JPH0578040A - Transfer tail forming device - Google Patents

Abstract

PURPOSE:To simplify the general movement control and the movement mechanism of a grasping means by arranging operating part of the grasping means of the thread end of a feeding body to position on the moving locus or near the moving locus of the thread end when the feeding body is being moved. CONSTITUTION:Suction pipes 42 and 40 as grasping means to grasp the thread head 12a of one side feeding body 12 and the thread tail 12b of the other side feeding body 12, and a knotter 38 to connect the grasped both thread ends are provided, and the operating parts of the suction pipes 42 and 40 are arranged to position on the moving locus or near the moving locus of the thread ends of the feeding bodies 12 when the feeding bodies 12 are moved. By arranging in such a way, the grasping of the thread ends may be carried out when the thread ends approach to the operating parts of the suction pipes 42 and 40, and it is not necessary to move the suction pipes 42 and 40 to the thread ends to grasp the thread ends. As a result, the movement control and the movement mechanism of the suction pipes 42 and 40, and the like, for grasping the thread ends can be made unnecessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to forming a transfer tail between a pair of adjacent yarn feeders which are movably held by a yarn feeding stand installed for feeding a weft yarn to a loom. Of equipment.

[0002]

2. Description of the Related Art Conventionally, in order to form a transfer tail between a pair of yarn feeders held on a yarn feeder stand, a catching means comprising a suction tube for catching the yarn end of each yarn feeder, There is a device having a knotter for joining the two yarn ends caught by the catching means to each other (JP-A-1-317965).
issue). In this transfer tail forming apparatus, the action part of each catching means is placed at a position separated from the rotation locus of each yarn feeder in the yarn feeding stand, and the catching of each yarn end moves each catching means to move its action part. This is done by approaching each yarn end.

[0003]

By the way, each catching means which has caught each yarn end is further moved toward the knotter so as to set each yarn end in the working area of the knotter. If the movement of the capturing means can be reduced,
It is considered that the movement control of the capturing means is simplified and the mechanism for moving the capturing means is also simplified. Therefore, an object of the present invention is to minimize the movement of the catching means for catching the yarn end of the yarn feeder supported by the yarn feeding stand.

[0004]

[Means for Solving the Problems, Actions and Effects of the Invention]
The present invention is an apparatus for forming a transfer tail between a pair of adjacent yarn feeders that are movably held on a yarn feeder stand, and is a device for forming a transfer tail of one yarn feeder and another yarn feeder. Including a catching means for catching the thread end of the body, and a knotter for joining both thread ends caught by the catching means,
The catching means is arranged such that the action portion of the catching means is located on or near the movement locus of the yarn end of the yarn feeder when the yarn feeder is moved. According to the present invention, the catching means is arranged so that the action portion of the catching means is located on or near the movement locus of the yarn end of the yarn supplying body when the yarn supplying body is moved. Therefore, the yarn end may be caught only after the yarn end is close to the acting portion of the catching means. Therefore, it is not necessary to move the catching means to the yarn end in order to catch the yarn end. As a result, the movement control and movement mechanism of the catching means for catching the yarn end can be dispensed with, and the overall movement control and movement mechanism of the catching means can be simplified.

The catching means is such that the action portion of the catching means is on or near the movement locus of the yarn end of the yarn supplying body when the yarn supplying body is moved, and the yarn supplying body supplies the yarn. It can be arranged so as to be located on or near the movement locus of the yarn end of the yarn feeder when being fed to the yarn stand. This also eliminates or minimizes the need to move the catching means to the yarn end in order to catch the yarn end.

[0006] The catching means is movable together with the yarn supplying body, and the action part of the catching means is a locus of movement of a yarn end of the yarn supplying body when the yarn supplying body is supplied to the yarn supplying stand. You may arrange | position so that it may be located above or in its vicinity.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, there is shown a yarn feeding means 10 installed in the vicinity of a weaving machine (not shown) installed in a weaving factory for supplying the weft thread. There is.

The illustrated yarn supplying means 10 comprises a yarn supplying stand, and can hold three yarn supplying bodies 12 formed by winding a weft yarn on a bobbin 11. The yarn feeding means 10 is a post 1
4 and a rotating portion 16 supported by the post 14 and rotatable about one axis in the illustrated example in a counterclockwise direction. The rotating part 16 receives a part of a tray 22 described below, which is arranged at an angle of rotation of 120 degrees around the one axis, and thereby has three recesses 18 for holding the yarn feeder 12 in the rotating part 16. Have.

