JP2000052468A - Core material containing carbon fiber, guide roller for flexible long sheet using the same, and production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide roller having necessary rigidity, bending strength and surface rigidity and capable of being achieved in wt. reduction. SOLUTION: A guide roller 10 for guiding a flexible long sheet material such as a paper material or a material for a magnetic tape to a winding core is equipped with a cylindrical carbon fiber layer formed by winding a carbon fiber prepreg formed by mutually arranging a large number of carbon fibers in parallel to form them into a sheet by a semicured resin around the surface of a released core metal to thermally cure the same, the resin cured layer containing carbon or glass fibers integrated with the surface of the carbon fiber layer to be wound therearound and the support jigs 14 respectively fixed to both ends after the core metal 11 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core material for winding a flexible elongate sheet material 20 such as a paper stock or a magnetic tape stock, or a flexible elongate sheet. The present invention relates to a guide roller for stably guiding a sheet material 20 to a processing step for a long period of time, and more particularly, to a core material formed of carbon fiber and a guide roller using the same. Things.

[0002]

2. Description of the Related Art For example, a paper web, which is a flexible long sheet material 20, is processed by printing and cutting while being transported at high speed by a rotary press or the like. , A large number of guide rollers for guiding the long sheet material 20 are used. These guide rollers are rotated at a high speed following the conveyance of the long sheet material 20, and have bending strength enough to withstand the high-speed rotation.
It must have a surface strength that can withstand long-term use.

On the other hand, a magnetic tape such as a video tape mainly made of Tetron is manufactured from a so-called "raw material" which is wide and very long. As shown in FIG. 1, from the manufacturing location to the magnetic tape manufacturing location, the tape is wound around a core 21 and transported and stored. That is, the raw material for the magnetic tape must be once wound around the core 21. The same is true for the above-mentioned paper stock, or a resin film for stencil paper, for example.

It is a matter of course that wrinkles must not be wrinkled or broken when the flexible long sheet material 20 which is the raw material for the magnetic tape is wound around the core 21. In order to prevent this, a guide roller for guiding the long sheet material 20 is used in a stage preceding the core 21 in the same manner as in the rotary press described above. Since the guide roller is generally formed of a metal in order to secure bending strength and surface hardness, it is very heavy.

[0005] Since the conventional guide roller is heavy, the long sheet material 20 running along the conventional guide roller is liable to be torn or wrinkled, and the replacement work is also difficult. It will be. In particular, the flexible long sheet material 20 tends to be formed widely in order to efficiently manufacture magnetic tapes and the like, and each guide roller that is supported over its entire width is naturally long and heavy. , You can imagine the difficulty of replacement work.

Further, this kind of flexible long sheet material 2
0 means that the sheet is conveyed at a considerably high speed, and the guide roller that follows the sheet is naturally light and has a strength that does not cause "bending", and therefore, is a flexible long sheet. It is very difficult to guide the conveyance of the material 20 without causing wrinkles or the like in the flexible long sheet material 20. In other words, the conventional guide roller could not convey the flexible long sheet material 20 at high speed.

To summarize the above, conventional guide rollers made of metal or the like have the following problems that must be improved. Since it is a very heavy object, that is, a heavy object, replacement work is difficult to perform. As a result, the cost of a product manufactured from the flexible long sheet material 20 is increased. Because it is heavy, it is not suitable for high-speed conveyance.

The inventor of the present invention has conducted various studies on how to improve the above points, and as a result, completed the present invention.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described situation in a conventional metal guide roller, and the problem to be solved is to improve the above-mentioned points (1) to (4). That is.

[0010] That is, an object of the invention according to claim 1 is to provide a core material having required rigidity, bending strength, and surface hardness and capable of reducing the weight. The second object of the present invention is to achieve the same object as the first aspect of the present invention, and to bend even when the flexible long sheet material 20 is rotated at a high speed while being wound. An object of the present invention is to provide a core material having a bending strength that does not have any problem.

