JP2507879B2 - Three-dimensional loom beating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a three-dimensional loom for weaving a three-dimensional woven fabric with three-component yarns of a warp z, a first weft x and a second weft y. The present invention relates to a beating device.

(Prior Art) Generally, in this type of three-dimensional loom, Japanese Patent Publication No. 53-4145
As disclosed in Japanese Patent Laid-Open Publication No. Gazette, a pair of first wefts x having a loop formed by bending a tip end is driven between each row of warp z groups stretched in a plurality of rows and a plurality of columns, and the loops are selvaged. A three-dimensional woven fabric is woven by repeating the process of inserting the second weft yarn y between each row of the warp z group after inserting the yarn to fix the first weft yarn x. Then, as shown in FIGS. 5 and 6, the weft insertion tool 31, 32 for inserting the first weft thread x or the second weft thread y between the warp threads z is inserted into the warp z group when the weft thread insertion tool 31, 32 is inserted into the warp z group. In order to prevent the 32 from coming into contact with each other, the warp guide tubes 33, through which the warp z is inserted, are arranged in a plurality of rows and a plurality of columns at predetermined intervals on the substrate 34 at the passage positions of the weft insertion tools 31, 32.

(Problems to be Solved by the Invention) In order to increase the strength of the three-dimensional fabric, it is necessary to woven at a high density, and in order to achieve a high density, the intervals between the warp yarns z and the warp yarns z are struck. It is necessary to narrow the space between the wefts x and y. As a method of narrowing the interval between the wefts x and y driven between the warp yarns z, Japanese Patent Publication No. 54-38673 discloses that the warp yarns are arranged in a state orthogonal to the warp z group and each warp yarn z is inserted. A method of tightening the weft yarns x and y driven into the warp z group by a plate-shaped reed reciprocating in the z-stretching direction is disclosed. Also, Japanese Patent Publication No. 53-4144 discloses a method of tightening the wefts x and y with a heddle instead of a flat reed. On the other hand, due to restrictions such as the outer diameter of the warp guide tube 33 and the thicknesses of the weft insertion tools 31 and 32, there is a certain limit in the tension interval of the warp z group, and in order to densify the three-dimensional fabric, the warp z It is necessary to squeeze the group after it has been pulled out from the warp guide tube 33. However, in the method of tightening the wefts x and y using the above-mentioned reed and heddle frame, it is necessary to maintain the same intervals between the warp threads z inside the three-dimensional fabric and outside the three-dimensional fabric. In addition, there is a disadvantage that it cannot be applied to the weaving method in which the warp z group is drawn out from the warp guide tube 33 and then drawn.

In addition, Japanese Patent Publication No. 57-17990 discloses that a beating lever is inserted between warp yarns z every time weft yarns x and y are inserted when weaving a three-dimensional woven fabric to perform necessary beating. No description or operation of the device is made.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, in the present invention, a first weft yarn is provided between each line of a plurality of warp yarns z stretched in a plurality of rows and a plurality of columns. In a three-dimensional loom in which the second weft yarn y is inserted between the columns so as to be orthogonal to the warp yarn z, the retreat position and the warp yarn z facing the row or column outside the warp z group.
Inside the group, the warp yarns are arranged so as to be movable along the rows or columns of the warp z group between the beating position where the beating surface abuts in parallel with the woven front surface at approximately the center of the row or column. A drive device for driving the reeds is provided outside the warp z group at a position corresponding to at least one row or column of the z group.

(Operation) In this device, the first weft yarn x is inserted between each row of the warp z group stretched in a plurality of rows and a plurality of columns, and the second weft yarn y is inserted between each column in the same manner as in the conventional device, and each weft yarn is inserted. An ear thread is inserted into the tip loop of x and y. At the time of inserting the wefts x and y, the reed is placed in the retracted position outside the warp z group, and the wefts x and y
The driving device is driven after the insertion work of one time is completed or after the insertion work of several times is completed, and the reed is moved from the retracted position along the row of the warp z group to pass through the column or substantially the center of the row. Then, at the beating position, the beating surface of the reed comes into contact with the front surface of the weave in parallel, and the wefts x and y are tightened in the tension direction of the warp z. As for the reed, the reed surface has the first weft x or the second weft y.
Since the center portion is hit in a state orthogonal to the, the wefts x and y having at least the number of reeds are securely tightened in the tension direction of the warp z, and the density of the three-dimensional fabric is increased.

