JP2000170052A - Selvedge forming device for loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject device with reduced number of required members by synchronously rotating the body of revolution for supplying selvedge yarns and that for opening the yarns only in one direction. SOLUTION: This device includes a gear 21 for opening selvedge yarns and another gear 24 for supplying selvedge yarns, which are set on supporting axes 19 and 22, respectively, rotationally supported by side plates 14 and 15. These gears 21 and 24 are fit into each other, and the former is also fit into a driving gear 12. A guide body 25 for opening selvedge yarns is set on the end of the supporting axis 19 rotationally supported by the side plates 14 and 15, and a guide body 26 for supplying selvedge yarns is set on the end of the supporting axis 22. Yarn guide holes 261 and 262 are formed on each end of the guide body 26, provided with bobbins 27 and 28. A common passage 191, through which selvedge yarns T1 and T2 are passed, is formed on the supporting axis 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ear thread supplying rotating body for holding an ear thread supplying bobbin and an ear thread opening rotating body for forming an ear thread opening, each of which is synchronously rotated only in one direction. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ear forming device in a loom that opens and closes a warp thread.

[0002]

2. Description of the Related Art In a buckling ear forming apparatus disclosed in Japanese Patent Application Laid-Open No. 3-97944, a pair of relay gears and a pair of planetary gears are provided on a side surface of a supporting gear having a rotation center on the same axis as a fixed sun gear. It is rotatably supported. The relay gear meshes with both the sun gear and the planetary gear. When the relay gear meshes with the sun gear and makes a half circumference around the sun gear due to the rotation of the support gear, the planetary gear makes one rotation on the support gear in the opposite direction. A bobbin holder is mounted on the shaft of the planetary gear that revolves around the sun gear, and the ear thread of the bobbin ear supported by the bobbin holder is pulled out of the bobbin by the thread tension. The ear forming apparatus using the planetary gear mechanism has the disadvantage that the number of parts increases and the structure becomes complicated.

An ear forming apparatus that does not use a planetary gear mechanism is disclosed in Japanese Patent Application Laid-Open No. Sho 56-53234. A pair of guide holes are formed in the ear thread opening rotary disc at peripheral portions separated from each other in the same diameter line direction from the rotation center of the ear thread opening rotary disc, and a pair of ears passed through both guide holes. The yarn performs opening and closing movements by the rotation of the ear thread opening rotating disk. The pair of ear yarns is supplied from a pair of bobbins mounted on a rotary disk for holding an ear yarn supply bobbin. A pair of guide holes are formed in the ear thread supply bobbin holding rotary disc at peripheral portions separated from each other in the same diameter line direction from the rotation center of the ear thread supply bobbin holding rotary disc. The ear thread fed from both bobbins is passed through a pair of guide holes on the side of the rotating disk for holding the ear thread supplying bobbin, and then through a pair of guide holes on the side of the rotating disk for opening the ear thread. The rotation center line of the rotating disk for holding the ear thread supply bobbin and the rotation center line of the rotating disk for opening the ear thread are parallel to each other, and both rotating disks rotate in the same direction. When only the ear thread opening rotary disc is rotated, a pair of ear threads is twisted between the ear thread supply bobbin holding rotary disc and the ear thread opening rotary disc. Therefore, the occurrence of the twist is prevented by rotating the rotating disk for holding the ear thread supply bobbin in the same direction as the rotating disk for opening the ear thread.

[0004]

Problems to be Solved by the Invention JP-A-56-5323
In the device disclosed in Japanese Patent Publication No. 4 (1994), ear disks intersect at the side surface of the turntable, so that the turntable cannot be supported with the center axis. Therefore, a configuration is employed in which a plurality of rotating rollers are brought into contact with the peripheral surface of the rotating plate to support the rotating plate with the plurality of rotating rollers. However, with such a support configuration,
The number of components cannot be reduced even when compared with an ear forming device using a planetary gear mechanism.

The present invention relates to an ear forming apparatus for synchronously rotating a rotating body for supplying an ear thread and a rotating body for opening an ear thread only in one direction, such as the apparatus disclosed in Japanese Patent Application Laid-Open No. 56-53234. The purpose is to reduce.

