JP3522698B2 - Ear formation device in shuttleless loom - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ear loop forming device for a shuttleless loom, and in particular, weaves at least four selvage yarns with two ground selvage yarns and two selvage yarns. The present invention relates to an earlobe forming device.

[0002]

2. Description of the Related Art The applicant of the present application has previously disclosed in Japanese Examined Patent Publication No. 3-1414 / 1991 that, when weaving a convoluted ear, a vertical movement of a needle for inserting a ground selvage yarn and a yarn finger for inserting a convolution ear yarn, and a yarn finger. As a drive source for the left and right movement of the needle, without using a conventional cam, the eccentric bush converts the rotational movement into the reciprocating vertical movement, and the inclined rotation bush converts the rotational movement into the left and right movement. An earlobe formation device has been disclosed in which the earlobe is woven by performing a predetermined relative movement on.

According to this entwined ear forming device, the rotary motion is directly converted into vertical and horizontal motions without using a cam and a cam follower, so that it can be applied to a high-speed loom having a rotational speed of 350 rpm or more, and production. Made a great contribution to the improvement of sex.

[0004]

In recent years, in order to further improve productivity, there has been a demand for a higher loom rotation speed. Therefore, when the number of rotations of the loom is increased to 500 rpm or more, a problem occurs in the lateral movement of the yarn finger through which the confounding yarn is inserted, and the configuration of the convoluted ear forming device has a limited range of application.

That is, the loom rotational speed is 500 to 600 r
When the speed is increased to pm, overrun due to inertia occurs at the movement direction conversion point during the reciprocating motion of the yarn finger, and therefore a beautiful confounding loop cannot be woven depending on the weaving conditions such as the type of yarn and the fineness. The problem has emerged.

In view of the above-mentioned conventional problems, the present invention provides a confounding loom forming device for a shuttleless loom, which can form a beautiful contraption even when the loom rotation speed is increased, thereby improving productivity. The purpose is to provide.

[0007]

An apparatus for forming looped selvedges in a shuttleless loom according to the present invention divides selvage yarn into ground selvage yarn and selvage selvage yarn, and moves the selvage selvage yarn path left and right with respect to the ground selvage yarn. In addition, it is a convoluted loop forming device in a shuttleless loom that moves up and down up and down to weave a convoluted loop. A rotatably equipped finger lever and a change lever that controls the lateral movement of the yarn finger are supported on the machine frame so that they can be rotated up and down respectively, and each lever corresponds to the rotating shaft that is driven in synchronization with the loom body. In addition to providing an eccentric bush for rotating and driving each lever, the change lever and the yarn finger are connected by a connecting mechanism.
Even if the speed is increased, overrun due to inertia does not occur at the movement direction conversion point during the reciprocating motion of the yarn finger, and the stroke of the left and right motion of the yarn finger can be easily adjusted by adjusting the mounting phase of the eccentric bushing. You can always weave beautiful ear ears even when changes occur.

Further, the eccentric bushes corresponding to the respective needle levers and the finger levers are attached to the rotary shaft with their phases shifted so that the needle levers and the finger levers move vertically in opposite phases.
The eccentric bushes corresponding to the needle lever and the change lever are installed in the rotating shaft with almost the same phase but different phases, and the yarn finger and the change lever are connected via a link mechanism. Can perform predetermined vertical and horizontal movements, and stable operation can be obtained even at high speed.

Further, if the atrial selvage is woven with at least four selvage yarns consisting of at least two ground selvage yarns and at least two selvage yarns, at least four selvage yarns are strong and beautiful. A confounding ear can be formed.

In addition, the rotation speed of the loom is set to 1 /
When the speed is reduced to 2 and linked, it is not necessary to separately provide a drive means for the rotary shaft, and a stable operation can be ensured with a simple structure in synchronization with the loom body with high accuracy.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the entanglement forming device in a shuttleless loom of the present invention will be described below with reference to FIGS.

