JPS63196742A - Tab forming method and apparatus in three-dimensional 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 Purpose of the Invention (Field of Industrial Application) This invention is a three-dimensional #A fabric that weaves a fabric three-dimensionally using three-component threads: a warp 2, a first weft X, and a second weft y. The present invention relates to a method for forming an ear in a machine and an apparatus therefor.

(Prior art) Three-dimensional fabrics (three-dimensional fabrics) can be used as shock absorbers and filters in their woven form, and fiber-reinforced composites with resin or inorganic materials as matrices are also used in aircraft, automobiles,
It is expected to have a wide range of uses as a structural material for bridges, rockets, etc., and as a soundproofing material. The basic weaving method for three-dimensional textiles is to stretch a large number of warps 2 in multiple rows and columns to form a warp group, and insert a first weft between each row of the warp group in a state perpendicular to the warp 1. Weave the warp 2 and the first weft X between each row of the warp group.
21st in a state perpendicular to both! The process of weaving thread y is repeated. Also in this three-dimensional fabric, it is necessary to form selvedges in order to prevent the warp yarns 2 from fraying from the tips of both wefts x and {circle around (2)}.

Conventionally, as shown in FIG. 10, Japanese Patent Publication No. 54-38673 discloses that the tip of the first weft X inserted perpendicularly to the warp 2 between each row of the warp group is folded back to form a loop. , the selvage thread insertion needle 61 with the selvage thread P inserted into the needle hole 61a is inserted so as to pass through each loop of the first weft 8. A selvage forming method in which the selvage thread P at the tip of the selvage thread insertion needle 61 is hooked by the penetrating reorganization bellows needle 62 and passed through the previously formed selvage thread loop L, thereby preventing the selvage thread from fraying. is disclosed.

(Problems to be Solved by the Invention) However, in the conventional selvage forming method, after the next selvage thread is inserted into the tip loop L of the previously formed selvage thread, the selvage thread is pulled back and the loop L is tightened. is very difficult.

That is, in order to tighten the loop L, it is necessary to pull the selvage yarn P tightened by a large number of first wefts X against the force of tightening the 111th yarn X;
As shown in Figure 0, no force can be applied directly to the selvage thread portion that requires tensile force. Therefore, the loop of the selvage yarn P needs to be formed small from the beginning.

When forming the loop L to be small, it is necessary to form the reorganization bellows needle 62 that is inserted through the loop L to be small, and as a result, the selvage yarn is folded back at a small radius and is squeezed by the rearrangement bellows needle 62.

Carbon 11$1 and glass 4 useful as threads for three-dimensional textiles
1 miscellaneous yarn is susceptible to folding friction at the small radius, and yarn breakage is likely to occur in the conventional selvage forming method. Also, conventional H1t
In this case, the selvage thread is always used as the selvage thread insertion tool 6.
1, the selvage thread is constantly squeezed and is easily damaged.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, in this invention, a large number of warp threads 2 are stretched in multiple rows and rows, and between each row or each column of a warp group, With the first weft
The selvage threads are inserted into the end loops of the weft yarns x and y, and the selvage threads connected to the corners of the three-dimensional fabric are locked, and then the selvage threads are inserted into the end loops of the wefts x and y in a folded manner by pulling back the selvage thread locking device. , Then, while holding the selvage thread loop with the selvage thread locking device, the tip loops of the wefts x and y are pulled back to the end of the warp group, and the selvage thread is pulled back to the end of the warp thread group by the frictional force with the weft thread loop and the warp thread 2. After the selvage loop is held in the selvage loop, the selvage loop is released from being held by the selvage thread locking device. Further, in a second invention, as a device for carrying out the first invention, the device is disposed on a diagonal extension of the warp guide tube disposed portion, and is fed out from the selvage yarn supplying device to form a corner of the three-dimensional fabric. A selvage thread guide that guides the selvage threads connected to the end of the section, and a selvage thread guide that is arranged to be reciprocally movable along the rows or columns of the warp thread group, and equipped with a locking part at the tip, which guides the selvage threads of the wefts x and y during forward movement. The selvage yarn that is inserted into the tip loop and connected to the corner of the three-dimensional fabric during the backward motion is held, and the selvage yarn is turned into a weft X.

