JPH0874145A - Spindle in false twister - Google Patents

Abstract

PURPOSE: To enable the common utilization of one spindle for catch cords having different thicknesses, improve the operating efficiency in changing a woven fabric and enhance the general-purpose properties of a false twister. CONSTITUTION: This spindle 1 in a false twister is obtained by further installing a threading hole 71 having a smaller diameter than that of plural threading holes 4 and 72 in at least one thereof and selecting and using the threading holes 71 and 72 according to the kind of catch cord threads in the false twister capable of threading the yarn end treating threads 9 through the plural threading holes 4 and 72 provided in the longitudinal direction of the spindle 1 side by side, rotating the spindle 1, thereby false twisting the yarn end treating threads 9 and holding an end of a weft yarn 15 with the yarn end treating threads 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a spindle used in a false twisting device of a shuttleless loom.

[0002]

2. Description of the Related Art A false twisting device rotates a spindle to
Twist-end treatment Thread, that is, the catch cord, is false-twisted, and the catch cord holds the end of the weft yarn to give uniform tension to the weft yarn and to prevent the weaving structure near the selvage from collapsing or loosening. ing.

In a conventional apparatus of this type, as shown, for example, in Japanese Utility Model Publication No. 57-18463, the spindle is provided with holes of the same diameter for one spindle. The diameter of the hole in the spindle is determined by the type of catch cord (for example, thread thickness, thread tension, etc.) or the number of catch cords. Generally, the diameter of the catch cord that matches the thickness of the weft thread is used. That is, two types of holes are used according to the catch cords for thick yarn and thin yarn. Therefore, the spindles for the thin thread and the thick thread are provided with only holes having the same diameter according to the thickness of the thread, and those spindles are selectively used according to the thickness of the thread. It will be.

In a conventional spindle, a plurality of catch cords are twisted and become thick during twisting operation, and a thick thread does not allow a thick thread to pass through. Further, in the case of thin yarn, it can be passed through the hole for thick yarn. However, since the diameter of the hole is too large relative to the thickness of the thread, the play becomes large. For this reason, the catch cord is swayed to the left and right as the spindle rotates, and a weft catch error occurs. Further, since the degree of bending of the catch cord is small, a sufficient twisting torque cannot be obtained, the twist is weakened, and the force for catching the weft thread is weakened. In order to avoid these disadvantages, the diameter of the spindle hole is determined according to the type of catch cord.

[0005]

[Problems of the Prior Art] The above-mentioned prior art has the following problems. First of all, it takes time to change the machine. That is, in the conventional spindle, since only one hole having the same diameter is provided for one spindle, the spindle is replaced according to the type of the catch cord.
In this replacement, the spindle together with the false twisting device is removed from the loom and replaced. In this case, the work of removing the false twisting device from the loom or reattaching it to the loom is extremely time-consuming and time-consuming. As a result, the machine replacement work itself takes time.

Secondly, the spindle is not versatile. That is, as described above, in the conventional one, only one hole having the same diameter is provided for one spindle. Therefore, one spindle can handle only one type of catch code. Therefore, in a weaving factory that handles multiple types of fabrics, it is necessary to prepare two types of spindles for thin yarns and thick yarns according to the number of looms according to each catch code, which is very expensive. I will follow you.

[0007]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to allow one spindle to be commonly used for catch cords having different thicknesses, to improve workability when changing fabrics, and to use a general-purpose false twisting device. It is to improve sex.

[0008]

According to the present invention, the yarn end treated yarn is inserted through a plurality of insertion holes arranged in parallel in the longitudinal direction of the spindle, and the spindle is rotated. In a false twisting device of a shuttleless loom, which false twists and holds an end portion of a weft yarn with a yarn end treatment yarn, at least one of the plurality of insertion holes is further provided with an insertion hole having a diameter smaller than the insertion hole. The insertion holes are selected and used according to the thread type of the catch cord. As a result, even if the yarn thickness of the catch cord changes, the spindle replacement work is not required and the versatility of the false twisting device is enhanced.

