JPS5926544A - Twist tab weaving apparatus of loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a twist selvage forming device for a loom.

As a conventional twisted selvage weaving device, one using a planetary mechanism is well known. To explain this, a pair of planetary gears are provided at approximately symmetrical positions on a rotary plate driven by a loom, and a selvage bobbin holder that holds a selvage yarn bobbin as a selvage yarn supply device is attached to these planetary gears. It is being These planetary gears mesh with the fixed sun gear via relay gears to form a planetary mechanism, and rotate while revolving around the sun gear as the rotating plate rotates.

Therefore, the selvage thread bobbin holder also rotates while revolving around its axis, and the selvage thread is drawn out from the selvage thread bobbin rotatably attached to the selvage thread bobbin holder through the selvage thread guide provided at an eccentric position of the planetary gear. Twisted together at the selvedge part,
This creates a twisted selvage. In addition, such a device is disclosed in Japanese Patent Publication No. 38-2835 and Japanese Patent Publication No. 42-18586.
It is disclosed in the publication No.

However, in such a conventional twisted selvage weaving device, the selvage bobbin was integrally attached to a planetary gear that rotated while revolving, which limited the size of the selvage bobbin and made it difficult to wind it around the selvage bobbin. Since the amount of selvage thread that could be wound was also limited, the selvage thread bobbin had to be replaced frequently and the operating rate of the loom was poor.

Moreover, when the selvedge thread bobbin is attached like this.

It was also difficult to take measures against wind floss on the selvage bobbin.

The present invention has been made by focusing on these conventional problems, and aims to reduce the size and weight of the planetary mechanism by using an internal gear that is a fixed sun gear, and is designed to be separated from the planetary mechanism.
A selvage yarn supply device comprising a pair of selvage yarn bobbins that rotate in synchronization with a rotary plate, and selvage yarn guide holes are formed near the axis of the rotary plate and near the axis of the pair of planetary gears, respectively, The selvage thread is supplied from the selvage thread guide holes of the pair of selvage threads pulled out from the selvage thread feeding device to the selvage thread guide holes of the respective planetary gears to the selvage thread guides at eccentric positions of the planetary gears. The problem has been resolved.

Hereinafter, the present invention will be explained based on illustrated embodiments.

1 to 4 show one embodiment of the present invention.

The outline of the twisted selvage weaving device of this embodiment will be explained based on FIG. 1. A selvage yarn supplying device 1 and a planetary machine's2, which will be described later, are separately provided on the side of the woven fabric. After the pair of selvage threads 3 pulled out from the selvage thread supplying device 1 are pulled through the rotating plate 4 of the planetary mechanism 2, they are pulled through a pair of planetary gears 5a and 5b attached to the side surface of the rotating plate 4. It is passed through and guided to the selvedge part 6 of the woven fabric. Here, the selvage thread supply device 1
and the rotary plate 4 of the planetary mechanism 2 rotate in the same direction once for every two revolutions of the loom so that the pair of selvedge threads 3 between them will not be disturbed. Note that 7 is a weft inserted by a weft insertion injection nozzle (not shown).

A pair of planetary gears 5a mesh with an internally toothed fixed sun gear 9 via relay gears 8a and 8b'.

5b is rotated on its own axis while revolving with the rotation of the rotary plate 400, a pair of selvage threads 3 are twisted together in the selvage assembly part 6 of the woven fabric, and the ends of the weft threads 1 are fixed.

At this time, when the selvage threads 3 are twisted together in the selvage assembly section 6 and the tension of the selvage threads 3 increases, the selvage thread supplying device 1 also pulls out the selvage threads 3 and the tension tzr of the selvage threads 3 is relaxed.

Here, the planetary gears 5a and 5b are set so as to rotate twice for every rotation of 8+4.

Next, each part of this twisted selvage weaving device will be explained in detail based on FIGS. 2 to 4.

2 and 3 show the planetary mechanism 2. FIG.

The rotating plate 4 has a shaft portion 4a rotatably supported by a bearing (not shown), and a gear 4b that meshes with a drive gear of a loom (not shown) is formed on the shaft portion 4a. Also 1
A pair of shafts 10a, 10 installed on one side of the rotating plate 4
b, a pair of relay gears 8a meshing with the fixed sun gear 9;
, 8b are rotatably attached via bearings 11, respectively. In addition, an selvage thread guide hole 4c is formed in the shaft portion 4a of the one-rotation plate 4, and two holes 4d that open near the other side of the rotation plate 4 are formed following this guide hole 4c. ing.

