JP2001089027A - Strand manufacturing device, strand manufactured by the device, and product manufactured using the strand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the split property and the catenary of the strand in a specified range from the beginning to the end of the winding of the cake. SOLUTION: The binder is applied to a glass filament 11 formed of molten glass in a bushing 10 by a binder applicator 15, and then, the glass filament is divided into sub strands 20 by a gathering shoe 16, and the sub strands are bundled in one strand by a reinforcement pad 12. The bundled strand is wound around a collet 17 with a cylindrical tube 18 fitted to its outer circumference while traversed by a traverse finger 19. The traverse finger is moved in the separating direction from the collet according to the increase in the winding diameter of the strand so that the distance between a working point P of the strand in the traverse finger and the winding position Q where the strand is wound around the collet is in a specified relationship.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strand manufacturing apparatus, a strand manufactured by the manufacturing apparatus, and a product manufactured using the strand.

[0002]

2. Description of the Related Art Conventionally, as a method for producing a strand from glass fibers, a method of forming a strand wound body (cake) by bundling a glass filament obtained by spinning into a strand and winding it into a collet is generally used. I have.

Specifically, for example, a large number (for example, about 1000) of glass filaments are formed from molten glass in a bushing, and a binder (a sizing agent) is applied to these glass filaments by a binder applicator. The glass filament is split into a plurality of sub-strands by a gathering shoe, the plurality of sub-strands are bundled into one strand by a reinforcing pad, and the bundled strands are traversed by a traverse finger (a traverse means) on a rotating collet. And wind while traversing.

[0004] Using the strand wound on the collet as described above, for example, roving (hereinafter referred to as “ROV”), chopped strand (hereinafter referred to as “CS”),
Chopped strand mat (hereinafter referred to as "CSM")
And other products are manufactured.

[0005]

However, in the conventional method for manufacturing a strand, the traverse finger is located at a fixed position with respect to the collet. Therefore, as the winding diameter of the strand around the collet increases, the strand is formed on the collet. The distance between the winding position to be wound and the traverse finger is reduced, the traversing state of the strand on the collet changes, and the sub-strands are easily brought into contact with each other, and as a result, as the outer layer of the strand winding body, There is a problem that the divided state of the substrands is reduced. The degree of splitting of the sub-strand (split property) is the ratio (%) of the number of sub-strands actually split in the dried strand winding to the number of sub-strands when split by the gathering shoe. expressed.

[0006] When a strand having a low splitting property is used for the production of products such as ROV, CS and CSM, the proportion of thick glass fibers increases and it becomes impossible to obtain a uniform and good-looking product.

Further, the tension of each sub-strand is not always uniform. "Catenary" is used as a criterion for evaluating the degree of non-uniformity of the tension.

As shown in FIG. 5, the catenary of a strand is obtained by cutting a strand to a predetermined length, fixing both ends of the strand, and stretching the substrand one at a time when the substrands are loosened one by one. It can be determined from the degree of sagging of the substrand in the part. That is, as shown in FIG. 5, the catenary is expressed as a difference (A−B) between the maximum length (A) and the minimum length (B) among the lengths of the substrands 2 loosened from the strands 1. It is.

[0009] The split nature of a strand is inextricably linked to the catenary of the strand. When the catenary is large, the splitting property is high, and when the catenary is small, the splitting property is low. If the strand catenary is large,
When a product is manufactured using the strand, there is a problem that the product is caught or entangled, and as a result, the yield of the product is reduced. Therefore, the smaller the catenary of the strand, the better.

[0010] As described above, a strand having a low splitting property is generally likely to be judged to be of poor quality. However, in order to enhance the splitting property, it is necessary to increase the catenary, and a strand having a large catenary is generally judged to be of poor quality. Therefore, an ideal strand, that is, a strand having a high splitting property and a small catenary itself includes a fundamental contradiction, and in reality, a strand adjusted to a range in which the problem of the splitting property and the catenary does not occur is preferable. It is.

An object of the present invention is to provide a strand manufacturing apparatus capable of maintaining the split property and catenary of a strand within a certain range from the beginning to the end of winding of a cake, a strand manufactured by the manufacturing apparatus, and the strand. To provide a product manufactured using the same.

