JPS5936075A - Grasping method for end of thread reeled in transfer tail - Google Patents

Abstract

PURPOSE:To perform reliable grasping of a thread end, by a method wherein, in a pneumatic spinning machine, a thread end formed at one end of a bobbin, is pressed several times along the outer periphery of the bobbin so that it can be drawn by a following thread reeled in transfer tail. CONSTITUTION:When a transfer reeling takes place, a thread 10 is first supported at points A and B in a manner that it crosses the end surface of a bobbin 11, and a thread end 12 is positioned along the outer periphery. After the thread 10 running from the point B is positioned along the outer periphery of the bobbin 11 to form a bow-shaped engaging stop part 13, the thread 10 is reeled several times in a manner to press the withdrawable thread end 12 and the engaging stop part 13 to form a transfer tail reeling 14. Thereafter, a thread element 15, is reeled around approximately the whole range of the bobbin 11 except the tail reeling 14 range to form a main reel 16. This prevents unreeling of the transfer tail during storage and transportation, and facilitates unreeling of the transfer tail through drawing of a thread end taking out part 17.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for gripping one transfer end and one tail winding yarn end.

BACKGROUND OF THE INVENTION In general, even in air spinning machines such as open-end spinning machines, doffing and doffing operations have been automated in order to improve work efficiency. In this case, the doffing machine doffs the bobbin on which a predetermined amount of thread has been wound, and the doffing machine instead serves to attach the bobbin with a seed yarn wound around the seed yarn to be used for work to the bobbin holder. It is supposed to be done.

As shown in Figures 1 and 2, this bobbin 1 with seed thread winding has a date on it, in addition to the seed thread 2 used for the work, in order to facilitate the handling of the pan after winding in the subsequent process. In other words, in order to tie the end of the thread of one package to the start of the thread of another package to enable continuous work, some machines are equipped with a Nidra transfer tail winding 4 at the end of the bobbin 3.

However, in the conventional bobbin 1 with the seed thread winding f'', this transfer tail winding 4 is 7 of the bobbin 3! A! It is formed by simply wrapping a thread around the area. As shown in Fig. 1, the thread end 5 is often exposed outside the bobbin 3, and the thread end 5 is attached to other bobbin windings during storage, transportation, etc.
There were disadvantages in that the yarn end 5 of the -1 bobbin 1 got tangled, or the transfer tail winding 4 unraveled one after another from the yarn end 5, causing problems in subsequent processes. To improve this inconvenience, there is a method in which the yarn end 5 is fixed with a transfersol winding 4, as shown in FIG. However, with this seed bobbin winding [size bobbin 1, the length of l.
There was an inconvenience in that it could easily unravel even if a slight force was applied to the portion connected to the transfer tail winding 4.

Purpose This invention was made in order to eliminate the above-mentioned defects in the conventional transfer tail winding.The purpose of the present invention is to ensure that the end of the transfer tail winding yarn is properly rolled, and also that the transfer tail winding is carried out from the yarn end as necessary. It is an object of the present invention to provide a method for holding a transfer tail winding end by which a tail winding part can be unwound.

EXAMPLE An example embodying the present invention will be described below with reference to FIGS. 3 to 8D. When performing transfer tail winding according to the present invention, first, as shown in FIG. along the outer peripheral surface toward the other end of 11.

The distance between the two points A and B may be any length that allows the yarn end 12 to be pulled out. From this state, as shown in FIG. 4, the thread 10 connected from the support point B is aligned in an arch shape along the outer peripheral surface of the bobbin 11 to form a locking part 13, and then the thread end 12 and Thread 10 so as to press the locking part 13 from above.
Load the bobbin with 11 VC windings. As shown in FIG.
After forming the bobbin 11, the seed yarn 15 is wound over almost the entire width of the bobbin 11. Note that the thread end 12 and the locking part 13 are
As shown in the figure, the main body winding 160 is located outside the f-1 area. In addition, as shown in FIG. 8, the angle α formed by the locking part 13 on the side connected to the yarn end 12 and the transfer tail winding 14 where the winding part 1 is wound on the yarn end 12 and the locking part 13.
is 40-60°.

The transfer tail winding 14 that has been placed on the bobbin 11 in this way has the thread end 12 held down by the transfer tail winding 14, so that the thread end 12 can be easily attached to the thread end of another bobbin during storage, transportation, etc. There is no need to get involved. In addition, since the yarn end 12 and the locking part 13 are pressed several times in the transfer tail winding 14Vc, l following -th, a slight force is applied to the yarn end pull-out part 17 that continues from the yarn end 12 to the locking part 13. The transfer tail winding 14 will not unravel even to a certain extent (for example, due to friction with the bobbin gripping device). In this case, the angle α between the locking part 13 on the side connected to the yarn end pull-out part 17 and the parallel part of the transfer tail winding 14 is 90°.
The closer it is, the harder it is to unravel. However, when necessary, the yarn end 12 can be pulled out from the transfer tail winding section 14 by pulling the yarn end pull-out section 17, and the transfer tail winding 14 can be easily unwound from the yarn end 12 side. It will not interfere with the work of

Note that this invention is not limited to the above embodiments,
For example, instead of forming the locking part 13 in a bow shape, as shown in FIG. The winding is performed by forming the yarn end 12 and the locking part 13 into a transfer tail winding 1.
It is also possible to arbitrarily change the shape, structure, etc. of each part without departing from the spirit of the present invention, such as holding it down with the bobbin 111 (straight cheese bobbin).

Effects As detailed above, this invention has a winding fτ at one end of the bobbin.
) The thread end of the transfer tail winding formed by the thread and the part separated by a length that allows at least the thread end to be pulled out from the thread end are aligned along the outer peripheral surface of the bobbin toward the other end of the bobbin, and both are aligned. Since the end of the transfer tail winding thread is held by pressing it several times with the thread of the subsequent transfer tail winding, the end of the l-transfer tail winding thread can be securely gripped, and if necessary, the transfer tail winding part can also be used as a trap. It has a great effect.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of a conventional bobbin with a seed thread winding, and Figures 3-
Figure 6 shows the winding section j of the transfer tail winding according to the present invention.
FIG. 7 is a perspective view of a seed bobbin [J type bobbin] having a transfer tail winding according to the present invention, FIG. 8 is a partial front view of the same, and FIG. FIG. 3 is a partial front view showing the tail winding portion. Bobbin 11, thread end 12, locking part 13, transfer tail winding 14, seed thread 15, thread end pull-out part 17゜Patent applicant: Toyota Industries Corporation, Kozu Seisakusho Co., Ltd. Representative Patent attorney: On 1) Hiroshi On Figure 3 Figure 5

Claims (1)

[Claims] 1. Wrap the yarn end of the transfer arch formed on one end of the bobbin and the part separated from the yarn end by at least a length that allows the yarn end to be pulled out from the bobbin so that the yarn end is directed toward the curved end of the bobbin. A method of grasping the end of a transfer tail winding yarn, which is characterized in that the ends of the transfer tail winding yarn are held along the outer circumferential surface and both are pressed several times with the yarn of the subsequent transfer tail winding.