JPH0551863A - Production of wide angle woven fabric and apparatus therefor - Google Patents

Abstract

PURPOSE:To provide a process for the production of wide angle woven fabric and apparatus therefor capable of producing wide angle woven fabric from woven fabric composed of perpendicularly crossing warps and wefts such as plain weave fabric, having simplified structure compared with conventional production apparatus, producible at a low cost and necessitating small installation space. CONSTITUTION:The transfer apparatus 2 for woven fabric A is composed of a pair of endless tenter chains 22, 23 placed in the direction of the width of the woven fabric interposing a distance therebetween and driven in the same direction at the same speed. The side edges of the woven fabric A are held with pin members 47 of the tenter chains. A tenter chain 23 is made to be longer than the other tenter chain 22 and the part near the middle of the chains is guided with a guide sprocket 32 vertically movable with a cylinder apparatus 33. The tenter chain 23 is made to be freely movable in the direction of the width of the woven fabric A relative to the other tenter chain 22.

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 wide-angle woven cloth for use as a canvas loaded in a rubber belt in a laminated manner. The wide-angle woven fabric means a woven fabric in which the warp and the weft intersect at an angle larger than 90 °.

[0002]

2. Description of the Related Art In order to improve the flexibility of the rubber belt, the canvas of the above-mentioned rubber belt has a wide angle (usually 100 to 120) as shown in FIG.
Woven fabric A ′ of about (°) is generally used.

Conventionally, as a method for producing a wide-angle woven fabric of this kind, as described in Japanese Patent Publication No. Sho 49-12153, a woven fabric A (FIG. 6) in which a warp A1 and a weft A2 intersect at 90 °.
While carrying the yarn in parallel with the warp yarn A1, the direction of the weft yarn A2 is changed from the middle while changing the direction of the warp yarn A1 by a predetermined angle, so that the crossing angle of the warp yarn A1 and the weft yarn A2 is 90 degrees.
There has been proposed a method of adhering the intersecting portions of both yarns by heat treatment or resin treatment at an angle (wide angle) larger than °.

Further, as an apparatus for producing a wide-angle woven cloth by the same production method, Japanese Patent Publication Nos. 51-42239, 53-37464 and 57-4865 are available.
The device described in Japanese Patent No. 9 has been proposed.

[0005]

The above-mentioned conventional manufacturing method is very advantageous in that a wide-angle woven cloth can be manufactured from a woven cloth such as a plain weave and a twill weave in which warps and wefts intersect at right angles.
On the other hand, it is necessary to change only the direction of the warp while holding many wefts during the process of conveying the woven fabric so that their directions do not change. There is a problem that the size is increased to require a large installation space and the equipment cost is increased.

The present invention has been made in view of the above points, and it is possible to manufacture a wide-angle woven cloth from a woven cloth such as a plain weave in which the warp and the weft intersect at a right angle, and the structure is simpler than that of the conventional manufacturing apparatus described above. It is an object of the present invention to provide a method for manufacturing a wide-angle woven cloth and a manufacturing apparatus therefor, which are reduced in cost, equipment cost is reduced, and installation space is small.

[0007]

In order to achieve the above object, the manufacturing method of the present invention comprises: a) holding both side edges of a woven fabric in which warps and wefts are orthogonal to each other in the moving direction; and b) weaving. Set the movement path of one side edge of the cloth to be linear, while set the movement path of the other side edge to be curved such as peaks and valleys, and then set both side edges of the woven cloth at the same speed. While moving the woven cloth, the other side edge is gradually moved closer to the one side edge so that the weft thread crosses the warp thread at an angle larger than 90 ° so that the weft thread crosses the other side. After the relative position is shifted in the moving direction, c) the intersection of the warp yarn and the weft yarn of the woven fabric is bonded.

Further, the manufacturing apparatus of the present invention includes: A) a feeding device for a woven fabric in which the warp and the weft wound in a roll form are orthogonal to each other; and B) the woven fabric is arranged at an interval in the width direction and is the same. It consists of a pair of endless tenter chains or tenter belts, each of which is driven in the same direction at the same speed and has a gripping means for gripping the side edge of the woven fabric, one of the tenter chains or tenter belts being longer than the other Conveyance of a woven fabric in which the vicinity of a part is guided by a sprocket or pulley that can be vertically moved up and down, and one tenter chain or tenter belt is movable with respect to the other tenter chain or tenter belt in the width direction of the woven fabric. A device, a woven fabric adhesion treatment device, a woven fabric drying device,
And a winding device for the woven cloth.

