JPH07216684A - Method for producing cylindrical woven fabric changing in diameters and device therefor - Google Patents

Abstract

PURPOSE:To provide a method for producing a cylindrical woven fabric prevented in the damages and fuzzing of fibers, the generation of irregular weaving, etc., good in quality, and changing in diameters. CONSTITUTION:In a circular loom 8, a cylindrical woven fabric 1 is woven by radially feeding warps 2 from the outside to a diametercontrolling device 11, subjecting the fed warps to opening movements through heddles 9, and subsequently feeding wefts 3 into the openings from a revolution-traveling shuttle 10. Therein, projections 18 are formed on the inner periphery of a rotary ring 14 in which the diameter-controlling device 11 is arranged in a state capable of being slid and rotated on a circular fixed ring 13, and plural rods 17 are circularly and tiltably arranged on the projections 18 at a constant distance so as to form a pseudo circle. The diameter of the pseudo circle can be changed by changing the angles of the rods 17 to the radial direction of the pseudo circle. A weaving opening 12 is formed on the somewhat outer side from the inner periphery of the diameter-controlling device 11, and the diameter of the pseudo circle is changed to change the diameter of the cylindrical woven fabric 1. The speed for taking off the cylindrical woven fabric 1 is changed with the change of its diameter to constantly keep the distance between the weaving opening 12 and the inner periphery of the diameter-controlling device for stabilizing the weaving.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a tubular woven fabric whose diameter varies in the longitudinal direction.

[0002]

2. Description of the Related Art Cylindrical fabrics such as hoses have been conventionally known and widely used. These tubular woven fabrics are usually provided with a warp yarn from the outside in a radial manner by an annular loom, and while the warp yarn is opened, the weft yarn is supplied from a weft yarn supplying device rotating and running in the opening, and the warp yarn and the weft yarn are Is woven into a cylinder.

The tubular woven fabric woven by these annular looms has hitherto been obtained only with a constant diameter.

However, in various industrial fields in recent years, there has been a demand for tubular woven fabrics having different diameters whose diameters change in the length direction. For example, especially in the field of civil engineering, insert a cylindrical bag into soft ground and expand it,
There is a demand for a tubular woven fabric whose diameter changes in the lengthwise direction when, for example, a method of hardening the surrounding ground or forming an anchor for supporting a structure on the ground.

For example, FIG. 1 shows an example of a tubular woven fabric 1 whose diameter changes in the lengthwise direction. The tubular woven fabric 1 is formed by weaving warp threads 2 and weft threads 3 into a tubular shape. The large diameter portion 4 is formed in the central portion, and the upper and lower end portions are the small diameter portions 5, which have different diameters that change in the length direction.

The tubular woven fabric 1 whose diameter changes in the lengthwise direction described in the present specification is not limited to the shape shown in FIG. 1, but has large diameter portions 4 at both ends and a small diameter portion at the center. 5 and various shapes such as one having a large diameter portion 4 at one end and a small diameter portion 5 at the other end, and the portions having different diameters appear regularly or irregularly. , Those having various shapes are also included.

[0007] Several methods of weaving a tubular woven fabric having such a change in diameter have been proposed. Examples thereof include JP-A-58-220847 and JP-A-3-4574.
The method described in Japanese Patent Publication No. 3 is known.

According to the method disclosed in Japanese Patent Laid-Open No. 58-220847, a tubular woven fabric is woven with a warp thread radially supplied from the outside and a weft thread supplied from a shuttle rotating in an opening of the warp thread. At that time, the woven cloth is formed on the surface of the tapered core body, and the diameter of the woven cloth formed on the surface is changed by moving the core body up and down to change the diameter of the tubular woven fabric to be woven. It changes.

Further, the one disclosed in Japanese Patent Laid-Open No. 3-45743 is a tubular woven fabric composed of a warp thread radially supplied from the outside and a weft thread supplied from a shuttle rotating in the opening of the warp thread. In a circular loom to be woven, an inner guide and an outer guide with variable diameters are provided at the center of the circular loom, and a weave is formed between the guides to weave a tubular woven fabric, and the diameter of both guides Is to change the diameter of the tubular woven fabric.

[0010]

However, in the method disclosed in Japanese Patent Laid-Open No. 58-220847, when the weft yarn is woven into the radial warp yarn, the weft is tightened by the tension of the weft yarn so as to follow the surface of the core body. Since the tension of the weft causes the weave to slip easily along the taper of the core body, the diameter of the weave may fluctuate carelessly, and it is difficult to weave a tubular fabric having a desired shape. .

Further, in the case of Japanese Patent Laid-Open No. 3-45743, since the cloth fell is formed in the gap formed between the inner guide and the outer guide, the warp yarn opening is closed at the inner circumference of the outer guide. The weft thread is pushed in by the tension and weaved, and the warp thread and the weft thread are strongly rubbed with each other, and are easily fluffed or damaged.

This state will be described with reference to FIG.
In FIG. 6, 6 is an outer guide and 7 is an inner guide, and the warp yarn 2 and the weft yarn 3 are woven in the gap between them to form the tubular woven fabric 1.

The warp yarn 2 supplied from the outside is bent upward at the inner circumference of the outer guide 6 to form a tubular fabric 1.
2A, when the warp thread 2 is opened, the warp thread 2 is pressed to a position on the lower inner periphery of the outer guide 6 and the opening is closed at that position, as shown in FIG. 2A. It is in a state.

