high possibility that the nozzle hole (
56) (63) (70) The jet flow from (73) first moves straight across the slit position, and the fluid that has swirled along the inner surface of the yarn splicing hole is blocked by the straight flow, resulting in a flow from the slit. The aim was to minimize leakage.

Also, a pair of nozzle holes (56) (57), (63)
It is also possible to provide (64), (70) (7υ, (73) and (74) on the same side with respect to the plane passing through the center of the yarn splicing hole.

That is, as shown in the splicing nozzle unit (75) of FIGS. 26 to 28, the nozzle holes (76) and (77) are provided on the same side.

In this case, the supply pipe (78) for supplying compressed fluid to the nozzle holes (76) (77) can be easily provided.

In other words, if the nozzle holes are provided in opposite directions, the supply path (
61) as shown in FIG. 13, for example, there will be a time lag in the fluid jets from the nozzle holes (56) and (57).

In addition, the supply path (61) and nozzle (58) shown in FIG.
It is desirable that the cross-sectional areas of the surrounding fluid passages (59) perpendicular to the passage be the same.

In FIGS. 11 to 13, control plates (25) (26) are further screwed onto both sides of the yarn splicing member (101) via spacers (79) [F]O), and the control plates (25) Specific side edge G of (26)? 5a)
(26a) is positioned to cross a part of the opening of the yarn splicing hole (51g).

The above control plate CωC1l! The upper control plate (26) of 6) is for controlling the thread (b) connected to the package, and the lower control plate (25) is for controlling the thread αB) connected to the bobbin.

Therefore, the control plate (26) is provided on the side facing the nozzle hole (56), and the control plate (25) is provided on the side facing the nozzle hole (57).

The control plates (25) and (26), together with the thread presser lever (102) described later, position the two threads inserted into the thread splicing hole (54) at a position where the threads are in contact with each other, and when the fluid is ejected. , to ensure the initial entanglement of both yarn ends, to prevent untwisting when both yarns are turned in a divided state, and to control the flow rate flowing out from both end openings of the yarn joining hole (54). It functions to prevent the ends from popping out, and furthermore, controls the flow of fluid so that the clamped original yarn is prevented from turning and the yarn ends are sufficiently entwined with the opposing yarn.

That is, when the ejected fluid acts on the yarn end cIP) (!l'B), a balloon is generated, and when the number of rotations of the balloon increases, each fiber near the balloon neck is pulled out due to the yarn swinging action of the balloon. This causes thread breakage to occur more easily.

Therefore, the balloon rotational speed is controlled to be suitable for yarn splicing by the above control play) (2, 5) (26).

Furthermore, the thread splicing member (101) shown in Fig. 6.8.11 is
) Yarn holding devices (i o 2) arranged on both sides of the yarn end untwisting nozzle (103) (104)
The untwisted yarn end σ force α is pulled out from the untwisting nozzle and set in the yarn splicing hole (5◇) of the yarn splicing member (101), and the positions of each yarn (YP) (YB) are The position of the control plate (25) is regulated in relation to (2ω).

It also has the function of bending the yarn between the loop point and the yarn splicing hole and preventing the propagation of untwisting.

As shown in FIG. 6, the thread presser device (102) has thread presser plates (83a) (83b) fixed to the thread presser plate (83a) (83b) which can be rotated around a spindle (81) fixed in a fixed position. As the mouth throat (84) is operated by a control cam (not shown), the thread presser plate (83a) (
83b) is configured to pivot.

Further, as shown in FIG. 29, the thread holding plates (83a) (83b) are formed into a fork shape toward the tip, and the holding plates (83a) (83b) have the same shape. ) (83b) side edge for thread presser (
85a) (85b) fixes the thread splicing member during operation.
(51) Located above the top surface, the thread is not held between the thread presser plate (83a) (83b) and the front plate (51).

The yarn end untwisting nozzles (103) (10◇ have the same structure, so one untwisting nozzle (103) will be used) are explained in FIG. .

That is, the package-side yarn end (YPI
) is introduced through the yarn joining hole 610.

The yarn end σp1) is introduced into the nozzle hole (86) through the flexible pipe (87) by the suction action of the suction pipe (3).

When the yarn end αPI) is introduced into the nozzle hole (86), the fluid injection hole (8) opens obliquely into the nozzle hole (86).
The fluid jet from 8) untwists the yarn end αp1) and acts to bring each fiber into a substantially parallel state 7.