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a plurality of warp guide tubes 2 are provided below the cloth fell frame 1 for setting the outer shape of the three-dimensional fabric F.
Is provided with healds 3 that are planted at a predetermined pitch larger than the spacing between the warp yarns Z in the three-dimensional fabric F, the warp yarn z is inserted through the warp guide tube 2, and a weight (not shown) is attached to the lower end of the warp yarn z. Is hung, and a large number of warp threads z are stretched in a truncated pyramid shape between the cloth fell frame 1 and the heddle 3.
A first rapier 4 for inserting the first weft x is arranged between the rows of the heddle 3 so as to be capable of reciprocating, and a second weft y is inserted behind the heddle 3 between the rows of the warp z. Second rapier 5
Are reciprocally movable. Both rapiers 4 and 5 are formed hollow, and wefts x and y supplied from a weft supply device (not shown) are inserted from the base ends of the rapiers 4 and 5 and pulled out from the pull-out hole at the tip. It is like this.

A bracket 6 is fixed near the side of the cloth fell frame 1, and a plate-shaped reed 8 is attached to a support shaft 7 supported on the bracket 6 so as to extend in a direction orthogonal to the row of the warp z. It is rotatably supported so as to move along the row in the center of the warp z group. A support bracket 9 is fixedly installed above the bracket 6, and an air cylinder 10 as a driving device is rotated by a shaft 11 at its base end so as to extend along the longitudinal direction of the three-dimensional fabric F on the support bracket 9. Supported as possible. The reed 8 is connected at one end thereof to the piston rod 10a of the air cylinder 10, and when the air cylinder 10 is actuated, the retracted position shown by the chain line in FIG. It is swung between the beating position where it touches.

Next, the operation of the device configured as described above will be described.
The insertion of the first weft yarn x and the second weft yarn y is performed by the reciprocating movement of the first rapier 4 or the second levia 5 as in the known device, and the selvage yarns ( (Not shown) is inserted.

When the wefts x and y are inserted into the air cylinder 10, the piston rod 10a is held in the retracted position shown by the chain line in FIG.
Are held in the retracted position. After the first reciprocating movement of the first rapier 4 completes one inserting operation of the first weft x, the air cylinder 10 is activated each time the reciprocating movement of the second rapier 5 completes one inserting operation of the second weft y. Piston rod 10a
And the reed 8 is moved to a repulsion position where the repulsion surface 8a of the reed 8 abuts in parallel with the front surface of the weave, and strikes almost the center of the reed 8 in a state orthogonal to the second weft y. As a result, the second weft yarn y
Are tightened in the direction in which the warp threads z are stretched, and the density of the three-dimensional fabric F is increased.

Carbon fibers are used as both wefts x and y and warp z, and 33 yarns are arranged in rows and columns as a group of warp zs in a square shape of 50mm square, and 32 yarns are respectively provided as wefts x and y. The values of the interval Pxz between the first wefts x and the gap Pyz between the second wefts y and the ratio Vf of the fibers in the unit volume when the three-dimensional woven fabric is actually woven are as follows. It was

<Without beating> Pxz = Pxy = 5.8, Vf estimation = 40.1% <When beating is performed every time the second weft y is inserted (however, beating force 10 kg / time)> Pxz = Pxy = 5.3, Vf Estimated = 42.0% By performing the beating operation, the gap between the wefts x and y is reduced by about 10%, which shows the beating effect. Moreover, both wefts x and y are horizontally organized by beating, and wefts x and y
No trace of beating against him was found.

