JPS63267676A - Preventive method for abnormal thread connection in automatic winder - Google Patents

Abstract

PURPOSE:To prevent a double thread from being rolled in when rewinding is resumed after two threads which are to be connected together have been connected, by fixing a part of a thread guide 1 which has branched off from a seam, apart from a regular thread guide which continues inclusive of the seam. CONSTITUTION:When it is detected 8 that a thread Y1 being rewound from a bobbin B to a package P has been cut or the bobbin B has been emptied, a drum 9 stops. A relay pipe 10 and a suction mouth 11 suck a thread end from chain line positions 10a, 11a and turn and move, and threads YB, YP on the bobbin B side and package P side intersect and are connected at a thread connecting device 12 and it is led to the outer part of the device 12 and stops. After the suction mouth 11 has operated, within a predetermined time until the relay pipe 10 operates, the thread YP is led to a guide near the detection device 8 and inserted into a groove, and after a seam has been checked by the detection device 8, the thread YB is sucked into the relay pipe 10. Next, rewinding is resumed by a drum 9 and the package P. As a result, the double rolling in of the thread is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for preventing abnormal yarn splicing in an automatic winder.

[Conventional technology]

For yarn splicing in an automatic winder, there are known methods such as a mechanical Fisherman knotter, a liver knotter, and a fluid splicing device that splices yarn using the action of compressed fluid.
In either device, the yarn placed in the yarn path of the winding unit and wound during normal rewinding is pulled out from the yarn supply bobbin, passed over the yarn splicing device while being checked by a detection device, and then rotated. It is wound into a package by a driven traverse drum. At this time, when a yarn breakage or a yarn defect such as a slub is detected by the detection device disposed in the yarn path, a yarn splicing command is immediately issued in the case of yarn breakage, and the yarn is spliced by the yarn splicing device. In the case of slab detection, after the yarn is once cut by the cutter, a yarn splicing command is issued and the yarn splicing is performed by the yarn splicing device.

An example of a yarn splicing device in which each winding unit is provided with the yarn splicing device is shown in FIG. That is, the yarn (Yl) pulled out from the yarn supply bobbin (B) passes through a detection device (8) that detects yarn defects such as slabs, and then is wound onto a package (P) that is rotated by a traversing drum (9). , yarn splicing device (
12) is arranged between the detection device (8) and the winding package (P).

[Problem that the invention seeks to solve]

In such a device, as shown in Fig. 12, the thread splicing gap is the thread (YP) pulled out from the package (P) side.
is guided to the thread splicing member (101) while being suctioned and held by the suction mouth (11), and the thread (YB) on the bobbin (B) side is held by the relay pipe (10) and guided to the thread splicing member (101). Ru. Next, the yarn splicing member (L
Cutters (106) (107) on both upper and lower sides of (ot)
) to the suction mouth (11) (YP
2), the thread (YB2) connected to the splicing vibrator (10) is cut, and the thread splicing hole (37) of the splicing device member (101) is cut.
), the tips of the yarn ends are overlapped and spliced by the action of compressed fluid.

However, if the upper cutter (107) operates normally but the lower cutter (106) that cuts the yarn on the package (P) side fails for some reason and the yarn is not cut, the following occurs. A problem arises. That is, the thread on the package side (YP2) is
A splicing is performed with the thread (YB) on the bobbin side while continuing in 1). In the case of fluid splicing, the yarn will be spliced even under the above conditions if the splicing operation is performed, so the splicing is performed in the state shown in Figure 13, and when the package rotates as winding resumes,
The thread (YP2) connected to the suction mouth (11) is drawn out from the suction mouth (11) and wound up in the package. Furthermore, even if a yarn defect detection device such as a slab catcher is placed between the yarn splicing device (101) and the package (P) in order to prevent such double yarn entanglement, double yarn Only when both threads pass through the inspection device can a double thread, that is, an abnormal splicing, be confirmed. In this case, the thread that was connected to the satanyong mouth becomes one free end, and the detection groove of the detection device There is a high possibility that the thread will pass outside of the thread, resulting in a double thread detection error.

Furthermore, if the upper cutter (107) in FIG. 12 does not function properly, the double thread will be wound up in the same way.

The present invention aims to solve the above problems.

c Means for Solving the Problem] The present invention provides two yarns to be spliced into a yarn splicing device and after the splicing operation is performed, when winding is restarted, the yarns are continuous including the seam. A part of the yarn path or virtual yarn path that branches off from the seam and exists apart from the regular yarn path is clamped and fixed.

