JPS6014868B2 - Weft storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum-type weft storage device for a mumura loom, and more particularly to a twill storage device equipped with a manual operation device.

As a conventional drum-type weft storage device, there is one in which a drum is held stationary and a striped yarn is wound around the drum and stored using a yarn guide that rotates around the drum.

This will be explained with reference to FIGS. 1 and 2. 1 is the frame of the loom, 2 is an air injection nozzle for silk holder held in a nozzle holder 3 installed upright on the frame 1, and 4 is a A guide 6 attached to a stay 5 fixed to the nozzle holder 3
is a bracket having a bearing portion 6a fixed to the frame 1 with bolts 7, and the axis of the bearing portion 6a is aligned with the axis of the guide 4.

A rotary shaft 9 is rotatably supported on the bearing portion 6a via a ball bearing 8, and a toothed pulley 10 fixed to the rear end of the rotary shaft 9 and a loom drive pulley (not shown) are connected to the bearing portion 6a via a ball bearing 8. A toothed belt 11 is wound between the looms so that the rotating shaft 9 is rotated, for example, four times per revolution of the loom. A drum support 13 is supported on a small diameter portion 9a at the front end of the rotating shaft 9 via a ball bearing 12 so as to be relatively rotatable, and a drum 15 is fixed to this support 13 with bolts 14. On the circumferential surface of the drum 15, from the rear end side toward the front end side, a tapered part 15a whose outer diameter gradually decreases, and a straight part 15b which is connected to the smallest tapered part and have approximately the same diameter are formed. Here, the diameter of the straight part 15b is set so that the length of the weft W wound around the straight part 15b about four times becomes the striped length per one time. Further, a weight 16 is provided in a part of the drum 15 and is fastened together with a bolt 14, and the drum 15 is held stationary with this weight 16 located at the lowest position. In addition, a thread guiding hole 17 is formed at the axis of the rotating shaft 9 and opens at the rear end surface, and a pull-out hole 18 is formed on the circumferential surface of the rotating shaft 9. And the lotus is suitable.

A rod-shaped thread guide 19 is fixed to the circumferential surface slightly forward of the pull-out hole 18, and the tip thereof is bent obliquely and faces the tapered part 15a of the drum 15. A hole 20 is provided. Here, the striped yarn W pulled out from the yarn supplying body (not shown) is attached to the bracket 6.
After the striped yarn is pulled through the air injection nozzle 22 attached to the stay 21 fixed to the
and the pull-out hole 18, and then the striped yarn insertion hole 201 of the yarn guide 19, and then wrapped around the tapered part 15a and the straight part 15b of the drum 15, and the first and second
At least one of the locking bars 23 and 24 is locked, and the guide 4 is passed through the guide 4, and then the nozzle 2 is passed through the guide 4.

The first and second locking bars 23 and 24 are rotatably attached to the fixed shaft 25, and their tips are bored near the boundary between the tapered part 15a and the straight part 15b of the drum 15 and in the straight part 15b. They are opposed to provided holes (not shown) and are rotated at appropriate times so that their tips enter or exit the holes of the drum 15.

Thus, during operation of the loom, the rotating shaft 9 is rotated four times per revolution of the loom, while the drum 15 is rotated by the weight 1 attached to it.
6 holds it stationary. Therefore, as the rotating shaft 9 rotates, the yarn guide 19 rotates around the drum 15, and the entire yarn W is wound around the 7-part portion 15a of the drum 15. The twill yarn W wound around the tapered portion 15a of the drum 15 slides down the tapered portion 15a due to its own tension and moves to the straight portion 15b while pushing away the previous yarn. If the starting point is just before the striping, the first and second locking bars 23 and 24 have entered the holes in the drum 15 at this time.

In this state, the striped yarn W is divided into sections by the first locking bar 23, wound four times around the straight portion 15b of the drum 15, and then locked by the second locking bar 24. When the second locking bar 24 exits from the hole in the drum 15 from this state, the lock on the overall yarn W is released, and the twill yarn W is streaked by the air injection from the nozzle 2 that starts immediately before this. be done.