Second Embodiment Next, a second embodiment will be described with reference to FIGS. In this embodiment, two beating devices, a first beating device 12 for beating the warp z group in the column direction and a second beating device 13 for beating in the row direction, are used as the beating devices. In order to surely prevent the reed 8 from interfering with the warp z during beating, the warp z is not inserted into the warp guide tube 2 located at the center of the row and the column. The point that a group is stretched is different from the above embodiment. When weaving the three-dimensional woven fabric F in this embodiment, the first reed beating device 12 uses the warp yarn z.
The reed 8 is activated each time the first weft thread x is inserted between the rows of the group.
Performs beating in the row direction orthogonal to the first weft x, and every time the insertion of the second weft y between the rows of the warp z group is completed, the second beating device 13 is actuated to move the reed 8 to the second. Repulsion is performed in a direction orthogonal to the weft yarn y. First beating device 12 and second beating device
13 is configured by an interlock mechanism so that both do not operate at the same time.

When the three-dimensional woven fabric F is actually woven under the same conditions as in the above-mentioned embodiment, the value of the gap Pxz between the first wefts x and the value of the gap Pyz between the second wefts y and the value of the ratio Vf of the fibers in the unit volume Vf Became:

Pxz = Pyz = 5.0, Vf estimation = 43.4% It was confirmed that the beating effect was further improved by alternately beating at the center of the first weft x and the second weft y. Was done.

The present invention is not limited to the above-described embodiments, and, for example, a motor capable of forward and reverse rotation drive is used instead of the air cylinder 10 as a drive device for rotating the reed 8, and the reed is used as an output shaft of the motor. 8 may be attached, or the beating operation may be performed every several times instead of every time the wefts x and y are inserted.

EFFECTS OF THE INVENTION As described in detail above, according to the present invention, the warp yarns are also woven when the weft yarns are squeezed from the insertion position of the weft yarns x and y toward the cloth fell in order to increase the density. The reed beating is performed in a state where there is little interference between 1 and the reed, the wefts x and y can be securely tightened, the density of the three-dimensional fabric can be increased, and the device structure is simple. Has an excellent effect of being.

[Brief description of drawings]

FIGS. 1 and 2 show a first embodiment embodying the present invention. FIG. 1 is a front view and FIG. 2 is a line AA in FIG. 1 in which wefts x and y are omitted. Sectional views, FIGS. 3 and 4 show a second embodiment, FIG. 3 is a front view, and FIG. 4 is wefts x and y.
3 is a sectional view taken along line BB in FIG. 3, FIG. 5 is a side view showing a weaving state of a conventional device, and FIG. 6 is a perspective view showing a warp guide. The cloth fell frame 1, the warp guide tube 2, the reed 8, the reed surface 8a, the air cylinder 10 as a drive device, the first weft x, the second weft y,
Warp z, three-dimensional fabric F.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroshi Omori 2-chome, Toyota-cho, Kariya city, Aichi Stock company, Toyota Industries Corp. (72) Inventor Makoto Tsuzuki 2-chome, Toyota-cho, Kariya city, Aichi stock company Toyota Automatic Loom Works (72) Inventor Yoshio Tada 1-5-5 Minamihonmachi, Joetsu City, Niigata Prefecture Arizawa Manufacturing Company (72) Inventor Shinichi Shiraishi 1-5-5 Minamihonmachi, Joetsu City, Niigata Prefecture Inside the ceremony company Arisawa Seisakusho

Claims (3)

(57) [Claims] 1. A first weft (x) is provided between each row of a plurality of warp (z) stretched in a plurality of rows and a plurality of columns, and a second weft (y) is provided between each row. In a three-dimensional loom to be inserted in a state orthogonal to the warp (z), in a retracted position facing the row or column outside the warp (z) group and in substantially the center of the row or column inside the warp (z) group The reeds arranged so as to be movable along the rows or columns of the warp (z) group between the beating position where the beating surface abuts in parallel with the front surface of the weave correspond to the rows or columns of the warp (z) group. A repulsion device for a three-dimensional loom, in which a drive device for driving the reed is provided outside of the warp (z) group in correspondence with the reed. 2. The reed is rotatably supported on a support shaft arranged outside the warp (z) group in parallel with its row or column, and at one end thereof, a piston rod of an air cylinder as a drive device. The beating device for a three-dimensional loom according to claim 1, which is connected to the reed. 3. The reed for a three-dimensional loom according to claim 1 or 2, wherein the reed and the driving device are arranged at two locations corresponding to the rows and columns of the warp (z) group. Hammering device.