JP3604339B2 - Three-dimensional fabric weaving equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
[0002]
The present invention relates to a weaving device of the three-dimensional fabric (three-dimensional textile) (machine).
2. Description of the Related Art
[0003]
In recent years, inventions related to various three-dimensional fabric techniques have been made. The present applicant has already applied for such a three-dimensional fabric and a fabric device (Japanese Patent No. 191135, Japanese Patent Application No. 2-240438).
[0004]
Further, a three-dimensional fabric and a weaving device different from the three-dimensional fabric are provided. That is, as shown in FIG. 7 in a perspective view, and as shown in FIG. 8 which is a view taken along the line IIX-IIX in FIG. The X yarn 1 is inserted by the X yarn insertion rod 101 from the direction orthogonal to the yarn 3, and from the direction orthogonal to the X yarn 1 and the Z yarn 3 and onto the X yarn 1. The Y thread 2 is inserted by the Y thread insertion rod 102, and thereafter, the inserted X thread insertion rod 101 is pulled out, so that the X thread 1 is entangled with the Y thread 2 to form a single layer of fabric. A three-dimensional fabric woven by repeating the process is provided.
[0005]
However, in the case of the above-mentioned three-dimensional woven fabric, since the X thread insertion rod 101 and the Y thread insertion rod 102 must be cantilevered, the lengths of these insertion rods cannot be increased significantly. Therefore, in the case of such a three-dimensional fabric and a three-dimensional fabric machine, the dimensions of the three-dimensional fabric to be woven, particularly, the dimensions in the X direction and the Y direction are limited. At present, it is possible to weave only those having dimensions of about 200 to 300 mm square.
[0006]
Further, in the case of the three-dimensional fabric machine, since the Z yarns are arranged in advance in the Z direction, it is not possible to structurally arrange the beating device, and therefore, the density of the three-dimensional fabric to be woven is reduced. (Weaving density between layers) could not be increased.
[0007]
The present invention has been made in view of the above current situation, dimensionally steric fabric with enhanced greater and density object of the present invention is to provide a weaving device of the three-dimensional fabric that can be woven.
[Means for Solving the Problems]
[0008]
Weaving method Hontate body fabric knitting needles provided with the Z yarn gripping means at the lower end, are aligned in the X and Y directions in a plan view and a plurality of arranged, between the needles arranged several plurality, first In the step, the X yarn is inserted in the X direction from the beginning to the end of the fabric through a zigzag shifted in the Y direction at the position of the knitting needle, and in the subsequent step, the X yarn is inserted in the X direction and the Y direction is appropriately inserted at the knitting needle. Return to the zigzag from the end of the fabric to the beginning,
In the next step, the Y yarn is inserted in the Y direction in the zigzag shifted in the X direction at the location of the knitting needle from the beginning to the end of the fabric as appropriate, and in the subsequent step, the Y yarn is inserted in the Y direction at the location of the knitting needle. Weaving more fabric by returning from the end to the beginning of the fabric in a zigzag shifted in the direction,
By repeating the above series of steps and laminating a woven fabric composed of X yarns and Y yarns in a multilayer shape in the Z direction, weaving a three-dimensional fabric having a desired thickness,
When woven into a three-dimensional woven fabric having a desired thickness, the above-described knitting needles grip the Z thread and pull out the woven fabric in a direction perpendicular to the surface of each woven fabric, so that X yarns and Y yarns orthogonal to each other are obtained. It is characterized by being three-dimensionally woven by Z yarns.
[0009]
According to the method for weaving a three-dimensional woven fabric comprising the steps described above, after the woven fabric is woven in a multilayer shape by the X yarns and the Y yarns, the knitting needles arranged in the Z direction are pulled out. Since the Z yarn is inserted through the multi-layered fabric, a space is formed above the knitting needle that does not obstruct the composite direction, which is the X direction and the Y direction. Therefore, the X yarn and the Y yarn are inserted. Weaving a three-dimensional woven fabric with no restrictions on the dimensions in the X and Y directions because the length of the insertion means can be greatly reduced because the insertion means can be arranged in a two-sided manner. Becomes possible.