A selvage thread locking device was provided to be inserted in a folded manner into the loop at the tip of the y.

(Function) In the present invention, the selvage yarn supplied from the selvage yarn supplying device becomes connected to the corner of the three-dimensional fabric at the end of one selvage forming cycle, and becomes the weft X.

When y is inserted into the warp group by the weft inserter, the n thread locking tool is inserted into the tip loop of the wefts As a result, the selvage yarn is inserted in the tip loop of the weft yarns x and ■ in a folded manner. Then, with the selvage thread loop held by the selvage thread retainer, weft thread X is attached.

The tip loop of y is pulled back to the warp end, and the selvage thread is held tight at the end of the warp group. Next, the holding of the selvage thread loop by the selvage thread locking device is released, and one selvage forming operation is completed.

(Example 1) A first example embodying the present invention will be described below with reference to FIGS. 1 to 4. As shown in Fig. 1.2, a mounting frame 4 for a warp support plate 3, which fixes the ends of the warp threads Z and suspends them, is attached to a guide post 2 that is vertically installed on the machine frame 1. The mounting frame 4 is connected to the other end of a chain 5, one end of which is connected to a winding drum (not shown) which is driven to rotate forward and backward by a drive mechanism, and the mounting frame 4 is connected to the other end of a chain 5, which is connected to a winding drum (not shown) which is rotated forward and backward by a drive mechanism. It is designed to be moved up and down along the guide column 2. A support plate 7 on which warp guide tubes 6 are implanted at intervals corresponding to the number of warp yarns 2 and the matrix pitch is fixed below the mounting frame 4, and a three-dimensional fabric W is placed at a predetermined position above the support plate 7.
A woven fabric frame 8 is provided to regulate the external dimensions of the fabric. The warp guide tube 6 is a first weft inserter (first weft rapier)
When the first weft X or the second weft y is inserted into the warp Z by the 9th and 211th yarn insertion tools (second weft rapiers) 10, the first weft rapier 9 or the second weft rapier 10 comes into contact with the warp l. In order to prevent this, the support plate 7 protrudes longer than the width of both rapiers 9 and 10.

A cylinder 11 is disposed on the side of the support plate 7 in a direction perpendicular to the warp guide tube 6, and a first weft rapier 9 is mounted on a support 12 fixed to the front end of the piston rod 11a of the cylinder 11. They are fixed in parallel with a space that allows entry between them. Further, a cylinder (not shown) is similarly arranged at the rear of the support plate 7 (above in FIG. 1) in a state perpendicular to the cylinder 11, and a support body 13 fixed to the front end of the piston rod has a cylinder (not shown) arranged at right angles to the cylinder 11. A second weft rapier 10 is fixed in parallel at intervals that allow it to enter between each row of warp groups. Both weft rapiers 9 and 10 are each formed hollow, and
A first weft X and a second weft y supplied from a weft bobbin (both not shown) are inserted through the base end of each weft rapier 9, 10, and are pulled out from the tip extraction holes 9a, 10a. .