1 and 2, the machine frame 1 of the loom body
An L-shaped bracket 2 that supports the entire earlobe forming device is attached to the center of the rotary shaft 3 by the bracket 2. A pulley 4 is fixed to one end of the rotary shaft 3, and three eccentric bushes 5 (5) having an outer peripheral surface eccentric to the axis of the rotary shaft 3 are fixed to the other end.
a, 5b, 5c) are fixed. These three eccentric bushes 5 are fastened and fixed by bolts 3a so that the eccentric phase can be adjusted independently.

A needle lever 7, a finger lever 8 and a change lever 9 are supported by a first bearing stud 6 fixed to the bracket 2 so as to be vertically rotatable.

A crank arm 10 (10a, 10b, 10) is provided on the outer circumference of each eccentric bush 5 (5a, 5b, 5c).
The large diameter part at one end of c) is rotatably fitted through a bearing. Crank arm 10 (10a, 10b,
Second studs with bearings 11 (11a, 11b, 11c) are fixed to the small-diameter portions at the other end of 10c).
11b, 11c) are connected to the needle lever 7, the finger lever 8, and the change lever 9.

The needle lever 7 controls the up-and-down movement of the needle 14 through which the ground yarn is inserted. As shown in FIG. 3, the long lever 7b extends from the base portion 7a in one direction and the other direction. The short lever 7c is extended. The base portion 7a is rotatably supported by the first bearing stud 6. As shown in FIG. 4, a needle guide 13, a needle 14 and a yarn guide 15 are attached to the tip of the long lever 7b via a heald hook 12. The tip portion of the short lever 7c is rotatably fitted to the above-mentioned second bearing stud 11a.

The finger lever 8 controls the vertical movement of the yarn finger 18 through which the confounding thread is inserted.
As shown in FIG. 5, the long lever 8b extends from the base portion 8a in one direction and the short lever 8c extends in the other direction. The base 8a is the first bearing stud 6
It is rotatably supported by. As shown in FIGS. 6 and 7, a finger holder 16 is attached to the tip of the long lever 8b. The finger holder 16 has a pin 1
A bearing holder 18 is rotatably supported by a shaft 7. That is, the bearing holder 18 is U-shaped and is rotatably supported in the left-right direction by the pin 17 while sandwiching the finger holder 16 as shown by an arrow A in FIG. A yarn finger 20 is attached to the bearing holder 18 with a pair of bolts 19. The tip portion of the short lever 8c has the above-mentioned second bearing stud 1
It is rotatably fitted to 1b.

As shown in FIG. 6, the yarn fingers 18 are attached symmetrically with respect to the upper and lower sides of the guide holes 20a through which the loop yarn is inserted. It is configured to move left and right in a phase opposite to that of the yarn finger 20. The base of the finger arm 21 is fixed to the bearing holder 18.

The change lever 9 is a yarn finger 2
It controls the left and right movement of 0, and as shown in FIG.
A long lever 9b extends from the base 9a in one direction and a short lever 9c extends in the other direction. Base 9
The a is rotatably supported by the first bearing stud 6. As shown in FIGS. 6 and 7, one end of a pillow ball rod 22 having a pair of pillow balls 22a at both ends is connected to the tip of the long lever 9b, and the other end is connected to the finger arm 21. ing. The pillow ball rod 22 constitutes a link mechanism as an example of a connecting mechanism. The tip of the short lever 9c is rotatably fitted to the above-mentioned second bearing stud 11c.

In FIG. 1, reference numeral 23 denotes a shaft which is driven by the loom body through a transmission means (not shown) as appropriate, and 24
Is a pulley attached to the shaft 23, and 25 is a timing belt wound between the pulley 4 and the pulley 24. The pulley 4 is formed to have an outer diameter twice as large as that of the pulley 24, and the rotational speed of the shaft 23 is 1 It is configured to reduce the speed to / 2 and transmit it to the rotary shaft 3.