[Effect]

For example, in the case of Fig. 13, a part of the existing thread path (YP2) branched from the seam (J) is clamped and fixed, that is, the thread between the thread splicing member (101) and the suction mouth (11) is fixed. By clamping the package, the thread (Yl) tries to run as the package rotates, but since the thread path (YP2) is clamped, the thread between the clamp point and the package is torn and cut. As a result, it appears that a yarn splicing error has occurred, and the yarn splicing operation is performed again.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic diagram of an automatic winder to which the present invention is applied, in which a shaft or pipe (2) and a suction pipe (3) are installed between each side frame (1), and a winding unit ( 4) is rotatably supported on the shaft (2), and during operation of the automatic winder, the unit (4) is also placed on the pipe (3) and fixed as appropriate. Incidentally, 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 (P), the thread (Yl) is rewinded from the bobbin (B) on the peg (5) to the guide (6).
After passing through a tensor (7) to apply appropriate tension to the yarn, the package (8) is rotated by a traversing drum (9), which passes through a detection device (8) that also detects and cuts yarn unevenness such as slabs and detects yarn running. P) It is rolled up.

At this time, when the detection device (8) detects yarn unevenness in the yarn, a cutter installed near the detection device (8) is activated to cut the running system (Yl), and winding is stopped. , the relay pipe (10) operates and the thread (YB) on the bobbin (B) side
), the suction mouse (11) guides the yarn (YP) on the package (P) side to the yarn splicing device (12) installed at a position away from the normal yarn running path (Yl), and the yarn splicing device t
After splicing in step (12), rewinding of the yarn continues. Note that the relay pipe (10) and suction mouth (11) are connected to a pipe (3) that produces suction airflow. In addition, since fluid such as compressed air is used in the yarn splicing device, a conduit (14) is connected between the pipe (13) and the yarn splicing box (15) in a separate route, and the pipe (13)
compressed fluid is supplied.

Detailed views of the entire yarn splicing device (12) described above are shown in FIGS. 2 and 3. That is, during normal rewinding, the thread (Y) is moved from the bobbin (B) to the detection device (8) and the fixed guide (1) installed at one end of the detection device (8).
6) and the yarn splicing device (12) via the rotating guides (17) and (18) inserted on both sides of the detection device (8).
The route is taken to pass above the package (P).

The yarn splicing device (12) basically includes a yarn splicing member (101).
Yarn presser (102), untwisting nozzle (103)
(104), thread shifting lever (105), thread cutting device (106) (107), and thread supporting device (108) (
109), the above-mentioned relay pipe (10),
The suction ports at the tip of the suction mouth (11) pivot above the thread splicing device (12) so as to intersect with each other, and the thread ends (YB) on the bobbin (B) side and the package (P) side
P) and moves to the outside of the yarn splicing device (12) and stops.

In addition, the above relay pipe (10) and suction mouth (11)
) operations are not performed at the same time, but with a slight time lag. That is, first, the yarn end (YP) on the package (P) side is rotated by the suction mouth (11) to the outside of the yarn splicing device (12) and stopped, and almost at the same time, the yarn support device on the package (P) side (109)
The pivot lever (20) is moved counterclockwise to the chain line position (20-1) by a control cam (not shown) as shown in the fourth diagram.
It rotates until it comes into contact with the support block (21) which is fixed at a fixed position and stops.

This time series (Y) is the hook part (20) of the swing lever (20).
a) Moves while being hung on the support block (21)
and a turning lever (20).

Meanwhile, while the swing lever (20) is operating, the fixed guide (16) and the swing guide (17) (18)
The thread (Y) located above is the guide (16) and (17)
(1B) Inclined surfaces (16a) and (17a) (
a detection device (8) that fits into the guide groove (19) along the guide fi (19) and is installed at the same position as the guide fi (19);
Check the presence or absence of the thread (Y) using the suction mouse (
11) to check whether two or more yarn ends (yp) have been suctioned by mistake, and after checking the yarn (Y), the rotating guides (17) and (18) are connected to a control cam, etc. (not shown). The yarn end (YP) is rotated counterclockwise around the spindle (22) as shown in Fig. 5, and the yarn end (YP) is detected by the detection device W (8).
Remove the relief grooves (1) of the swivel guides (17) and (18).
7b) Insert into (18b).

Furthermore, almost at the same time as the rotating guides (17) and (18) rotate, the thread end (YB) on the bobbin (B) side is sucked by the relay pipe (10), and the suction mouth (
11), moves to the outside of the yarn splicing device (12), and stops.