According to the yarn feeder stand 10, the three yarn feeders are provided at a feeding position above the extension of the post, a waiting position 120 degrees counterclockwise from the feeding position around the uniaxial line, and the feeding position. It is held in the unwinding position, which is 120 degrees clockwise away from the position around the one axis. A new yarn supplying body is supplied from the conveying means 34 described later to the supply position, and the bobbin 11 remaining after the weft yarn is consumed is collected from the supply position. A weft yarn is supplied from the yarn supplying body 12 at the release position toward the loom, and a spare yarn supplying body 12 is arranged at the standby position. Due to the continuous feeding of the weft yarns, the yarn ends of the pair of yarn feeders 12 adjacent to each other are joined to each other, whereby a transfer tail is formed.

Each yarn feeder 12 is held by the yarn feeding means 10 via a tray 22. The tray 22 includes a plate portion 24 facing the large-diameter end of the bobbin 11, and a truncated conical fitting portion 26 extending from the plate portion 24 orthogonally thereto and fitted into the bobbin 11 of the yarn feeder 12. And a pair of yarn end holding portions 28 and 30 capable of releasably gripping the yarn end. The plate portion 24 of the tray has a tip portion that is fitted into the recess 18 of the rotating portion 16 of the yarn feeding means 10 and is releasably fixed.
Each of the holding portions 28 and 30 has a support rod 24 extending from the plate portion 24.
a and a pair of opposing discs 24b and 24c provided at the tip of the support rod, one disc 24b being fixed to the support rod 24a and the other disc 24c being the support rod 24a.
Is attached so as to be movable in the axial direction, and a spring force is applied to one of the discs 24b. Therefore, the yarn end of the yarn supplying body 12 is in the middle of the two discs 24b, 24
It is held between c and held.

The yarn supplying body 12 is hung from a rail 32 installed on the ceiling of the woven fabric factory and can travel along the rail 32 through a conveying means 34 called a doffer, which is used for the woven fabric factory. Is conveyed from the preparation room (not shown) to the yarn supplying means 10. The transporting means 34 includes a pair of yarn feeders 12.
It is equipped with two pairs of arms 36 capable of lifting and lowering. Each pair of arms 36 can swing about horizontal axes that are parallel to each other. The tips of the arms 36 of each pair are hook-shaped, and when they swing toward each other toward each other, that is, in the closing direction, the bobbin 11 of the yarn feeder 12 is moved.
It is possible to grip the yarn feeder 12 by engaging with the small-diameter end of the bobbin 11 and a hole (not shown) provided in the plate portion 24 of the tray 22 and concentric with the large-diameter end of the bobbin 11. On the contrary, by swinging each pair of arms 36 in the opening direction, the grasped state of the yarn feeder 12 is released.

When the conveying means 34 is stopped so that the pair of arms 36 are located right above the rotating part 16 of the yarn supplying means 10 and the pair of arms 36 is lowered, the rotating part located above the extension of the post 14 is stopped. The tip portion of the plate portion 24 of the tray 22 enters one of the 16 recesses 18. Thus, the yarn feeder 12 gripped by the pair of arms 36 is fed to the feeding position of the yarn feeding means 10 (FIGS. 9 and 10). The bobbin 1 placed at the supply position before the supply of the yarn feeder 12
The other pair of arms 36 descends toward the bobbin 1
1 and the tray 22 are collected by gripping them (see FIGS. 7 and 8).

In the vicinity of the yarn supplying means 10, a pair of yarn ends held by the yarn supplying means 10 and extending from a pair of adjacent yarn supplying bodies 12, that is, the head yarn 12a of one yarn supplying body and the other yarn supplying body. A knotter 38 for mutually joining the bottom thread 12b of the
Capturing both thread ends respectively, and further, capturing both thread ends,
A first catching means and a second catching means capable of moving to a working area of the knotter 38, that is, an area in which the knotter 38 makes an operation of connecting both yarn ends with each other, in the illustrated example, a suction tube 40 and The suction pipe 42 is arranged. A movable yarn gripping device as another example of the capturing means, or a combination of a stationary suction pipe that does not move and a yarn guide that can move the yarn end captured by the suction pipe to the work area of the knotter. Can be used.

