JPH01250449A - Warp ending system in loom - Google Patents

Abstract

PURPOSE:To provide the subject automatic ending system composed of a searching means for broken end and an ending means mounted mounted on an ending truck moving along a warp row and actuating the truck by the signal of end breakage. CONSTITUTION:An ending truck 10 is stopped at a prescribed position according to the detection signal transmitted from a warp breakage detector 12, an arm 15 is swiveled to a position near a warp group and a yarn end connecting to the beam 4 of the broken warp is sucked. The arm 15 is further swiveled to guide the warp between the beam 4 and the arm 15 to a prescribed position of an ending apparatus 18, the yarn of the following yarn package 16 is sucked with a 2nd suction arm and the following yarn is guided to the ending apparatus 18. After the ending by the operation of the ending apparatus 18, the following yarn package 16 is rotated in the direction to unwind the yarn and the delivered yarn is cut with a cutter.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic splicing system for warp threads in a loom.

[Conventional technology]

In a loom used in the weaving process, a large number of warp yarns (1) as shown in FIG. ) is supplied by a weft transfer means (3) such as a shuttle, rapier, fluid, etc., and the cloth is woven.

That is, the warp thread (1) of the woven fabric drawn out from the warp thread beam (4) passes through the hole (6) of the belt (5), and passes through the hole (6) of the belt (5).
It passes through and is wound up on a roll (8) for winding up the textile.

In such a loom (S), warp yarns (1
) may be cut (X). In such a case, a warp thread breakage is detected by a warp-type cut sensing device called a dropper, and the loom immediately stops and a lamp lights up to notify the operator that the loom has been cut, and the operator is instructed to splice the threads. It has become.

In this case, the thread for splicing (9) is usually called
9) is prepared in advance near the loom, and the operator takes out the following thread (9) and connects one end of the continuous thread (9) with the end of the uncut warp thread on the warp beam side. tied together.

The other end of the continuous yarn is passed through the hole (6) of the belt (5), the reed (7), etc. by the operator, and is taped onto the fabric on the roller (8) side, and the operation of the loom is restarted.

[Problem to be solved by the invention]

As mentioned above, even if a warp thread breakage signal is issued when a warp thread breakage occurs in the loom, the signal is meaningless unless confirmed by the operator, and a long stoppage of the loom is unavoidable. In addition, a continuous yarn bundle (
9) must be prepared for each loom, making continuous yarn is troublesome, and yarn must be unraveled from a package of the same type as the warp yarn and cut to a certain size. Furthermore, depending on the size of the loom frame, there are various problems such as difficulty in splicing yarns by one operator and the need for a plurality of operators.

The present invention aims to solve the above problem.

[Means to solve the problem]

The present invention provides a yarn splicing cart that moves along the warp yarn row,
The yarn splicing cart is equipped with a child searching for cut yarn ends and a yarn splicing means for splicing the continuous yarn held by the cart itself, and the cart is positioned at a predetermined position by a thread cutting signal and automatically splices the yarn. This is how it was done.

〔Example〕

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

In Fig. 1, a yarn splicing cart (10) that splices cut warp yarns of a loom (S) is connected to a rail (10) extending in the direction in which the warp yarns are arranged.
11). In this embodiment, the truck (10) has a vertical beam (4) and a dropper (12).
) is provided so as to move above the group of warp threads between.

That is, it is desirable to arrange the yarn splicing cart (10) as close to the warp yarn cutting point as possible; for example, in the loom, warp yarn breakage is likely to occur at the reed (7). Therefore, when the weft yarn is pushed toward the woven fabric by the reed (7), there is a high possibility that the warp yarn will be cut due to contact and friction between the warp yarn and the reed.

Therefore, it is desirable to install a thread splicing trolley in front of the belt (5), that is, on the woven fabric side, but if the thread is cut between the belt (5) and the beam (4), the thread splicing trolley in front of the belt It is difficult to splice the threads. Therefore, the position of the yarn splicing cart is at least the belt (5) and the vertical beam (4).
) is preferable.

FIG. 1 shows an example in which the above-mentioned truck is arranged at the position closest to the vertical beam (4). That is, by providing it at this position, even if the warp yarn is cut at any position, the yarn end on the warp beam side can be searched for.