Next, the operating state in the above configuration will be described. 1 and 2, when the shaft 23 is driven and rotated by the loom main body drive section through an appropriate transmission means,
Pulley 24 fixed to shaft 23, timing belt 25
The pulley 4 is driven via. When the pulley 4 rotates, the rotating shaft 3 that fixes the pulley 4 rotates, but at this time, the rotation speed is reduced to half the rotation speed of the loom body and driven. When the rotary shaft 3 is driven, the eccentric bushes 5 (5a, 5b, 5c) fixed to the rotary shaft 3 rotate.

When the eccentric bush 5a is driven, the crank arm 10a fitted to the eccentric bush 5a is driven, and the second arm mounted on the crank arm 10a is driven.
The needle lever 7 is driven through the bearing-equipped stud 11a. The needle lever 7 pivotally moves about the first bearing stud 6 as a fulcrum. For this reason,
The needle 14 attached to the tip of the long lever 7b of the needle lever 7 moves vertically.

On the other hand, when the eccentric bush 5b is driven,
Crank arm 10 fitted to this eccentric bush 5b
b is driven, and the finger lever 8 is driven via the second bearing stud 11b attached to the crank arm 10b. The finger lever 8 is the first
The stud 6 with bearing is used as a fulcrum for pivotal movement.
Therefore, the yarn finger 20 attached to the tip of the long lever 8b of the finger lever 8 via the finger holder 16 and the bearing holder 18 moves vertically.

At this time, if the phases of the eccentricity amounts of the eccentric bush 5a and the eccentric bush 5b are appropriately selected and set so as to be shifted, the needle 14 and the yarn finger 20 move vertically in opposite phases. It will be. That is, needle 1
When the needle 4 moves downward, the yarn finger 20 moves upward, and when the needle 14 moves upward, the yarn finger 20 moves downward.

When the eccentric bush 5c is driven at the same time, the crank arm 10c fitted to the eccentric bush 5c is also driven, and the second bearing stud 11c attached to the crank arm 10c is used. Change lever 9 is driven. The change lever 9 pivotally moves about the first bearing stud 6 as a fulcrum. Therefore, the pillow ball rod 22 as a link mechanism attached to the tip of the long lever 9b of the change lever 9
Moves up and down.

At this time, the finger lever 8 and the change lever 9 move in the vertical direction substantially in synchronization with each other.
By causing a difference in motion between the finger lever 8 and the change lever 9, the pillow ball rod 22 relatively moves up and down as shown by an arrow B with the up and down motion of the tip of the change lever 9 in FIG. become,
The finger arm 21 rotates about the pin 17 as a fulcrum,
As a result, the yarn finger 20 having the guide hole 20a through which the confounding thread is inserted also has the pin 1 through the bearing holder 18.
As shown by arrow A, the robot moves in the left-right direction with 7 as a fulcrum.

Next, with reference to FIGS. 9 and 10, the forming motion of the concha is explained. 9 and 10 (a) show a state immediately before the needle 14 moves from the bottom dead center of the descending stroke to the ascending stroke. At this time, the yarn finger 20 reversely moves from the top dead center of the ascending stroke to the descending stroke. It is the state just before,
Here, for the two ground selvage yarns Y1 and Y2, the convoluted selvage yarn S1,
S2 opens at the upper mouth, where weft insertion for inserting the weft yarn X is performed.

Next, as shown by the arrow in FIG.
The confounding yarn S1 moves from the right side of the ground yarn Y2 and the confounding yarn S2 moves from the left side in mutually opposite directions in synchronization with the descending stroke of the yarn finger 20. As a result, the confounding thread S1 is
The lower side of the ground thread Y2 passes through the upper side of the ground thread Y1 and descends to the left side, and the confounding thread S2 passes through the lower side of the ground thread Y2 and the upper side of the ground thread Y1. Down to the right, and the bottom opening opens. At the same time, the ground selvage yarns Y1 and Y2 are also needles 14
Rises to open the upper opening, and the state shown in FIG. 10 (b) is reached, where weft insertion is performed.