・The injection nozzle (88) has a nozzle hole (86
) It is desirable to drill the hole tangentially to the inner peripheral surface of the hole.

The fluid is supplied to the injection hole (88) through the conduit 04 described above.
) from the pipe (89) connected through the communicating hole (90
).

The length of the yarn end to be untwisted differs depending on the opening position of the fluid injection hole (88) into the nozzle, that is, the distance from the upper end opening surface of the nozzle.

Therefore, the opening position of the injection hole can be adjusted according to various conditions so that the type of yarn with short average fiber length, long yarn, or the untwisted state of the overlapping part in the yarn splicing hole of the yarn splicing member is most appropriate. It is desirable that the sleeve (91) be inserted so that it can advance and retreat.

Next, the guide fixed on the front plate (51) will be explained with reference to FIG. 11 and FIGS. 31 and 32.

The guide plates (27a) (27b) have thread joining holes (51
The yarn end untwisting nozzle (1) is fixed perpendicularly to the front play (51) located on the center wheel of
03) The suction force of (104) is
It is arranged so as not to affect the 'l'lσ average.

Furthermore, the above guide play) (27a) (27b)
Guide rods (28a) (28b) are fixed to the side surfaces of the front plate (51) at intervals from the top surface of the front plate (51). Plate (51)
It extends parallel to the upper surface of the front plate (51), is bent into an L shape, and is fixed to the front plate (51).

Therefore, the yarn joining hole (5
4) The thread cfP) σ to be inserted takes a path away from the front plate (51) while being in contact with the guide rods (28a) (28b) as shown in FIG.

That is, as mentioned above, during the yarn splicing operation, the yarn is bent between the yarn splicing holes (5-span clamping devices (108) and (109)) by cooperation with the yarn presser lever (102), and the yarn inside the yarn splicing holes is bent. It is configured to prevent propagation of yarn untwisting due to swirling flow.

Further, in Fig. 5.6.8, the thread cutting device (106
) (107) is provided inside the guide plate (29) and (3■), and consists of a fixed blade (92) and a movable blade (93). When actuated by a cam, a fork-like two-pronged lever (95
) rotates clockwise and counterclockwise around the shaft (96), and the fork portion (97) of the lever (95) rotates around the movable blade (
93) By moving the support pin (98) at the other end, the movable blade (93) is created using the axis Φ9) as a fulcrum. (3) has a guide groove (3) as shown in Figure 11. 29a) (29b), (30a) (30b) are formed.

Furthermore, the thread shifting lever (105) installed on the side of the thread splicing member (101) is operated by a control cam (not shown) at the sixth position.
As shown in Fig. 8, the thread (Yi') 1YH) is rotated clockwise around the axis c31) via the rod (31a) to guide the guide grooves (29a) (29b), (30a) (30b).
) and introduce the yarn (Yi'l) from the inclined surface of the yarn splicing member into the yarn splicing hole (54) through the slit.

Next, the yarn splicing operation by the yarn splicing device will be explained.

(a) Thread preparation and clamping process In Fig. 1, when the detection device (8) detects that the thread is cut during rewinding or that the bobbin is free of thread waste, the drum (9) stops rotating, while the drum (9) stops rotating as shown in the figure. A one-turn clutch functions, and the yarn splicing operation is performed by various control cams installed on a shaft that rotates via the clutch, or various control cams that are interlocked with the shaft.

First, suction mouth (10), medium i pipe (11)
The yarn ends are rotated at the chain line positions (10a) and (lla) in Figure 1 while being sucked, so that the yarn αD on the package (P) side and the yarn (YBI) on the bobbin (G) side intersect. It passes above the yarn splicing device (12) and stops at a position outside the yarn splicing device.

That is, after the suction mouth (10) is activated and before the relay pipe (11) starts to operate, the yarn clamp device (1,09) on the package side is activated and the yarn ( Yi') Turn lever ell! A fixed guide (16) and a rotating guide (17) are sandwiched between the support block (21) and the detection device (8).
) The thread σ is introduced into the guide groove (19) in (18), and the detection device (8) is checked.

Next, the swivel guides (17) and (18) are attached to the support shaft c22.
) around the chain line position (17-1) (18-1), remove the thread ■ from the detection device (8), and remove it from the escape groove (17
b) Insert into (18b).