An object of the invention according to claim 3 is to achieve the same object as the invention of claim 1 or claim 2 and to provide a flexible long sheet material 2.
It is an object of the present invention to provide a core material suitable for a case where 0 does not like to be charged like a raw magnetic tape, or capable of improving smoothness and abrasion resistance.

It is still another object of the present invention to provide a guide roller having required rigidity, bending strength, and surface hardness and capable of reducing weight. A fifth object of the present invention is to provide a guide roller which can achieve the same object as the invention of the fourth aspect and has a bending strength which does not bend even at a high speed rotation. It is in.

An object of the invention according to claim 6 is to provide the guide roller according to claim 4 or 5,
An object of the present invention is to provide a manufacturing method that can be manufactured easily and reliably.

The object of the invention according to claim 7 is to achieve the same object as the invention of claim 4 or claim 5, and to provide a flexible long sheet material 20. It is an object of the present invention to provide a guide roller which is suitable for a case where charging is reluctant, such as a raw magnetic tape, or which can improve smoothness and abrasion resistance.

[0015]

Means for Solving the Problems In order to solve the above problems, first, means according to the first aspect of the present invention will be described with reference numerals used in the following description of embodiments. "A core material 10A for winding a flexible long sheet material 20 such as a paper web or a magnetic tape web,
Carbon fiber prepreg 10a in which a large number of carbon fibers are arranged in parallel with each other and formed into a sheet by a semi-cured resin.
Is wound on the surface of the cored bar 11 to be released, and then thermally cured to form a cylindrical carbon fiber layer 12.
And a resin cured layer 13 that is integrated with the surface of the carbon fiber layer 12 and contains a wound carbon fiber or glass fiber 13b therein. Core material 10A containing fibers ".

That is, the core material 10A according to claim 1
A carbon fiber layer 12 having carbon fibers as a main component, and a resin cured layer 13 containing carbon fibers or glass fibers 13b formed thereon on a core metal 11 to be released later. The carbon fiber layer 12 mainly composed of carbon fibers and the resin cured layer 1
The required rigidity and bending strength could be secured by the carbon fiber or glass fiber 13b in 3. Therefore, according to the core material 10A according to the first aspect, not only the material constituting the guide roller 10 according to the fourth aspect and the like, but also the core roller 21 and the like are very excellent. is there.

The core material 10A is provided on the surface of a carbon fiber layer 12 made of a carbon fiber prepreg 10a.
A resin cured layer 13 containing carbon fiber or glass fiber 13b therein is formed.
The rigidity can be ensured by the carbon fiber or glass fiber 13b in the resin cured layer 13
The core material 10A can be reused by re-polishing the resin 13a to be the surface of the substrate 13a, and as a result, the durability is improved.

Of course, this core material 10A is formed by winding a carbon fiber prepreg 10a around a core metal 11 as shown in FIG.
As shown in FIG. 1, it has a substantially cylindrical shape, and is sometimes used as the winding core 21 shown in FIG. It will be excellent. Further, as shown in FIG. 4, support members 14 for rotatably providing the core material 10A in the transport path are attached to both ends of the core material 10A, respectively. You can do it.

Further, when the flexible long sheet material 20 is wound in a large amount and rotated at a high speed, the core material 10A must not bend. It is the core material 10A according to claim 2 that prevents the occurrence of blemishes. In the core material 10A according to the second aspect, the core material 10A according to the first aspect is described as follows.
A first carbon fiber layer 12a in which each carbon fiber is at a first predetermined angle with respect to the axial direction of the cored bar 11, and a carbon fiber at a second predetermined angle with respect to each carbon fiber of the first carbon fiber layer 12a; And the second carbon fiber layer 12b where the fibers intersect. "
As a result, the core material 10A has sufficient rigidity without hindering the weight reduction.

That is, in the core material 10A according to the second aspect, the first carbon fiber layer 12a and the second carbon fiber layer 12b in which the respective carbon fibers cross each other at a predetermined angle are formed in the carbon fiber layer 12. Even if a material obtained by prepregging carbon fibers parallel to each other, that is, a carbon fiber prepreg 10a, is used, one of them complements the other, and the rigidity as a whole is extremely high. is there.