The knotter 38 and the suction tubes 40, 42 form a part of the transfer tail forming apparatus according to the present invention. The illustrated knotter 38 and suction tubes 40, 42 are attached to the loom. The suction tube, as will be described later,
It can be attached to the rotating part of the yarn supplying means 10.

In the example shown in FIGS. 1 to 13, the opening end portion, which is the operating portion of one suction tube 42, has the tray holding portion 2 when the yarn feeding body 12 is fed to the yarn feeding means 10 by the conveying means 34.
It is located on or near the moving path through which the head thread 12a held by 8 passes. Therefore, the suction tube 42 sucks the head yarn 12 a of the yarn feeder 12 that hangs down from the tip of the holding portion 28 of the tray until the yarn feeder 12 is lowered and held by the yarn feeding means 10. Can be pulled into. In addition, the opening end of the other suction tube 40 moves counterclockwise from the supply position toward the standby position.
The trailing thread 12b held by the holding portion 30 of the tray that is rotated together with the trailing thread 12b is positioned on or near the rotation path.
Therefore, the suction tube 40 can suck the tail yarn 12b of the yarn feeder that hangs down from the holding portion 30 and pull it into the yarn feeder 12 during the rotational movement of the yarn feeder 12. Suction tube 40,4
In the case of a yarn feeder to which a tray having no holding portions 28 and 30 is attached, the opening end 2 is located on or near the movement locus of the yarn end hanging from the yarn feeder.
In this case, it is desirable that a part of the yarn end be fixed in advance at a certain position of the yarn feeder so that the movement loci of the yarn ends of the individual yarn feeders are the same. For example, the yarn end may be held on the surface of the yarn feeder with only fluff, or may be glued to the surface of the yarn feeder so that weft insertion is not hindered.

Referring to FIG. 3, the three yarn feeders 12 are held by the rotating portion 16 of the yarn feeding means, and the yarn feeders 12 at the supply position and the standby position, between the standby position and the unwinding position. Transfer tails are formed between the two yarn feeders 12 at the respective positions. From the yarn supplying body 12 in the unwinding position, weft yarn is supplied to the loom through the yarn guide 44.

As shown in FIGS. 4 and 5, when the weft of the yarn feeder 12 in the unwinding position is consumed, the auxiliary yarn feeder 1 in the standby position on the left side is transferred through the transfer tail.
Weft yarn is supplied from 2. As shown in FIG. 6 and FIG. 7, while the weft yarn is being supplied from the yarn feeder 12 at the standby position, the rotating portion 16 is rotated counterclockwise by 120 degrees, and the tray 22 and the bobbin that are in the unwinding position are rotated. 11 (however, it is simplified for the convenience of drawing) is moved to the supply position. At the same time when the rotating unit 16 starts rotating, the suction pipe 40 starts the suction operation. At this time, the suction pipe 42 is in the inoperative state. During this time, as shown in FIG. 6, the tail yarn 12b of the yarn supplying body 12 which was at the supply position is sucked by the suction pipe 40 during its rotation.

Thereafter, as shown in FIG. 8, the tray 22 and the bobbin 11 are recovered by the operation of the conveying means, and this time, as shown in FIGS. 9 and 10, a new yarn feeder 12 is rotated. 16 are supplied. When the conveying means 34 moves to a predetermined position above the yarn supplying means 10, or when the yarn supplying body 12 starts to descend by the pair of arms 36, the suction pipe 42 starts the suction operation. For this reason, during the supply of the yarn feeder 12, the head yarn 12a of the yarn feeder 12 is
Be drawn to 2.

After supplying the yarn supplying body 12, as shown in FIG. 11, the suction pipes 40 and 42 are respectively moved to move the head yarn 12a and the tail yarn 12b held in the suction pipe to the work area of the knotter 38. And intersect at the work area. At this time, the head yarn 12a and the tail yarn 12b are in a state of being held by the holding portions 28 and 30 in the middle thereof, and the suction tubes 40 and 4
Along with the movement of 2, it is guided while being pulled out from the suction pipe. Next, as shown in FIG. 12, the knotter 38 is operated to join the head yarn 12a and the tail yarn 12b to form a transfer tail. After formation of the transfer tail, Fig. 1
As shown in FIG. 3, both suction pipes 40 and 42 are returned to the original position, that is, the same position as the position shown in FIG. 3, and the suction operation is stopped.