[0012]

In order to achieve the above object, a strand manufacturing apparatus according to claim 1 forms a plurality of sub-strands from a plurality of filaments and focuses the sub-strands on one strand. The yarn traversing means, a collet for winding the strand, and a traverse means for traversing the strand when the strand is wound on the collet, wherein the traverse means 2. The strand manufacturing apparatus according to claim 1, further comprising control means for moving at least one of the collets and controlling a distance between the collets and the control means when the strands are wound around the collet. By controlling the distance between the traverse means and the collet, the splitness of the strand and catenary can be It can be maintained within a certain range to the winding end from the beginning.

[0013] According to a second aspect of the present invention, there is provided a strand manufacturing apparatus.
2. The strand manufacturing device according to claim 1, wherein the control unit is configured to control the traverse unit and the traverse unit such that a distance between the winding position at which the strand is wound around the collet and the traverse unit has a predetermined relationship. 3. It is characterized in that at least one of the collets is moved continuously.

According to a second aspect of the present invention, the traverse means and the collet are controlled by the control means such that the distance between the winding position at which the strand is wound on the collet and the traverse means is in a predetermined relationship. Is continuously moved, so that the splitting property and catenary of the strand can be reliably maintained within a certain range from the beginning to the end of winding of the cake.

According to a third aspect of the present invention, there is provided a strand manufacturing apparatus,
3. The strand manufacturing apparatus according to claim 2, wherein the control means continuously moves at least one of the traversing means and the collet in accordance with a change in a winding diameter when the strand is wound on the collet. It is characterized by making it.

According to a third aspect of the present invention, the control means continuously controls at least one of the traversing means and the collet in accordance with the change in the winding diameter when the strand is wound on the collet. Since the strand is moved, the distance between the winding position where the strand is wound on the collet and the traversing means can be easily controlled to a predetermined relationship.

According to a fourth aspect of the present invention, there is provided a strand manufacturing apparatus,
4. The strand manufacturing apparatus according to claim 1, wherein the control unit moves the traverse stage relative to the collet. 5.

According to the fourth aspect of the present invention, the traverse means is moved relative to the collet by the control means, so that the control means can be realized with a simple configuration.

The strand manufacturing apparatus according to claim 5 is
The strand manufacturing apparatus according to any one of claims 1 to 4, wherein the filament is made of glass.

In order to achieve the above object, a strand according to claim 6 is manufactured by the strand manufacturing apparatus according to any one of claims 1 to 5.

According to the strand described in claim 6, a strand satisfying the split property and catenary of the strand can be obtained.

In order to achieve the above object, a product according to a seventh aspect is manufactured using the strand according to the sixth aspect.

According to the product described in claim 7, it is possible to obtain a product in which the strands are uniform, the appearance is good, and the yield rate of the product during the production is improved.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A strand manufacturing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a strand manufacturing apparatus according to an embodiment of the present invention.

At the bottom, a large number (not shown) (for example, about 1000
The molten glass heated and melted by a melting furnace (not shown) is introduced into the bushing 10 having the nozzles of the present invention.
00 glass filaments 11 are formed. After the water for cooling is sprayed on these glass filaments 11, a binder (a sizing agent) for converging many glass filaments 11 into one strand is applied by a binder applicator 15. The binder applicator 15 includes a container 13 containing a binder,
And a roller 14 rotating in contact with the binder in the container 13.
The binder is applied by contacting the peripheral surface of the binder.

A large number (for example, 10) of a large number of glass filaments 11 coated with a binder are gathered by a gathering shoe 16 arranged downstream of a binder applicator 15.
After the yarns are split into the substrands 20), they are bundled as one strand by the reinforcing pad 12.

Further, one strand bundled by the reinforcing pad 12 is wound while being traversed by a traverse finger 19 (traversing means) on a collet 17 in which a cylindrical tube 18 is fitted on the outer periphery.