Almost at the same time as the relay pipe (10) stops turning, the support plate (23a) of the thread support device (108) is moved along the guide plate (24) in the same direction as the turning lever (20) by a control cam (not shown) or the like. It moves with the thread (Y) suspended, and comes into contact with the support block (23b) fixed at a fixed position, and the thread (Y) is held between the support block (23a) and the support block (23b). As shown in Figure 5, this time series (YB) is caused by the rotation of the swiveling guides (17) (18) and the hook portion (17c) (1) near the tip of the guide.
8c), and the detection device (8) performs a check after the yarn splicing is completed.

A yarn splicing member (101) is located approximately in the center of the yarn splicing device (12).
) are installed, and on both sides of the yarn splicing member (101) there are yarn guide bins (25) (26) and a yarn layering device (
102), untwisting nozzles (103) (104), yarn guides (27) (28), and yarn cutting device (106)
(107), fork guides (29) and (30) are arranged in sequence, and on the side of the yarn splicing member (101) there is a support shaft (31) and a lever (32) that pivots around the support shaft (31). ) (33) Thread shifting lever (105) consisting of
is installed. The detection device (8) detects a slab of yarn (Y) and cuts it with a cutting device (not shown), and the relay pipe (10) and suction mouth (11) operate to separate the yarn (Y) from each other. Thread end (YP) (Y
B) After guiding the yarn end (YP) (YB) to the outside of the yarn splicing device (12), guide the yarn end (YP) (YB) to the outside of the yarn splicing device (12), and then guide the yarn end (YP) (YB) to the outside of the yarn splicing device (12). ) to guide you in the direction. In addition, the thread shifting lever (10
5) The turning range stops when it comes into contact with a stopper (34) having a substantially V-shaped cross section and installed between the fork guide (29) and the thread support member (108). Therefore, by adjusting the position of the stopper (34), the rotation range of the thread guide lever (108) can also be adjusted.

Furthermore, in FIGS. 2, 3 and 7, a part of the fixed guide (16) is attached to the clamping surface of the package side thread (
16c), and the clamping surface (16c) and the yarn gripping surface (110c) of the clamp lever (110) constitute a clamp fixing device (112) for miscut yarn on the package side.

That is, the clamp lever (110) is connected to the shaft (31).
It is supported so as to be able to rotate freely around the shaft, and is biased clockwise in FIG. 3 by a spring (113) wound around a shaft (31). A pin (114) is fixed to the middle part of the clamp lever (110), and a pivot type guide (1
8) and follows the movement of the guide (18). The above-mentioned clamp mechanism is just one example, and the suction mouse (11) in the East 2 figure
A mechanism that can clamp any position between the thread splicing member (101) and the thread splicing member (101) may be used. Preferably, it is as close to the yarn splicing member (101) as possible. That is, in Fig. 13, when the drum rotates with the thread between the thread joining member (101) and the suction mouth (11) clamped, the thread is forcibly cut, but the cut point is not connected to the package (P). This is because it is necessary to have a regular thread portion between the thread 11 members (101) in order to prevent the double thread from being entangled.

Regarding the operation of the above yarn splicing device, the 11th rl! This will be explained with reference to the timing chart of J and FIGS. 1 to 6.

In FIG. 1, when the detection device (8) that detects thread breakage during rewinding or the disappearance of the thread layer on the bobbin detects that the thread is not running, the drum (9) stops; A one-turn clutch functions, and the yarn splicing operation is performed by various control cams installed on a shaft rotated via the clutch or various control cams interlocked with the shaft.

First, relay pipe (10), suction mouth (11)
The man 1 rotates and moves from the chain line positions (10a) and (lla) shown in the diagram while sucking the thread end, and each bobbin (
B) side yarn (YB) and package (P) side yarn (YP)
) pass above the yarn splicing device (12) so as to intersect with each other, and are guided to a position outside the yarn splicing device (12) and stopped.

In addition, the above relay pipe (10) and suction mouth (1)
The operations 1) are not carried out at the same time, and as mentioned above, the yarn (YP) on the package (P) side is first moved by the suction mouse (1).
1), rotates to a position outside the yarn splicing device (12) and stops, and after a predetermined time elapses, the bobbin (B)
The side yarn (YB) is sucked into the relay pipe (10), rotates to a position outside the yarn splicing device (12), and stops.