On the side of the support plate 7, which serves as a warp guide tube arrangement section, there is a selvage thread guide 14 that guides the selvage thread P paid out from a selvage thread supply device (not shown) to the corner end of the three-dimensional fabric W. The support plate 7 is supported by a bracket 15 fixed to the support frame 7a.
It is placed on the diagonal extension of . First selvage thread locking device 1
6 is fixed to the tip of a piston rod 17 of a cylinder (not shown) disposed perpendicular to the cylinder 11, and is inserted into the tip loop of the 11th I yarn X inserted into the row of the warp group by the operation of the cylinder. The forward movement (forward) position where the threads are inserted into the threads, and the backward movement (backward) where they are retracted from the position corresponding to the warp group.
It is moved and placed in position. The second selvage thread lock J118 is a cylinder (not shown) disposed parallel to the cylinder 11.
The second II yarn y is fixed to the tip of the piston rod 19 of the cylinder and is inserted into the warp group row by the operation of the cylinder. The robot is moved to the retracted (evacuation) position. The binaural thread locking device 16.18 has hook portions 16a and 18a formed as locking portions at its tip, and each hook portion 168.18a has an inclined portion 1 extending obliquely upward and rearward.
6b and 18b are formed. Then, when each selvage thread locking device 16, 18 moves back, the selvage threads P connected to the corner ends of the three-dimensional fabric W are locked to the hook parts 16a, 18a, and the selvage threads P are attached to the wefts x, y. It is designed to be inserted into the tip loop in a folded manner. In addition, a tension device 22 consisting of a pair of circles 11A21 arranged in pressure contact with each other by a compression spring 20 is disposed between the selvage thread guide 14 and the selvage thread supply device.

Next, the operation of the apparatus configured as described above will be explained. During weaving, the necessary warp threads 2 are arranged and suspended from the warp support plate 3 in advance, and threaded through the warp guide tube 6, and a weight (not shown) is attached to the lower end to form warp thread groups in multiple rows and rows. do. Further, the tip of the selvage yarn P fed out from the selvage yarn supply device and inserted through the selvage yarn guide 14 is fixed to the corner of the front frame 8.

Then, weaving is started from this state, and as weaving progresses, the warp support plate 3 is sequentially moved upward together with the mounting frame 4, and the cloth sleeve is moved upward by the required amount.

Now, when the cylinder 11 is actuated and the piston rod 11a protrudes in the state shown in FIG. 4(a), the first weft rapier 9 is inserted between each row of the warp group, as shown in FIG. 4(b').
The state shown in is reached. Next, the portion of the W41 weft X that is inserted between each row of the warp group is moved to the fabric front position by a beating lever (not shown), and then the first selvage thread locking device 16 is moved forward (advance) to It is inserted into the tip loop of 1 weft x, resulting in the state shown in FIG. 4(C). During the forward movement of the first selvage thread locking device 16, the inclined portion 16b of the tip hook #16a engages with the selvage thread P connected to the corner of the three-dimensional fabric W as shown in FIG. Thread P is inclined part 1
6b and into the inside of the hook portion 16a. Next, the piston rod 17 is pulled in and the first selvage thread locking device 1
6 retreats. At this time, the selvage yarn P is locked to the hook portion 16a, and with a predetermined tension applied by the tension device 22, it is inserted into the tip loop of the first weft X in a folded state as the selvage yarn X, as shown in FIG. The state shown in (d'') is reached. After that, the cylinder 11 is actuated and the piston rod 1
1a is pulled in, and the hook portion 16a of the first selvage thread locking device 16
The first weft rapier 9 is moved back with the selvage loop held in place, and the tip loop of the first weft X is pulled back to the end of the warp group, and then the beating of the first weft As a result, the X selvage yarn X is tightened by the tip loop of the first weft X, and is held at the end of the warp group by the frictional force between the loop and the warp yarn 2, as shown in FIG.
The state shown in e) is reached, and an X ear is formed.

Next, the second weft rapier 10 is moved forward (forward) to insert the second weft y between each row of the warp group, and in this state, the second selvage thread locking device 18 is moved forward (forward) to insert the second weft y between each row of the warp thread group. 21! The second selvage thread locking device 18 is inserted into the loop at the tip of the thread y, resulting in the state shown in FIG. The selvage yarn P connected to the corner of the three-dimensional fabric W
is locked to the hook part 18a, and the 211th
It is inserted into the loop at the end of thread y in a folded manner as shown in Fig. 4 (g
). Thereafter, with the selvage loop held in the hook portion 18a, the second weft rapier 10 is moved back and the beating lever is operated to move the second weft rapier 10 to the 21st! .