The weft thread 3 inserted to the position closest to the position pushes the warp thread 2 whose opening is closed by the tension of the weft thread 3 and pushes the warp thread 2 into the inside of the inner circumference of the outer guide 6 to cause the weft thread 3 to move as shown in FIG. ) Is woven as shown in FIG.

Therefore, the weft thread 3 forcibly pushes and spreads the warp thread 2 which is strongly pressed against the inner peripheral lower portion of the outer guide 6, and enters the inner side of the outer guide 6 while rubbing the warp thread 2 as well. Since the weft thread 3 is strongly rubbed, the tubular fabric 1 is liable to be fluffed.

In applications of various industrial materials, high-strength fibers such as aramid fibers, glass fibers and carbon fibers are often used in order to increase the strength, and these high-strength fibers are rubbed strongly. In many cases, the single fiber is broken and fluffing occurs particularly violently, so that sufficient strength cannot be obtained.

Further, in this method, it is necessary to provide an inner guide inside the weave so that the diameter of the tubular fabric 1 is not reduced by the tension of the weft thread 3. Since the plurality of members have a mechanism for enlarging and reducing the diameter while overlapping each other, the inner guide itself has to have a considerable size, and the diameter of the tubular woven fabric cannot be sufficiently reduced.

The present invention has been made in view of the above circumstances, and the diameter of the tubular woven fabric is controlled and changed only by the diameter regulating device arranged outside the tubular woven fabric. It is an object of the present invention to provide a method and a device capable of weaving a wide variety of tubular fabrics.

[0019]

According to the method of the present invention, the warp yarn is radially supplied from the outside toward the diameter regulating device, and the weft yarn supplying device is rotatably run in the opening while the warp yarn is being opened. A weaving yarn from the warp yarn and the weft yarn, while weaving a tubular fabric with the warp yarn and the weft yarn and regulating the outer diameter of the tubular fabric with the diameter regulating device. In the method of pulling the warp yarn perpendicularly to the rotational traveling surface of the above, in the warp yarn supplied toward the diameter regulating device, a weft is formed at a position slightly outside the inner circumference of the diameter regulating device and at the same time, It is characterized in that the diameter of the tubular woven fabric to be woven is changed by changing the diameter.

In this method, the take-up speed of the tubular woven fabric is changed in accordance with the change in the diameter of the diameter regulating device, so that the distance between the inner circumference of the diameter regulating device and the cloth slit is always approximately constant. Preferably.

The first device according to the present invention is an opening device which is arranged in an annular shape and causes the warp yarn supplied from the outside to perform an opening movement, and a weft yarn running inside the opening of the warp yarn along the inside of the opening device. In an annular loom comprising a supply device and a diameter regulating device that regulates the outer diameter of a tubular woven fabric provided in the center of the opening device, the diameter regulating device is provided around the center of the opening device. A pseudo rod formed by a plurality of rods which are annularly arranged at a constant interval and arranged at a constant angle with respect to the radial direction, and the angle between the rod and the radial direction is variable. The feature is that the diameter of the circle is variable.

As a more specific structure of the present invention, the diameter regulating device has a pair of rings rotatably coupled to each other on the outer periphery thereof, and one of the rings is provided with a fixed interval of the rod. One end is rotatably attached, and the rope attached to the other end of the rod is pulled through the through holes formed at regular intervals in the other ring to form a pseudo circle with these rods. By rotating the rods relative to each other, the angle between each rod and the radial direction changes, and the diameter of the pseudo circle formed by the rods changes.

A second device according to the present invention is an opening device which is annularly arranged to open the warp yarn supplied from the outside, and a weft yarn running inside the opening of the warp yarn along the inside of the opening device. In an annular loom comprising a supply device and a diameter regulating device that regulates the outer diameter of a tubular woven fabric provided in the center of the opening device, the diameter regulating device is provided around the center of the opening device. The wedge-shaped members are annularly arranged at regular intervals, and the wedge-shaped members are slidably coupled to the adjacent wedge-shaped members in order to form an annular shape, and a pseudo circle is formed inside the wedge-shaped members to adjoin the wedge-shaped members. It is characterized in that the diameter of the pseudo circle is made variable by sliding it on the wedge-shaped member.

In the present invention, the diameter regulating device is
A ring body is provided on the outer periphery of the ring body, and a plurality of arms are rotatably attached at regular intervals of the ring body, and the wedge-shaped members are rotatably attached to the tips of the arms. It is possible to make the diameters of the pseudo circles formed by the plurality of wedge-shaped members variable by causing the plurality of wedge-shaped members to slide with each other by pivoting the wedge-shaped members.

As a more specific structure, a plurality of wire rods each having a spring property are formed by a pair of rings in which the ring bodies are rotatably coupled to each other, and both ends of the wire rods are arranged at regular intervals of the both rings. By attaching the plurality of arms to one ring, urging the ends of the arms outward by spring means, supporting the outward bias on the wire rod, and rotating the two rings with respect to each other. There is a structure in which the arm is rotated via the wire rod so that the diameter of the pseudo circle formed by the wedge-shaped member is variable.

Further, a third device of the present invention is an opening device which is arranged in an annular shape and causes the warp yarn supplied from the outside to perform an opening movement, and a weft yarn running inside the opening of the warp yarn along the inside of the opening device. In an annular loom comprising a supply device and a diameter regulating device that regulates the outer diameter of a tubular woven fabric provided in the center of the opening device, the diameter regulating device includes a curved leaf spring, A mechanism for changing the distance between both ends of the leaf spring, forming a pseudo-circle by the inner surface of the curve of the leaf spring, and changing the distance between the both ends of the leaf spring. It is characterized in that the radius of the pseudo circle is made variable by changing the curvature.