When the long sheet material 20 is easily charged, such as a raw magnetic tape or a nonwoven fabric, it is necessary to prevent static electricity from being charged during winding. That is, the core material 10A for winding the long sheet material 20 must be able to always release static electricity. This is the core material 10A according to the third aspect.
The core material 10A according to claim 1 or 2,
0A, “The plating layer 1 is formed on the surface of the resin cured layer 13.
5 is formed. "

Thus, the core material 10 according to claim 3 is provided.
In A, due to the presence of the plating layer 15,
Alternatively, not only the same function as the core material 10A of the second aspect is exhibited, but also the long sheet material 20 is prevented from being charged. Of course, the presence of the plating layer 15 can improve the abrasion resistance of the core material 10A, and has sufficient smoothness to prevent breakage of the long sheet material 20 when the long sheet material 20 is wound. That is, it is possible to have.

[0023] In order to solve the above problems, means adopted by the invention according to claim 4 will be described with reference numerals used in the description of the embodiments described below.
"A guide roller 10 for guiding a flexible long sheet material 20 such as a paper stock or a magnetic tape stock toward a winding core 21 or the like. A cylindrical carbon fiber layer 12 formed by winding a carbon fiber prepreg 10a sheeted with a cured resin on the surface of a cored bar 11 to be released and then thermally curing the carbon fiber prepreg 10a. Integrated and wound carbon fiber or glass fiber 13
b. A guide roller 10 containing carbon fibers for a long sheet material 20, comprising a resin cured layer 13 containing b inside, and supports 14 fixed to both ends of the cored bar 11, respectively. It is.

That is, the guide roller 10 according to the fourth aspect of the present invention includes a carbon fiber layer 12 having carbon fibers as a main component on a metal core 11 to be released later.
Carbon fiber or glass fiber 13 formed thereon
and a cured resin layer 13 containing b inside.
Overall weight reduction (approximately 1/5 compared to conventional metal products)
The following rigidity and bending strength can be achieved by the carbon fiber layer 12 mainly composed of carbon fiber and the carbon fiber or glass fiber 13b in the cured resin layer 13. We were able to secure it.

Therefore, according to the guide roller 10 according to the fourth aspect, even if the guide roller 10 has to be replaced, the work can be easily performed because the weight is reduced. Further, since the weight is reduced, the flexible long sheet material 20 is rotated following the flexible long sheet material 20 and the winding of the long sheet material 20 around the core 21 is performed by the flexible long sheet material 20. This can be performed without causing wrinkles or tears, and the loss rate of the long sheet material 20 can be reduced, which is extremely useful in industry.

The guide roller 10 is formed by forming a cured resin layer 13 containing carbon fibers or glass fibers 13b on the surface of a carbon fiber layer 12 composed of a carbon fiber prepreg 10a. The rigidity can be ensured by the carbon fiber or glass fiber 13 b in the resin 13, and the guide roller 10 can be reused by re-polishing the resin 13 a serving as the surface of the resin cured layer 13. As a result, the durability is improved.

Of course, the guide roller 10 is formed into a substantially cylindrical shape as shown in FIG. 2 by winding the carbon fiber prepreg 10a around the core metal 11, and separates the core metal 11 from the core roller. As shown in FIG. 4, support members 14 for rotatably providing the guide rollers 10 in the conveying path are attached to both ends after the molding. The support 14 is originally required for this type of guide roller, and does not increase the weight as compared with the conventional one.

Further, when the flexible long sheet material 20 is conveyed at a high speed, the guide roller 10 must not be bent, but it is necessary to prevent the bent from occurring. This is the guide roller 10 according to item 5. In the guide roller 10 according to the fifth aspect, the guide roller 10 according to the fourth aspect is characterized in that the carbon fiber layer 12 has a structure in which each carbon fiber forms a first predetermined angle with respect to the axial direction of the metal core 11. A carbon fiber layer 12a and a second carbon fiber layer 12b in which each carbon fiber intersects at a second predetermined angle with respect to each carbon fiber of the first carbon fiber layer 12a. " However, this allows the guide roller 10 to have sufficient rigidity without hindering its weight reduction.

