TW201540970A - Roller for sheet material manufacturing - Google Patents

Abstract

This invention is a roller for sheet material manufacturing in which the roller can suppress the reduction of manufacturing precision due to elongation. The roller for sheet material manufacturing 10 comprises roller body 5. The roller body 5 comprises: a first external pipe 1 which contains a fiber-reinforced composite material; a second external pipe 2 which contains a fiber-reinforced composite material; and a connector pipe 3 which is used to create connection between the first external pipe 1 and the second external pipe 2. One end 3a of the connector pipe 3 is inserted into the first external pipe 1 and the other end 3b of the connector pipe 3 is inserted into the second external pipe 2.

Description

Sheet roll

The present invention relates to a roll for sheet production.

Patent Document 1 to Patent Document 3 describe a roll made of a fiber-reinforced resin (fiber-reinforced composite material). Such a fiber-reinforced composite material roll is used for producing a sheet such as a liquid crystal film, a foil, or a paper because of its light weight and high rigidity.

As a method of producing such a fiber-reinforced composite roll, there are a filament winding forming method and a sheet rolling forming method. The roll for sheet production is required to have high dimensional accuracy and geometric tolerances such as straightness, roundness, cylindricity, etc., and therefore, the roll is manufactured by winding a prepreg on a mandrel using a sheet rolling forming method. .

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 6-207614

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2000-191798

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2000-329135

However, with the enlargement of products such as liquid crystal panels, sheets for products such as polarizing plate protective films tend to be wider. Thus, it is required to manufacture a sheet having a wide width, and therefore, a roll having a length corresponding to the width of the sheet is required.

In order to manufacture a sheet having a wide width by using the rolls described in Patent Documents 1 to 3, it is necessary to lengthen one roll (tube). However, in order to manufacture a long roll and to enlarge the apparatus, the roll for the apparatus may be deflected or the like, and the prepreg wound around the mandrel may be deflected. As a result, there is a fear that the manufacturing precision of the roll is lowered.

The present invention provides a roll for producing a sheet having a structure capable of suppressing a decrease in manufacturing precision due to slendering.

A roll for producing a sheet of one aspect of the present invention includes a roll body. The roller body includes a first tube including a fiber-reinforced composite material, a second tube containing a fiber-reinforced composite material, and a connecting tube for connecting the first tube and the second tube. One end of the connecting tube is inserted into the first tube, and the other end of the connecting tube is inserted into the second tube.

In the roll for producing a sheet, the roll system is formed by joining the first pipe and the second pipe by a connecting pipe. Therefore, the length of the roller body can be formed to a desired length by adjusting the length of the first tube and the length of the second tube. That is, the length of the first tube and the length of the second tube can be made smaller than the length of the tube when a desired length is obtained by using one tube. As a result, the length of the roller body can be elongated without lengthening one tube, and the deterioration of the manufacturing precision due to the strip length of the roller can be suppressed. Further, the sheet-like material refers to an object having a relatively thin and long thickness such as a resin film.

The length of the connecting tube may be more than twice the outer diameter of the first tube. In this case, the length of the connecting portion between the first pipe and the second pipe and the connecting pipe can be increased. Therefore, the joint strength can be increased, so that the joint portion can be prevented from being damaged. Further, by increasing the length of the connecting portion between the first pipe and the second pipe and the connecting pipe, the axial displacement of the first pipe and the second pipe can be suppressed, and the axis of the first pipe and the axis of the second pipe can be improved. Straightness.