In the present invention, the diameter regulating device is
It has a pair of rings rotatably coupled to its outer periphery, and both ends of the leaf spring are attached to both rings, respectively, and the both rings are relatively rotated to thereby cause a gap between both ends of the leaf spring. The distance can be changed.

In this case, both half portions of the leaf spring are staggered in the widthwise direction at the central portion of the leaf spring, and one half portion and the other half portion of the leaf spring intersect each other. Is preferred.

In the leaf spring, a plurality of leaf springs are provided in an annular shape, both ends of each leaf spring are attached to the ring at equal intervals, and the central portions of the leaf springs are combined to form a pseudo circle. Can be one.

It is also possible that a single leaf spring has a loop formed at the center thereof and the inner surface of the loop forms a pseudo circle.

Further, in the third device, the diameter regulating device has a pair of rings rotatably coupled to the outer periphery thereof, and an arm is rotatably attached to one of the rings. One end of the leaf spring is attached to the other ring, the other end is attached to the tip of the arm, the other end of the leaf spring is positioned at a part of the pseudo circle, and the both rings are relatively rotated. By changing the distance between the both ends of the leaf spring, changing the curvature of the leaf spring to change the diameter of the pseudo circle, and rotating the arm with respect to the one ring, The position of the circle can be adjustable.

In this case, a plurality of leaf springs are provided in an annular shape, one end of each leaf spring is attached to the other ring at equal intervals, and the other end of the leaf spring abuts the inner surface of the curve of the adjacent leaf spring. It may be attached to the tip of the arm at a contact position, and the other ends of the plurality of leaf springs may be combined to form a pseudo circle.

Further, a single leaf spring is attached to the other ring at one end thereof, forms the loop at the other end thereof, and is attached to the tip of the arm at the inner end thereof, and the inner surface of the loop is attached. A pseudo circle may be formed.

Further, in the present invention, one end of each arm is rotatably mounted at regular intervals of the one ring, each arm is urged to rotate outward, and at the tip of each arm. It is preferable that each of them has a pressing piece that comes into contact with the inner surface of the curved surface of the leaf spring.

[0035]

FIG. 4 shows a state in which the method of the present invention is carried out. Reference numeral 8 denotes an annular loom, and the warp threads 2 are radially supplied from the outside toward the center and are opened by a heddle 9 as an opening device arranged in an annular shape.

Reference numeral 10 denotes a shuttle which serves as a weft thread supplying device that rotates and runs in the opening of the warp thread 2. The weft thread 3 supplied from the shuttle 10 and the warp thread 2 form a tubular woven fabric 1.

Reference numeral 11 denotes an annular diameter regulating device which weaves the tubular woven fabric 1 while regulating the outer diameter by the diameter regulating device 11, and the woven tubular woven fabric 1 is perpendicular to the annular loom 8 (see the drawing). In (above).

In the present invention, as shown in FIG. 3, the weave 12 of the tubular fabric 1 is formed at a position slightly outside the inner circumference of the diameter regulating device 11. The warp threads 2 supplied from the outside reach the cloth fell 12, and the weft threads 3 are driven in the cloth fell 12 so that the tubular woven fabric 1 is woven.

The tubular woven fabric 1 woven by the warp yarns 2 and the weft yarns 3 at the weft 12 further inwards, is bent upward by the diameter regulating device 11, and is taken up.

Then, the diameter regulating device 1 is provided by appropriate means.
The tubular woven fabric 1 to be woven by changing the diameter of No. 1 to change the position of the cloth fell 12 to change its diameter.
Change the diameter of.

The take-up speed of the tubular fabric 1 is the same as that of the cloth fell 1
It is preferable to adjust the take-up speed so that the cloth fell 12 is always at a substantially constant position with respect to the diameter regulating device 11 in conjunction with the position of 2.

When the diameter of the diameter regulating device 11 is changed, the take-up speed of the tubular woven fabric 1 is changed according to the change of the diameter, and the distance t between the inner circumference of the diameter regulating device 11 and the weft 12 is changed. It is desirable that the value of is always constant.

In the method of the present invention, the tubular woven fabric 1 is woven by the diameter of the weave 12, and the tubular woven fabric 1 is passed through the inside of the diameter regulating device 11 in a slightly squeezed state.

Therefore, it is preferable that the distance t between the inner circumference of the diameter regulating device 11 and the cloth fell 12 is as small as possible.
It is preferable to be 10% or less of the minimum diameter of. However, it is not preferable that the cloth fell 12 approaches the inner circumference of the diameter regulating device 11 excessively, and it is preferable to secure a distance of at least about twice the driving pitch of the weft threads 3 in the tubular fabric 1.

Next, an embodiment of the device of the present invention will be described. 5 to 7 show an embodiment of the first device of the present invention, FIG. 5 is a central longitudinal sectional view of the device of the present invention, and FIG. 6 is a plan view of the diameter regulating device 11 in the device. Figure,
FIG. 7 is an enlarged plan view showing a state in which the diameter of the tubular woven fabric 1 to be woven is enlarged and reduced.

In the apparatus of the present invention, the diameter regulating device 11 is
A fixing ring 13 is provided on the outer circumference thereof, and a rotating ring 14 is fitted to the fixing ring 13.