As shown in Figs. 1 to 3, the yarn splicing cart (10) is supported by a rail (11) via wheels (13) so as to be movable in the direction of the arrow (14), and is mainly used for vertical rotation. A first arm (15) that searches for the yarn end of the warp yarn on the beam (4) side, and a second arm (17) that pulls out the yarn from the thread tracking package (16) held by the cart (lO) itself. It has a yarn splicing device (18) that splices both yarn ends pulled out by the first and second arms, and a drive device (19) and a control device (20) that drive each of the devices.

The first arm (15) is preferably a suction arm that searches for warp ends using air suction force, and like the second arm (17), a suction arm is also preferred. Furthermore, the yarn splicing device (18) is preferably a pneumatic yarn splicing device that can splice the yarn by air force without forming a knot. Therefore, the truck (10) is equipped with a blower device (
21), or it is also possible to install a satayon duct along the running rail of the truck so that it can be connected to the pipe inside the truck as appropriate.

The opening of the first arm (15) has a certain width (W) as shown in FIG. 3, and is shaped to exert a suction effect across a plurality of warp threads. That is, by bringing the opening of the first arm (15) close to the vicinity of the cut warp threads, only the ends of the threads to be spliced can be suctioned and separated from the other uncut warp threads. one second
The arm (17) also has an opening having a width approximately equal to the package width so as to be able to suction and hold the yarn end of the continuous yarn package (16).
7) can be rotated around the hollow shafts (21) and (22) as shown in the shaft marks (23> and 24> in Figure 2). ,
It is simply a cylindrical drum that rotates the package in a direction that unravels the threads of the package, and is rotated by a driving means such as a motor.

Figure 5.6 shows the yarn splicing device (18) installed on the above-mentioned trolley.
- Give an example. In general, warp yarns on a loom are usually glued to increase yarn strength.

By the way, the above-mentioned yarn splicing device untwists the yarn ends and then rotates the untwisted yarn ends together using a swirling air flow to perform yarn splicing. However, since the warp yarns are glued, the yarn splicing device cannot untwist the yarn ends, and therefore the yarn splicing device (18
), when splicing is performed by applying a swirling air flow to the end of the cut sized yarn using a splicing device, a solution is applied to the end of the sized yarn to dissolve the glue, and then the end of the sized yarn is spliced. It is designed to be untwisted.

Hereinafter, one embodiment of the above device will be described in detail based on the accompanying drawings.

In FIG. 5, (18) is a yarn splicing device provided on the trolley (10), and when a warp yarn (sealed yarn) breaks, suction arms (15) and (17) are spliced by a mechanism not shown. The yarn side yarn 1a and the continuous yarn package side yarn YP are each sucked and held and guided to the front of the yarn splicing device (18). An arm (1
5) (17) The yarn guide levers (34) and (35) that catch the yarn 1a and YP guided to the front of the yarn splicing device (18) and guide them further inward are the shirts) (36
). As a result, the thread YP is connected to the clamp device (37) and the fork guide (38).
right side groove, thread splicing hole (39), thread cutting device (40),
Arm (17) via the right groove of the fork guide (41)
It is designed to lead to. On the other hand, the thread 1a is connected to the clamp device (42), the left groove of the fork guide (41), the thread splicing hole (39), the thread cutting device (43), and the fork guide (3).
8) and reaches the arm (15) through the left groove. The above-mentioned clamping devices (37) and (42) clamp the yarns YP and la, and the yarn cutting devices (40) and (4
3) cuts the clamped thread YP, la. The cut yarn ends YP and la are adjacent nozzle holes (44)
(45), and as shown in FIG. 6, a solution (46) for dissolving the glue is sprayed on the yarn to untwist it.

The nozzle holes (44) and (45) are formed with a blowout hole (47) that blows out a swirling air flow to untwist the yarn ends YP and la, and this blowout hole (47) receives pressure through a pipe (48). Connected to an air supply.

Further, an injector (51) for sucking the solution (46) in the solution tank (49) through a suction pipe (50) is installed in the pipe (48), and an on-off valve (
52) is provided.

Water or hot water may be used as a solution, but a solvent that decomposes the glue (
For example, it may be caustic soda with lactogen added. The pipe (48) is equipped with a thread cutting device (40
), (43) are activated until the yarn splicing starts, the on-off valve (5
2) is controlled to be opened at the same time as the supply of pressurized air starts, and closed before the supply of pressurized air is stopped. On-off valve (
By supplying pressurized air for a certain period of time after closing 52), the yarn ends YP and 1a are dried and untwisting becomes easier.