The X, Y, and Z yarns may be yarns having an angle of intersection with each other, and particularly preferably, the yarns are orthogonal to each other. Further, the knitting needle does not need to be a so-called “knitting needle”, and a direction in which a woven fabric woven with X yarns and Y yarns is laminated in a multilayer shape is orthogonal to (crosses) the X yarns and the Y yarns. Alternatively, a rod or a pipe through which the Z thread can be penetrated, or a pipe through which the Z thread can be penetrated, may be collectively referred to as a "knitting needle" in the present specification.
[0010]
Further, in the weaving method of the three-dimensional fabric, when the zigzag is a zigzag shifted for each knitting needle, a three-dimensional fabric having high strength and a stable woven structure can be realized.
[0011]
Before the X yarn is inserted at the end in the X direction and returned to the start end side, before the entanglement yarn is inserted in the Y direction and before the Y yarn is inserted at the end and returned to the start end side in the Y direction, When the entanglement yarn is inserted in the X direction, both the X yarn and the Y yarn can weave a strong three-dimensional woven fabric in which the woven fabric edge that is the terminal end (return end) is securely fastened. However, in place of the entanglement thread, it is also possible to temporarily insert a fixed needle and weave.For example, when weaving a three-dimensional woven fabric having a decorative loop formed at the edge, this configuration is better. This is a preferable configuration.
[0012]
The weaving apparatus according to the present invention is characterized in that a plurality of knitting needles provided with a Z thread gripping means for gripping a Z thread at the lower end and arranged so as to be able to be pulled out in the Z direction are arranged in a X direction and a Y direction in a plan view by a holding means. Place it,
A double-supported X thread insertion unit capable of forming an X thread insertion path in the X direction above the knitting needle group is removably disposed from the weaving area, and the X thread insertion needle holding the X thread is inserted into the X thread insertion needle. It is arranged on the road so that it can reciprocate in the X direction,
A double-supported Y thread insertion unit capable of forming a Y thread insertion path in the Y direction above the knitting needle group is removably disposed from the weaving area, and the Y thread insertion needle holding the Y thread is inserted into the Y thread insertion needle. It is arranged on the road so that it can reciprocate in the Y direction,
Above the knitting needle group, a beating device is arranged so that the woven fabric woven in the knitting needle group can be beaten, moved in the Z direction and pressed and receded toward the woven fabric side ,
And the holding means has at least two holding members fixed in the X direction and relatively shifted in the Y direction, and at least two holding members fixed in the Y direction and relatively shifted in the X direction,
The two holding members fixed in the X direction are provided with elongated holding holes elongated in the Y direction for holding the knitting needles in correspondence with the alignment of the knitting needles. Each time one of the holding members feeds the X yarn along the X yarn insertion path, the holding member is moved relative to the other holding member in the Y direction and shifted in position.
The two holding members fixed in the Y direction are provided with elongated holding holes elongated in the X direction for holding the knitting needles corresponding to the arrangement positions of the knitting needles. Each time one holding member feeds the Y yarn along the Y yarn insertion path, the holding member moves relative to the other holding member in the X direction and is displaced in position.
It is characterized by the following.
[0013]
Thus, according to the weaving apparatus configured as described above, the device can be realized on Kio forming method.
[0014]
Further, in the weaving device, the holding means has at least two holding members in the X direction,
If one of the two holding members is configured to move relative to the other holding member in the Y direction and be displaced in position, two groups of two holding members By arranging the knitting needles separately, it is possible to realize a configuration in which the zigzag X yarn shifted in the Y direction can be easily inserted in the insertion of the X yarn in the X direction.
[0015]
Further, in the weaving device, the holding means has at least two holding members in the Y direction,
If one of the two holding members is configured to move relative to the other holding member in the X direction and be displaced in position, two groups of two holding members By arranging the knitting needles separately, it is possible to realize a configuration in which the insertion of the zigzag Y thread shifted in the X direction can be easily performed in the insertion of the Y thread in the Y direction.
[0016]
Further, in the weaving device, when the amount of relative movement and positional deviation is less than or equal to the arrangement pitch of the knitting needles from the aligned position to both sides, each X yarn or Y yarn is The weaving apparatus can knit a fabric in which the X yarn or each Y yarn is entangled with a separate Z yarn.