By heating the yarn y, the selvage yarn Y is made in the same manner as above.
is tightened by the end loop of the second weft y, resulting in the state shown in FIG. 4(h), and a Y selvage is formed. Thereafter, the three-dimensional fabric W is woven by sequentially repeating the above-mentioned operations. In addition, the hook part 16a of the selvage thread locking device 16.18,
X selvage thread X or y selvage thread Y held in place by 18a
The loops are disengaged from the hook portions 16a, 18a when each selvage thread locking device 16, 18 moves forward, and remain at the corner of the fabric as a small loop.

In the apparatus of this embodiment, since the X selvage and Y selvage are formed from one selvage thread P, the structure is simple, since the selvage thread supply mechanism is only provided at the location 1B.

(Example 2) Next, a second example will be described according to FIGS. 5 to 7. In this embodiment, separate selvage threads P are provided for X selvage threads x, y selvage threads Y.
This device differs from the device of the previous embodiment in that it is configured so that X and P are used. That is, the first selvage thread locking tool 16
and the second selvage thread locking device 18 are respectively connected to the second weft thread rapier 10.
, are arranged to face the first weft rapier 9, and the selvage thread guide 14 and the tension device 22 are arranged so as to be located on the diagonal lines of the rectangle formed by the warp thread guide tube 6, respectively.

Next, the action will be explained. The first weft rapier 9 moves forward from the standby state shown in FIG. 7(a) to the state shown in FIG. 7(b), and from this state, after heating by the heating lever is completed, the first selvage thread locking device 16 As the thread moves forward, the first selvage thread locking device 16 is inserted into the tip loop of the first weft X, resulting in the state shown in FIG. 7(C). Next, when the first selvage thread locking device 16 retreats, the selvage thread px is latched to the hook portion 16a, and is inserted into the tip loop of the first weft X in a folded manner as the X selvage thread X. The state shown in Figure (d) is reached. In this state, the first weft rapier 9 is retreated and beaten, and the X-selvage yarn X is tightened by the tip loop of the first weft X, resulting in the state shown in FIG. 7(e), and an X-selvage is formed. Next, after the second weft rapier 10 moves forward and the beating action is performed, the second selvage thread locking device 18 is moved forward, so that the tip of the second weft y is moved forward as shown in FIG. 7(f'). The second selvage thread locking device 18 is now inserted into the loop. Next, the second selvage thread locking device 18 retreats, so that the selvage thread PY is inserted into the tip loop of the second weft y in a folded manner as the selvage thread Y, resulting in the state shown in FIG. 7(0). . Next, by retreating and beating the 211th yarn rapier 10, the y selvage yarn Y is moved to the second position in the same manner as described above.
It is tightened by the tip loop of the weft yarn y, and the
), and a Y ear is formed. Thereafter, each operation is repeated in the same manner as described above. When using the device of this embodiment, the hook portion 168° 18a of the selvage thread locking device 16.18
A loop of the X selvage yarn X and the y selvage yarn Y released from the loop remains at one corner of the three-dimensional fabric W.

Note that the present invention is not limited to the above-mentioned embodiments. For example, as shown in FIG.
By the operation of
When moving forward, the selvage thread P is guided to a position where it does not interfere with the hook parts 16a, 18a, and after the selvage thread locking device 16.18 completes forward movement, the selvage thread P is reliably latched to the hook parts 16a, 18a. It may be configured to guide the user to the position.

Furthermore, in order to reduce the frictional resistance between the selvage thread anchor and the selvage thread, pulleys 25 are incorporated into the hook parts 16a and 18a as shown in FIG.

The surface of 18a may be coated with a material having low frictional resistance. In general, a tension device having a different configuration may be used, or a configuration in which the warp thread groups are stretched in the horizontal direction instead of a configuration in which the warp threads are stretched in the vertical direction may be adopted.