[0006]

SUMMARY OF THE INVENTION To this end, the present invention provides an ear thread supply bobbin having a pair of thread guide holes provided to hold an ear thread supply bobbin and to be away from the center axis of rotation in directions opposite to each other. An ear having a rotating body and a pair of thread guide holes provided so as to be separated from each other in a direction opposite to the rotation center axis through which the ear thread supplied from the pair of thread guide holes of the ear thread supply rotating body is inserted. The present invention is directed to an ear forming device that synchronously rotates a rotating body for a yarn opening in only one direction, and in one aspect of the present invention, the ear thread from one of a pair of thread guide holes on the rotating body for supplying an ear thread. A first thread path reaching one of the pair of thread guide holes on the opening rotating body side, and a first thread path from the other of the pair of thread guide holes on the ear thread supplying rotating body side to the ear thread opening rotating body side; Of the other thread guide hole An ear forming device having a second thread path, wherein the ear thread opening rotating body is disposed on a rotation shaft of the ear thread opening rotating body so as to penetrate the ear thread opening rotating body. First and second yarn paths were provided.

The first and second thread paths are provided on the rotation center axis of the ear thread opening rotating body so as to penetrate the ear thread opening rotating body. It can be supported on the rotation center axis. Such a support configuration is effective in reducing the number of components of the ear forming device.

[0008] In the invention of claim 2, in claim 1,
The ear thread supply rotating body has a support shaft on its rotation center axis, and the pair of thread guide holes is provided on the side of the ear thread supply rotating body on which the bobbin is held.

Such a support structure is effective in reducing the number of parts of the ear forming apparatus. According to a third aspect of the present invention, in any one of the first and second aspects, the rotation center axis of the ear thread supply rotating body and the rotation center axis of the ear thread opening rotating body are parallel to each other, A pair of thread guide holes of the rotating body for supplying the ear thread and the rotating body for opening the ear thread are arranged on both sides of a side plate that supports the spindle of the rotating body for supplying the ear thread and the rotating body for opening the ear thread. The ear thread supply rotating body and the ear thread opening rotating body are configured to rotate in mutually opposite directions.

[0010] The structure in which the rotating body for opening the ear thread and the rotating body for supplying the ear thread are rotated in opposite directions includes a circling region of the thread guide hole on the rotating body for opening the ear thread, and the yarn on the rotating body side for supplying the ear thread. The circling region of the guide hole can be distributed to both sides in the direction of the rotation center axis of the ear thread opening rotating body with the support shaft interposed therebetween. Such sorting facilitates replacement of the ear thread supply bobbin.

According to a fourth aspect of the present invention, in the third aspect,
The rotating body for supplying the ear thread and the rotating body for opening the ear thread include a gear portion of the same shape and the same size meshing with each other, and a guide body fixed to an end of a support shaft and integrally rotating with the gear portion. And each was provided.

The rotating force of one of the rotating body for supplying the ear thread and the rotating body for opening the ear thread is transmitted to the other via both gear portions, and the two rotating bodies rotate in directions opposite to each other. The configuration in which the rotational force of one of the rotating body for supplying the ear thread and the rotating body for opening the ear thread is transmitted to the other via both gear portions simplifies the mechanism.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a drive shaft 11 is rotatably supported on a side frame (not shown) of the loom, and a drive gear 12 is fixed to the drive shaft 11. The drive shaft 11 obtains a driving force from a loom driving motor (not shown). The drive shaft 11 rotates in the direction of arrow R1 shown in FIG.

As shown in FIG. 3, a support frame 13 is fixed to the side frame. The support frame 13 includes a pair of side plates 14, 15, a plurality of isolation blocks 16 interposed between the side plates 14, 15, a bolt 17 penetrating the side plates 14, 15 and the isolation block 16, and a screw 17. And a nut 18 attached thereto. The side plates 14, 15 are pressed against the isolation block 16 by the tightening action of the bolt 17 and the nut 18, and the isolation block 16 is
15 at predetermined intervals.

A cylindrical support shaft 19 is rotatably supported on both side plates 14 and 15 via a radial belling 20. An ear thread opening gear 21 is mounted on the support shaft 19 between both side plates 14 and 15. It is fixed. A support shaft 22 is rotatably supported on both side plates 14 and 15 via a radial belling 23, and an ear thread supply gear 24 is fixed to the support shaft 22 between both side plates 14 and 15. The ear thread opening gear 21 and the ear thread supply gear 24 have the same shape and the same size. As shown in FIG. 5, the two gears 21 and 24 mesh with each other,
The ear thread opening gear 21 meshes with the drive gear 12. With the rotation of the drive shaft 11, the ear thread opening gear 21 rotates in the direction of arrow R2 shown in FIG.
In the direction of arrow R3 shown in FIG.