The above thread shifting levers (34) and (35) are thread #YP.

After the untwisting of 1a is completed, it is turned to align the yarn ends YP and 1a to the yarn joining hole (39). The yarn splicing hole <39) is connected to a pressure air supply source via a pipe (53), and the yarn ends YP aligned in the yarn splicing hole (39) are connected to a pressure air supply source through a pipe (53).
, la are spliced by applying a swirling air flow to them.

According to this configuration, the solution (40
) is sprayed in a mist, the glue adhering to the yarn ends YP, la is melted, and the yarn ends YP, la are untwisted.

By controlling the on-off valve (52), pressurized air is supplied to the nozzle holes (44) (45) for a while after the solution (46) is sprayed.
The yarn ends YP and la are dried and further sufficiently untwisted. Then, the untwisted yarn ends YP and la are aligned in the yarn splicing hole (39) and spliced by the effect of the swirling air flow.

In this way, the solution is sprayed on the yarn ends of the sizing type to dissolve or decompose the glue, and then the yarn ends are untwisted, so even the sizing type can be easily untwisted. Thread 1! The device can be used to splice sized yarns.

Further, since the sized yarn can be spliced using the splicing device in this way, it becomes possible to install a splicing device for splicing the warp yarns in the loom as well. Furthermore, since the solution is sprayed within the nozzle holes (44) and (45), there is no risk of the solution scattering and contaminating the outside.

Furthermore, when removing the glue by melting it, if a small amount of glue remains at the end of the thread, the glue will harden after the thread is spliced, resulting in even higher thread strength.

In addition, in the example, the solution was sprayed in the nozzle holes (44) and (45), but since it is sufficient to apply the solution before untwisting, the threads are cut by the thread cutting devices (40) and (43). Alternatively, the solution may be sprayed at the same time.

In addition, in the embodiment, the solution was sprayed onto the threads #YP and la, but the threads iYP and la may also be dipped in the solution, or the thread ends YPSla may be dried by blowing hot air. good. Note that drying of the yarn ends is not necessarily required.

Next, the operation of the yarn splicing cart will be explained.

For example, if the warp thread (Ia') is cut (X) between the belt (5a) and the warp thread beam (4) as shown in Fig. 7, the warp thread breakage detection device (12) shown in Fig. 14 is activated. Then, warp thread breakage is detected. That is, the dropper (12) shown in FIG.
As shown in the figure, it is supported on a taut warp thread (1) and has a gap between it and the lower sensing plate (54). When thread breakage occurs, the tension of the cut thread rapidly decreases, so the dropper (12) falls downward along the metal shaft (55) and comes into contact with the sensing plate (54), causing the shaft (55), The dropper (12) and the sensing plate (54) are energized by the electric wire (56), and the thread trimming display member (57), for example, a lamp, lights up. Therefore, by dividing the sensing plate (54) into individual warp yarns and taking out signal lines from each sensing plate, the position of the cut warp yarn can be detected. In addition, in this example, since it is not necessary to recognize one warp thread, the sensing plate (5
4) can be used as a common sensing plate across a plurality of warp threads. This is because the suction opening of the first suction arm (15) for searching for warp threads is wide, so if the opening of the suction arm is located near the position of the cut warp thread, the cut thread end will be suctioned and it can be searched. It is.

The yarn splicing cart (10) stops at a predetermined position based on the detection signal of the warp yarn breakage detection device (12). Then the first
The arm (15) rotates to the position shown in FIG. 3, that is, close to the warp thread group, and suctions the end of the cut warp thread connected to the beam (4). That is, if the warp yarn portion (1a) near the beam (4) in FIG. 7 is suctioned, the yarn end portion (1a) whose tip is free is easily suctioned by the suction arm. Furthermore, even if the cut point is between the belt (5a) and the reed (7), the suction force will cause the thread connected to the beam (4) to pass through the belt (5a) and be sucked into the suction arm (15). Ru.

The above-mentioned first suction arm is connected to the dashed line (23) in Figure 2.
), the beam (4) and suction arm (1
5) The warp yarns between the yarn splicing devices (18) are guided to a predetermined position.