Effects of the Invention As detailed above, according to the present invention, the selvage thread locking tool as a selvage thread inserting tool for inserting the selvage thread into the weft thread loop can be used for inserting the selvage thread into the weft thread loop. Since it is only necessary to hold the selvage thread while the selvage thread is tightened by the weft thread loop, the state of contact with the selvage thread is reduced, and damage to the thread is extremely reduced. In addition, since the selvage thread locking device has the functions of both inserting and holding the selvage thread, there is no need for selvage thread holders such as a bellows needle for reorganization in conventional devices, which not only simplifies the structure of the device. Easy to control with few movements. Further, in the second invention, in addition to the above-mentioned effects, by providing a selvage thread guide, the selvage thread carried to the end of the three-dimensional fabric is securely held during the return movement of the selvage thread locking device, and the selvage thread is looped into the weft thread loop. It has the excellent effect of being inserted into the body.

[Brief explanation of the drawing]

Figures 1 to 4 show a first embodiment embodying the present invention, in which Figure 1 is a plan view, Figure 2 is a front view, and Figure 3 is a front view.
The figure is a side view of the device showing the action of the selvage thread locking device, Fig. 4<a
>~(h) is a schematic plan view explaining the otoforming effect, fifth
Figures 7 to 7 show the second embodiment, in which Figure 5 is a plan view of the main part, Figure 6 is a front view of the main part, and Figures 7 (a) to (h).
) is a schematic plan view for explaining the selvage forming action, FIG. 8 is a side view showing a modified example of the selvage thread guide, FIG. 9 is a side view showing a modified example of the hook part, and FIG. 10 is a schematic diagram of a conventional device. It is. 1st weft rapier (1st weft inserted only) 9, 241st! Thread rapier (second weft insertion tool) 10. Selvage thread guide 14, first selvage thread locking device 16, second selvage thread locking device 18, hook portion 168.18a as a locking portion, first weft x1 second weft y1 warp z, x selvage thread , y selvage thread Y1 selvage thread P, PX, PY, three-dimensional fabric w0 Patent applicant Toyota Industries Corporation Shiki Ri
Person Patent Attorney On 1) Hironobu Figure 5 Figure 6

Claims (1)

[Claims] 1. In a warp group in which a large number of warps (z) are stretched in multiple rows and columns, a first weft (x) is placed between each row, and a second weft (y) is placed between each row.
) are inserted perpendicularly to the warp (z), and are woven so as to form a loop at the tip and fold back, and to prevent each weft (x, y) from falling out, a selvage yarn is inserted into the loop at the tip. In a three-dimensional loom that weaves in a folded manner, the first weft (x) or the second weft (y) is inserted into the warp group by the weft insertion tool, and the selvage thread anchor is inserted into the weft (y). The selvage thread is inserted into the end loop of the weft (x, y) and the selvage thread connected to the corner of the three-dimensional fabric is locked, and then the selvage thread is pulled back into the end loop of the weft thread (x, y). Then, while holding the selvage thread loop with the selvage thread locking device, the tip loop of the weft (x, y) is pulled back to the end of the warp group, so that the selvage thread is connected to the weft loop and the warp thread z.
A method for forming a selvage in a three-dimensional loom, in which a selvage thread loop is released from being held by a selvage thread locking device after being held at an end of a group of warp threads by a frictional force between the selvage thread loop and the selvage thread loop. 2. A warp group in which a large number of warps (z) are stretched in multiple rows and columns, the first weft (x) is inserted between each row, and the second weft (y
) are inserted perpendicularly to the warp (z), and are woven so as to form a loop at the tip and fold back, and to prevent each weft (x, y) from falling out, a selvage yarn is inserted into the loop at the tip. In a three-dimensional loom that weaves in a folded manner, the warp thread guide tube is disposed on a diagonal extension of the warp guide tube installation section and guides the selvage thread fed out from the selvage thread supply device to the corner end of the three-dimensional loom. The selvage thread guide is arranged so as to be able to reciprocate along the rows or columns of the warp thread groups, and is provided with a locking part at the tip, so that the weft threads (x,
A selvage yarn locking that is inserted into the end loop of the weft yarn (x, y) and holds the selvage yarn that is connected to the end of the three-dimensional fabric during backward movement, and inserts the selvage yarn into the end loop of the weft yarn (x, y) in a folded manner. A three-dimensional loom ear forming device equipped with a tool.