A rolling wheel 15 provided on the outer circumference of the rotating ring 14 rolls in a groove 16 formed in the inner circumference of the fixed ring 13, and the rotating ring 14 is formed on the outer circumference of the upper portion thereof. Drive gear 24 meshed with the formed external teeth 23
Thus, it can rotate with respect to the fixed ring 13.

Reference numeral 17 denotes a plurality of rods, and the base end portions of the rods 17 are bent upward in a substantially L shape, and are fixed to the protrusions 18 formed on the inner circumference of the rotary ring 14. It is fastened rotatably at intervals.

A cord 19 is attached to the tip of each rod 17, and the cord 19 is inserted into through holes 20 formed at regular intervals in the fixing ring 13 and passed through the healds 9. The weight 2 is pulled out from the annular loom 8
The direction of the rod 17 is controlled by applying tension by 1 to pull.

Thus, each rod 17 forms a constant angle α with respect to the radial direction of the rotary ring 14 from the position where it is attached to the rotary ring 14, and extends slightly downward with respect to the horizontal direction. .

Since the plurality of rods 17 attached to the rotating ring 14 at regular intervals all extend at the same angle α, the pseudo circles 22 are formed inside the rotating ring 14 by the rods 17 intersecting each other. The diameter of the tubular fabric 1 is controlled by the inner circumference of the pseudo circle 22.

By rotating the rotating ring 14 with respect to the fixed ring 13, the mounting position of each rod 17 with respect to the rotating ring 14 changes, and the angle α of the rod 17 extending from the mounting position toward the through hole 20 changes. Change,
The diameter of the pseudo circle 22 formed by the rod 17 can be changed.

That is, in FIG. 7, by rotating the rotating ring 14 counterclockwise with respect to the fixed ring 13 as shown by an arrow a, the rod 17 approaches the center of the rotating ring 14 with respect to the ridge 18. Rotate in the direction 22
As shown in a, the diameter of the pseudo circle 22 is reduced.

By rotating the rotating ring 14 clockwise with respect to the fixed ring 13 as shown by the arrow b, the rod 17 moves toward the outer circumference of the rotating ring 14, and as shown by 22b, the pseudo circle 22 Diameter increases.

Next, the second device will be described. 8 to 12 show the diameter regulating device 11 in the second device of the present invention.
8 is a plan view thereof, and FIGS. 9 and 10 are enlarged sectional views taken along line IX-IX and XX in FIG.

In this embodiment, 13 is a fixed ring, 14 is a rotating ring, and the rotating ring 14 is fixed by rolling the rolling wheel 15 along the groove 16 formed in the fixed ring 13. It is rotatable with respect to 13. Then, the rotary ring 14 is rotationally driven by the drive gear 24 meshed with the external teeth 23 formed on the rotary ring 14.

Reference numeral 25 denotes a plurality of arms, each arm 2
The base portion of 5 is rotatably supported on a support shaft 26 that is planted on the upper surface of the fixed ring 13 at regular intervals so that it can rotate in a horizontal plane. It is installed freely.

The rotary shaft 27 and the arm 2 adjacent to the arm 25 to which the rotary shaft 27 is attached
5, a spring 28 is provided between the supporting shaft 26 and the supporting shaft 26.
Is interposed and urges the arm 25 outward.

A wire 29 such as a wire is stretched between the inner lower portions of the fixed ring 13 and the rotary ring 14. The wire 29 is in contact with the outside of the lower part of the rotary shaft 27, and supports the arm 25 to rotate outward by a spring 28. The wire 29 and the spring 28 keep the arm 25 at a fixed position. It is designed to hold.

A substantially wedge-shaped diameter regulating member 30 is attached to the lower portion of the rotary shaft 27.

As shown in FIG. 11, the diameter regulating member 30 includes a substrate 31 attached to the rotary shaft 27 and a substrate 31.
1 and a substantially wedge-shaped horizontal plate 32 protruding from the side surface,
On the surface of the substrate 31 opposite to the surface on which the horizontal plate 32 is provided, a sliding groove 33 is formed in which the end edge of the horizontal plate 32 of the adjacent diameter regulating member 30 fits.

A groove 34 is formed on the upper surface of the end portion of the horizontal plate 32, and is fixed to the upper portion of the sliding groove 33 when fitted in the sliding groove 33 of the adjacent diameter regulating member 30. The pressing plate 35 is fitted in the groove 34, and the diameter regulating members 30 adjacent to each other are slidable with each other at the edge of the horizontal plate 32 and the sliding groove 33.

Thus, as shown in FIG. 8, the edge of the horizontal plate 32 between the adjacent diameter regulating members 30 is the substrate 31 in sequence.
The pseudo circle 22 is formed by the inner edges of the front end portions of the plurality of diameter regulating members 30 by fitting in the sliding grooves 33.

When the rotary ring 14 rotates clockwise with respect to the fixed ring 13 in FIG. 8, the wire rod 29 approaches the center of the rotary ring 14 with a small radius of curvature, and the arm 25 resists the elasticity of the spring 28. Then, the support shaft 26 is rotated clockwise as an axis.

Along with this, the diameter regulating member 30 rotates with respect to the arm 25 to which it is attached, and slides in a direction in which the contact length between the diameter regulating member 30 and the adjacent diameter regulating member 30 increases. At 12, it is biased inward as shown at 30a and the pseudo-circle 22 has a reduced diameter as shown at 22a.