[0009]

EXAMPLE 1 This example is shown in FIGS. In these figures, the spindle 1 is composed of a tubular portion 2 and a flat portion 3 formed at the tip portion. The flat portion 3 is formed with, for example, two insertion holes 4 common to the thin yarn and the thick yarn so as to communicate with the front and back surfaces, and the inclination between the flat portion 3 and the tubular portion 2 Insertion hole 71 for thin yarn and insertion hole 7 for thick yarn, which communicate with inner hole 6 inside tubular portion 2 at portion 5.
2 in a state of facing each other. Common insertion hole 4 here
The thick thread insertion hole 72 is formed to have a diameter corresponding to the thick thread catch cord 9, and the thin thread insertion hole 71 is inserted so as to correspond to the thin thread catch cord 9. The holes 4 and 72 are formed to have a smaller diameter.

FIG. 11 shows a state in which the spindle 1 is mounted on the false twisting device 10. The false twisting device 10 is attached to the position of the woven edge of the fabric 13, and inputs the rotation on the side of the shuttleless loom by the belt 11 and the pulley 12 to give the spindle 1 rotation in the false twisting direction. On the other hand, for example, three catch cords 9 sandwich the weft yarns 15 inserted in the openings of the warp yarns 14 before the beating by the reeds 16 and capture the ends of the weft yarns 15 during the twisting process. . In this way, the catch cord 9 that has captured the end portion of the weft yarn 15 enters the inside of the yarn guide 17 while being twisted by the rotation of the spindle 1. In this process, the weft yarn 15 is cut from the woven edge of the woven fabric 13 by the thermal or scissor type cutter 18, so that the catch cord 9 together with the yarn guide 17, the insertion hole 4, the insertion hole 71 or the insertion hole of the spindle 1 is inserted. 72,
After passing through the inner hole 6, it finally becomes the ear 8 and is guided to a predetermined position.

As described above, first, the plurality of catch cords 9 are passed through the two insertion holes 4 provided in the flat portion 3, and then, depending on the thread thickness of the catch cords 9, It is passed through the insertion hole 71 or the insertion hole 72 which communicates with the hole 6, and is passed through the inside of the inner hole 6. At this time, the insertion hole 71 for the thin yarn or the insertion hole 72 for the thick yarn is selected according to the thickness of the waste ear 8, and the waste ear 8 is passed therethrough. In this way, abandoned ear 8
By passing it through, one spindle 1 can handle two types of catch cords 9 having different thicknesses. Further, since the insertion holes 71, 72 communicating with the inner hole 6 are adapted to the thickness of the thread, the catch cord is compared to the one having the hole diameter for all the thick threads and the thread being passed through. In the process of giving twist to 9, it is possible to suppress the deflection of the yarn.

[0012]

[Embodiment 2] This embodiment is a modification of the above-mentioned embodiment 1, and as shown in FIG. 4, an insertion hole 71 for a thin thread and an insertion hole 72 for a thick thread are both formed in the same inclined portion 5. This is an example. Therefore, no holes are formed in the other inclined portion 5. Also in this embodiment, the same effect as that of the first embodiment can be obtained.

[0013]

[Embodiment 3] In this embodiment, as shown in FIG. 5, the common insertion hole 4 is not formed in the flat portion 3, and two insertion holes 41 dedicated to thin yarns and two insertion holes 42 dedicated to thick yarns are provided. This is an example in which they are formed one by one along the axial direction. In this embodiment as well, the same effect as that of the first embodiment can be obtained, but since the hole diameters of the insertion holes 41 and 42 are provided respectively for the thin yarn and the thick yarn, the embodiment 1, As compared with the No. 2 yarn, the runout of the yarn is further suppressed.

[0014]

[Embodiment 4] In this embodiment, as shown in FIGS. 6, 7 and 8, the flat portion 3 is formed in the middle portion of the tubular portion 2 slightly toward the tip, so that the tip portion of the flat portion 3 has a tubular shape. A tubular portion 19 having the same shape as that of the portion 2 is formed, and an insertion hole 71 for a thin yarn and an insertion hole 72 for a thick yarn are formed in the inclined portions 5 at both ends of the flat portion 3, and as shown in FIG. As shown in FIG. 7, a common insertion hole 4 is formed in the central portion of the flat portion 3 for the thin yarn and the thick yarn, or as shown in FIG. This is an example in which the hole 41 or the insertion hole 42 for the thick thread is formed independently. In the case of this embodiment, since the waste ears 8 enter from the inside of the inner hole 20 of the tubular portion 19, the waste ears 8 enter from one side surface of the flat portion 3 when the spindle 1 rotates. Compared with the above, the run-out of the throw-away ear 8 can be suppressed to a small level, and in the process of passing through the inside of the inner hole 20, two shortly cut weft threads 15 are woven and are stiffened. The passage of the ears 8 becomes smooth.