That is, the guide roller 1 according to claim 5
0, the first carbon fiber layer 12a and the second carbon fiber layer 12b in which the respective carbon fibers cross each other at a predetermined angle are provided in the carbon fiber layer 12, so that the carbon fibers parallel to each other are formed. Even if a prepreg-made material, that is, the carbon fiber prepreg 10a is used, one of them complements the other, and the rigidity is very high as a whole.

In order to solve the above-mentioned problem, the means adopted in the invention according to claim 6 is a method similar to that described above, wherein "the carbon fibers forming the carbon fiber layer 12 are parallel to each other around the cored bar 11. After winding a carbon fiber prepreg 10a and winding a carbon or glass fiber 13b impregnated with a resin 13a to be a resin cured layer 13 on the surface thereof, the resin 13a and the carbon fiber prepreg 10a are wound.
A method of manufacturing a guide roller 10 containing carbon fibers, wherein the core resin 11 is released from the mold by thermally curing the resin therein, and the surface of the resin cured layer 13 is ground or polished.

That is, the method for manufacturing the guide roller 10 includes a method in which a large number of carbon fibers arranged in parallel to each other are prepregged into a sheet (hereinafter, simply referred to as a carbon fiber prepreg 10a), and a carbon or glass impregnated with a resin 13a. By effectively utilizing the fibers 13b, it is possible to surely reduce the weight of the completed guide roller 10 and to secure a predetermined rigidity. The guide roller 10 can be easily manufactured even if carbon fibers that are difficult to handle are used.

In order to form the carbon fiber layer 12, which is an important part of the guide roller 10, a carbon fiber prepreg is formed by integrating a large number of carbon fibers arranged in parallel with each other into a sheet with a semi-cured resin. 10
It is necessary to use a. The reason is that each carbon fiber in the carbon fiber prepreg 10a itself has a high tensile strength in the length direction, and each of these carbon fibers is formed into a sheet-like carbon fiber prepreg 10a. Thereby, the carbon fiber prepreg 10a itself is lightweight and has sufficient rigidity and strength. Further, by using the carbon fiber prepreg 10a, the weight and rigidity of the guide roller 10, which is the final product, is ensured.

In order to sufficiently draw out the high rigidity and light weight of the carbon fiber itself with the guide roller 10, for example, as shown in FIG. 5 or FIG. A carbon fiber layer 12a and a second carbon fiber layer 12b,
It is preferable that the carbon fibers in each of the carbon fiber prepregs 10a are wound around the cored bar 11 so as to cross each other at a predetermined angle. In the example shown in FIG. 5, the first carbon fiber layer 1
In winding the carbon fiber prepreg 10a to be 2a around the core metal 11, the carbon fiber prepreg 10a
The direction of each carbon fiber in a is made parallel to the axial direction of the cored bar 11, and the carbon fiber prepreg 10a which is wound next to become the second carbon fiber layer 12b is Each carbon fiber is 90 degrees with respect to the direction of each carbon fiber in the first carbon fiber layer 12a.
It is intended to be a degree.

That is, the example shown in FIG. 5 shows a case where the first predetermined angle described in the claims is "0 degree" and the second predetermined angle is "90 degree". . Of course, the first predetermined angle may be set to "90 degrees" and the second predetermined angle may be set to "90 degrees" (that is, parallel to the cored bar 11).

In the example shown in FIG. 6, two carbon fiber prepregs 10a are polymerized so that the direction of each carbon fiber is 90 degrees, and the four corners are cut. Carbon fiber prepregs that intersect at different degrees 1
0b is formed in advance, and the carbon fiber prepreg 10b is wound around the metal core 11. By doing so, each carbon fiber intersects at 45 degrees with the axis of the cored bar 11, and each carbon fiber in the first carbon fiber layer 12a and the second carbon fiber layer 12b intersects at 90 degrees. That is what you will do.