On the contrary, when the rotary ring 14 rotates counterclockwise, the wire 29 is biased outward while the radius of curvature expands, and the arm 25 is counterclockwise about the support shaft 26 by the elastic force of the spring 28. Turn to.

As a result, the diameter regulating member 30 is rotated with respect to the arm 25 to which the diameter regulating member 30 is attached, and slides in a direction in which the contact length between the diameter regulating member 30 and the adjacent diameter regulating member 30 becomes smaller. At 30b, it is biased outwardly and the pseudo-circle 22 expands in diameter as shown at 22b.

Next, FIGS. 13 to 15 show an embodiment of the diameter regulating device 11 in the third device of the present invention. FIG. 13 is a plan view thereof, and FIG. 14 is an enlarged central longitudinal section of a main part. FIG. 15 is a plan view, and FIG. 15 is a perspective view showing a combined state of a large number of leaf springs in this embodiment.

In this embodiment, 13 is a fixed ring, 14 is a rotating ring, and the rotating ring 14 is fixed by the rolling wheels 15 rolling along the grooves 16 formed in the fixed ring 13. It is rotatable with respect to 13. Then, the rotary ring 14 is rotationally driven by the drive gear 24 meshed with the external teeth 23 formed on the rotary ring 14.

36 is a plurality of leaf springs, each leaf spring 3
Each of 6 has a substantially U-shaped shape with its central portion curved in a substantially arc shape, and both ends thereof have the fixing ring 13 respectively.
And attached to the rotating ring 14 at regular intervals.

Further, each leaf spring 36 has a step portion 38 formed in the center thereof, and both half portions are connected in a staggered manner in the width direction. As shown in FIG.
By intersecting one half of 6 with the other half of the other leaf spring 36, all the leaf springs 36 are arranged in the same plane.

Reference numeral 25 is a plurality of arms, and the base of each arm 25 is pivotally supported by a support shaft 26 planted at fixed intervals on the upper surface of the fixed ring 13 so as to be rotatable in a horizontal plane. A rotary shaft 27 is rotatably attached to the tip of the arm 25.

A spring 28 is interposed between the rotary shaft 27 and a support shaft 26 supporting the arm 25 adjacent to the arm 25 to which the rotary shaft 27 is attached, and urges the arm 25 outward. is doing.

A pressing piece 37 is attached to the lower end of each rotary shaft 27, and the pressing piece 37 abuts on the inner side surface and the upper edge of the curve of the leaf spring 36, so that the leaf spring 36 moves outward. The leaf spring 36 is pushed upward by the tension of the warp thread 2 and pushed up by the tension of the warp thread 2.

Thus, in the present invention, a plurality of leaf springs 3
While 6 are combined in the stepped portion 38, they are sequentially overlapped at the central portion thereof, and the elastic force of the leaf spring 36 itself acts to expand outward, so that the leaf springs 36
The central part of the circle has a circular arc, and the inner surface of the
Is formed.

By pressing the inside of the leaf spring 36 with the pressing piece 37 so as to expand it, the pseudo circle 22 can be expanded more smoothly.

Then, in FIG. 13, when the rotary ring 14 rotates clockwise with respect to the fixed ring 13,
Both ends of the leaf spring 36 approach each other and the central portion approaches the center of the fixed ring 13, and the radius of curvature thereof decreases, so that the pseudo circle 22 reduces its diameter.

When the rotating ring 14 rotates counterclockwise with respect to the fixed ring 13, the distance between both ends of the leaf spring 36 increases, the central portion moves outward, and the leaf spring 36 itself moves. The radius of curvature of the leaf spring 36 is expanded by the spring elasticity and the pressing force of the pressing piece 37, and the pseudo circle 22 expands its diameter.

16 and 17 show another embodiment of the diameter regulating device 11 in the third device of the present invention. FIG. 16 is a plan view thereof, and FIG. 17 is a leaf spring in this embodiment. FIG. 36 is a perspective view showing 36.

In this embodiment, a single leaf spring 36 is provided, and the leaf spring 36 is bent and assembled at a step portion 38 to form a loop at the central portion.
Both ends of the leaf spring 36 are attached to the fixed ring 13 and the rotary ring 14, respectively.

In this embodiment, the loop is substantially circular due to the spring elasticity of the leaf spring 36 itself, and the inner surface thereof forms the pseudo circle 22. Further, by pressing the inner surface of the loop with the pressing piece 37 to expand it, the pseudo circle 22
Becomes closer to a circular shape, and the diameter of the pseudo circle 22 can be expanded and reduced more smoothly, and by pressing the upper edge portion of the leaf spring 36 with the pressing piece 37, the tension of the warp thread 2 causes the leaf spring 36 to be held. It is possible to prevent climbing.

FIG. 18, FIG. 19 and FIG. 20 show still another embodiment of the diameter regulating device 11 in the third device of the present invention. FIG. 18 is its plan view and FIG. It is a perspective view which shows the leaf spring 36 in an Example.

In this embodiment, the leaf spring 36 is unitary, one end of which is attached to the rotating ring 14, and the other end of which has the end wound inward to form a loop. The inner surface of the loop forms a pseudo circle 22.

At the other end of the leaf spring 36, that is, at the upper edge of the inner end of the loop, a folded-back portion 39 is formed on the outside as shown in FIG. 20, and the folded-back portion 39 contacts the other end on the outside. The plate spring 36 is held slidably.