The inner side of the side plate 15 (in FIG.
On the left side of the support shaft 19, an ear thread opening guide 25 is fixed to the end of the support shaft 19. Thread guide holes 251 and 252 are formed at both ends of the ear thread opening guide body 25.
The thread guide holes 251 and 252 are located at equal distances in opposite directions from the rotation center axis L2 of the ear thread opening gear 21. The ear thread opening guide body 25 is the ear thread opening gear 2.
1 and rotate together. Ear thread opening gear 21, support shaft 19
The ear thread opening guide 25 constitutes an ear thread opening rotating body.

As shown in FIG. 2, the guide member 2 for opening the ear thread
5 are formed with gougs 253 and 254. The presence of the hollow portions 253 and 254 makes the ear thread opening guide body 25 asymmetrical with respect to a plane passing through the rotation center axis L2 and the thread guide holes 251 and 252. Guide body 25 for ear thread opening
Has a rotationally symmetric shape that coincides with every rotation of 180 ° about the rotation center axis L2.

Outside the side plate 14 (in FIG. 3, the side plate 14
(Right side of FIG. 2), an ear thread supply guide 26 is fixed to the end of the support shaft 22. Thread guide holes 261 and 262 are formed at both ends of the ear thread supply guide body 26.
The yarn guide holes 261 and 262 are located at equal distances from the rotation center axis L3 of the ear thread supply gear 24 in opposite directions. The ear thread supply guide body 26 is the ear thread supply gear 2.
4 and rotate together. Ear thread supply gear 24, spindle 22
The ear thread supply guide 26 constitutes an ear thread supply rotating body.

As shown in FIG. 1, the guide member 2 for supplying ear thread
6 are formed with gouges 263 and 264. The existence of the hollow portions 263 and 264 makes the ear thread supply guide body 26 asymmetric with respect to a plane passing through the rotation center axis L3 and the thread guide holes 261 and 262. Ear thread supply guide body 26
Has a rotationally symmetric shape that coincides with every rotation of 180 ° about the rotation center axis L3.

A pair of bobbins 27 and 28 for supplying ear thread are mounted on the ear thread supplying guide body 26. Bobbin 2
The ear yarns T1 and T2 drawn out from the yarns 7 and 28 are passed through the yarn guide holes 291 and 301 of the tension applying devices 29 and 30 to be tensioned. Ear thread T1 passed through thread guide hole 291
Is passed through the thread guide hole 261 from the back side of the ear thread supply guide body 26 to the front side. The ear thread T2 passed through the thread guide hole 301 is passed through the thread guide hole 262 from the back side of the ear thread supply guide body 26 to the front side. Yarn guide holes 291, 30
The yarn path from 1 to the yarn guide holes 261 and 262 is the shortest path.

The ear threads T1 and T2 passed through the thread guide holes 261 and 262, respectively,
Through the cylinder. The inside of the cylinder of the support shaft 19 has two ears T1, T2.
Is a common path 191. The ear thread T1 passed through the common path 191 is passed through the thread guide hole 251 from the back side of the ear thread opening guide body 25 to the front side along the inside of the side plate 15. The ear thread T2 passed through the common path 191 is
Is passed through the thread guide hole 252 from the back side to the front side of the ear thread opening guide body 25 along the inside of the thread guide hole 252. Common route 19
The yarn path from 1 to the yarn guide holes 251 and 252 is the shortest path.

As shown in FIG. 1, a guide body 2 for supplying ear thread
The first thread path of the ear thread T1 from the thread guide hole 261 to the thread guide hole 251 on the side of the ear thread opening guide 25 has a portion between the thread guide hole 251 and the weave front W1. It displaces over the range E1 with the rotation of the guide body 25. The second thread path of the ear thread T2 from the thread guide hole 262 on the side of the ear thread supply guide body 26 to the thread guide hole 252 on the side of the ear thread opening guide body 25 includes a thread guide hole 251 and a weave front W1.
Is displaced over the range E1 with the rotation of the ear thread opening guide body 25. That is, the yarn guide hole 25
The ear yarns T1 and T2 passed through the first and the second
The opening / closing motion is performed between 51 and 252 and the cloth fell W1 of the woven fabric W with the rotation of the ear thread opening gear 21.