In any of the above cases, the guide roller 10
Each of the first carbon fiber layers 12a and the second
Since the carbon fibers in the carbon fiber layer 12b intersect with each other at 90 degrees, the tensile strength of each carbon fiber itself is not limited to the axial direction of the guide roller 10,
In the radial direction, it can be sufficiently exerted.

Of course, the above carbon fiber prepreg 10
The number of windings of a or 10b is appropriately set in order to secure the required strength according to the application, and the thickness of each of the first carbon fiber layer 12a and the second carbon fiber layer 12b is Can be freely changed by appropriately selecting the number of windings.

The carbon or glass fiber 13b impregnated with the resin 13a is wound around the surface of the carbon fiber layer 12 formed as described above.
It is necessary to form the resin cured layer 13. The reason is that the resin cured layer 13 makes the carbon fiber prepreg 10
(a) to smooth the surface of the carbon fiber layer 12 formed by a, and to secure rigidity by the carbon or glass fiber 13b in the cured resin layer 13; This is to make it easy to reproduce the data. At this time, in order to prevent air from remaining between the respective layers, it is preferable to perform a certain degree of tightening by applying a tape or the like.

That is, when the carbon fiber layer 12 is formed by curing the resin in the carbon fiber prepreg 10a having a large number of carbon fibers, irregularities due to each carbon fiber occur on the surface.
Guide roller 10
This is because it is preferable not to damage the long sheet material 20 guided on the surface. Of course, the surface of the cured resin layer 13 needs to be ground or polished, but such grinding or polishing removes scratches or the like generated on the surface by using the guide roller 10 for a long time. Is also adopted by this,
The guide roller 10 can be reproduced.

In the manufacturing method according to the sixth aspect, when forming the cured resin layer 13 on the surface of the carbon fiber layer 12, the carbon or glass fiber 13b impregnated with the resin 13a is removed by a so-called filament winding method. By winding on the fiber layer 12, carbon or glass fiber 13
b is made to exist. If the guide roller 10 is manufactured by such a method, the resin cured layer 13
Since the carbon or glass fibers 13b are present in the inside, the guide roller 10 having a very high rigidity can be formed together with the carbon fibers in the carbon fiber layer 12, and the resin in the resin cured layer 13 can be formed. Since the amount of the resin 13a can be reduced, the guide roller 10
It also has a sufficient effect on weight reduction.

If the long sheet material 20 is easily charged, such as a raw magnetic tape or a nonwoven fabric, it is necessary to prevent static electricity from being charged during transportation. That is, it is preferable that the guide roller 10 that guides the long sheet material 20 can always discharge static electricity. Such a configuration is the guide roller 10 according to claim 7, and the core material guide roller 10 according to claim 7 is different from the guide roller 10 according to claim 4 or 5 in that the resin cured layer 13 A plating layer 15 for preventing electrification was formed on the surface of the substrate.

Thus, in the guide roller 10 according to the seventh aspect, the presence of the plating layer 15 not only exhibits the same function as the guide roller 10 according to the first or second aspect, but also provides a long sheet. This also serves to prevent the material 20 from being charged. Of course, the presence of the plating layer 15 can improve the abrasion resistance of the guide roller 10 and, when the long sheet material 20 is wound, has sufficient smoothness to prevent breakage thereof. That is, it is possible to have the nature.

[0043]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a guide roller according to an embodiment of the present invention;
The core material 10A according to claims 1 to 3 will be described.
Is manufactured in the process of manufacturing the guide roller 10, and therefore, the following description will focus on the guide roller 10 and its manufacturing method.

FIG. 1 shows a guide roller 10 according to the present invention.
Is schematically shown, the guide roller 10 guides a wide, very long and flexible long sheet material 20, and the guided long sheet material 20 is used. Is wound around the winding core 21 on the right end side in the figure. As shown in FIG. 2, the guide roller 10 is formed using a cylindrical core material 10A as a material.
As shown in FIG. 4, the support members 14 are provided at both ends of the core material 10A.
Are respectively attached. The supporter 14 is provided for rotatably providing the guide roller 10 in the transport path.