Reference numeral 40 denotes a support arm having one end rotatably attached to the fixed ring 13, and a pin 41 protrudingly provided on the upper surface of the folded portion 39 is rotatably attached to the tip of the support arm.

Arms 25 are rotatably attached to the fixed ring 13 at regular intervals, and each arm 25 is biased outward by a spring 28.
A pressing piece 37 attached to the tip of the plate 5 contacts the inner surface of the loop of the leaf spring 36 and presses it outward. The support arm 40 occupies one position of the plurality of arms 25.

In this embodiment, as the rotary ring 14 rotates clockwise with respect to the fixed ring 13 in FIG. 18, the distance between both ends of the leaf spring 36 increases, and the loop is tightened to approach the center. With that, the radius of curvature becomes smaller, and the diameter of the pseudo circle 22 becomes smaller.

Further, since the rotary ring 14 rotates counterclockwise with respect to the fixed ring 13, the distance between the both ends of the leaf spring 36 becomes small, and the spring elasticity of the leaf spring 36 itself and the pressing force of the pressing piece 37 cause it. The loop is relaxed and the radius of curvature is expanded, and the pseudo circle 22 expands its diameter.

FIG. 21 shows a leaf spring 3 according to still another embodiment of the diameter regulating device 11 in the third device of the present invention.
6 is a perspective view of FIG.

In this embodiment, a plurality of leaf springs 36 are used, and one end of each leaf spring 36 has a rotary ring 14.
Installed on.

The other end of each leaf spring 36 is located inside the curve of the adjacent leaf spring 36, is connected to the adjacent leaf spring 36 in the structure as shown in FIG. It is attached to the tip, and the other ends of the plurality of leaf springs 36 are combined to form a pseudo circle 22.

As in the previous embodiment, the fixing ring 13
The leaf spring 36 is pressed outward by the pressing piece 37 attached to the tip of the plurality of arms 25 rotatably attached to the support arm 40. Each occupies one position.

In this embodiment, by rotating the rotary ring 14 with respect to the fixed ring 13, the distance between the both ends of the leaf spring 36 changes, and the elasticity of the leaf spring 36 itself and the pushing by the pushing piece 37. Due to the pressure and the mutual action of the plurality of leaf springs 36, the radius of curvature of each leaf spring 36 changes and the diameter of the pseudo circle 22 changes in size while maintaining the shape of the pseudo circle 22.

[0094]

In the method of the present invention, as shown in FIG.
As shown in FIG. 5, the warp yarns 2 are radially supplied from the outside toward the diameter regulating device 11, and the diameter of the diameter regulating device 11 is changed, and the warp yarns 2 are located at a position slightly outside the inner circumference of the diameter regulating device 11. Since the fabric 12 is formed, the warp threads 2 are
And the weft 3 is woven toward the weft 12 thereof.

Therefore, since the weft thread 3 enters the position of the weft 12, the warp thread 2 is not strongly spread or rubbed strongly, and the warp thread 2 and the weft thread 3 are woven very smoothly and are not damaged. There is no fluff.

By changing the diameter of the diameter regulating device 11, the diameter of the cloth fell 12 can be changed and the diameter of the tubular woven fabric 1 to be woven can be changed to a large or small size, and the diameter changes in the length direction. The tubular woven fabric 1 can be woven.

Since a complicated inner guide is not inserted inside the tubular woven fabric 1 woven as in the conventional example, the diameter of the tubular woven fabric 1 is not restricted by the inner guide. The tubular woven fabric 1 having a sufficiently small diameter can be woven, and the range of change in the diameter of the tubular woven fabric 1 can be increased.

Further, in the device of the present invention, a pseudo circle 22 is formed by arranging one or more members annularly in the diameter regulating device 11, and the weft 12 is formed on the basis of the pseudo circle 22 to form a tubular shape. The woven fabric 1 can be woven.

By changing the diameter of the diameter regulating device 11, the diameter of the pseudo circle 22 is changed to change the diameter of the cloth fell 12, and the tubular woven fabric 1 whose diameter changes in the length direction is woven. It can be done.

Further, in the apparatus of the present invention, the lower portion of the pseudo circle 22 is substantially in the horizontal plane, and forms a smooth guide surface for the warp thread 2 supplied from the outside. Therefore, the warp yarns 2 are smoothly woven with the weft yarns 3 at the circular weave 12, and defects such as uneven weaving do not occur.

In particular, in the third device of the present invention, the pseudo circle 2 having a simple structure and an extremely smooth and close to perfect circle 2
2 to form a smooth guide surface for the warp yarn 2, the weft yarn 3, and the woven tubular fabric 1 as well, and the diameter of the pseudo circle 22 can be smoothly changed by the deformation of the leaf spring 36. As a result, extremely high quality products can be woven.

[Brief description of drawings]

FIG. 1 is a perspective view of a tubular woven fabric 1 woven according to the present invention.

FIG. 2 is a cross-sectional view of a main portion showing a state of a cloth fell when weaving the tubular woven fabric 1 by a conventional method.

FIG. 3 is a cross-sectional view of a main part showing a state of a cloth fell 12 when weaving the tubular woven fabric 1 by the method of the present invention.

FIG. 4 is a central longitudinal sectional view showing a state in which a tubular woven fabric 1 is woven by the method of the present invention.

FIG. 5 is a central longitudinal sectional view showing an embodiment of the first device of the present invention.

FIG. 6 is a plan view showing an embodiment of the diameter regulating device 11 of the first device of the present invention.