A pair of brackets 12 are provided on the one side surface of the rotating plate 4.
are fixed thereto, and a pair of planetary gears 5a and 5b are rotatably mounted on these brackets 12 via bearings 13 and mesh with the pair of relay gears 8a and 8b, respectively.

The shafts of these planetary gears 5a and 5b have selvedge thread guide holes 1.
4°C is formed. In addition, a pair of planetary gears 5a, 5
A U-shaped selvage thread guide 16 having a selvage thread guide hole 15 at the tip is fixed to the side surface of b, and a linear elastic member 18 that shoulders the guide hole 17 is fixed to the free end side. . Note that 19 is a balance that adjusts the tension of the selvage thread by gripping the selvage thread 3 with an appropriate force.

FIG. 4 shows the selvage yarn supplying device 1. To a holding member 20 fixed to a frame of a loom (not shown).

A cylindrical rotating body 22 is rotatably attached via a bearing 21. A gear 2 is attached to one end of this rotating body 22.
2a is formed, and this wheel 22a is set to mesh with a drive gear of a loom (not shown) and rotate once for every two rotations of the loom. Further, the rotating body 22 is formed with a selvage thread guide hole 22b passing through both end faces thereof, and has selvage thread guides 23a and 23b on one end face at the distal end and the base end, respectively. L-shaped selvage thread guide plate 24
is fixed. In the hollow part of this rotary plate 22.

A hollow pipe 26 is rotatably attached to the I/F via two ball bearings 25a and 25b, and a selvage thread supply section 27 is attached to this hollow pipe 26. Note that 28 is a spacer provided between the pair of ball bearings 25a and 25b.

To explain the selvage thread supply section 27, a disc-shaped selvage bobbin holder 30 is fixed to the central part of the hollow nob 26 via a mounting member 29, and a pair of long poles are attached to the selvage thread bobbin holder 30. )31a.

31b are arranged in parallel to the hollow pipe 26 at substantially symmetrical positions. Furthermore, selvage thread bobbins 32a and 32b are rotatably attached to the long poles 31a and 31b, respectively. Here, by bringing the protruding end surface of the attachment member 2 into contact with the inner ring of the ball bearing 25a, the rotary body 22 and the selvage thread supply section 27 are set to be able to freely rotate relative to each other.

A guide plate 33 is attached to a mounting member 34 on the end surface of the hollow pipe 26.
The guide plate 33 has a central part (L35) which communicates with the hollow part of the hollow pipe 26, and has selvedge thread guide holes 36a, 36 at both edges, respectively.
b is formed. Further, on the upper surface of the guide plate 33, there are a pair of lancers 37a, 37 that grip each selvage thread 3 with an appropriate force.
b, and a pair of elastic bodies 39a, 39b that absorb the path difference of the selvage thread 3 and prevent tension fluctuations by passing the selvage thread 3 through the guide holes 38a, 38b at the free ends. Here, the selvage yarn supply section 27 is covered by a transparent cover 40 for preventing fluff.

Then, the selvage thread 3 pulled out from one selvage thread bobbin 32b
is inserted into the guide hole 36b of the guide plate 33 and the balance wheel 37b is inserted into the guide hole 36b of the guide plate 33.
After being gripped by the elastic body 39b, the thread is passed through the guide hole 38b of the elastic body 39b, and then guided to the selvedge thread guide hole 4C of the planetary mechanism 2 through the hollow part of the hollow pipe 26. Moreover, the selvage thread 3 pulled out from the other selvage thread bobbin 32a is attached to the guide plate 3.
After the tensor 37aK is pulled through the guide hole 36a of No. 3 and gripped, it is pulled through the guide hole 38a of the elastic body 39a, and then the pair of selvage thread guide holes 23a, 23 of the selvage thread guide plate 24 is pulled through the guide hole 38a of the elastic body 39a.
b, and is guided from the hole 22b of the rotating body 22 to the selvage thread guide hole 4C of the planetary mechanism 2.