[0017]
Further, in the weaving device, the plurality of knitting needles are vertically held by a single holding means at a lower end, and are configured to be movable in the Z direction according to progress of lamination of the fabric layer. Thus, the weaving device has a constant vertical position between the upper end of the knitting needle and each insertion unit.
BEST MODE FOR CARRYING OUT THE INVENTION
[0018]
Hereinafter, the woven device of three-dimensional fabric according to an embodiment of the present invention (Example), the weaving process will be described specifically with reference to the drawings.
1 is a side sectional view of a three-dimensional woven fabric weaving apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of a holding member of a holding apparatus of the weaving apparatus of FIG. (B) is a plan view of each holding member shown in (a).
In FIG. 1, reference numeral 1 denotes an X yarn, 2 denotes a Y yarn, and 4 denotes an entangled yarn. In FIG. 1, only the insertion unit of the X yarn 1 is shown.
As shown in FIG. 1, a knitting needle 6 having a hook (Z-thread gripping means) 6a for locking a Z-thread 3 (see FIG. 6) at a lower end thereof is aligned in the X and Y directions in plan view. Are located.
The knitting needles 6 are held by elongated holding holes 8 a formed in four holding members 8 of the holding device 7 so as to be arranged in a line. In FIG. 1, two holding members 8A and 8B for shifting the knitting needle 6 out of the four holding members 8 so that the knitting needle 6 is shifted in position in the Y direction to form a zigzag when the X yarn 1 is inserted in the X direction. Is shown. As shown in FIG. 2A, the two holding members 8A and 8B allow two groups of knitting needles 6 to move to both sides in the Y direction from a state in which the knitting needles 6 are arranged in a line in the X direction. In addition, elongated holding holes 8a are regularly arranged. That is, the long holding holes 8a are regularly arranged with respect to the adjacent holding holes 8a in a state where they are partially wrapped in the longitudinal direction of the long holes when viewed from the side. The two holding members 8A and 8B have the same physical configuration as shown in FIG. 2B, but are arranged in the holding device 7 as shown in FIG. They are arranged in the same state in the Y direction. As a result, assuming that the holding member 8A is moved to the right by a distance slightly larger than the diameter of the knitting needle 6 with respect to the holding member 8B, the knitting needle 6 located at the left end (end) in FIG. The group of knitting needles 6 arranged alternately from the knitting needles 6 moves to the left, and the knitting needles 6 positioned second from the left side (end) and the group of knitting needles 6 arranged alternately from the knitting needle 6 are positioned at that position. Will stay. If the holding member 8A is moved to the left by a distance slightly larger than the diameter of the knitting needle 6 with respect to the holding member 8B, the knitting needle 6 located second from the left end (end) and one of the knitting needles 6 The group of knitting needles 6 arranged at every other position moves to the left, and the group of knitting needles 6 located at the left end and the group of knitting needles 6 arranged at every other position from the knitting needle 6 remain at that position.
Although not shown, the present weaving apparatus includes two holding members (FIG. 1) for displacing the knitting needle 6 so as to be displaced in the X direction and zigzag when the Y yarn 2 is inserted in the Y direction. (Not shown) are also provided.
Although not shown, the holding members 8A and 8B for shifting the Y thread 1 in the Y direction and the holding members for shifting the Y thread 2 in the X direction (not shown). The holding members 8A and 8B are configured as separate units, for example, when shifted in the X direction for inserting the Y thread 2, are shifted in the Y direction for inserting the X thread 1. Are integrally moved with one of the holding members (not shown) for shifting in the X direction for inserting the Y thread 2.
The lower end of the hook 6a of the knitting needle 6 is held vertically by a knitting needle holding plate (knitting needle holding means) 9. The knitting needle holding plate 9 is configured to be movable upward relative to the holding member 8 as weaving (weaving in the thickness direction of the fabric) proceeds. In this embodiment, the holding member 8 moves relative to the base member of the weaving device at the same timing and speed as the knitting needle holding plate 9 as weaving (weaving in the thickness direction of the fabric) progresses. The knitting needle holding plate 9 is configured to be located at the same position in the vertical direction.