FIG. 7 is an enlarged plan view of the main part showing a state in which the diameter of the pseudo circle 22 is changed by the first device of the present invention.

FIG. 8 is a plan view showing an embodiment of the diameter regulating device 11 of the second device of the present invention.

9 is an enlarged sectional view of IX-IX portion in FIG.

FIG. 10 is an enlarged cross-sectional view of XX section in FIG.

FIG. 11 is a perspective view of the diameter regulating member 30 in the embodiment of FIG. 8, and FIGS. 11A and 11B are perspective views from different directions.

FIG. 12 is an enlarged plan view of the main part showing a state in which the diameter of the pseudo circle 22 is changed according to the embodiment of FIG.

FIG. 13 is a plan view showing an embodiment of the diameter regulating device 11 of the third device of the present invention.

14 is an enlarged cross-sectional view of XIV-XIV portion in FIG.

15 is a plurality of leaf springs 36 in the embodiment of FIG.
Enlarged perspective view showing the combined state

FIG. 16 is a view showing the diameter regulating device 11 of the third device of the present invention,
Plan view showing another embodiment

17 is an enlarged perspective view of the leaf spring 36 in the embodiment of FIG.

FIG. 18 is a diagram showing the diameter regulating device 11 of the third device of the present invention,
Plan view showing still another embodiment

19 is an enlarged perspective view of the leaf spring 36 in the embodiment of FIG.

20 is an enlarged cross-sectional view taken along line XX-XX in FIG.

FIG. 21 is a diagram showing the diameter regulating device 11 of the third device of the present invention,
A perspective view showing a state in which a plurality of leaf springs 36 in still another embodiment are combined.

[Explanation of symbols]

 1 tubular woven fabric 2 warp yarn 3 weft yarn 8 annular loom 9 heald (opening device) 10 shuttle (weft yarn feeding device) 11 diameter regulating device 12 weave 13 fixing ring 14 rotating ring 17 rod 19 rope 20 through hole 22 pseudo circle 25 arm 28 spring 29 wire rod 30 diameter regulation member 36 leaf spring 37 pressing piece 40 support arm

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junji Niwa 59-19, Yodoharamachi, Yodoharamachi, Takatsuki City, Osaka Prefecture

Claims (16)