In the above-described embodiment, the head yarn 12a of the yarn feeder is
And a pair of suction tubes 40 for capturing the tail thread 12b,
Although 42 is provided, one of them can be omitted to form a single suction tube. For example, the opening end of the suction tube 40 is near the rotation locus of the tail thread 12b and the head thread 1
Since it is located near the movement trajectory of 2a, the suction tube 4
2 can be omitted. In addition, the suction tube, the head thread 12
By allowing movement between a predetermined position near the movement locus of a and the predetermined position near the rotation locus of the tail thread 12b, the vicinity of the movement locus of the head thread 12a and the vicinity of the rotation locus of the tail thread 12b. Even if there is no common part to and, it is possible to capture the yarn end with only a single suction tube. That is, during the rotation operation of the yarn feeding stand, after the tail yarn 12b is captured at a predetermined position near the rotation locus of the tail yarn 12b, the suction tube is moved to a predetermined position near the movement locus of the head yarn 12a to supply the yarn. The head thread 12a can be captured while the thread 12 is being supplied. In this modified example, the amount of movement of the suction pipe is larger than that of the other embodiments in that the suction pipe is moved between two positions, but the amount of movement is smaller than in the conventional example in which the yarn end is captured. Further, since the predetermined position can be set to any position on or near the movement locus of the yarn end, the position selection range is large and the movement amount can be further reduced.

Next, referring to FIGS. 14 to 24, in order to capture the yarn end (tail yarn) 12b of one yarn feeder 12A and the yarn end (head yarn) 12a of the other yarn feeder 12B. The example using the suction tube 46 which is the capturing means of the above is shown. The suction pipe 46 is installed in the loom, and its open end is
It is arranged so as to be located on or near the rotation locus of the yarn ends 12a, 12b of the yarn feeder when the yarn feeder is rotated around the one axis.

As shown in FIGS. 14 to 16, when the weft of the yarn feeder 12 in the unwinding position is consumed, the auxiliary yarn feeder 12A at the standby position on the left side is transferred through the transfer tail.
The weft yarn is supplied. As shown in FIGS. 17 to 19, the rotary unit 16 is rotated 120 degrees counterclockwise during the feeding of the weft yarn from the yarn feeder 12A at the standby position, and the tray 22 and the bobbin which are at the unwinding position are rotated. 11 is moved to the supply position. When the rotating unit 16 starts rotating, the suction pipe 46 starts the suction operation. During this time, FIG.
19, the tail yarn 12b of the yarn supplying body 12A in the standby position is sucked, that is, caught by the suction pipe 46 during its rotation, and subsequently, as shown in FIG. The head thread 12a of the body 12B is sucked by the same suction tube 46 during its rotation.

Thereafter, as shown in FIGS. 20 to 24, the tray 22 and the bobbin 11 are operated by the operation of the conveying means.
Are collected (FIG. 23), and then a new yarn feeder 12 is supplied to the rotating section 16 (FIG. 24). Prior to the recovery of the tray 22 and the bobbin 11, the suction tube 46 holding the yarn ends 12a and 12b is moved to the work area of the knotter 38 to pull the yarn ends 12a and 12b into the work area of the knotter 38. Alignment (FIG. 20) and actuating the knotter 38 to join the yarn ends 12a and 12b (FIG. 21). After the transfer tail is formed, the suction pipe 46 is returned to the same position as the original position shown in FIG. 14, and the suction operation is stopped. In the above-described embodiment, since the middles of the yarn ends 12a and 12b of the yarn feeder are held by the holding portions 28 and 30, respectively, and the respective loci of rotation are the same, a single suction tube is used. However, if the rotation trajectories are different, each thread end 12
A suction tube is provided for each of a and 12b. Alternatively, a single suction tube may be installed at a position near the rotation locus of the yarn end 12a and the yarn end 12a.
It is possible to move between the position near the rotation locus of b and the single suction pipe of the two positions while the rotating part 16 of the yarn supplying means 10 is rotating 120 degrees counterclockwise. The yarn ends 12a and 12b may be caught by moving the yarn between them.