As shown in FIG. 4, the side plate 14 is provided with a thread guide 31 for absorbing a path difference. The path difference absorbing thread guide 31 has a mountain shape, and the path difference absorbing thread guide 31
Is a circular arc. Path difference absorbing yarn guide 3
The highest position measured from the first side plate 14 is the highest position of the ear thread supply guide body 26 (that is, the ear thread supply guide body 26).
Thread guide holes 261 and 262). As shown in FIG. 1, a yarn guide hole 261 on the side of the ear thread supply guide body 26 is provided.
In the first thread path of the ear thread T1 from the thread guide hole 251 on the side of the ear thread opening guide body 25, a portion between the thread guide hole 261 and the common path 191 rotates the ear thread supply guide body 26. Along with the range E2. The second thread path of the ear thread T2 from the thread guide hole 262 on the side of the ear thread supply guide body 26 to the thread guide hole 252 on the side of the ear thread opening guide body 25 is formed by the thread guide hole 262 and the common path 191. The portion between them is displaced over the range E2 with the rotation of the ear thread supply guide body 26. The path difference absorbing thread guide 31 is disposed between the support shaft 19 and the ear thread supply guide body 26 over the displacement range E2 of the thread path of the ear threads T1 and T2 accompanying the rotation of the ear thread supply guide body 26. ing.