[Claims] 1. A weft supply device (10) that radially feeds a warp yarn (2) from the outside toward a diameter regulating device (11) and rotationally travels in the opening while causing the warp yarn (2) to make an opening movement. ), Weft yarn (3) is supplied, and the warp yarn (2) and the weft yarn (3) weave a tubular woven fabric (1), and the outer diameter of the tubular woven fabric (1) is adjusted by the diameter regulating device ( 1
In the method of pulling the woven tubular fabric (1) perpendicularly to the rotational traveling surface of the weft yarn feeding device (10) while regulating it by 1), it is fed toward the diameter regulating device (11). The warp yarn (2) is woven by forming a weft (12) at a position slightly outside the inner circumference of the diameter regulating device (11) and changing the diameter of the diameter regulating device (11). A method for producing a tubular fabric having a variable diameter, characterized in that the diameter of the tubular fabric (1) is changed. 2. The take-up speed of the tubular fabric (1) is changed according to the change of the diameter of the diameter regulating device (11) so that the inner circumference of the diameter regulating device (11) and the cloth fell (12) are The method for producing a tubular woven fabric with variable diameter according to claim 1, characterized in that the distance is always substantially constant. 3. An opening device (9) which is arranged annularly and causes an opening movement of a warp thread (2) supplied from the outside, and inside the opening of the warp thread (2) along the inside of the opening device (9). Weft supply device (10) traveling in the direction of the weft and a tubular woven fabric (1) woven at the center of the opening device (9).
A circular loom (8) comprising a diameter regulating device (11) for regulating the outer diameter of the opening device (11), wherein the diameter regulating device (11) annularly and radially around the center of the shedding device (9) at regular intervals. A plurality of rods (17) arranged at a certain angle with respect to each other, and the pseudo angle formed by the plurality of rods (17) by varying the angle between the rod (17) and the radial direction. Apparatus for manufacturing tubular fabrics of varying diameter, characterized in that the diameter of the circle (22) is variable 4. A pair of rings (13, 1) on which the diameter regulating device (11) is rotatably coupled to each other on the outer periphery thereof.
4), one end of the rod (17) is rotatably attached at regular intervals of one ring (14), and the cord (19) attached to the other end of the rod (17) is attached. Through holes (2) formed at regular intervals in the other ring (13)
0) to pull these rods (17) to form a pseudo-circle (22) and rotate both rings (13, 14) relative to each other to change the angle between each rod (17) and the radial direction. Device for producing tubular fabrics of varying diameter according to claim 3, characterized in that the diameter of the pseudo-circle (22) formed by the rod (17) varies. 5. An opening device (9) which is arranged annularly and causes the warp yarn (2) supplied from the outside to perform an opening movement, and inside the opening of the warp yarn (2) along the inside of the opening device (9). Weft supply device (10) traveling in the direction of the weft and a tubular woven fabric (1) woven at the center of the opening device (9).
An annular loom (8) comprising a diameter regulating device (11) for regulating the outer diameter of the plurality of the diameter regulating devices (11) arranged in an annular shape at regular intervals around the center of the shedding device (9). Of the diameter regulating member (30) having a substantially wedge shape, and the diameter regulating member (30) is successively adjacent to the diameter regulating member (30).
And a pseudo circle (22) is formed on the inner side thereof so as to be slidably coupled to the diameter regulating member (30) so that the diameter regulating member (30) slides with respect to the adjacent diameter regulating member (30). Apparatus for manufacturing tubular woven fabric with varying diameter, characterized in that the diameter of the pseudo circle (22) is variable 6. The diameter regulating device (11) has a ring body (13, 14) on its outer periphery, and the ring body (13, 14).
14) a plurality of arms (25) are rotatably attached at regular intervals, and the diameter regulating member (30) is rotatably attached to the tip of the arm (25).
By rotating 5) with respect to the ring bodies (13, 14), the plurality of diameter regulating members (30) slide with each other, and the pseudo circle (formed by the plurality of diameter regulating members (30) ( 22) The diameter of 22) is variable.
For manufacturing tubular woven fabrics with variable diameter 7. A plurality of wire rods (29) having a spring property, wherein the ring bodies (13, 14) are composed of a pair of rings (13, 14) rotatably connected to each other, and both ends of the wire rods (29) are connected to each other. The rings (13, 14) are mounted at regular intervals, and one of the rings (13) has the plurality of arms (2).
5) is attached, the tip of the arm (25) is urged outward by the spring means (28), and the outward bias is supported by the wire (29).
By rotating the wire rods (4) relative to each other, the arm (25) is rotated through the wire (29), and thus the pseudo circle (22) formed by the diameter regulating member (30).
7. The apparatus for manufacturing a tubular woven fabric having a variable diameter according to claim 6, wherein the diameter of the woven fabric is variable. 8. An opening device (9) arranged in an annular shape for opening movement of a warp thread (2) supplied from the outside, and inside the opening of the warp thread (2) along the inside of the opening device (9). Weft supply device (10) traveling in the direction of the weft and a tubular woven fabric (1) woven at the center of the opening device (9).
In a circular loom (8) comprising a diameter regulating device (11) for regulating the outer diameter of the leaf spring, the diameter regulating device (11) is provided between a curved leaf spring (36) and both ends of the leaf spring (36). And a mechanism for changing the distance, wherein a pseudo circle (22) is formed by the curved inner surface of the leaf spring (36) and the distance between both ends of the leaf spring (36) is changed. (36) The curvature of the curve is changed so that the diameter of the pseudo circle (22) is variable, and the manufacturing apparatus for a tubular woven fabric with a variable diameter. 9. The diameter regulating device (1) according to claim 8,
1) has a pair of rings (13, 14) rotatably coupled to the outer periphery thereof, and both ends of the leaf spring (36) are attached to both rings (13, 14). An apparatus for manufacturing a tubular woven fabric having a variable diameter, characterized in that a distance between both ends of the leaf spring (36) is changed by relatively rotating the rings (13, 14). 10. Both half portions of the leaf spring (36) are staggered in the width direction at the central portion thereof, and one half portion and the other half portion of the leaf spring (36) are connected to each other. 10. The apparatus for manufacturing a tubular woven fabric with a variable diameter according to claim 9, wherein the tubular woven fabrics intersect with each other. 11. The leaf springs (36) are provided in a plurality of annular shapes, and both ends of each leaf spring (36) are attached to the rings (13, 14) at equal intervals, respectively. Device for manufacturing tubular fabrics with variable diameter according to claim 9 or 10, characterized in that the central parts of the are combined to form a pseudo circle (22). 12. A single leaf spring (36) forms a loop in its central part, the inner surface of said loop forming a quasi circle (22). For manufacturing tubular woven fabrics with variable diameter 13. The diameter regulating device (11) according to claim 8, having a pair of rings (13, 14) rotatably coupled to the outer periphery thereof, and one of the rings (13). A support arm (40) is rotatably attached to the plate spring (36), one end of the leaf spring (36) is attached to the other ring (14), and the other end is attached to the tip of the support arm (40). 36) the other end of the pseudo circle (2
Positioned in a part of 2), both rings (13, 14)
By relatively rotating the leaf spring (36)
The radius of the pseudo circle (22) by changing the curvature of the leaf spring (36) by changing the distance between both ends of the support spring (36),
3) A device for manufacturing a tubular woven fabric having a variable diameter, wherein the position of the pseudo circle (22) can be adjusted by rotating the woven fabric with respect to 3). 14. A plurality of the leaf springs (36) are provided in an annular shape, and one end of each leaf spring (36) has the other ring (1).
4) at equal intervals, and the other end of the leaf spring (36) is attached to the tip of the support arm (40) at a position where the other end of the leaf spring (36) abuts the inner surface of the curve of the adjacent leaf spring (36), 14. The leaf springs (36) in combination with each other at the other end to form a pseudo circle (22).
For manufacturing tubular woven fabrics with variable diameter 15. A single leaf spring (36) is attached at one end to the other ring (14), the other end forming a loop and at its inner end of the support arm (40). Attached to the tip, the inner surface of the loop forms a pseudo circle (22),
Apparatus for manufacturing a tubular woven fabric according to claim 13, the diameter of which varies. 16. One of the arms (25) is rotatably attached to the one ring (13) at regular intervals, and the arms (25) are urged to rotate outward. , A pressing piece (37) at the tip of each arm (25), which abuts against the curved inner surface of the leaf spring (36).
Are provided.
2, 13, 14 or 15, the manufacturing apparatus for a tubular woven fabric having a variable diameter