By removing the cylindrical tube 18 of the collet 17 from which the strand has been wound as described above from the collet 17, a strand wound body (cake) is obtained.
The thickness of the deposited layer of the strand in the strand winding is
For example, the cake core diameter is about 300 mm, and 25 to 35 mm for a cake of 10 kg / package.

Next, the ROV is obtained by unwinding the strand wound body and rewinding it into a cylindrical shape again, and unwinding the strand wound body to a predetermined length (for example, several to several hundred m).
m), and CS is deposited on a sheet and formed into a mat to form a CSM.
Each product is obtained.

In the strand manufacturing apparatus according to the present embodiment, the traverse finger 19 is moved horizontally in a direction away from the collet 17 by a moving device to be described later, and the action point P of the strand on the traverse finger 19 and the collet 17 Is controlled so that the distance from the take-up position Q at which the take-up is performed has a predetermined relationship.

In the above embodiment, the cylindrical tube 18a is located adjacent to the collet 17 in which the cylindrical tube 18 is fitted.
When the winding of the strand to the collet 17 is completed, the collet 17a is moved to the position of the collet 17 to quickly restart the winding of the strand. It can be carried out.

FIG. 2 is a schematic perspective view of the moving device of the traverse finger 19.

A traverse finger 19 for traversing the strand to the collet 17 is attached to a traverse shaft 31, and the traverse shaft 31 is rotated by a traverse rotation device 32 mounted on a horizontal table 33.

The base 33 has two sets of linear guide bearings 34,
The linear motion guide bearings 34, 35 are slidably fitted on the linear motion guide rods 36, 37 disposed horizontally. Thus, the table 33 can move along the linear guide rods 36 and 37.

A vertical plate 40 is fixed to the lower surface of the table 33,
A rack 41 extends parallel to the linear guide rods 36 and 37 from one side of the vertical plate 40. A pinion gear 44 fixed to an output shaft of a motor 42 via a clutch 43 is engaged with the rack 41. From the other side of the vertical plate 40, a piston shaft 47 of an air cylinder 46 formed integrally with the rack 41 extends in parallel with the linear guide rods 36 and 37.

The motor 42 moves the traverse finger 19 horizontally away from the collet 17 by moving the rack 41 in the direction of arrow A via the pinion gear 44. The air cylinder 46 acts on the rack 41 in a direction opposite to the direction of the arrow A with a smaller force than the rotational force of the motor 42 that moves the rack 41 in the direction of the arrow A, thereby reducing the backlash between the rack 41 and the pinion gear 44. Can be eliminated.

A positioning projection 48 is provided at the lower end of the vertical plate 40.
The projection 48 can abut against a positioning stopper 50 provided on the bed 49.
The projection 48 facilitates positioning of the initial position of the traverse finger 19 at the start of winding the strand.

A control device 45 is connected to the motor 42. The control device 45 moves the traverse finger 19 to the collet 17 so that the distance between the point of action P of the strand and the winding position Q of the strand is constant. The rotational speed of the motor 42 is controlled so as to move in the direction away from the collet 17 in accordance with the amount of increase in the winding diameter of the strand.

That is, the control device 45 controls the rotation speed of the motor 42 so that the horizontal distance between the axis Oc of the collet 17 and the rotation center Ot of the traverse finger 19 is 200 to 300 mm. As X, the traverse finger 19 is moved relative to the collet 17; X = At + B (where t is time (minutes), and A is a constant: 0.5 to 1.
5 mm / min, B is a constant: 220 to 300 mm)
Move to take the position represented by. Note that the constant A
Is 0.5 to 1.5 m depending on the rotation speed of the collet 17.
m / min.

By controlling the horizontal distance X between the axis Oc of the collet 17 and the rotation center Ot of the traverse finger 19 as described above, the splitting property of the strand is maintained high from the beginning to the end of the winding of the cake, and the catenary is formed. Unnecessary increase can be suppressed.

If the moving speed of the traverse finger 19 is made exactly the same as the speed of thickening the cake, the split property of the strand and the catenary can be made quite uniform from the beginning to the end of the winding. In this embodiment, the traverse finger 19 is moved at a speed slightly lower than the cake thickening speed because the problem of roll collapse newly occurs.