FIGS. 6A and 6E show the maximum opening state, and FIG. 6C shows the closing state. FIGS. 6B and 6D
Indicates an intermediate state between the maximum open state and the closed state. In the first embodiment, the following effects can be obtained. (1-1) The first thread path and the second thread path are the rotation center axes of the ear thread opening rotating body including the ear thread opening gear 21, the support shaft 19, and the ear thread opening guide body 25. The thread guide holes 251 and 252 are diverted from the common path 191 passing through L2.
Leads to. Therefore, the first yarn path and the second yarn path intersect with the rotation center axis L2 only on the front side of the ear thread opening guide 25 with the rotation of the ear thread opening guide 25,
The first yarn path and the second yarn path do not intersect with the rotation center axis L2 on the back side of the ear thread opening guide body 25. That is, the configuration in which the common path 191 is provided on the rotation center axis L2 so as to penetrate the ear thread opening rotating body allows the ear thread opening rotating body to be supported on the rotation center axis L2.
Such a support configuration is effective in reducing the number of components of the ear forming device. (1-2) The support shaft 19 is optimal as a position where the common path 191 is formed. (1-3) The first yarn path and the second yarn path merge from the yarn guide holes 261 and 262 on the side of the ear thread supply guide 26 to the common path 191. Accordingly, the first yarn path and the second yarn path intersect with the rotation center axis L3 only on the front side of the ear thread supply guide 26 as the ear thread supply guide 26 rotates, and The second yarn path and the second yarn path do not intersect with the rotation center axis L3 on the back side of the ear thread supply guide body 26. That is, the configuration in which the common path 191 is provided on the rotation center axis L2 so as to penetrate the rotation body for opening the ear thread enables the rotation body for supplying ear thread to be supported on the rotation center axis L3. Such a support configuration is effective in reducing the number of components of the ear forming device. (1-4) In the case where the rotating body for opening the ear thread and the rotating body for supplying the ear thread having the common path 191 are rotated in opposite directions, the guide body 25 for opening the ear thread and the guiding body for supplying the ear thread. 26
Must be distributed to both sides of the support frame 13.
That is, the thread guide holes 251 and 252 on the side of the rotating body for opening the ear thread.
And the yarn guide hole 26 on the side of the rotating body for supplying the ear thread.
The circulating regions 1 and 262 must be distributed to both sides in the direction of the rotation center axis L2 on the side of the ear thread opening rotating body with the common path 191 interposed therebetween. This is to eliminate the twist of the ear threads T1 and T2 between the common path 191 and the ear thread supply guide 26. Therefore, the ear thread opening guide body 2
5 faces the inside of the side frame, and the ear thread supply guide 26 faces the outside of the side frame. Such distribution facilitates replacement of the ear thread supply bobbins 27 and 28 mounted on the ear thread supply guide body 26. (1-5) Rotational force of the ear thread opening rotating body is transmitted to the ear thread supplying rotating body via the ear thread opening gear 21 serving as a gear section and the ear thread supplying gear 24 serving as a gear section. The rotating bodies rotate in opposite directions. The configuration for directly transmitting the rotation of the ear thread opening rotating body to the ear thread supplying rotating body results in simplification of the mechanism, and the number of components of the ear forming apparatus can be reduced. (1-6) The tension applying devices 29, 30 serve as starting guides that first regulate the yarn paths of the ear yarns T1, T2 drawn from the bobbins 27, 28. The yarn guide holes 291 and 301 of the tension applying devices 29 and 30 serve as initial yarn guide portions that first regulate the yarn paths of the ear yarns T1 and T2 drawn from the bobbins 27 and 28. The path of the ear thread T1, T2 pulled out from the bobbins 27, 28 mounted on the front side of the ear thread supply guide body 26 passes through the thread guide holes 261, 262 from the back side of the ear thread supply guide body 26, and the ear thread. It is necessary to go to the front side of the supply guide body 26. The presence of the hollow portions 263 and 264 minimizes the yarn path from the yarn guide holes 291 and 301 to the yarn guide holes 261 and 262. Assuming that there are no recesses 263 and 264, the thread guide holes 291 and 301
The yarn path reaching 1,262 does not become the shortest path, and path fluctuation is likely to occur. Such path fluctuations tend to cause tension fluctuations. From the yarn guide holes 291 and 301 to the yarn guide holes 26
The configuration in which the shortest path is set to the yarn path reaching 1,262 is effective in preventing path fluctuation. (1-7) The path of the ear thread T1 and T2 diverted from the common path 191 passes through the thread guide holes 251 and 252 from the back side of the ear thread opening guide body 25 to the front side of the ear thread opening guide body 25. There is a need. The existence of the hollow portions 253 and 254 minimizes the yarn path from the common path 191 to the yarn guide holes 251 and 252. If the hollow portions 253 and 254 are not provided, the yarn path from the common path 191 to the yarn guide holes 251 and 252 does not become the shortest path, and path fluctuation is likely to occur. Such path fluctuations tend to cause tension fluctuations. Common route 19
A configuration in which the yarn path from No. 1 to the yarn guide holes 251 and 252 is the shortest path is effective in preventing path fluctuation. (1-8) A large path difference between the first yarn path and the second yarn path easily causes a change in tension, and the change in tension hinders good ear formation. The maximum opening angle θ of the ear yarns T1, T2 shown in FIG. 1 is 27 °, and the yarn guide holes 251, 252, 26
When the orbital radii of 1,262 are 70 mm and the distance from the common path 191 to the cloth fell W1 is 300 mm, the maximum path of the yarn path in the present embodiment is about 605 mm, and the minimum path is about 580 mm. This path difference is (605 mm-58
0 mm) / 605 mm ≒ 4.13%. JP-A-56-5
In the apparatus disclosed in Japanese Patent No. 3234, the maximum path of the yarn path is 464 mm and the minimum path is 43 mm under the same conditions as those of the present embodiment.
It is about 3 mm. This path difference is (464 mm-433 m
m) / 464 mm ≒ 6.8%. Such a difference in the path difference is due to the presence or absence of the common path 191.
Contributes to reducing the path difference between each ear thread T1 and T2. (1-9) The yarn guide hole 26 when the ear yarns T1 and T2 are closed.
The ear threads T1 and T2 between the first and second paths 262 and the common path 191 pass through the left and right centers of the curved portion 311 of the path difference absorbing thread guide 31, and the contact between the ear thread supply guide body 26 and the ear threads T1 and T2. Is avoided. When the ear yarns T1 and T2 are at the maximum opening, the ear yarn T between the yarn guide holes 261 and 262 and the common path 191 is opened.
1 and T2 pass through the left and right ends of the curved portion 311 of the path difference absorbing yarn guide 31, but the ear yarn supply guide body 26 and the ear yarn T
1, contact with T2 is avoided. That is, the yarn guide 31 for absorbing the path difference is composed of the ear thread supply guide body 26 and the ear threads T1, T2.
Prevents contact with

In the maximum opening state shown in FIG.
The path of the ear yarns T1 and T2 from 1,262 to the weave front W1 is the longest, and in the closed state of FIG.
The path of the ear yarns T1 and T2 from 62 to the cloth fell W1 is minimized. In the closed state, the bending between the yarn guide holes 261 and 262 and the common path 191 is larger than that in the maximum open state due to the presence of the path difference absorbing yarn guide 31. That is, the path difference absorbing yarn guide 31 contributes to reducing the path difference between the ear yarns T1 and T2.