The holding member 8 is configured to move in the up-down direction while being guided by the guide rod 7A.
An X thread insertion unit 10 shown in FIG. 1 is disposed on a base member of the main weaving device (not shown) so as to be able to enter and retract into the weaving region R. Specifically, the X thread insertion unit 10 includes a support rod 10a that defines an X thread insertion path, and the support rod 10a reciprocates movably in the longitudinal direction of the support rod 10a, that is, in the X direction. A member 10b is arranged, and an insertion needle 10A for inserting the X thread 1 in the X direction is attached to a lower end of the reciprocating member 10b.
In this embodiment, the reciprocating operation of the reciprocating member 10b on the support rod 10a is realized by a ball screw mechanism. Alternatively, a linear motor or the like may be used.
The position of the support rod 10a is shifted from the position of the weaving region R above the aligned knitting needle 6 as shown in FIG. The X thread insertion unit 10 is configured to be movable integrally with the X thread insertion unit 10 up to the withdrawn standby position. Although not shown, the retreating operation of the X thread insertion unit 10 is performed by a pneumatic unit or a linear reciprocating mechanism including a pinion and a rack. Alternatively, it can be performed by another known mechanism.
By the way, although not shown in FIG. 1, both ends of the support rod 10 a are supported on the frame side of the X thread insertion unit 10 in a so-called double-supported manner. Therefore, the rigidity of the support rod 10a can be increased as required. Therefore, in the weaving apparatus according to the present invention, the length of the support rod 10a can be freely set. .
Although not shown, a Y thread insertion unit (not shown) having exactly the same configuration as the X thread insertion unit 10 shown in FIG. 1 is orthogonal to the X thread insertion unit 10, that is, It is movably arranged in front of the hand and at the same height from a state similarly located in the weaving area R above the knitting needle 6 to a standby position in which the weaving area R is withdrawn.
The X yarn insertion unit 10 and the Y yarn insertion unit (not shown), together with a beating unit 13 described later, alternately enter the weaving region R based on the control of the control device of the weaving device. It is configured to be evacuated.
The beating unit 13 is disposed at a position above the weaving region R above the knitting needle 6, and the beating unit 13 is inserted at an appropriate timing, for example, the X yarn 1 and the Y yarn 2 are inserted. Each time, it is configured to descend from above and perform a so-called beating. The beating unit 13 is provided with an accommodation hole 13a for accommodating the knitting needle 6 so as not to interfere with the knitting needle 6 during a beating operation.
[0019]
As shown in FIG. 1, when the X yarn insertion unit 10 protrudes into the weaving region R, the X yarn 1 shown in FIG. The entanglement thread insertion unit (not shown) for inserting the entanglement thread 4 is arranged inside the folded portion of the wrapping thread. This entanglement thread insertion unit uses a known device used for entanglement of weft yarns when weaving rapier weave such as tape.
Although not shown, the entanglement insertion unit (not shown) for inserting the entanglement inside the folded portion of the Y yarn 2 is also arranged. The two twine insertion units have the same configuration.
[0020]
Thus, according to the main weaving apparatus configured as described above, a three-dimensional fabric can be woven as follows. Hereinafter, together with the control contents of the weaving device, illustrating a weaving method.
[0021]
First, as shown in FIG. 1, the knitting needles 6 arranged in the X direction and the Y direction are moved relative to the holding members 8A and 8B shown in FIG. By shifting the position, in this embodiment, every other knitting needle 6 aligned in the X direction is positioned at a position shifted in the Y direction.
In this state, the X thread insertion unit 10 is operated to push the support rod 10a into the weaving region R, and in this state, the reciprocating member 10b (insertion needle 10A) on the support rod 10a is moved from the start end to the end side. And insert the X thread 1 to the end (the left end in FIG. 1). Next, in this state, the entanglement thread insertion unit (not shown) operates to position the entanglement thread 4 inside the folded portion of the X thread 1 (see FIG. 1).
In this state, the holding device 8 operates again to operate so that the relative positions of the holding members 8A and 8B shown in FIG. 2 in the Y direction are reversed.