Further, the relay pipe suctions the yarn CF on the bobbin (cut side), rotates to a position outside the yarn splicing device (12), and stops.

At this time, the thread (Y uniform is the above-mentioned rotating guide (17) (18
) is clamped between the support plate (23a) and support block (23b) of the thread clamp device (10) as shown in FIG. 11.

(v)) Thread gathering and cutting process When the above thread clamping process is completed, as shown in Fig. 5, the rod I 1
The lever (32) of the thread shifting lever (105) shown in the figure (
33) rotates around the support shaft (31), and both sides ρ thread σ
P) α uniformity is each guide groove (29a)' (29b), (30a) (30) of fork guide (29) (30)
b) The two are guided separately and inserted into the splicing hole (54) of the splicing member (101) through the slit (55).

Next, thread cutting σP2) (XB2) is performed by the thread cutting devices (106) (107) at a predetermined distance from the clamping devices (108) (109) as shown in FIG.

The position at which the yarn is cut is related to the length of the spliced seam and affects the appearance, texture and seam strength of the spliced seam, and the cutting position varies depending on the yarn count.

That is, in FIG. 33, the yarn deflection) [phase] on both sides of the yarn splicing member 001) is clamped by the yarn clamp devices (108) (109), and the yarn shifting lever (105) is operated,
The illustrated rod (31a) is moved in the direction of the arrow (31b) by a control cam (not illustrated), and the levers (32) and (33) are moved.
While rotating clockwise around the spindle (31),
Thread cutting is performed.

Benio, thread pulling lever (105) and cutting device 006)
(107), when the thread presser (102) is activated, the thread presser (102)
It is waiting at the position indicated by the chain double-dashed line (IQ2a).

Le (103) (10 thread end VPI) (YH
At the same time or before or after I) is suctioned, the yarn shifting lever (105) moves in the direction opposite to the yarn twisting If, and the yarn end (YPI) CI'81) is suctioned deep inside the untwisting nozzle. Then, as described above, the twist is untwisted by the fluid jet to a state suitable for splicing.

Note that it is desirable that the suction timing of the untwisting nozzles (104) (104) starts immediately before the yarn is cut by the cutting devices (106) (107).

That is, when the thread (to) is cut, tension is applied to the thread by the suction action of the suction mouth relay pipe, so that the thread is cut free (Konatsu? = thread end).
YP 1) CIB 1) is scattered and the untwisting nozzle # (1
03) (104) and the yarn end suction may not be performed due to the untwisting waste No. 11 being moved away from the opening position.

The fluid is supplied to the untwisting nozzle by switching the nozzle using a solenoid (not shown).

2) Yarn splicing process When the yarn ends are untwisted by the yarn end untwisting nozzles (103) (104) to a state suitable for yarn splicing, the untwisting nozzle (104) QO3) Flexible pipe ( 87) and the fluid injection hole (88) tv are stopped, the thread handling lever (10
5) operates to guide the d-yam ends (YPI) and (YBL) together while pulling them out from the untwisting nozzles (103) and (104) and overlapping the untwisted ends at a predetermined position on the yarn splicing member.

At this time, one lever (32) of the thread shifting lever (105)
rotates to a position where it abuts the stopper (39), and
The thread presser device (102) operates, and as shown in FIGS.
Rotate to the state shown in Figure 2 and remove the thread presser plates (83a) (83b).
) and guide rod c28a) C8b) Niyotte Y joint hole (
5◇ and the clamp device (108) (109) Strictly speaking, bend the yarn (YW (YB)) between the yarn joining hole j (54) and the yarn shifting levers (32) (33).

The thread shifting lever (105) and the thread pressing device (102)
), the yarn end (￥p1) (2) D inserted into the nozzle hole of the untwisting nozzle (103) (10◇) is pulled into the yarn splicing hole (5mm) of the yarn splicing member (101). , 12th.
The control plates (25) (26) and the thread presser (102) shown in FIG. 13 are positioned and set in a state where the thread end surfaces 1) (YBI) are in contact with each other.

Next, after the yarn ends are set, yarn splicing is performed according to the principle shown in FIG. 1 using the swirling flow of compressed fluid injected from the fluid injection hole (56) (!5'i) in FIG. 13. .