Further, according to a third aspect of the present invention, a plurality of pin members are used for the holding means of the tenter chain or the tenter belt, and the elastic body is provided along both side edges of the woven fabric held by the pin members. It is more preferable that the pressing belt provided with the pressing member is provided so that it can travel at the same speed as each tenter chain or tenter belt.

[0010]

By the manufacturing method of the present invention having the above construction, the woven cloth in which the warp and the weft intersect at 90 ° (see FIG. 6)
Therefore, for example, in order to manufacture a wide-angle woven fabric (see FIG. 7) where warps and wefts intersect at 120 °, if the width of the woven fabric is 1 m, the movement distance of the left and right side edges (ears) is In order to make a difference of 0.5 m (1 m × sin 30 °) finally, the movement path of the other side edge is set to a mountain shape, for example, while the movement path of the other side edge is set linearly. The distance between the left and right moving paths is gradually approached according to the difference between the left and right moving paths so that the distance finally becomes 0.866 m (1 m × cos 30 °). By transporting the left and right side edges of the woven fabric at the same speed, the position of the other side edge of the woven fabric gradually shifts (lags) in the movement direction, and finally The weft intersects the warp at 120 °. In this state,
By gluing the intersection of the warp and weft of the woven fabric,
A wide-angle woven fabric is obtained.

According to the manufacturing apparatus of the present invention having the above structure, the left and right side edges of the woven fabric in which the warp yarns and the weft yarns fed from the woven fabric feeding device are orthogonal to each other are tenter chains or tenter belts. , Simply called a tenter chain)
It is conveyed while being gripped by the gripping means. At this time, the sprocket that guides the vicinity of the center part of one of the tenter chains is raised, and the left and right tenter chains are run at the same speed so that the position of the other side edge part with respect to the one side edge part of the woven cloth is increased. The weft yarn gradually shifts (delays) in the moving direction, and the weft yarn inclines from the orthogonal state with respect to the warp yarns, and at the same time, the other tenter chain gradually comes closer to one tenter chain due to the inclination of the weft yarn. To go. As a result, the weft intersects with the warp at an angle (for example, 120 °) larger than 90 °. Then, a wide-angle woven fabric is obtained by adhering the intersections of the warp yarns and the weft yarns with an adhesive treatment device and drying and fixing the adhesive with a drying device. Then, this wide-angle woven fabric is wound up by a winding device.

According to the manufacturing apparatus of the third aspect of the present invention, the tenter chain is run in a state in which both side edges of the woven cloth are gripped by the pin members and are sandwiched by the pressing belt pressing members from above. Accordingly, both side edges of the woven fabric are conveyed. As a result, even if the tension of the left and right tenter chains acts greatly on the woven cloth, both side edges of the woven cloth are reliably prevented from coming off the pin members or tearing the side edges.

[0013]

Embodiments of a wide-angle woven cloth manufacturing apparatus according to the present invention will be described below with reference to the drawings, and a manufacturing method of the present invention will be described.

FIG. 1 is a plan view showing an embodiment of a wide-angle woven fabric manufacturing apparatus, FIG. 2 is a side view of FIG. 1, and FIG. 3 is an enlarged perspective view of a part of a tenter chain.

As shown in FIGS. 1 and 2, the present manufacturing apparatus includes a woven fabric feeding device 1, a woven fabric conveying device 2, a woven fabric adhesion processing device 5, and a woven fabric drying device 6. A woven fabric cooling device 7 and a woven fabric winding device 8 are provided in this order from the left side of the drawing.

In the feeding device 1, a rotary shaft 11 for detachably supporting a roll-shaped woven fabric A in which a warp yarn and a weft yarn are orthogonal to each other is disposed on a pair of guide rods 12 so as to be movable in the axial direction, and position control is performed. The step motor 13 is used for moving.
The step motor 13 is connected to a photoelectric sensor 14 arranged on one side edge of the woven cloth A and for detecting the set position of the woven cloth A. Further, a brake mechanism 15 is arranged at one end of the rotary shaft 11, and the brake mechanism 15
Thus, the rotation of the rotary shaft 11 can be controlled to adjust the tension of the woven fabric A.