Next, a second embodiment shown in FIG. 7 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the end of the support shaft 19 on the side plate 14 side is above the uppermost position of the ear thread supply guide body 26 measured from the side plate 14, and the ear thread supply guide body 26 and the ear thread T1 are measured. , T2.

Next, a third embodiment shown in FIG. 8 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the introduction port 192 at the end of the support shaft 19 on the side plate 14 side has a substantially elliptical shape. At the maximum opening, the major axis direction of the introduction port 192 is the ear thread opening guide body 2.
5 is directed to the support shaft 22 side, and at the time of the minimum opening, the short axis direction of the introduction port 192 is directed to the support shaft 22 side of the ear thread opening guide body 25. Such a shape of the introduction port 192 contributes to reducing the difference in the path between the ear threads T1 and T2.

Next, a fourth embodiment shown in FIGS. 9 and 10 will be described. The same components as those in the first embodiment are denoted by the same reference numerals. In this embodiment, the drive gear 12 meshes with the ear thread supply gear 24, and the ear thread opening gear 2
1 is arranged on the front side of the ear thread supply gear 24. Such an arrangement is effective in increasing the maximum opening angle θ of the ear threads T1 and T2. Increasing the maximum opening angle θ facilitates weft insertion.

In the present invention, the following embodiments are also possible. (1) The ear thread opening gear 21 is rotatable relative to the support shaft 19, and the ear thread supply gear 24 is rotatable relative to the support shaft 22. (2) The ear thread opening gear 21 and the ear thread supply gear 24 are bevel gears, and the rotation center axis L2 of the ear thread opening guide body 25.
And the rotation center axis L3 of the ear thread supply guide body 26 should intersect. (3) Transmission of one rotation of the ear thread supply rotating body and the ear thread opening rotating body to the other via an endless belt or an endless chain. (4) In the above item (3), the rotation center axis of the ear thread supply rotating body and the rotation center axis of the ear thread opening rotating body are parallel to each other, and both the rotating bodies are rotated in the same direction. A pair of thread guide holes of the supply rotating body and a pair of thread guide holes of the ear thread opening rotating body are arranged on the same side surface of both the rotating bodies.

The inventions other than the claims that can be grasped from the above embodiment will be described below together with their effects. (1) In any one of claims 1 to 4,
The ear thread supply rotator includes an ear thread supply rotator having a pair of thread guide holes on the ear thread supply rotator side, and the ear thread supply rotator is the ear thread supply rotator. The ear thread supply guide body has an asymmetric shape with respect to a plane passing through the rotation center axis of the ear thread supply rotation body and a pair of thread guide holes on the ear thread supply rotation body side. A starting guide body is provided on the ear thread supply guide body, and a starting yarn guide section is provided on the starting yarn guide body, and each of the first yarn guide section and the pair of thread guide holes on the side of the ear thread supply rotating body is provided. An ear forming device in a loom with the shortest yarn path.

The shape of such an ear thread supply guide body is as follows.
It facilitates threading through the thread guide hole. (2) In any one of claims 1 to 4,
The ear thread opening rotating body includes a pair of thread guiding holes having a pair of thread guide holes on the side of the ear thread rotating body, and the ear thread opening guide body is the ear thread supplying rotating body. The ear guide opening thread guide body is asymmetric with respect to a plane passing through the rotation center axis of the ear thread supply rotating body and a pair of thread guide holes on the ear thread opening rotary body side. The ear forming device in a loom, wherein each yarn path from the common path to the pair of yarn guide holes is the shortest path.

The shape of such an ear thread opening guide body is as follows.
It facilitates threading through the thread guide hole. (3) The ear forming device in a loom in which the path difference absorbing yarn guide for absorbing the path difference is disposed over the displacement range of the yarn path between the ear thread supplying guide and the common path in the item (1). .