When the winding amount of the straight portion 15b of the drum 15 becomes 0 due to this twill insertion, the twill yarn W is locked to the first locking bar 23 and the twill insertion is completed, and the yarn guide is also provided during this weft insertion. 19 rotates, so that the tapered portion 15 is closer to the first locking bar 23.
The striped yarn W continues to be wound on the a side. Then, at the end of the punching process, the weft W is wound around twice on the tapered part 15a side, but at this time, first the second locking bar 24 enters the hole of the drum 15 again, and then the first locking bar 24 enters the hole of the drum 15 again. The bar 23 exits through the hole in the drum 15. As a result, until now the first locking bar 2
The weft yarn W, which had been locked to the second locking bar 24, slides down the tapered portion 15a and lies on the straight portion 15b, and is locked to the second locking bar 24. When the weft W is wound nearly four times around the straight portion 15b, the first stopper bar 23 is attached to the weft portion that is being wound around the tapered portion 15a and the twill portion that is being wound around the straight portion 15b. rush in between and separate them. Immediately after this, striping is performed as described above. However, in such a conventional striped yarn storage device, when winding the striped yarn W around the drum 15 by manual operation, the yarn guide 19 is rotated by holding it by hand. 19 is the rotation axis 9
When it came to the bottom of the machine, it was difficult to hold it in your hand and rotate it, making the work tedious.

The present invention has been made by paying attention to these conventional problems, and solves the above problems by attaching a handle wheel for manual operation to the rotating shaft of the thread guide.

The present invention will be explained below based on illustrated embodiments.

In the following embodiments, the same parts as those in the conventional example are given the same reference numerals, and the explanation thereof will be omitted, and only the different parts will be explained. FIGS. 3 and 4 show an embodiment of the present invention.

A handle wheel 30 having a through hole (not shown) in the center is fixed to the center portion 9b on the front end side of the rotating shaft 9 with screws 31. This handle wheel has a three-way disk shape, and its outer edge is bent all the way around, giving it a dish-like shape. Then, a bracket 32 is attached to the front side surface of this handle wheel 30, and this bracket 32
A thread guide 33 having a striped thread insertion hole 33a is fixed to and is opposed to the tapered portion 15a of the drum 15. A notch 34 is provided in a part of the outer edge of the handle wheel 30, specifically, in the part that is the path for the silk thread W from the pull-out hole 18 of the rotating shaft 9 to the silk thread insertion hole 33a of the thread guide 33.
is provided to prevent the striped thread W from coming into contact with the handle wheel. In this configuration, when winding the weft W around the drum 15 by manual operation, the thread guide 33 can be rotated by holding the handle wheel 30 by hand and rotating it, making the operation extremely simple.

FIG. 5 shows another embodiment.

In this embodiment, the handle wheel 4 has a rotating shaft 9.
However, its outer edge is bent forward over the entire station to cover a part of the tapered part 15a of the drum 5.

A striped yarn insertion hole 41 is formed in the bent portion of the outer edge of the handle wheel 40, and the striped yarn W pulled out from the pull-out hole 18 of the rotating shaft 9 is passed through the weft insertion hole 41 to form the drum 15.
The handle wheel 40 performs the function of guiding the thread. With this configuration, the rotating part does not have a protrusion unlike the conventional thread guide, so even if the rotating part is accidentally touched, there is no risk of injury, which is preferable from a safety standpoint. It is also possible to reduce the number of parts. Further, in this embodiment, a plurality of striped thread insertion holes 41 are formed by shifting them in the circumferential direction, and one of them is selected for operation.

By doing so, there is an advantage that the phase of the thread guide section can be adjusted very easily. As explained above, according to the present invention, a handle wheel for manual operation is attached to the rotating shaft of the thread guide, so it is possible to extremely easily perform operations such as winding the twill thread around the drum by manual operation. This effect can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a conventional drum-type striped yarn storage device, FIG. 2 is a sectional view of the roller in FIG. FIG. 4 is an enlarged front view of the same part as above, and FIG. 5 is a front view of the main part showing another embodiment.

W... Striped thread, 9... Rotating shaft, 15... Drum, 3
0,40...handle wheel, 33 single thread guide, 33a,
41...Striped thread insertion hole.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. A shuttleless loom in which the drum is held stationary, and a rotating shaft is attached around the drum to rotate the weft thread insertion hole of the thread guide so that the weft thread is wound around the drum and stored. A weft storage device characterized in that a handle wheel for manual operation is attached to a rotating shaft. 2. The weft storage device according to claim 1, wherein the handle wheel has a weft insertion hole formed in a part thereof and also serves as a yarn guide.