The outer diameter of the connecting tube may be smaller than the inner diameter of the first tube, that is, the rotational fit, or the difference between the inner diameter of the first tube and the outer diameter of the connecting tube may be 0.03 mm or more and 1.0 mm or less. In this case, the difference between the inner diameter of the first tube and the outer diameter of the connecting tube is ensured to be 0.03 mm. In this case, it is possible to suppress a decrease in workability when the connecting tube is inserted into the first tube. Moreover, the amount by which the joining material used when connecting the outer peripheral surface of the connecting pipe to the inner peripheral surface of the first pipe is scraped can be reduced, and the connection strength between the connecting pipe and the first pipe can be suppressed from being lowered. Further, by making the difference between the inner diameter of the first pipe and the outer diameter of the connecting pipe 1.0 mm or less, it is possible to suppress the displacement of the shaft of the first pipe and the axis of the connecting pipe when the connecting pipe is inserted into the first pipe. Therefore, the axial displacement of the first pipe and the second pipe can be suppressed, and the straightness of the axis of the first pipe and the axis of the second pipe can be improved.

The roll for producing a sheet according to another aspect of the present invention may further include a coating layer for covering the outer circumferential surface of the first tube and the outer circumferential surface of the second tube. The coating layer can be a plating layer. In this case, the surface of the roller can be made smooth, so that the possibility of scratching the sheet can be reduced. The coating layer may also be a rubber layer. In this case, the friction with the sheet can be increased, so that the conveying efficiency of the sheet can be improved.

Still another aspect of the invention for producing a sheet may further include a journal for rotating the roller body about an axis. In this case, the roller body can be rotated about the axis.

According to the present invention, it is possible to suppress a decrease in manufacturing precision due to the strip of the roll.

1‧‧‧Outer tube (1st tube)

1a‧‧‧One end

1b‧‧‧The other end

2‧‧‧Outer tube (2nd tube)

2a‧‧‧End

2b‧‧‧The other end

3‧‧‧Connecting pipe

3a‧‧‧End

3b‧‧‧The other end

5‧‧‧ Roller body

5a‧‧‧End

5b‧‧‧The other end

6‧‧‧covered layer

7‧‧‧ journal

10‧‧‧Rolls for sheet manufacture

10A‧‧‧Roll for sheet production

11‧‧‧ Body Department

12‧‧‧Connecting Department

21‧‧‧ Body Department

22‧‧‧Connecting Department

50‧‧‧Slice rolling device

51‧‧‧ mandrel

52~54‧‧‧roll

A‧‧‧ direction

Dex1‧‧‧ OD

Dex2‧‧‧ OD

Dex3‧‧‧ OD

Din11‧‧‧Down

Din12‧‧‧Down

Din21‧‧‧Down

Din22‧‧‧Down

G‧‧‧Material

L1‧‧‧ length

L2‧‧‧ length

L3‧‧‧ length

L12‧‧‧ length

L22‧‧‧ length

P‧‧‧Prepreg

S01‧‧‧Slice rolling step

S02‧‧‧heat curing step

S03‧‧‧ core removal step

S04‧‧‧Machining steps

S05‧‧‧Next steps

Fig. 1 is a perspective view schematically showing a roll for producing a sheet according to an embodiment.

Fig. 2 is a cross-sectional view schematically showing a section of the roll for sheet production of Fig. 1 taken along line II-II.

Figure 3 is an enlarged view of the periphery of the joint portion of Figure 2.

Fig. 4 is a view showing a step of an example of a method for producing a roll for producing a sheet of Fig. 1;

Fig. 5 is a view schematically showing a sheet rolling apparatus for producing the sheet-making roll of Fig. 1;

Figure 6 is a diagram for explaining the next steps of Figure 4.

Fig. 7 is a cross-sectional view schematically showing a modification of one of the rolls for producing a sheet of Fig. 1;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are used for the same or equivalent elements, and the repeated description is omitted.

Fig. 1 is a perspective view schematically showing a roll for producing a sheet according to an embodiment. Fig. 2 is a cross-sectional view schematically showing a section of the roll for sheet production of Fig. 1 taken along line II-II. Figure 3 is an enlarged view of the periphery of the joint portion of Figure 2. As shown in FIG. 1 to FIG. 3, the sheet manufacturing roller 10 is a long tubular body extending in the direction A, for example, for the production of a sheet such as a polarizing plate protective film such as conveyance and winding. . The sheet manufacturing roll 10 includes a roll body 5. The roller body 5 constitutes a roller portion of the roll 10 for sheet production, and the outer diameter of the roller body 5 is substantially equal over the entire length. The roller body 5 includes an outer tube 1 (first tube), an outer tube 2 (second tube), and a connecting tube 3 (connecting pipe).