The pair of selvage threads 3 guided by the planetary mechanism 2 are connected to a rotating plate 4.
After being threaded through the selvage thread guide hole 4C, the thread is threaded through a pair of holes 4d formed at the tip of the JL4C, and branches into two routes at these holes 4d. The branched selvage threads 3 are held by the balance wheel 19 in the same manner, and then connected to a pair of planetary gears 5a.
, 5b, and into the guide hole 17 of the elastic body 1B, and from there, the selvage thread guide 15 leads to the selvage set part 6 of the woven fabric.

Then, the rotary plate 4 is rotated by the loom, and the pair of planetary gears 5a, Sb & planetary gears are rotated to twist the selvedge threads 3 in the selvedge part 6 of the woven fabric.

Also, the tension of the selvedge thread 3 increases, and this tension is transferred to the planetary mechanism 2.
and the balance 19, 37a of the selvage thread supply device 1.

When the holding pressure of 37b is overcome, the selvage thread bobbins 32a and 32b
The selvage thread 3 is pulled out from.

In this case, the fixed sun gear 9 is an internal gear.
With this, the planetary mechanism 2 can be made smaller, the lid can be made lighter, and the loom can be made to have four speeds. Furthermore, since the planetary mechanism 2 and the selvage supply device 1 are provided separately, the amount of selvage wound on the selvage bobbin can be increased, so the number of times the selvage bobbin is replaced can be reduced, thereby improving the operating rate of the loom. Also.

One measure against air fluff in the selvage yarn supply section 27 can be taken by attaching a transparent cover 40.

FIGS. 5 and 6 show another embodiment of the present invention, in which an internal toothed fixed sun gear 9' of the planetary mechanism 2 is formed in a semicircular shape. Here, a pair of relay teeth, 48a, 8
A second relay gear 42 is rotatably attached to the side surface of the rotary plate 4 via a bearing 41 in order to rotate the pair of planetary gears 5a and 5b meshing with the planetary gears 5a and 5b by the constant rotation of the gear b. , this second relay gear 42 meshes with the pair of relay gears 8a and 8b. In this embodiment as well, the same effects as in the previous embodiment can be obtained.

As explained above, the present invention separates the planetary mechanism that supplies a pair of selvage threads to the selvedge part of the woven fabric and the selvage thread supply device that supplies the selvage threads to this mechanism, so that the selvage thread bobbin can be made larger. Therefore, the number of times the selvage bobbin is replaced can be reduced, and the operating rate of the loom can be improved. Also, it is easy to prevent the winding of the selvedge thread bobbin. Additionally, the planetary mechanism can be made smaller and lighter, making it possible to support higher speed looms.

[Brief explanation of drawings]

1 to 4 show one embodiment of the present invention, FIG. 1 is a schematic perspective view of a twisted selvage weaving device, FIG. 2 is a front view of the main part of the same planetary mechanism, and FIG. 1-1 sectional view of Figure 2, No. 4
The figure is a cross-sectional view of the selvage thread supplying device shown in FIG. 1, FIGS. 5 and 6 show other embodiments of the present invention, FIG. -Vl sectional view. 1... Ear thread supply device 2, 2'... Planetary mechanism
3... Ear thread 4... Rotating plate 5a, 5b.
...Planetary gear 6...Ear assembly part 8a, 81)
...Relay gear 9. y...Fixed sun gear 18.
...Selvage thread guide 19° 37a, 37b...Tensa 27...Selvage thread supply section 32a, 32b - Bobbin patent applicant Nissan Motor Co., Ltd. agent Patent attorney Fujio Sasashima Figure 5, Figure 6

Claims (1)

[Claims] Rotating plate (4), fixed sun gear (9) and single rotating plate (4)
A pair of planetary gears (5a) are rotatably attached to the fixed sun gear (9) and meshed with the fixed sun gear (9) to provide planetary motion.
. In the twisted selvedge weaving device of the loom that weaves,
The fixed sun gear (9) is an internal gear, and a pair of selvedge thread bobbins (32a, 32b) that are separated from the planetary mechanism (2) and rotate in synchronization with the rotating plate (4) are provided. The selvedge yarn supply device (1) is provided, and the rotary plate (4
) and near the axis of each of the planetary gears (5a, 5b), respectively, are formed with selvage thread guide holes (4c, 14), and a pair of selvage threads pulled out from the selvage thread supplying device (1) are formed. (3)
is supplied from the selvage thread guide hole (4d) of the rotating plate (4) to the selvage thread guide (16) via the selvage thread guide hole (14) of each of the planetary gears (5a, 5b). The loom features a twisted selvedge weaving device.