The transfer device 2 has a pair of endless tenter chains 22 and 23. One tenter chain 22
Is horizontally and linearly stretched between a drive sprocket 24 rotatably mounted near the rear end of the apparatus body 21 and a driven sprocket 25 rotatably mounted at the front end. The other tenter chain 23 is an endless tenter chain 23a, 23b, 23 divided into three parts.
c, and these three tenter chains 23a.
The total length of 23b and 23c is considerably longer than the length of the tenter chain 22. The first tenter chain 23a is horizontally and linearly stretched between the drive sprocket 26 arranged at a position facing the drive sprocket 24 and the driven sprocket 27 in front of the drive sprocket 26, and the third tenter chain 23a. The reference numeral 23c horizontally and in a straight line extends between a driven sprocket 29 arranged at a position facing the driven sprocket 25 and a drive sprocket 28 behind the driven sprocket 29.

The second tenter chain 23b is stretched between a drive sprocket 30 disposed forward of the driven sprocket 27 and a driven sprocket 31 disposed rear of the drive sprocket 28. A guide sprocket 32, which meshes with the center of the upper traveling portion, is vertically movable via a cylinder device 33. The guide sprocket 32, together with the cylinder device 33, is disposed on a carriage 35 movably mounted on a rail 34 curved in an arc shape as shown in FIG. Further, the driven sprocket 31 and the drive sprocket 28 of the third tenter chain 23c are mounted on the rail 36 curved in an arc shape so as to be able to travel.
7 are arranged. Further, the driven sprocket 29 of the third tenter chain 23c is movably arranged on a guide member 39 stretched from the supporting base 38 toward the opposing tenter chain 22.

The drive sprockets 24 and 26 of the left and right tenter chains 22 and 23a are integrally rotatably mounted on a common drive shaft 40 as shown in FIG.
A drive motor 41 is connected to one end of 0 through a speed reducer 42. Also, as shown in FIG.
Second driven sprocket 27 of tenter chain 23a and second
The drive sprocket 30 of the tenter chain 23b is connected by an endless transmission chain 43, and the driven sprocket 31 of the second tenter chain 23b and the drive sprocket 28 of the third tenter chain 23c are connected by an endless transmission chain 44. Therefore, when the drive shaft 41 is rotated clockwise by the drive motor 41 in FIG. 2, the tenter chain 22 and the first to third tenter chains 23a to 23c facing the tenter chain 22 are simultaneously clocked at the same speed. Rotate in the direction.

Further, behind the drive shaft 40, the apparatus main body 2
A guide roller 45 is rotatably arranged in parallel with the drive shaft 40 at the rear end of the upper part of the roller 1.

The adhesion processing device 5 includes a storage tank 5 for the adhesive liquid.
The apparatus main body 51 is provided with 2 and a pair of guide rollers 53 are provided above the storage tank 52. At the same height as the driven sprockets 25, 28 of the tenter chains 22, 23c, a guide roller 54 is rotatably arranged at the rear end of the apparatus main body 51. Further, a pair of upper and lower guide rollers 55 and 56 are also disposed above the front part of the storage tank 52, and the upper guide roller 56 is suspended by a cylinder device 57 so as to be lifted and lowered.

In the drying device 6, heating means (not shown) are provided above and below the device body 61, and a pair of guide rollers 62, 62, 63, 63 are rotatably provided above and below the entrance and exit, respectively. There is.

In the cooling device 7, guide rollers 73 and 74 are rotatably arranged on the front and rear of the device main body 71, and the woven fabric A stretched between these guide rollers 73 and 74 is installed in the device. The structure is such that cooling air is blown from the main body 71.

In the winding device 8, a rotary drive shaft 81 for detachably supporting the take-up roll B is rotatably arranged, and the rotary drive shaft 81 is rotated by a torque motor 82 via a speed reducer 83 in FIG. It consists of a structure that rotates counterclockwise.

By the way, the tenter chain 22.2
In this embodiment, a pin tenter is used as the gripping means for the woven fabric A of No. 3. That is, as shown in FIG. 3, a pin support plate 46 having an L-shaped cross section is provided on one side surface of each of the chains 22 and 23.
The vertical portion 46a of the pin support plate 46 is fixed to the horizontal portion 4 of the pin support plate 46.
A large number of pin members 47 are planted upward in 6b. Therefore, a large number of pin members 47 of the pin support plate 46.
On the other hand, the side edges of the woven cloth A are pressed down and hooked, so that the both side edges of the woven cloth A are moved to the tenter chains 22 and 23.
Is gripped by. The gripping means of the woven fabric A is not limited to the pin tenter, and for example, a clip or the like for sandwiching and fixing the side edge portion of the woven fabric A may be used.