After the suction mouth (11) is activated, the relay pipe (1
As shown in FIGS. 4 and 5, the yarn support device (10) on the package (P) side is
9) The turning lever (20) operates to sandwich the thread (YP) between the turning lever (20) and the support block (21) (Fig. 11 (D)), and the thread (YP) is installed near the detection device (8). Fixed guide (16) and rotating guide (17)
After the thread (yp) is introduced into the guide groove (19) of (18) and checked by the above-mentioned detection device (8), the rotating guide (17) (18) moves along the chain line with the support shaft (22) as the fulcrum. Position<
17-1) Turn to (18-1) and remove the thread (YP) from the detection device (8), and remove the thread (YP) from the escape groove (17b) (18b)
(Fig. 11(C)).

Furthermore, the relay pipe (10) is connected to the thread (YB) on the bobbin (B) side.
), the yarn splicing device (12) is rotated to a position outside the yarn splicing device (12), and then stopped. At this time, the thread (YB) is attached to the hook part (17c) (18
c) and then the yarn support device (108) as shown in the sixth figure.
Yarn support plate (23a) and support block (23
b) It is sandwiched between them (Fig. 11(E)). Therefore, the thread (YB) on the bobbin (B) side is detected by the detection device (
The check in step 8) is not performed, but is performed after the yarn splicing is completed.

When the operations of the relay vibrator (10) and suction mouth (11) are completed, the levers (32) and (33) of the thread handling lever (105) shown in Figs. 2 to 6 move around the spindle (31). (Fig. 11 (F))
, the threads (YB) (YP) on both sides are connected to the fork guide (2
9) (30) are guided separately to the guide grooves (59) and (60) of the yarn splicing member (101).
) is inserted through the slot 7) (38).

Next is the cutting device! (106) (107), the yarn cutting (YB-2) (YP-2) is performed at a predetermined distance position from the yarn support devices (108) (109) as shown in Figure 6 (Figure 11 (G). )).

The position at which the sutures are cut is related to the length of the spliced seam, and affects the appearance, texture and binding strength of the spliced seam. The position where the yarn is cut differs depending on the yarn count.

That is, in FIG. 8, the threads (YB) and (YP) on both sides are held between the thread support positions (10B> and (109), and the thread shifting lever (105) is operated, and the rod (YP) shown in FIG. 61) is moved in the direction of arrow (A) by a control cam (not shown), and the levers (32) (33)
Thread cutting is performed in a state where the thread is rotated clockwise around the support shaft (31). Furthermore, when the thread shifting lever (105) and the cutting devices (106) and (107) are operated, the thread layering device f (102) is connected to the rod (49) as shown in Figure 5.
is rotated clockwise around the support shaft (46) by the operation (in the direction of arrow 70).

Next, as shown in FIG. 9, the untwisting nozzle (103) (10
4) When the yarn end (YBI) (YPI) is suctioned by
105) in the direction away from the thread, that is, as shown in Figure 5, the rod (61) is actuated (in the direction of arrow 71) to rotate counterclockwise around the support shaft (31) and move away from the thread (Y). Leave. At this time, the above thread end (Yet) (YPI)
are drawn into the nozzles (103) and (104) by the suction action, and are untwisted into a state suitable for splicing by the compressed fluid jetted from the injection nozzle (51). (Fig. 11 (H)) That is, after the thread is cut, the thread shifting lever (105) moves in the direction away from the thread (Y) (Fig. 11 (Fl)
)) As a result, both yarn ends (YPI) (YBl) are pulled into the nozzle hole with a sufficient length and untwisted.

The suction timing of the untwisting nozzles (103) and (104) is preferably started immediately before the yarn is cut by the cutting devices (106) and (107). That is, thread (Y)
When the thread is cut, tension is applied to the thread by the suction action of the suction (10) and (11), so the thread ends (YPI) and (YBI) are scattered due to the thread cutting and are sent to the untwisting nozzle (1).
03) Move away from the (104) position and untwist the nozzle (10
3) Yarn end (YBI) (yPl) by (104)
There may be cases where the suction action is not performed. Therefore, basically, the untwisting nozzle (1
03) (104) can be applied, but it is preferably done immediately before the thread cutting as described above.

Further, fluid is supplied to the untwisting nozzles (103) (104) by switching valves by operating a solenoid (not shown).