[0015]

[Embodiment 5] In this embodiment, as shown in FIG. 9, instead of forming the flat portion 3 near the tip of the tubular portion 2,
This is an example in which the twisted portion 21 is formed and the throwing edge 8 is guided along the spiral surface of the twisted portion 21. Then, the twisted portion 21
Insertion holes 71 for thin threads and insertion holes 72 for thick threads are respectively formed at positions of both ends of the insertion holes 71, 72 communicating with the inner hole 6 and the inner hole 20 of the tubular portion 19 at the tip. The insertion holes 71, 72 communicating with the
It is provided in a positional relationship such that when the throw-away ear 8 pulled out from is guided along the twisted portion 21, it can pass through holes having the same diameter. Therefore, the throw-away ear 8 reaches the insertion holes 71, 72 for the thick thread or the thin thread from the inner hole 20 at the tip of the tubular portion 19, and spirally winds while contacting the outer peripheral surface of the twisted portion 21. Or through the thick thread insertion holes 71, 72 into the inner hole 6 of the tubular portion 2. In this embodiment as well, the same effect as the above-mentioned embodiment can be obtained, but especially since the throwing tab 8 moves while winding along the outer peripheral surface of the twisted portion 21,
Appropriate tension can be applied to the throwing ear 8 by the friction between the yarn and the surface.

[0016]

Sixth Embodiment In this embodiment, as shown in FIG. 10, instead of the twisted portion 21 of the above embodiment, that portion is replaced by a plate-like portion 22.
This is an example in which the thin-thread insertion holes 71 and the thick-thread insertion holes 72 are alternately formed in the conical inclined portions 5 at both ends of the plate-shaped portion 22. In this embodiment, the throwing ear 8 enters the insertion holes 71, 72 for the thin thread or the thick thread from the inner hole 20 of the tubular portion 19, and is wound spirally on the plate-shaped portion, and then the thin thread. Or through the thick thread insertion holes 71, 72 and into the inner hole 6 of the tubular portion 2. Also in this embodiment, the same operational effects as those of the above-mentioned fifth embodiment can be obtained. In particular, since the plate-shaped portion 22 can be configured by a member different from the tubular portion 2, it is easy to set the tension on the ear 8 by selecting the friction coefficient of the surface thereof.

[0017]

As described above, according to the present invention, in the spindle of the false twisting device, since the insertion holes having the hole diameters corresponding to the two types of catch cords are provided for one tubular portion, the same spindle can be used for thick yarn. Since it can also be used as a spindle for thick threads or as a spindle for thick yarn, it is possible to shorten the time for machine change work such as changing fabrics, improve workability, expand versatility of the spindle, and keep costs low. it can.

[Brief description of drawings]

FIG. 1 is a perspective view of a spindle according to a first exemplary embodiment.

FIG. 2 is a plan view of the spindle according to the first exemplary embodiment.

FIG. 3 is a sectional view of a spindle of the spindle 1.

FIG. 4 is an enlarged perspective view of a main part of a spindle according to a second exemplary embodiment.

FIG. 5 is an enlarged perspective view of a main part of a spindle according to a third exemplary embodiment.

FIG. 6 is a perspective view of a spindle according to a fourth exemplary embodiment.

FIG. 7 is a plan view of a spindle according to a fourth exemplary embodiment.

FIG. 8 is a plan view of a spindle according to another example of the fourth embodiment.

FIG. 9 is a perspective view of a spindle according to a fifth exemplary embodiment.

FIG. 10 is a perspective view of the spindle according to the sixth embodiment.

FIG. 11 is a plan view showing a state in which a spindle is incorporated in the false twisting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spindle 2 Cylindrical part 3 Flat part 4, 41, 42 Insertion hole 5 Sloping part 6 Inner hole 71, 72 Insertion hole 8 Disposal selvage 9 Catch cord (thread end processing thread) 10 False twisting device 19 Cylindrical part 20 Inner hole 21 twisted portion 22 plate-shaped portion

Claims (1)

[Claims] 1. A yarn end treated yarn is inserted through a plurality of insertion holes arranged in parallel in the longitudinal direction of a spindle, and the spindle is rotated to tentatively twist the yarn end treated yarn, and the end of the weft yarn is made to end. A false twisting device for a shuttleless loom that holds a treated yarn, wherein at least one of the plurality of insertion holes is further provided with an insertion hole having a diameter smaller than the insertion hole.