That is, the yarn end surface) is clamped at the clamp point (Kl) position, the yarn end tip @1) is in a free state, and swirling flows in opposite directions act on the yarn ends (YBI).

In the case shown in the first diagram, the unique twist of the yarn (G) is Z twist, so the swirling flow needs to be in the direction of arrow Gl (1) (X2), but the unique twist of the yarn to be spliced is When the twist is S twist, the direction of the swirling flow is of course opposite.

The seam obtained in this way is as shown in Figure 2, where the seam metal body contains the actual twist 2) in the same direction as the twist inherent to the yarn, and the seam portion where the fibers of each other are mixed and heated into a single thread. It has.

An implementation example will be shown below regarding the comparison of the strength, elongation, number of twists, etc. of the seam obtained in this way with the parent yarn, that is, a single yarn.

Cotton Ne 40 combed yarn was used, the nozzles shown in FIGS. 13 and 14 to 16 were used as yarn splicing members, and the air pressure from the air injection nozzle was 5.5 My/#.

(a) Yarn strength elongation (c) Number of twists In an experiment conducted under the above conditions (using cotton Ne7 combed yarn), the yarn strength retention rate was 73.7, and the elongation retention rate was 81. According to the L distribution method, a wide range of yarns from fine yarns to thick yarns are possible.

In the above experimental results, the obtained t-joint (with respect to the weft yarn, the strength, elongation, number of twists, and twist direction of 5s showed a high retention rate, and the yarn characteristic number of the single yarn was close to b) was shown. There is.

As described above, the present invention can be carried out in the lf1 thread joining joint [the thread ends of the two threads inserted in a overlapping manner so that the thread ends face in opposite directions are in the 71 no state, and at least the thread joining Since swirling fluid flows in opposite directions are applied at two different positions of the overlapping part in the hole, the seam formed has a real twist in the same direction as the original twist of the original yarn. The yarn structure is very similar to that of the original yarn, and it is possible to obtain a seam that is the same as a single yarn in terms of yarn strength, elongation, number of twists, etc.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the principle of the method of the present invention, Fig. 2 is a schematic diagram of a wine goo having a wire device, Figs. Configuration front view,
FIG. 6 is a plan view of the same. FIG. 7 is a plan view showing the operation of the clamp device. FIG. FIG. 10 is an explanatory diagram of the adjustment action of the position conversion stopper, and FIG. 11 is a perspective view showing the stopper of the
Fig. 12 is a front view showing the positional relationship between the yarn splicing member and the control plate, Fig. 13 is a sectional plan view showing an example of the yarn splicing member, and Figs. 14 to 16 are 14 is a plan view, FIG. 15 is a side view, FIG. 16 is a sectional front view, and 17 to 19 are views showing an example of a joint nozzle unit.
The figure shows another example of the nozzle unit, FIGS. 20-22 show still another example of the nozzle unit, and FIGS.
FIG. 25 is a diagram showing still another example of the nozzle unit, FIGS. 26 to 28 are diagrams showing an example in which the position of the nozzle hole of the nozzle unit is changed, and FIG. 29 is a plan view showing the operation of the thread presser device. Fig. 30 is a cross-sectional plan view showing an example of an untwisting nozzle, Fig. 31 is a perspective view showing the relationship between the guide plate and the guide rod, Fig. 32 is a side view showing the bending state of the yarn by the same device, and Fig. 33 - FIG. 35 are explanatory views showing the yarn splicing operation by the yarn splicing device. (541... Thread joining hole cover... Package side thread end α... To bobbin side thread end 1)... Turning direction (c) 1) (Bl)... Tip part of thread end Figure 16 Figure 17 Figure 19 Figure 150 Figure 18 Figure 20 Figure 22 Figure 25 Figure 21 Figure 24 Garden 7 Geese 28 Figure 5'/ Day 30 Figure 34 Figure 35 Procedure amendment ( Spontaneous) (To the Patent Office Examiner) 1 Display of the case 1982 Patent Application No. 2/3/+77 2, Name of origin 3, Relationship with the case of the person making the amendment Patent applicant's office 〒6
01 3-4 Kisshoin Minami Ochiai-cho, Minami-ku, Kyoto City, Date of notification of reasons for refusal

Claims (1)

[Claims] A spun yarn splicing method characterized in that the two yarn ends are turned in opposite directions at least at two different positions in the overlapping part in the yarn splicing hole.