Since the strands from the beginning to the end of the winding of the strand can be made uniform, the number of windings of the strand (the number of layers) can be increased, the diameter of the strand winding body can be increased, and the weight of one winding body can be increased. Therefore, the number of products can be reduced, handling properties can be improved, and transport costs can be reduced. Further, since the split property can be kept high from the beginning to the end of the winding of the cake, the product manufactured using this strand has a uniform and improved appearance.

Further, by suppressing the catenary of the strand from increasing more than necessary, it is possible to prevent the occurrence of snagging or entanglement when unwinding the strand when manufacturing a product using the strand. In addition, it is possible to prevent the yield rate of products from lowering.

The preferred range of the split property and catenary of the strand differs depending on the intended use. For example, if the strand is used for CSM, it is better to have a large splitting property, and the catenary should be in a range that does not cause snagging or entanglement during product manufacture, that is, a range that does not adversely affect productivity. On the other hand, if the strand is used for ROV, the split property is not so important, while the catenary is important from the viewpoint of adversely affecting the winding shape or reducing defective products.

Therefore, although the preferred range of the split property and catenary of the strand cannot be specified unconditionally, the CSM
In the case of, the splitting property is 50% or more, preferably 60%.
% Or more, and in the case of ROV, 3
It is good to be 0 mm or less, preferably 15 mm or less.

In the above-described embodiment, the traverse finger 19 is configured to be movable with respect to the collet 17, but the same effect can be obtained by configuring the collet 17 to be movable with respect to the traverse finger 19. it can.

In the above embodiment, the moving device is a rack-and-pinion mechanism, but it is a matter of course that various mechanisms such as a chain sprocket mechanism and a gear driving mechanism may be applied.

[0049]

Embodiments of the present invention will be described below.

(1) Embodiment The collet 17 and the traverse finger 1 are manufactured by using the strand manufacturing apparatus according to this embodiment having the above-described configuration.
When the vertical distance between the axis centers of No. 9 was 245 mm, the horizontal distance between the coaxial centers was initially set to 245 mm, and a cylindrical tube 18 having a diameter of about 300 mm was attached to the collet 17.
After a binder is applied to the 9 μm-diameter glass filaments 11 by a binder applicator 15, the glass filaments 11 are split into ten substrands 20 by a gathering shoe 16, and a reinforcing pad 12 is formed.
To form a single strand, and the bundled strand is wound by a traverse finger 19 while traversing a collet 17 on which a cylindrical tube 18 is fitted.

At this time, the horizontal distance X between the axes of the collet 17 and the traverse finger 19 is determined by the moving device.
The traversing finger 19 is moved in the direction away from the collet 17 and horizontally so that t is a time (minute) so that the following equation is satisfied: X (mm) = 1.0 (mm) t (minute) +245 (mm) Thereby, the horizontal distance X between the axial centers of the collet 17 and the traverse finger 19 was always kept in the range of 240 to 250 mm.

When the strand has been wound up by 48,000 m, the winding of the strand into the collet 17 is completed.
The resulting cake was measured for strand splitting properties and catenary.

The split property is determined by the beginning of the cake roll (0 m).
From, 1,000m, 5,000m, 10,000m,
20,000m, 30,000m, 40,000m, 4
The number of substrands actually divided at each winding point of 5,000 m and 48,000 m is visually measured ten times, and the average value thereof is set as the actual number N of substrand divisions. Assuming that the number of divisions of the sub-strand 20 at the time of splitting was N0, the splitting property SP of the strand was calculated using the following equation SP = N / N0 (× 100%). FIG. 3 shows the calculation result of the split SP.
Is indicated by a dot.

On the other hand, as the catenary of the strand,
At each winding point of 1,000 m, 25,000 m, and 40,000 m, sampling was performed by 2 m at a time, and the range of the longest and shortest lengths of the length of each substrand was measured. The results of catenary measurement are indicated by the black dots in FIG. (2) Comparative Example A strand was manufactured under the same conditions as in the above example except that the position of the axis Ot of the traverse finger 19 was fixed. About this cake, the split property and catenary of the strand were measured similarly to the Example. This comparative example corresponds to the prior art. The measurement result of the split property of the strand is shown by a black point in FIG. 3, and the measurement result of the catenary is shown by a white point in FIG.