Next, referring to FIGS. 25 to 35, there is shown an example in which a suction tube 48 which is attached to the rotating portion 16 of the yarn feeding stand and is rotatable around the uniaxial line together with the yarn feeder is shown. .. The suction pipe 48 is arranged between the positions of the supply, the standby and the unwinding which are adjacent to each other. A yarn guide 50 installed on the loom is arranged so that it can move toward the work area of the knotter 38. Since the suction tube 48 catches the yarn end (tail yarn) 12b of the one yarn feeder 12A and the yarn end (head yarn) 12a of the other yarn feeder 12B (FIG. 32), its open end is , Each of the yarn feeders 12A and 12B is rotated by the conveying means 34 to the rotating portion
It is arranged so as to be positioned on or near the movement loci of the yarn ends 12a and 12b of the yarn feeder when the yarn is supplied to.

As shown in FIGS. 25 to 27, when the weft yarn of the yarn feeder 12 in the unwinding position is consumed, the weft yarn is fed from the auxiliary yarn feeder 12 in the standby position on the left side via the transfer tail. Is supplied. Prior to the supply of the weft yarn from the spare yarn supplying body 12, the yarn supplying body 12A is supplied to the yarn supplying means 10, and when the yarn supplying body A is lowered for the supply, the supply position and the unwinding The suction tube 48 between the position and the tail thread 1
Aspirate 2b. As shown in FIGS. 28 to 30, while the weft yarn is being fed from the yarn feeder 12 at the standby position, the rotating unit 1
6 is rotated counterclockwise by 120 degrees, and the tray 22 and the bobbin 11 in the unwinding position are moved to the supply position. At this time, the tail yarn 12b of the yarn feeder 12A is sucked,
The held suction tube 48 rotates 120 degrees counterclockwise together with the rotating portion 16 and moves toward the front of the yarn guide 50 to the rear thread 1.
2b is guided, and it is located in the vicinity of the movement locus of the head yarn 12a of the yarn supplying body 12B which is supplied later by the conveying means 34. Further, the other suction tube 48 rotates in the same manner, so that the suction tube 48 is positioned near the movement locus of the tail yarn 12b of the yarn supplying body 12B to be supplied later.

Thereafter, the tray 22 and the bobbin 11 are recovered by the operation of the conveying means, and a new yarn feeder 12 is provided.
B is supplied to the rotating unit 16. For supply, yarn feeder 1
When 2B is lowered, its head thread 12a is
The tail thread 12b of A is drawn into the suction tube 48, and the bottom thread 12b of the yarn feeder 12B is drawn into another suction tube 48 (FIGS. 31 and 32). Next, the suction tube 48
The yarn ends 12a and 12b held by the yarn guide 50 are moved to the work area of the knotter 38 by the yarn guide 50 (see FIG. 3).
3), while the yarn ends are in the working area, the knotter 38 is operated to join the yarn ends 12a and 12b (Fig. 3).
4). After forming the transfer tail, the yarn guide 50
Is returned to the same position as the original position shown in FIG. 25 (FIG. 35).

In the above-mentioned embodiment, the suction pipes 48 are arranged between the adjoining positions of the supply, the standby and the unwinding, and are attached to the rotating part 16 of the yarn feeding stand. Not limited to the configuration, for example, two suction pipes are respectively arranged at a predetermined position between the supply position and the standby position and a predetermined position between the supply position and the unwinding position, and The two suction tubes may be attached independently of the rotating part 16 of the thread stand so as to be movable between the two predetermined positions in opposite directions. The two predetermined positions are the position of the suction tube placed between the supply position and the standby position shown in FIGS. 25 to 35, and between the supply position and the unwinding position. Corresponds to the position of the suction tube placed. The operation of the transfer tail forming apparatus using such a suction tube will be described. When the weft yarn of the yarn feeder at the unwinding position is used, the bottom yarn of the yarn feeder at the supplying position is attached to one suction tube at a predetermined position between the supplying position and the unwinding position. Is sucked and held. At this time, the other suction tube is placed at a predetermined position between the supply position and the standby position, but the yarn end is not captured. When the weft yarn of the yarn feeder at the unwinding position is consumed, the weft yarn is supplied from the spare yarn feeder through the transfer tail, and then the rotating unit 1
6 rotates 120 degrees counterclockwise. During this rotation, the one suction pipe moves to a predetermined position where the other suction pipe was located while capturing the tail yarn of the yarn feeder located at the supply position. At the same time, the other suction tube
It moves to the predetermined position where the one suction tube was located.
That is, the positions of both suction tubes are switched. The tray and the bobbin are collected by the conveying unit 34, and a new yarn feeder is supplied to the rotating unit 16. While the new yarn feeder is descending, the head yarn of the new yarn feeder is drawn into the one suction pipe that draws the tail yarn, and the tail yarn of the new yarn feeder is drawn into the other suction pipe. Next, both yarn ends held in one suction tube are moved to the working area of the knotter by the yarn guide, and then the knotter is operated and continued.