Next, the reciprocating member 10b (insertion needle 10A) of the X thread insertion unit 10 returns from the end to the start end (the right end in FIG. 1), and the X thread 1 whose end is fixed by the entanglement thread 4 from the end to the start end. insert.
Thus, the X thread 1 for forming one layer is inserted. FIG. 3 shows the woven fabric in this state. That is, the X yarn 1 is zigzag arranged with respect to the knitting needles 6 aligned in the X direction, and the folded portion is fixed by the entanglement yarn 4.
Similarly to the X thread insertion unit 10, the Y thread insertion unit operates to insert the Y thread 2 above the X thread 1 orthogonally as shown in FIG. In FIG. 4, reference numeral 4 denotes an entanglement yarn of the Y yarn 2 and 10A denotes an insertion needle of the Y yarn 2.
As a result, one layer of the fabric A (A1) is woven.
When one layer of the fabric A is woven in this manner, the beating unit 13 descends and performs a beating process on the fabric A. By this beating, the density of the fabric is increased.
Next, the frame supporting the holding member 8 is lowered by an amount corresponding to one layer of the fabric. At this time, the knitting needle holding plate 9 does not move up and down. As a result, the upper end of the knitting needle 6 is kept constant with respect to the base member of the weaving device, in other words, the absolute height position of the upper end of the knitting needle 6 is always kept constant.
By repeating the above series of steps, a plurality of fabrics A1, A2, A3,... Are sequentially woven in the Z direction (vertical direction in FIG. 1) in a multilayered manner, and a three-dimensional fabric is gradually woven.
Then, when the woven fabric is woven in a multilayer shape by a predetermined thickness, the beating unit 13 is retracted from the woven region R, and a space is formed above the woven region R. Then, the Z thread 3 is locked on the hook 6a at the lower end of each knitting needle 6, and the knitting needle 6 is pulled out upward. For example, as illustrated in FIG. 5, the pull-out is performed by forming a locking groove 6 c above the knitting needle 6, disposing a knitting needle pull-out unit 15 above the knitting needle 6, and The lower end of the pull-out rod 15a, which can be moved in the X direction or the Y direction, may be configured to engage with the locking groove 6c of the knitting needle 6 and pull out. However, it may be configured to be pulled out by another mechanism. In addition, in the embodiment shown in FIG. 5, the pull-out is performed one by one, but one line (a group of knitting needles 6 arranged in one line in the X direction) or one line (one line in the Y direction). Knitting needles 6) or all of them may be performed at once.
The three-dimensional woven fabric woven as described above becomes a three-dimensional woven fabric C in which the X yarn 1, the Y yarn 2, and the Z yarn 3 are woven so as to be orthogonal to each other, as shown in a side view in FIG.
When weaving is performed by the above-described weaving device, it is possible to weave a three-dimensional woven fabric C having a large dimension in the X direction and the Y direction, which has not been achieved in the past, and it is also possible to beat the holding member 8 and the beating unit 13. Therefore, the three-dimensional fabric C having a high density is obtained.
【The invention's effect】
[0022]
ADVANTAGE OF THE INVENTION According to the weaving apparatus which concerns on this invention, compared with the conventional three-dimensional fabric, the weaving method which can weave a large-sized and high-density three-dimensional fabric can be realized by this apparatus.
[Brief description of the drawings]
[0023]
FIG. 1 is a side sectional view of a three-dimensional fabric weaving apparatus according to an embodiment of the present invention.
2A and 2B are diagrams showing a specific configuration of a holding member of the weaving device shown in FIG. 1, wherein FIG. 2A is a perspective view and FIG. 2B is a plan view of each holding member shown in FIG.
FIG. 3 is a plan view of the weaving area of the weaving apparatus shown in FIG. 1 after the X yarn insertion is completed, as viewed from above.
FIG. 4 is a plan view of the weaving region of the weaving device shown in FIG. 1 after the Y yarn insertion is completed, as viewed from above.
FIG. 5 is a side view showing one embodiment of a knitting needle pull-out unit of the weaving device shown in FIG. 1;
FIG. 6 is a side view showing a configuration of a three-dimensional fabric woven by the weaving device shown in FIG. 1;
FIG. 7 is a perspective view of a weaving area showing a weaving state of a conventional three-dimensional fabric.