Further, the untwisting nozzles (103) (104) untwist the yarn ends (YBI) (YPI) to a state suitable for splicing, and the untwisting nozzles (103) (104)
Simultaneously or immediately after the suction action of the thread stopper stops, as shown in Fig.
operates and guides the thread ends (YBI> (YPI)) while one lever (32) turns to the position where it abuts the stopper (34) (FIG. 11 (F2>) and the thread holding device (102) ) operates and the untwisting nozzle (10
3) Yarn end (Y) inserted into the nozzle hole of (104,)
BI) (YPI) is drawn into the yarn splicing hole (37) of the yarn splicing member (101), and set so that the ends of the yarns to be spliced are overlapped. At this time, the thread shifting lever (105) and the thread holding device (102)
The length of the seam to be spliced is determined by the turning distance.

Therefore, the turning distance of the thread shifting lever (105) and the thread pressing device (102>) is adjusted depending on the thread count.

Note that the yarn holding plates (48a) and (48b) press the yarn at positions where the yarn ends are overlapped with each other (YBI) (YPI
) is preferable from the point of view of splicing stability, but there is no need to specifically limit it.

Furthermore, the yarn end (YBI) (YPI) is connected to the yarn joining hole (37
), yarn splicing is performed by the action of compressed fluid jetted from the jet nozzle hole (39) (first
Figure 1 (■)). When the thread splicing pattern is finished, press the thread shifting lever (
105) and the thread holding device (102) hold the thread (Y
), and by the drum start (Fig. 11 (K)), the yarn (Y) is separated from the sleeve of the yarn splicing member (101) (
38) and exits from the thread splicing member l! 7I returns to the normal rewind state described above.

The above is one cycle of the yarn splicing operation. Next, a case will be described in which the yarn end (YP) is not cut by the yarn cutting device (106). The thread cutting device (106) is operated in the state shown in FIG.
When the thread cutting error occurs, the thread between the suction mouth (11) and the package (P) is still different, and after the above-mentioned thread splicing operation is performed, the turning guide (17) (
18) returns to its original position. At this time, the thread (YP) is attached to the clamping surface (16C) of the fixed guide (16) in Fig. 7.
and the clamp surface (11) of the clamp lever (110)
0c), and is located between the rotation guides (17) and (18
) moves clockwise around the axis (22), the lever (110) also follows, and the thread (YP2) is clamped and fixed between the guide (16C) and the lever (110c). (Figure 11 (M)) Next, the drum (
Although the package (P) rotates due to the start of step 9) (Fig. 11 (K)), the thread (YP2) connected to the satanyong mouse (11) is not running and is clamped, so the package (P) ) and the clamp fixing point (FIG. 2 (Q)), the yarn is forcibly cut, resulting in a yarn splicing error, and the yarn splicing operation is repeated again. That is, in FIG. 2, the package (P) and the suction mouse (]1
), calculate the distance between the package (P) and the seam position (J) formed by the splicing member (101), and calculate the distance between the above position W (J) and the suction mouth (11). As mentioned above, it is desirable that L>f, but there are certain mechanical constraints. For example, if L; J=6+1, the probability that the thread will be cut within the distance (L) is 85. It is 7%.

〔Effect of the invention〕

According to the method of the present invention, it is possible to prevent the double yarn spliced from being wound into the package due to the yarn on the package side not being cut.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an example of a winding unit to which the present invention is applied, FIG. 2 is a front view showing an embodiment of a yarn splicing device that implements the method of the present invention, and FIG. 3 is a plan view of the same. , FIGS. 4 and 5 are plan views showing the operating state of the device,
Fig. 6 is a front view showing a state in which the thread end is inserted into the device, Fig. 7 is a plan view of the device that clamps the uncut thread between the package and the suction mouth, and Figs.
Figure 0 is a schematic diagram explaining the yarn splicing operation process, Figure 11 is a time chart diagram of the same, Figure 12 is a schematic diagram showing the state in which the package side and bobbin side yarn are pulled out, and Figure 13 is the yarn cutting on the package side. FIG. 3 is a schematic diagram illustrating a double yarn after splicing that occurs in the case of a mistake. (4) Winding unit (9) Traverse drum (11) Suction mouth (12) Yarn splicing device 16) Fixed guide (110) Clamp lever - (112)...Clamp fixing device (YP)...Package side thread end (YP2)...Missed cutting thread end patent issue 7th day, 10th situation yI! 190 120 Fig. 13

Claims (1)

[Claims] When restarting winding after two yarns to be spliced are introduced into a splicing device and a splicing operation is performed, the yarn path is separated from the continuous regular yarn path including the splice. A method for preventing abnormal yarn splicing in an automatic winder, which comprises starting a drum after clamping and fixing a yarn path branching from a seam or a part of a virtual yarn path.