Finally, please refer to FIGS. A first suction tube 52 attached to the rotating part 16 of the yarn supplying stand and rotatable with the yarn supplying body around the one axis.
And a second suction tube 56 mounted on the loom and movable towards the working area of the knotter 38.

The first suction pipes 52 are arranged between the supply, standby and unwinding positions adjacent to each other. Further, the knotter 38 is movable toward the work area. The first suction pipe 52 is for drawing in the tail yarn 12b when a new yarn feeder is lowered to the feeding position for feeding to the yarn feeding stand. In detail,
As shown in FIG. 36, the first suction tube 52 arranged between the supply position and the standby position captures the yarn end (tail yarn 12b) of the yarn feeder 12A, but Bottom thread 12b
Is sucked by the first suction pipe 52 that opens at or near the movement locus of the tail yarn 12b while the yarn feeder 12A is lowered to the feeding position for feeding to the yarn feeding stand. .. At this time, the first suction pipe 52 corresponding to the tail yarn 12b of the yarn feeder 12A is arranged between the supply position and the unwinding position.

Further, as shown in FIG. 36, the first suction pipe 52 arranged between the supply position and the unwinding position captures the yarn end (tail yarn) 12b of the yarn supplying body 12B, The open end is arranged so as to be located on or near the movement locus of one yarn end of the yarn supplying body 12B when the yarn supplying body 12B is supplied to the yarn supplying stand. The second suction tube 56 is provided to catch the other yarn end (head yarn) 12a of the yarn feeder 12B which is rotated to the standby position together with the rotating portion 16, and the open end portion thereof is the yarn feeder. 12B is arranged so as to be positioned on or near the rotation locus of the head yarn 12a of the yarn supplying body 12B when the yarn 12B is rotated around the one axis.

As shown in FIGS. 36 to 38, when the weft of the yarn feeder 12 in the unwinding position is consumed, the auxiliary yarn feeder 12A at the standby position on the left side is transferred via the transfer tail.
The weft yarn is supplied. As shown in FIGS. 39 and 40, while the weft yarn is being supplied from the yarn feeder 12A at the standby position, the rotating portion 16 is rotated counterclockwise by an angle of 120 degrees, and the tray at the unwinding position is shown. 22 and bobbin 1
1 is moved to the supply position. Further, during this time, the head yarn 12a of the yarn feeder 12B moving to the standby position is sucked by the second suction tube 56 in the standby state. Further, the yarn feeder 12
When A moves to the unwinding position, the tail thread 12b held by the first suction tube 52 is located in the work area of the knotter 38 (FIG. 40).

After that, the second suction tube 56 is moved to the work area of the knotter 38, and the head yarn 1 held by the second suction tube 1
2a intersects the tail thread 12b held by the first suction tube in the work area (FIG. 41). Next, knotter 3
8 is moved to the work area, and the yarn ends 12a and 12b held by the suction pipes 52 and 56 are joined to each other by the knotter 38 (FIG. 42). After the transfer tail is formed, the second suction tube and the knotter 38 are in their original positions.
Return to the same position as shown in FIG. 6 (FIG. 43). After that, the tray 22 and the bobbin 11 at the supply position are collected by the operation of the carrying means (FIG. 44), and after the collection, a new yarn feeder 12 is supplied to the supply position of the rotating portion 16 (FIG. 45).