As shown in FIG. 3, the guide roller 10 winds a carbon fiber prepreg 10a around an outer periphery of a core metal 11 to be released later, and forms a resin in the carbon fiber prepreg 10a. Is thermally cured to sufficiently bring out the physical properties (high strength) of the carbon fibers in the carbon fiber prepreg 10a. Guide roller 10 of the embodiment shown in FIG.
Then, the carbon fiber layer 12 is changed to the first carbon fiber layer 12a.
And a second carbon fiber layer 12b, and a resin cured layer 13 formed on the surface side of the carbon fiber layer 12, but the resin cured layer 13 is not always necessary. . In other words, if each of the carbon fiber prepregs 10a is made of a material containing a large amount of resin, the carbon fiber prepreg 10a may be formed by itself without actively forming the cured resin layer 13.

As shown schematically in FIGS. 5 and 6, a carbon fiber prepreg 10a for forming the carbon fiber layer 12 is formed by integrating a large number of mutually parallel carbon fibers with a semi-cured resin. It has a very high rigidity and bending strength in the longitudinal direction of each carbon fiber. As shown in FIG. 5 and FIG. 6, this carbon fiber prepreg 10a uses a plurality of
It is most effective to use each carbon fiber in a different direction from the axis of the core bar 11 or the carbon fibers in the other carbon fiber prepreg 10a.

FIG. 5 shows that the carbon fiber prepreg 10a serving as the first carbon fiber layer 12a is arranged so that each carbon fiber in the prepreg 10a is parallel to the axis of the metal core 11, that is, the first predetermined angle is 0 °. The first carbon fiber layer 12a is wound around the carbon fiber prepreg 10a to be the first carbon fiber layer 12a, and each carbon fiber is orthogonal to the carbon fiber in the first carbon fiber layer 12a. That is, in a state where the second predetermined angle is 90 °,
The state which winds another carbon fiber prepreg 10a used as the 2nd carbon fiber layer 12b is shown. FIG. 6 shows that two carbon fiber prepregs 10a are stacked in a state where the carbon fibers are orthogonal to each other, and then the four corners are cut into a substantially rectangular carbon fiber prepreg 10ab. Gold 11
The first carbon fiber layer 12a and the second carbon fiber layer 12b are wound so as to intersect each other at a predetermined angle.

Although air may remain between the carbon fiber prepregs 10a wound on the cored bar 11 as described above, leaving the remaining air as it is has an adverse effect on the strength and the like of the product. The effect may be exerted, so that the effect is preferably performed after the whole is held down by a tape or the like. The tape and the like used here are easily removed by polishing for shaping after curing.

Now, the plurality of carbon fiber prepregs 10a and the carbon or glass fibers 13b sequentially wound on the cored bar 11 as described above are put into a kettle, and the semi-cured resin in the carbon fiber prepreg 10a, The thermosetting of the resin 13a impregnated in the carbon or glass fiber 13b is performed. Thereby, the carbon fiber layer 1
After the hardening layer 2 and the resin hardened layer 13 are sufficiently hardened and integrated, the core metal 11 unnecessary for the guide roller 10 is replaced with the one shown in FIG.
The mold is released (pulled out) as shown in FIG.

After that, as shown in FIG.
Unnecessary parts are cut off, and guide rollers 10 of necessary length are cut off.
However, since the guide roller 10 must be rotatably supported in front of the core 21 as shown in FIG. 1, each guide roller 10 is provided as shown in FIG. The support 14 is attached to the end of the roller 10.
When the support 14 is attached, the support 14 itself is formed as having a portion 14a to be inserted into a hole formed in the center of the guide roller 10 as shown in FIG. It is most efficient to use the adhesive 30 applied around the fitting portion 14a.

The surface of the cured resin layer 13 constituting the surface of the guide roller 10 is ground or polished to provide a smooth surface that can safely support the flexible long sheet material 20. That is.

When the flexible long sheet material 20 is a raw material such as a magnetic tape or the like, each guide roller 10
Alternatively, if the winding core 10A is easily charged with static electricity, it will promote adsorption of dust or the like to the long sheet material 20. Therefore, when the plating layer 15 is formed by metal plating on the surface of each of the guide rollers 10, Good. If such a plating layer 15 is formed, static electricity is released to various places through the plating layer 15, so that each guide roller 10
Alternatively, not only the core material 10A but also the flexible long sheet material 20 may be used.
Is not charged with static electricity.