FIG.
8 is a diagram showing an X thread inserted state in a woven state of the conventional three-dimensional fabric shown in FIG.
[Explanation of symbols]
[0024]
1 ... X thread 2 ... Y thread 3 ... Z thread A ... Fabric C ... 3D woven fabric

Claims (4)

A plurality of knitting needles which are provided with a Z thread grasping means for grasping the Z thread at the lower end and which are arranged so as to be able to be pulled out in the Z direction, are arranged in alignment with the holding means in the X direction and the Y direction in plan view, and
A double-supported X thread insertion unit capable of forming an X thread insertion path in the X direction above the knitting needle group is removably disposed from the weaving area, and the X thread insertion needle holding the X thread is inserted into the X thread insertion needle. It is arranged on the road so that it can reciprocate in the X direction,
A double-supported Y thread insertion unit capable of forming a Y thread insertion path in the Y direction above the knitting needle group is removably disposed from the weaving area, and the Y thread insertion needle holding the Y thread is inserted into the Y thread insertion needle. It is arranged on the road so that it can reciprocate in the Y direction,
Above the knitting needle group, a beating device is arranged so that the woven fabric woven in the knitting needle group can be beaten, moved in the Z direction and pressed and receded toward the woven fabric side,
And the holding means has at least two holding members fixed in the X direction and relatively shifted in the Y direction, and at least two holding members fixed in the Y direction and relatively shifted in the X direction,
The two holding members fixed in the X direction are provided with elongated holding holes elongated in the Y direction for holding the knitting needles in correspondence with the alignment of the knitting needles. Each time one of the holding members feeds the X yarn along the X yarn insertion path, the holding member is moved relative to the other holding member in the Y direction and shifted in position.
The two holding members fixed in the Y direction are provided with elongated holding holes elongated in the X direction for holding the knitting needles corresponding to the arrangement positions of the knitting needles. Each time one holding member feeds the Y yarn along the Y yarn insertion path, the holding member moves relative to the other holding member in the X direction and is displaced in position.
A weaving device. The relative displacement and the amount of positional deviation are both equal to or less than the arrangement pitch of the knitting needles from the aligned position to both sides,
The double-supported X-yarn insertion unit is supported on the frame side of the unit in a double-supported manner and extends in the X direction. The support rod is arranged reciprocally along the support rod and supplies the X-yarn. With a thread insertion needle,
The above-mentioned double-sided Y thread insertion unit is supported on the frame side of the unit in a double-supported manner and extends in the Y direction, and a Y rod arranged to reciprocate along the support rod to supply the Y thread. With a thread insertion needle,
The weaving device according to claim 1, wherein The plurality of knitting needles are vertically held by a single knitting needle holding means at the lower end, and are configured to be movable in the Z direction when the woven fabric is woven in a multilayer shape by a predetermined thickness. The weaving device according to claim 1 or 2, wherein A plurality of knitting needles which are provided with a Z thread grasping means for grasping the Z thread at the lower end and which are arranged so as to be able to be pulled out in the Z direction, are arranged in alignment with the holding means in the X direction and the Y direction in plan view, and
A double-supported X thread insertion unit capable of forming an X thread insertion path in the X direction above the knitting needle group is removably disposed from the weaving area, and the X thread insertion needle holding the X thread is inserted into the X thread insertion needle. It is arranged on the road so that it can reciprocate in the X direction,
A double-supported Y thread insertion unit capable of forming a Y thread insertion path in the Y direction above the knitting needle group is removably disposed from the weaving area, and the Y thread insertion needle holding the Y thread is inserted into the Y thread insertion needle. It is arranged on the road so that it can reciprocate in the Y direction,
Above the knitting needle group, a beating device is arranged so that the woven fabric woven in the knitting needle group can be beaten, moved in the Z direction and pressed and receded toward the woven fabric side,
In addition, the plurality of knitting needles are vertically held by a single knitting needle holding means at a lower end, and are configured to be movable in the Z direction when the woven fabric is woven in a multilayer shape by a predetermined thickness. it shall be the said weaving device.

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