In each of the above-mentioned embodiments, the yarn supplying stand rotates the yarn supplying body around the uniaxial line, but the yarn supplying stand may be a type which linearly moves the yarn supplying body. Good. In this case, the yarn feeding stand is composed of a horizontally arranged belt conveyor, and three yarn feeding bodies can be arranged side by side at the unwinding position, the standby position and the feeding position on the upper surface of the endless belt. Further, as the capturing means, a gripping member composed of a pair of gripping bodies can be used instead of the suction tube. The acting portion of the gripping member is between the pair of gripping bodies when the gripping member is in the open state. When the gripping member is used as the catching means, the gripping member is arranged such that its action portion is located on the movement trajectory of the yarn end. In the embodiment described above, when the suction tube and the thread end are relatively separated after the suction tube pulls the thread end into the inside,
The thread end is pulled out from the inside of the suction tube. However, when the gripping member is used as the capturing means, the gripping member grips the middle of the thread end and the gripping member and the thread end are relatively separated from each other. As described above, the yarn end between the pair of grasping bodies may be weakly grasped so as to be released while being positioned therebetween.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a knotter and a catching means of a transfer tail forming apparatus according to the present invention together with a yarn supplying means and a yarn feeding body conveying device.

FIG. 2 is a schematic side view showing the catching means together with the yarn supplying means.

FIG. 3 is a schematic diagram showing a state in which three yarn feeders are held by a yarn feeder and a weft yarn is being fed from the yarn feeders in an unwinding position.

FIG. 4 is a schematic diagram showing a state in which the weft of the yarn feeder in the unwinding position is consumed and the supply source of the weft moves to the yarn feeder in the standby position.

FIG. 5 is a schematic diagram showing a state in which a weft yarn supply source is moved to a yarn feeder at a standby position.

FIG. 6 is a schematic view showing a state in which the rotating portion of the yarn supplying means is in the process of rotation and the tail yarn of the yarn supplying body at the supply position is drawn into the first suction tube.

FIG. 7 is a schematic view showing a state immediately after the rotating portion is rotated by a rotation angle of 120 degrees.

FIG. 8 is a schematic diagram showing a state in which the tray moved to the supply position by the rotation of the rotating unit is being moved upward.

FIG. 9 is a schematic view showing a state in which a new yarn feeder is lowered to feed it to the yarn feeder, and its head yarn is drawn into the second suction tube.

FIG. 10 is a schematic view showing a state in which a new yarn feeder is held by a rotating unit.

FIG. 11 is a schematic view showing a state in which both suction pipes have been moved in order to move both yarn ends sucked by and maintained by both suction pipes to the work area of the knotter.

FIG. 12 is a schematic view showing a state in which a transfer tail is formed by a knotter.

13 is a schematic view showing a state where both suction tubes are returned to the original positions shown in FIG.

FIG. 14 is a schematic view showing a state in which three yarn feeders are held by a yarn feeder and a weft yarn is fed from the yarn feeders in the unwinding position in another embodiment.

FIG. 15 is a schematic diagram showing a state in which the weft of the yarn feeder in the unwinding position is consumed and the supply source of the weft moves to the yarn feeder in the standby position.

FIG. 16 is a schematic diagram showing a state in which a weft yarn supply source is moved to a yarn feeder at a standby position.

FIG. 17 is a schematic view showing a state in which the rotating portion of the yarn supplying means is in the process of rotation and the tail yarn of the yarn supplying body at the standby position is drawn into the suction tube.

FIG. 18 is a schematic view showing a state immediately before the rotating portion is rotated by a rotation angle of 120 degrees.

FIG. 19 is a schematic view showing a state in which the rotating portion is rotated by a rotation angle of 120 degrees, and the head yarn of the yarn supplying body at the supply position is drawn into the suction tube.

FIG. 20 is a schematic view showing a state in which the suction tube has been moved in order to move both yarn ends sucked by and maintained by the suction tube to the work area of the knotter.

FIG. 21 is a schematic view showing a state in which a transfer tail is formed by a knotter.

22 is a schematic view showing a state where the suction tube is returned to the original position shown in FIG.

FIG. 23 is a schematic view showing a state where the tray moved to the supply position by the rotation of the rotating unit is being moved upward.

FIG. 24 is a schematic view showing a state in which a new yarn feeder is being lowered to feed the yarn feeder.

FIG. 25 is a schematic view showing a state in which, in another embodiment, three yarn feeders are held by the yarn feeder and the weft yarns are fed from the yarn feeders in the unwinding position.

FIG. 26 is a schematic view showing a state in which the weft of the yarn feeder in the unwinding position is consumed and the supply source of the weft moves to the yarn feeder in the standby position.