[0053]

As described in detail above, first, in the invention according to claim 1, as exemplified in the above embodiment,
"A core material 10A for winding a flexible long sheet material 20 such as a paper stock or a magnetic tape stock, and a carbon sheet formed by arranging a large number of carbon fibers in parallel with each other and forming a sheet with a semi-cured resin. A cylindrical carbon fiber layer 12 formed by winding a fiber prepreg 10a around the surface of a cored bar 11 to be released and then thermosetting, and being integrated with the surface of the carbon fiber layer 12 to form a roll. And a cured resin layer 13 containing carbon fibers or glass fibers 13b therein. "Has a structural characteristic, thereby providing the required rigidity, bending strength, and surface hardness to reduce the weight. Thus, it is possible to provide the core material 10A that can achieve the following.

In the invention according to claim 2, the core material 10A according to claim 1 may be referred to as "carbon fiber layer 1".
2 is a first carbon fiber layer 12a in which each carbon fiber is at a first predetermined angle with respect to the axial direction of the cored bar 11, and a second predetermined angle with respect to each carbon fiber of the first carbon fiber layer 12a. In the second, each carbon fiber will intersect
The core material 10A according to claim 2 has sufficient rigidity without impairing the weight reduction. It is a flexible long sheet material 20
Can be prevented from being bent in the core material 10A when the core material 10A is wound in a large amount and rotated at a high speed.

Further, the core material 10 according to claim 3 is characterized in that the core material 10 A according to claim 1 or 2, wherein a plating layer 15 is formed on the surface of the cured resin layer 13. Accordingly, when the long sheet material 20 is easily charged, such as a raw magnetic tape or a nonwoven fabric, it is possible to prevent static electricity from being charged at the time of winding or the like, or The smoothness and abrasion resistance can be improved.

In the invention according to claim 4,
As exemplified in the above-described embodiment, “a flexible long sheet material 20 such as a paper stock or a magnetic tape stock is used for the core 21.
A guide roller 10 that guides the carbon fiber prepreg 10a in which a large number of carbon fibers are arranged in parallel with each other and formed into a sheet with a semi-cured resin is wound around the surface of a core metal 11 to be released. A cylindrical carbon fiber layer 12 formed by heat-curing from a resin cured resin layer 13 containing a wound carbon fiber or glass fiber 13b integrated with the surface of the carbon fiber layer 12 and And the support members 14 fixed to both ends of the cored bar 11, respectively, "have a feature in the configuration thereof, whereby the required rigidity and bending strength are provided, and the weight can be reduced. The guide roller 10 can be provided.

According to the guide roller 10 according to the fifth aspect, the guide roller 10 according to the fourth aspect is characterized in that the carbon fiber layer 12 is formed such that each carbon fiber is in the axial direction of the metal core 11. The first carbon fiber layer 12a at a predetermined angle and the second carbon fiber layer 12b at which each carbon fiber intersects each carbon fiber of the first carbon fiber layer 12a at a second predetermined angle. The present invention provides a guide roller 10 having a bending strength that does not bend even when rotated at a high speed, in addition to being capable of exhibiting the same effects as the invention of the fourth aspect. You can do it.

According to the invention of claim 6, the guide roller 10 according to claim 4 or 5 can be manufactured reliably and easily. Thus, the long sheet material 20 having flexibility can be conveyed while preventing charging or improving smoothness and abrasion resistance.

[Brief description of the drawings]

FIG. 1 is a partial side view showing a use state of a core material or a guide roller according to the present invention.

FIG. 2 is a perspective view of the guide roller.

FIG. 3 is an enlarged sectional view taken along line 1-1 in FIG. 2;

FIG. 4 is a partially enlarged sectional view of an end portion of the guide roller.

FIG. 5 is a perspective view showing an example when two carbon fiber prepregs are wound around a cored bar.