Next, a mode (method) for manufacturing a wide-angle woven cloth by the manufacturing apparatus of the above-mentioned embodiment will be described. First, a roll-shaped woven fabric A (FIG. 6) made of a plain weave in which warp yarns and weft yarns are orthogonal to each other is attached to the rotary shaft 11 of the feeding device 1, and is passed over the guide roller 45 as shown in FIG. As described above, the both side edges (ears) of the woven fabric A are held by the pin members 47 of the left and right tenter chains 22 and 23. Further, depending on the wide-angle woven fabric to be produced, for example, when producing a wide-angle woven fabric A ′ (FIG. 7) in which the warp and the weft intersect at 120 °,
If the width of the woven cloth is 1 m, the guide sprocket is guided by the cylinder device 33 so that the moving distance of the left and right side edges can finally be 0.5 m (1 m × sin 30 °) difference l (FIG. 7). 32 is raised to make the second tenter chain 23b mountain-shaped.

In this state, the drive motor 41 is rotated to drive the left and right tenter chains 22 and 23 in the clockwise direction. As a result, the one side edge of the woven fabric A gripped and conveyed by the horizontal and straight tenter chain 22 is different from the one side edge of the woven fabric A gripped and conveyed by the tenter chain 23. Second tenter chain 2
There is a gradual delay in the conveyance by 3b, and a movement difference of 0.5 m occurs at the end position of the tenter chain 23b. Therefore, as shown in FIG. 1, the weft A is different from the warp A1 of the woven fabric A.
The intersection angle of 2 gradually increases from 90 °, and finally intersects at 120 °.

As the crossing angle of the weft yarn A2 with the warp yarn A1 increases from 90 °, the tenter chain 2
The distance between the second tenter chains 23b with respect to 2 gradually decreases from 1 m. That is, the guide sprocket 3
2 and the driven sprocket 31 move on the rails 34 and 36 together with the carriages 35 and 37 so as to approach the tenter chain 22. The distance between the tenter chain 22 and the second tenter chain 23b at the position of the driven sprocket 31 is 0.866 m (1 m × cos 30 °).

At the same time, the third tenter chain 23
The drive sprocket 28 of c is moved together with the carriage 37, and the driven sprocket 29 is moved to the tenter chain 22 side along the guide member 39, so that the distance between the third tenter chain 23c and the tenter chain 22 becomes 0.866 m over the entire length.

In this way, the woven fabric A is conveyed to the end of the tenter chains 22 and 23c in a state where the crossing angle of the weft yarn A2 with the warp yarn A1 is 120 °. Then, the woven fabric A is dried in the next drying device 6 while being dipped in the adhesive liquid in the storage tank 52 of the adhesive treatment device 5 and further cooled in the cooling device 7 to cross the warp yarn A1 and the weft yarn A2. Are glued together. The wide-angle woven fabric A ′ is then wound around the winding roll B of the winding device 8.

4 and 5 show different embodiments of the manufacturing apparatus of the present invention. The manufacturing apparatus according to the present embodiment is different from the above-described embodiment. Firstly, a tenter belt in which a large number of pin members 48 are planted at regular intervals in the longitudinal direction instead of the tenter chains 22 and 23. Two
2 '・ 23' was used, and each sprocket was replaced with a pulley with this change. Secondly, the tenter belt 22 '
And the endless press belts 91 and 92 that rotate together with the tenter belt 23 'are arranged along the side edge portions of the woven fabric A, respectively.

That is, as shown in FIG. 4, the tenter belt 23 'is composed of a mountain-shaped first tenter belt 23b' and a horizontal second tenter belt 23c ', and the first tenter belt 23b' is a drive pulley 30 ', Driven pulley 3
1 ', the guide pulley 32', and the second tenter belt 23c 'includes a driving pulley 29' and a driven pulley 2
Cross over to 8 '. The tenter belt 22 'is also stretched around a driving pulley (not shown) and a driven pulley (not shown).

Then, the holding belts 91 and 92 are rotatably arranged along the upper traveling portion of the first tenter belt 23a 'and the upper traveling portion of the tenter belt 22'. The pressing belt 91 is stretched over the pulleys 93 at both ends thereof, and the pressing belt 92 is stretched over the pulleys 94 and 95 at both ends thereof and the guide pulley 96 at the central portion. As shown in FIG. 5, the pressing belts 91 and 92 are formed by adhering an elastic body b made of foamed rubber along the lower surface of the belt main body a to form an elastic body b.
The tenter belts 22 'and 23' along the longitudinal direction of the lower surface of the
It has a structure in which a long groove c corresponding to the pin member 48 is opened.