FIG. 27 is a schematic view showing a state in which a weft yarn supply source is moved to a yarn feeder at a standby position.

FIG. 28 is a schematic view showing a state in which the rotating portion of the yarn supplying means is in the process of rotating.

FIG. 29 is a schematic view showing a state immediately after the rotating portion is rotated by a rotation angle of 120 degrees.

FIG. 30 is a schematic view showing a state where the tray moved to the supply position by the rotation of the rotating unit is moved upward.

FIG. 31 is a schematic view showing a state in which a new yarn feeder is being lowered to feed the yarn feeder.

FIG. 32 is a schematic diagram showing a state in which the supplied head yarn of the yarn feeder is drawn into the suction tube.

FIG. 33 is a schematic view showing a state in which both yarn ends held by a suction tube are moved to a work area of a knotter by a yarn guide.

FIG. 34 is a schematic view showing a state in which a transfer tail is formed by a knotter.

FIG. 35 is a schematic view showing a state where the yarn guide is returned to the original position shown in FIG. 25.

FIG. 36 Furthermore, in another example, the three yarn feeders are held by the yarn feeding means, the weft yarns are supplied from the yarn feeders in the unwinding position, and the bottom yarn of one yarn feeder is the first suction member. It is a schematic diagram showing the state where it was sucked into the tube.

FIG. 37 is a schematic diagram showing a state in which the weft of the yarn feeder in the unwinding position is consumed and the supply source of the weft moves to the yarn feeder in the standby position.

FIG. 38 is a schematic view showing a state in which the weft yarn supply source is moved to the yarn feeder at the standby position.

FIG. 39 is a schematic view showing a state where the rotating portion of the yarn supplying means is in the process of rotating.

FIG. 40: The rotating part is rotated by a rotating angle of 120 degrees, and the head yarns of other yarn feeders are sucked into the second suction tube, and
FIG. 9 is a schematic view showing a state in which the tail yarn sucked by the suction pipe of FIG.

FIG. 41 is a schematic view showing a state in which the second suction tube has been moved in order to move the head yarn held by the second suction tube to the work area of the knotter.

FIG. 42 is a schematic view showing a state in which the knotter has been moved to its work area and both yarn ends have been joined.

FIG. 43 is a schematic view showing a state where the knotter has been returned to the original position shown in FIG. 36.

FIG. 44 is a schematic view showing a state in which the tray moved to the supply position by the rotation of the rotating unit is moved upward.

FIG. 45 is a schematic view showing a state in which a new yarn feeder is lowered to feed the yarn feeder.

[Explanation of symbols]

 10 yarn feeding stand 12 yarn feeder 38 knotter 40, 42 first and second suction pipes 46, 48 suction pipe 52, 56 first and second suction pipes

Claims (3)

[Claims] 1. A device for forming a transfer tail between a pair of adjacent yarn feeders movably held on a yarn feeder stand, the yarn end of one yarn feeder and the yarn feeding of the other yarn feeder. A catching means for catching the yarn end of the yarn body, and a knotter for joining both yarn ends caught by the catching means, wherein the catching means has an action part of the catching means. A transfer tail forming device, which is arranged so as to be positioned on or near a movement locus of a yarn end of the yarn supplying body when the body is moved. 2. A device for forming a transfer tail between a pair of adjacent yarn feeders movably held on a yarn feeder stand, the yarn end of one yarn feeder and the yarn feeding of the other yarn feeder. A catching means for catching the yarn end of the yarn body, and a knotter for joining both yarn ends caught by the catching means, wherein the catching means has an action part of the catching means. A locus of movement of the yarn end of the yarn feeder on or near the movement locus of the yarn feeder when the body is moved and when the yarn feeder is fed to the yarn feeding stand. The transfer tail forming device is arranged so as to be located on or near the transfer tail forming device. 3. An apparatus for forming a transfer tail between a pair of adjacent yarn feeders movably held on a yarn feeder stand, the device being movable with the yarn feeder. A catching means for catching the yarn end of the yarn supplying body and a yarn end of the other yarn supplying body; and a knotter for joining both yarn ends caught by the catching means, the catching means comprising: A transfer tail forming device in which the action portion of the catching means is arranged so as to be located on or near the movement locus of the yarn end of the yarn supplying body when the yarn supplying body is supplied to the yarn supplying stand. ..