According to FIG. 3, the splitting property of the strand in the comparative example is 81% at the beginning of the winding of the strand, and decreases to 48% as the winding of the strand proceeds. 20, from the beginning of the strand
Up to the point of 000m, it is maintained at 70-74%,
After the winding point of 00m, it has been reduced to only 60%.

According to FIG. 4, the catenary of the strand is
At each winding point of 1,000 m, 25,000 m, and 40,000 m, the value of the example is smaller than the value of the comparative example.

As described above, according to FIGS. 3 and 4, in this embodiment, the splitting property of the strand is always 60% or more.
In addition, the catenary of the strand is 30 mm or less, which is clearly improved with respect to the comparative example.

[0058]

As described above in detail, according to the strand manufacturing apparatus of the first aspect, when the strand is wound on the collet, the distance between the traverse means and the collet is controlled by the control means. Thereby, the split property and catenary of the strand can be maintained in a certain range from the beginning to the end of winding of the cake.

According to the second aspect of the present invention, the traverse means and the collet are controlled by the control means such that the distance between the winding position at which the strand is wound on the collet and the traverse means has a predetermined relationship. Is continuously moved, so that the splitting property of the strand and the catenary can be reliably maintained in a certain range from the beginning to the end of winding of the cake.

According to the third aspect of the present invention, the control means continuously controls at least one of the traverse means and the collet in accordance with the amount of change in the winding diameter when the strand is wound on the collet. Since the strand is moved, the distance between the winding position where the strand is wound on the collet and the traversing means can be easily controlled to a predetermined relationship.

According to the fourth aspect of the present invention, since the traverse means is moved relative to the collet by the control means, the control means can be realized with a simple configuration.

According to the strand of the sixth aspect, a strand satisfying the split property and catenary of the strand can be obtained.

According to the product of the seventh aspect, it is possible to obtain a product in which the strands are uniform and the appearance is good, and the yield rate of the product during the production is improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a strand manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a moving device of a traverse finger 19;

FIG. 3 is a graph showing a measurement result of a split property.

FIG. 4 is a graph showing measurement results of catenary.

FIG. 5 is an explanatory diagram of a catenary.

[Explanation of symbols]

 Reference Signs List 10 bushing 11 filament 12 reinforcing pad 15 binder applicator 16 gathering shoe 17, 17a collet 18, 18a cylindrical tube 19 traverse finger 32 traverse rotation device 33 units 34, 35 linear guide bearing 36, 37 linear guide rod 41 rack 42 motor 44 Pinion gear 45 Control device 46 Air cylinder 50 Stopper

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hiroyuki Eguchi 3-5-11 Doshomachi, Chuo-ku, Osaka-shi, Osaka F-term in Nippon Sheet Glass Co., Ltd. 3F056 AA06 AB01 AC06 DA06 DB08

Claims (7)

[Claims] A plurality of filaments; a plurality of sub-strands; a plurality of filaments; a plurality of sub-strands; a yarn-bundle converging means for converging the sub-strands into one strand; a collet for winding the strand; A traversing means for traversing the strand, the traversing means comprises a control means for moving at least one of the traversing means and the collet to control the distance between the two. Characteristic strand manufacturing equipment. 2. The traversing means and the collet are connected so that a distance between the winding position at which the strand is wound around the collet and the traversing means has a predetermined relationship. The strand manufacturing apparatus according to claim 1, wherein the strand is moved. 3. The traverse means and at least one of the collets are continuously moved in accordance with an amount of change in a winding diameter when the strand is wound around the collet. An apparatus for producing a strand according to claim 2. 4. The strand manufacturing apparatus according to claim 1, wherein said control means moves said traverse means relative to said collet. 5. The strand manufacturing apparatus according to claim 1, wherein the filament is made of glass. 6. A strand manufactured by the strand device according to claim 1. Description: 7. A product manufactured using the strand according to claim 6.