The common path on the rotation center axis of the rotating body for opening the ear thread contributes to reducing the path difference between the ear threads, but the path difference absorbing thread guide also reduces the path difference between the ear threads. Contribute to

[0035]

As described above in detail, according to the present invention, the first and the second shafts are provided on the shaft disposed on the rotation center axis of the ear thread opening rotating body so as to penetrate the ear thread opening rotating body. Since the two yarn paths are provided, an excellent effect of reducing the number of components in the ear forming apparatus for synchronously rotating the rotating body for supplying the ear thread and the rotating body for opening the ear thread can be reduced.

[Brief description of the drawings]

FIG. 1 is a partially broken outer side view showing a first embodiment.

FIG. 2 is a partially broken inner side view showing a closed state.

FIG. 3 is a rear view showing a closed state.

FIG. 4 is a bottom view showing a maximum opening state.

FIG. 5 is a partially omitted perspective view.

FIG. 6A is a schematic side view showing a maximum opening state.
(B) is a schematic side view showing an intermediate state between a maximum open state and a closed state. (C) is a schematic side view showing the closed state. (D)
FIG. 4 is a schematic side view showing an intermediate state between a maximum open state and a closed state. (E) is a schematic side view showing the maximum open state.

FIG. 7 is a rear view showing the second embodiment.

FIG. 8 is an outer side view showing the third embodiment.

FIG. 9 is an outer side view showing a fourth embodiment.

FIG. 10 is an inner side view.

[Explanation of symbols]

Reference numeral 19: a support shaft constituting an ear thread opening rotating body; 191, a common path; 21 ... an ear thread opening gear serving as a gear portion on the ear thread opening rotating body side; Axis 2
Reference numeral 4 denotes an ear thread supply gear serving as a gear portion on the ear thread supply rotating body side; 25 an ear thread opening guide body constituting the ear thread opening rotary body; 251, 252 a thread guide on the ear thread opening rotary body side. Holes, 26: guide members for ear thread supply constituting a rotary body for ear thread supply, 261, 262: thread guide holes on the rotary body side for ear thread supply, 27, 28: bobbins, 29, 30: starting guide bodies Tension applying device, 291,301: yarn guide hole serving as initial yarn guide portion, 31: yarn guide for absorbing path difference, T1, T
2 ... ear thread, L2, L3 ... rotation center axis.

Claims (4)

[Claims] 1. An ear thread supply rotating body having a pair of thread guide holes provided to hold an ear thread supply bobbin and to be separated from each other in a direction opposite to a rotation center axis; And a rotating body for opening an ear thread having a pair of thread guide holes provided so as to be separated from each other in a direction opposite to the rotation center axis through which the ear thread supplied from the pair of thread guide holes of the body is inserted. An ear forming device that rotates only one of the pair of thread guide holes on the side of the ear thread supplying rotator to one of the pair of thread guide holes on the side of the ear thread opening rotator. A thread path, and a second thread path extending from the other of the pair of thread guide holes on the side of the ear thread supply rotator to the other of the pair of thread guide holes on the side of the ear thread opening rotator, The first and second yarn paths are Selvedge device in a loom provided in the support shaft which is disposed on the rotation center axis of the selvage shedding rotary member so as to pass through the shed rotating body. 2. The ear thread supply rotating body includes a support shaft on a rotation center axis thereof, and the pair of thread guide holes are provided on a side of the ear thread supply rotating body on which a bobbin is held. The ear forming device in a loom according to claim 1, wherein 3. The rotation center axis of the ear thread supply rotating body and the rotation center axis of the ear thread opening rotation body are parallel to each other, and the rotation of the ear thread supply rotation body and the ear thread opening rotation body is performed. A pair of thread guide holes are disposed on both sides of a side plate that supports a spindle of the ear thread supply rotating body and the ear thread opening rotating body,
3. The rotating body according to claim 1, wherein the rotating body for supplying the ear thread and the rotating body for opening the ear thread are rotated in directions opposite to each other.
Item 8. An ear forming device in a loom according to Item 5. 4. The rotary body for supplying ear thread and the rotary body for opening ear thread are fixed to an end of a support shaft and a gear part of the same shape and meshing with each other, and are integrated with the gear part. The ear forming device in the loom according to claim 3, further comprising a guide member that rotates.