Next, as shown by the arrow in FIG.
The confounding yarn S1 moves from the left side of the ground yarn Y1 and the confounding yarn S2 moves from the right side in opposite directions in synchronization with the rising stroke of the yarn finger 20. As a result, the confounding yarn S1 passes above the ground yarn Y1 and passes below the ground yarn Y2, and rises to the right. Further, the confounding yarn S2 passes through the upper side of the ground yarn Y1 and passes through the lower side of the ground yarn Y2 to the left side to become the upper mouth opening, and returns to the state of FIGS. 9 and 10 (a).

Thus, of the four selvage yarns, the two selvage yarns and the two selvage yarns are divided and opened, and the yarn paths of the two selvage yarns are set to the two selvage yarns. The left and right movements and the up and down movements are performed to form the concha Z.

[0030]

EFFECT OF THE INVENTION According to the entwined loop forming device in the shuttleless loom of the present invention, the needle lever having the needle for guiding the ground selvage yarn and the yarn finger for guiding the selvage yarn are rotated to the left and right. A movable finger lever and a change lever that controls the left and right movement of the yarn finger are supported on the machine frame so that they can be rotated up and down, and the levers are made to correspond to the rotating shafts that are driven in synchronization with the loom body. Equipped with an eccentric bush that rotates each lever, and the change lever and the yarn finger are connected by a connecting mechanism. Weaving conditions change because no run occurs and the stroke of the left and right movement of the yarn finger can be easily adjusted by adjusting the mounting phase of the eccentric bush. It can also weaving the always beautiful 絡耳 in.

[Brief description of drawings]

FIG. 1 is a front view showing a main configuration of an embodiment of an entangling device for a shuttleless loom of the present invention.

2 is a cross-sectional plan view of FIG.

FIG. 3 is a front view of a needle lever according to the same embodiment.

FIG. 4 is a view taken in the direction of arrow AA in FIG. 3 showing a mounted state of the needle in the same embodiment.

FIG. 5 is a front view of the finger lever according to the same embodiment.

FIG. 6 is a BB arrow view of FIG. 5 showing a mounted state of the yarn finger in the same embodiment.

FIG. 7 is a perspective view of a main part showing a connection configuration of a yarn finger and a change lever in the same embodiment.

FIG. 8 is a front view of a change lever according to the same embodiment.

FIG. 9 is a perspective view showing an operation of forming an ear loop in the embodiment.

FIG. 10 is an explanatory diagram of an operation of forming an ear loop in the same embodiment.

[Explanation of symbols]

1 machine frame 3 rotation axes 5 (5a, 5b, 5c) Eccentric bush 7 Needle lever 8 finger lever 9 Change lever 14 needles 20 yarn fingers 22 Pillow ball rod (link mechanism, connecting mechanism)

Claims (4)

(57) [Claims] 1. A shuttleless loom for weaving a selvage by dividing the selvage into a selvage selvage and a selvage selvage and moving the thread path of the selvage selvage with respect to the selvage selvage horizontally and vertically. An entangling device, which controls a lateral movement of a yarn finger, a needle lever having a needle for guiding a ground ear thread, a finger lever for rotatably moving a yarn finger for guiding the confounding thread left and right. An eccentric bush that rotatably drives the change lever and the changeable lever is supported on the machine frame so that the rotary shaft is driven in synchronization with the main body of the loom, and the eccentric bush is driven to rotate the lever in correspondence with each lever. An entangling device for a shuttleless loom, wherein a lever and a yarn finger are connected by a connecting mechanism. 2. An eccentric bush corresponding to each of the finger lever and the finger lever is attached to the rotary shaft with a phase shift so that the needle lever and the finger lever move up and down in opposite phases. Attach to the rotating shaft with the same phase but different phase,
2. The device for forming loops in a shuttleless loom according to claim 1, wherein the yarn finger and the change lever are connected via a link mechanism. 3. The non-woven fabric according to claim 1, wherein the entanglement is woven with at least four selvage yarns including at least two ground selvage yarns and at least two entanglement yarns. Entangle forming device for shuttle loom. 4. The entanglement forming device in a shuttleless loom according to claim 1, wherein the rotating shaft is linked to the main body of the loom at a reduced rotational speed of 1/2.