FIG. 6 is a plan view showing another example of winding the carbon fiber prepreg around a core metal in order.

7A and 7B show a manufacturing process of a guide roller according to the present invention. FIG. 7A shows a state in which a carbon fiber prepreg on a metal core is temporarily fixed, and FIG. 7B shows a state in which carbon or glass fiber is put on the carbon fiber prepreg. It is a top view which shows the state each wound.

FIGS. 8A and 8B show the same manufacturing process, wherein FIG. 8A shows a state in which a core is pulled out, FIG. 8B shows a state in which the core is cut out, and FIG. 8C shows a state in which a support is attached to both ends. It is a top view.

[Explanation of symbols]

 Reference Signs List 10 guide roller 10c carbon fiber prepreg 11 core metal 12 carbon fiber layer 12a first carbon fiber layer 12b second carbon fiber layer 13 resin cured layer 13a resin 13b carbon or glass fiber 14 support 20 flexible long sheet material 21 Core 30 Adhesive

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B29K 105: 08 B29L 31:32 F term (Reference) 3F104 AA01 AA04 JA01 JA04 JC07 JC08 JD00 4F100 AD11A AD11B AD11C AG00C AK01C BA03 BA04 BA07 DA11 DG01C DH01A DH01B EA061 EH112 EH71D EH902 EJ082 EJ342 EJ822 EJ932 GB51 JB13C JK01 JK04 JK12 JL03 4F205 AA36 AB18 AD04 AD16 AG03 AG08 AH04 AM12 HA13 HO13 HA03 HF13 HA03 HA01 HT22

Claims (7)

[Claims] 1. A core material for winding a flexible long sheet material such as a paper stock or a magnetic tape stock, wherein a number of carbon fibers are arranged in parallel with each other and formed into a sheet by a semi-cured resin. The obtained carbon fiber prepreg was wound on the surface of the core metal to be released, and then formed into a cylindrical carbon fiber layer formed by thermosetting, and then integrated with the surface of the carbon fiber layer and wound. A core material containing carbon fibers, comprising: a resin cured layer containing carbon fibers or glass fibers therein. 2. The carbon fiber layer according to claim 1, wherein each of the carbon fibers has a first predetermined angle with respect to an axial direction of the metal core.
2. A carbon fiber layer comprising: a carbon fiber layer; and a second carbon fiber layer in which each carbon fiber crosses each carbon fiber of the first carbon fiber layer at a second predetermined angle. The described core material. 3. The core material containing carbon fibers according to claim 1, wherein a plating layer is formed on a surface of the cured resin layer. 4. A guide roller for guiding a flexible long sheet material such as a paper stock or a magnetic tape stock toward a winding core or the like, wherein a large number of carbon fibers are arranged in parallel with each other. A cylindrical carbon fiber layer formed by winding a carbon fiber prepreg formed into a sheet with a semi-cured resin on the surface of a core metal to be released, and then thermosetting, is integrated with the surface of the carbon fiber layer. Characterized by comprising a cured resin layer containing a wound carbon fiber or glass fiber inside, and supports fixed to both ends of the cored bar, respectively. Guide rollers containing fibers. 5. The carbon fiber layer according to claim 1, wherein each of the carbon fibers has a first predetermined angle with respect to an axial direction of the metal core.
5. A carbon fiber layer comprising: a carbon fiber layer; and a second carbon fiber layer in which each carbon fiber crosses each carbon fiber of the first carbon fiber layer at a second predetermined angle. A guide roller comprising the carbon fiber described in the above. 6. Another carbon fiber or glass in which a carbon fiber prepreg in which carbon fibers serving as a carbon fiber layer are parallel to each other is wound around a cored bar, and the surface of which is impregnated with a resin serving as a resin cured layer. After winding the fiber, the resin and the resin in the carbon fiber prepreg are thermally cured to release the core, and the surface of the resin cured layer is ground or polished to obtain a carbon fiber. Guide roller manufacturing method including. 7. The guide roller according to claim 4, wherein a plating layer is formed on a surface of the cured resin layer.