On the other hand, the second suction arm (17
) rotates to a position close to the surface of the yarn chasing package (16) as shown in Fig. 2.3, sucks the yarn end on the package (16) side, and causes the drum (25) to move the yarn in the unraveling direction of the package. The package (16) is rotated and pivoted in the direction of the arrow (24) in FIG.
) and the second suction arm (17) are guided to the splicing device (18).

Next, when the yarn splicing is performed by the operation of the yarn splicing device (18) described above, additional yarn is passed through the belt and the reed so that the yarn length is sufficient to fix the yarn end on the woven fabric. Rotate the yarn package (16) a predetermined amount in the yarn unraveling direction,
After pulling out the thread, the thread is cut by a cutter (58) shown in the third figure. Therefore, a sufficient length of continuous threads connected to the warp thread beam (4) has been prepared.

In addition, as shown in Figure 7, the cloth roll (8) produced by cutting the warp threads
The side thread end portion (1b) is connected to the suction arm (5) in Fig. 1.
9), it is preferable to suction and cut at a position near the cloth, and remove the excess thread by suction. Note that it is possible to arrange the suction arm (59) so as to extend from the yarn splicing cart (lO).

Next, a threading operation is performed for the spliced yarns connected to the warp yarn beam. At this time, it is desirable to level and wipe all belts to the same height.

The above-mentioned threading can be carried out manually using a known threading device, but it is also possible to carry out the threading by providing an automatic threading device in the thread splicing carriage. For example, as shown in Figure 7.8, where the warp threads are cut, the gap (A) between the warp threads is larger than the gap (a) between the other warp threads, so this wide gap can be removed mechanically or optically. warp threads (lc) (ld) on both sides of the thread path of the cut warp thread (1a).
By bringing the guide pieces (60) and (61) into contact with each other from the cart side and pushing them apart in the directions of arrows (62 and 63) in Fig. 7, the belt to which the continuous yarn (YP) should be passed is made as shown in Fig. 8. Large spaces (64) are created on both sides of (5a).

Utilizing this space, from the cart side, the yarn end holding member (65) was placed on standby at a position on the cloth roll (8) side of the belt, and gripped the end (YPI) of the continuous yarn (YP). The arm member is attached to the warp thread beam (4) of the belt (5a).
Threading of the belt (5a) is completed by passing the tip of the thread to the waiting thread holding member (65).

By threading the dropper prior to the belt, and then threading the reed (7) in the same manner after threading the belt, the tip of the thread end of the continuous thread can be guided onto the fabric roll (8).

Next, the tip of the thread end of the continuous thread that has been threaded is fixed on the fabric (F), that is, it is pasted with tape or the thread end holding member (Fig. 8 (65)) is attached to the fabric (F). If the loom is stopped at the top position and the loom is restarted, after several weft threads have been driven in, even if the ends of the threads are released, the threads will still be woven into the center and fall. Never.

The yarn splicing cart (10) is arranged so that one loom corresponds to one loom, or one yarn splicing cart corresponds to a plurality of looms, and the yarn splicing cart (10) travels to the corresponding loom in response to a thread cutting signal. The yarn splicing described above can be performed.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to automatically perform thread splicing on a loom using a movable splicing cart, thereby avoiding troublesome thread splicing operations by the operator.
The effort and space required to equip the loom with the east end of the continuous yarn can be omitted, and the operating efficiency of the loom factory can be further improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an embodiment of the system of the present invention, Fig. 2 is a side view showing an embodiment of the yarn splicing cart, Fig. 3 is a front view thereof, and Fig. 4 is a warp yarn breakage detection device. A side view showing the
Fig. 5 is a front view showing an example of a yarn splicing device, Fig. 6 is a sectional view showing a yarn end untwisting device, Fig. 7 is a plan view showing a warp thread being cut, and Fig. 8 is a warp thread thread. FIG. 9 is a schematic plan view showing the threading method, and a tilted view showing the warp thread cutting state. (1) (la) Warp yarn (10) Yarn splicing cart (15) First arm (16) Yarn tracking package (17) Second arm (18) Yarn splicing device

Claims (1)

[Claims] A yarn splicing cart that moves along the warp yarn row of the loom is provided, and the yarn splicing cart includes a means for searching for a yarn end on the warp beam side of the cut warp yarn, and a means for splicing the yarn end and one end of the trailing yarn. 1. A warp yarn splicing system for a loom, characterized in that a warp yarn splicing means is provided, and the cart is moved to a predetermined position in response to a warp yarn breakage signal to perform yarn splicing.