JPS61101374A - Bobbin - Google Patents

Abstract

PURPOSE:To stabilize the feed of weft and improve productivity by dividing a bobbin on which the variation of fraying tension is little and the difference of dimension between the inner and outer layers is small into two parts and obtaining the structure where the divided bodies can be assembled. CONSTITUTION:The captioned apparatus is constituted of sub-bobbins 1A and 1A', and four concaved parts 4 are formed at an interval of 90 deg. onto the edge surfaces of the collar parts 3A and 3A', and the convex parts are formed onto the edge surfaces of the collar parts 3B and 3B', and then fitted. Therefore, the time for taking-up operation can be reduced half, and productivity can be improved. Further, the sub-bobbins 1A and 1A' are arranged in parallel, and when the tail of thread is connected and supplied as the weft for a weaving machine, the variation of tension in fraying can be reduced half, maintaining the equal supply amount to the conventional, and the reduction of the stop of operation and the improvement of the quality of woven fabric are permitted. Further, when the variation of the fraying tension is within the range allowable in the overleap of the weft of the weaving machine, at least three sub-bobbins can be used, and the amount of supply of the weft can be increased, and productivity can be improved.

Description

[Detailed Description of the Invention] [Object of the Invention] The invention is to respond to faster speeds, wider widths, etc. of innovative looms such as air jet looms and water jet looms for bobbins for winding yarn bodies. The present invention relates to a weft supply side bobbin.

Recently, the diameter of the winding body of bobbins has been increasing, and various bobbins having a winding capacity of about 3q to 1089 synthetic yarns are being used.

However, it must be easy to handle and work in the winding process, etc.

In other words, it is undesirable that the burden on the worker is not high in terms of weight and dimensions, and that as the size increases, the diameter of the balloon increases when it is unrolled, and the space for hanging it on the loom increases too much. For some reason, there is no need to increase the size of the bobbin; 1ull
There is no such thing as progressing to 'a'.

However, if we pay attention to the stable supply of yarn to a power loom, especially the unwinding tension, it is clear that yarn feeding using a larger bobbin is superior.

Incidentally, as the size of the bobbin increases, there is also the problem of increased winding time. Intuitively, it seems that this problem can be solved by increasing the yarn speed during V winding, but there is an upper limit due to the physical properties of the yarn, and this problem has not necessarily been solved at present.

In view of the above points, it is an object of the invention to provide a bobbin that can provide a more stable weft supply and contribute to improved productivity.

[Development of invention]

In the present invention, we focused on the fact that the unwinding tension of the bobbin shown in Fig. 1 (C) has extremely little fluctuation, and the difference between the inner and outer layers is small, and we took a bobbin of approximately this size and divided it into two in the axial direction, and then disassembled it. In order to shorten the winding time by creating a structure that can be combined, and to hang it on a loom, the two disassembled gearbins should be placed side by side (tail-connected) to reduce the winding time and traverse. This makes it possible to reduce tension fluctuations between the two to half of the conventional level.

〔Example〕

An example of non-invention is given below as r n (L) [b) z
I will explain using

In the same figure (1), the bobbin (1) shows the combined state, and is divided by two sub-bobbins ('A) (/A/).

(2) is the winding trunk, (JA) (JA') (JB
I (JB') is the collar and % (JA) (J
There are l places on the end face of A'l, O'r = 4 parts with 1 interval (4)
is provided and 1 not shown <3B) C3
It fits into the convex part on the end face of B).

Normally, a winder that winds this type of bobbin has a horizontal shaft and a hole in the center of the bobbin (
5) is often used for centering and clamping with a holder (not shown) for winding.

Therefore, during the rotation, the bobbin (1) rotates in the direction shown by the arrow (6), and the supply system (7) is wound up.

For example, if the bobbin according to the non-embodiment is equivalent to that of the conventional bobbin shown in the first factor (C1), it is clear that the time required for winding is halved and the productivity is doubled.

Strictly speaking, the amount of winding is reduced by the width of the flange (J Al (j Bl), but this amount is insignificant and does not affect the essence of non-invention.

The rolled bobbin (1) is a sub-bobbin (/A)
What is the solution to disassembling (/he'), placing them side by side, joining the tails, and supplying them as weft yarns for woven keels, while maintaining the same amount of supply as before, while changing the length force during unwinding? This has the great advantage of being able to reduce it by half.

In addition, if the unwinding tension fluctuation is within an allowable range for the weft flight of the loom, for example, it is possible to stack (/Al
It is also possible to have more than one.

Namely 1. It also becomes possible to increase the supply area for yarn.

This reduces the frequency of stoppage of the loom, reduces defects such as warpage due to stoppage, and directly leads to improvement in the quality of the woven fabric.

In addition, in the non-implemented example, in order to combine the sub-bobbins, unevenness was provided on the end face of the flange part, and an example was shown in which they were fitted together. The rotation method may be, for example, magnetic coupling or coupling using frictional force, and the number of divisions is not limited to two.

〔Effect of the invention〕

According to the above-mentioned invention, for example, by dividing the yarn into two, the winding time is halved, which improves productivity, and the weft feeding time of the machine is reduced by half the unwinding tension fluctuation. ,
It is possible to reduce the stalling rate and improve the quality of the woven fabric. Moreover, within the allowable range of zero unwinding tension fluctuation, the amount of pick-up can be increased in small steps from 75 times to 2 times the conventional amount.

Furthermore, since it can be disassembled into sub-bobbins, it is expected that it will be easier for women to work on.

Therefore, a more stable weft supply is possible, and it is possible to provide a weft that is effective in terms of volume and handling staff.

[Brief explanation of the drawing]

Fig. 7 is a diagram of fluctuations in unwinding tension when a conventional bobbin of the 71st work I is used as a weft weft material. Figure 2 is an example of an uninvented bobbin. The code (1) is the uninvented bobbin (/Al (/A') is the sub-bobbin (JA) (jA'l (JB) (JB) is the collar part (4)
The concave part (6) provided on the end face of the flange (V) is the direction of bobbin rotation (7).Supply System Patent Applicant: Chuetsu Kikai Co., Ltd. - Ichishita]
” □ Figure 1 Figure 2 /...Bobbin 7k of the present invention, /I...Sub bobbin 3A13A', 3B13B'...Bibe group...Concave part O...Bobbin rotation direction 7...Supply system

Claims (1)

[Claims] In the double-flange bobbin on which the filament is wound, the winding body is divided into several sections in the axial direction, and a collar is formed at each division point, and a concave-convex fitting part is formed on the side end surface of the collar. A bobbin characterized in that the bobbin is provided with a flange, thereby allowing both flange-type sub-bobbins to form a proportionate body in the lateral direction of the flange, and also enabling integral rotation when combined.