Therefore, when the wide-angle woven cloth A '(FIG. 7) is manufactured by the manufacturing apparatus of this embodiment, the woven cloth A (FIG. 6) is used.
Pins 4 of tenter belts 22 'and 23' on both side edges of
It is gripped by 8 and from above, press belt 91.
While being sandwiched between the pressing members c of 92, both side edges of the woven fabric A are conveyed as the tenter belts 22 ′ and 23 ′ travel. The method of manufacturing the wide-angle woven fabric A'by this device is basically the same as that of the above-mentioned embodiment, but the left and right tenter belts 2
Even if the tension due to 2 ′ · 23 ′ acts greatly on the woven fabric A, it is possible to reliably prevent the both side edges of the woven fabric A from coming off the pin member 48 and the side edges thereof from tearing. so,
It is even more advantageous. A flat belt, a V-belt, a toothed belt, or the like is used as each of the above-mentioned belts. In the case of a toothed belt, a toothed pulley is used.

[0035]

As is clear from the above description,
The method and apparatus for manufacturing a wide-angle woven fabric of the present invention have the following effects.

(1) According to the manufacturing method of the present invention, a wide-angle woven cloth can be manufactured from an inexpensive general-purpose woven cloth such as a plain weave in which the warp threads and the weft threads intersect at right angles. Since it is not necessary to always keep the wefts parallel to each other, the manufacturing process is easy, the production efficiency is high, and the wide-angle woven fabric can be obtained at low cost.

(2) The manufacturing apparatus of the present invention has a simpler structure than the conventional apparatus described above, the equipment cost is low, and the installation space is small.

(3) In the manufacturing apparatus according to the third aspect, it is possible to surely prevent both side edges (ears) of the woven cloth from coming off the pin member and tearing the side edges.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a wide-angle woven fabric manufacturing apparatus according to the present invention.

FIG. 2 is a side view showing the manufacturing apparatus of FIG.

3 is an enlarged perspective view of a part of the tenter chain of FIG. 1. FIG.

FIG. 4 is a side view showing a part of a manufacturing apparatus according to another embodiment of the present invention.

5 is an enlarged cross-sectional view taken along line VV of FIG.

FIG. 6 is a plan view showing a woven fabric such as a plain weave in which warps and wefts are orthogonal to each other.

FIG. 7 is a plan view showing a wide-angle woven fabric in which the warp and the weft produced by the production method of the present invention intersect at an angle larger than 90 °.

[Explanation of symbols]

1 Feeding device 2 Conveying device 5 Adhesion processing device 6 Drying device 8 Winding device 22.23 (23a.23b.23c) Tenter chain 22'.23 '(23b'.23c') Tenter belt 26-32 Sprockets 33 Cylinder device 35/37 trolley 40 drive shaft 47/48 pin member A woven fabric A'wide angle woven fabric A1 warp yarn A2 weft yarn

Claims (3)

[Claims] 1. A woven cloth having both side edges where the warp and the weft intersect at 90 ° is held in the moving direction, and a moving path of one side edge of the woven cloth is set linearly while the other side edge is set. The movement path of the part is set in a curved shape such as a mountain shape or a valley shape, and both side edges of the woven fabric are moved at the same speed, and one side edge of the woven fabric is gradually moved to the other side edge. When the weft and the weft of the woven cloth are moved relative to each other in the moving direction so that the weft crosses the warp at an angle larger than 90 ° by approaching the warp, the other side of the weft is displaced relative to the weft. A method for manufacturing a wide-angle woven fabric, which comprises subjecting an intersecting portion to an adhesive treatment. 2. The warp and the weft wound into a roll are 9
A pair of woven cloth feeding devices that intersect at 0 ° and gripping means that are arranged at intervals in the width direction of the woven cloth, are driven in the same direction at the same speed, and grip the side edge portions of the woven cloth. It consists of an endless tenter chain or tenter belt.One tenter chain or tenter belt is longer than the other, and the vicinity of its center is guided by a sprocket or pulley that can move up and down, and one tenter chain or tenter belt is used. On the other hand, the other tenter chain or tenter belt is configured to be movable in the width direction of the woven fabric, a woven fabric conveying device, a woven fabric bonding device, a woven fabric drying device, and a woven fabric winding device. An apparatus for manufacturing wide-angle woven cloth, which is characterized by being sequentially provided with and. 3. The holding means for holding the tenter chain or the tenter belt is a multiplicity of pin members, and a pressing member provided with elastic pressing members along both side edges of the woven fabric held by the pin members. The apparatus for manufacturing a wide-angle woven fabric according to claim 2, wherein the belt is arranged so that it can travel at the same speed as each tenter chain or tenter belt.