The outer tube 1 is a tubular member containing fiber reinforced plastics (FRP). Examples of the reinforcing material for the fiber-reinforced composite material include carbon fiber, glass fiber, and the like. For example, the outer tube 1 is composed of a prepreg having carbon fibers. As the prepreg, for example, a unidirectional prepreg can be used. In order to prevent the occurrence of cracks (i.e., to increase the strength), the outer tube 1 may further comprise a cross-prepreg. The cross prepreg may be a prepreg having carbon fibers or a prepreg having glass fibers.

The outer tube 1 includes a body portion 11 and a joint portion 12. The main body portion 11 and the connecting portion 12 are arranged in the direction A in this order. The connecting portion 12 is provided at the other end 1b of the outer tube 1, and is configured to be fitted into the connecting tube 3.

The outer diameter Dex1 of the outer tube 1 can be determined depending on the intended use, and is, for example, 300 mm or less. The outer diameter Dex1 of the outer tube 1 is substantially equal over the entire length from one end 1a to the other end 1b. The inner diameter Din11 of the body portion 11 of the outer tube 1 is, for example, about 270.0 mm. The inner diameter Din12 of the joint portion 12 of the outer tube 1 is larger than the inner diameter Din11 of the body portion 11 of the outer tube 1, and is, for example, about 270.5 mm.

The length L1 of the outer tube 1 can be produced with high precision using the following sheet rolling apparatus. The length is, for example, 3000 mm or less. The length L12 of the connecting portion 12 is about one-half of the length L3 of the connecting pipe 3, and is, for example, about 600 mm. When the length L12 of the connecting portion 12 is too short, the joint strength becomes small, and the joint portion may be damaged. Further, when the length L12 of the connecting portion 12 is too short, the axis of the outer tube 1 and the outer tube 2 may be shifted (that is, the straightness of the shaft of the outer tube 1 and the axis of the outer tube 2 may be lowered). Therefore, the length L12 of the connecting portion 12 can be, for example, one or more times the outer diameter Dex1 of the outer tube 1. On the other hand, when the length L12 of the connecting portion 12 is too long, the workability when the connecting tube 3 is inserted into the outer tube 1 is lowered. Further, when the length L12 of the connecting portion 12 is too long, the apparatus for processing the connecting portion 12 is increased in size, and processing may not be possible. Therefore, the length L12 of the connecting portion 12 can be, for example, three times or less the outer diameter Dex1 of the outer tube 1.

The outer tube 2 is a tubular member containing a fiber reinforced composite material. Examples of the reinforcing material for the fiber-reinforced composite material include carbon fiber, glass fiber, and the like. For example, the outer tube 2 is composed of a prepreg having carbon fibers. As the prepreg, for example, a unidirectional prepreg can be used. In order to prevent the occurrence of cracks (i.e., to increase the strength), the outer tube 2 may further comprise a cross-prepreg. The cross prepreg may be a prepreg having carbon fibers or a prepreg having glass fibers. One end 2a of the outer tube 2 abuts against the other end 1b of the outer tube 1.

The outer tube 2 includes a body portion 21 and a joint portion 22. The connecting portion 22 and the main body portion 21 are arranged in the direction A in order. The connecting portion 22 is provided at one end 2a of the outer tube 2, and is configured to be fitted into the connecting tube 3.

The outer diameter Dex2 of the outer tube 2 is substantially the same as the outer diameter Dex1, and can be determined depending on the intended use, and is, for example, 300 mm or less. The outer diameter Dex2 of the outer tube 2 is substantially equal over the entire length from one end 2a to the other end 2b. The inner diameter Din21 of the body portion 21 of the outer tube 2 is, for example, about 270.0 mm. The inner diameter Din22 of the joint portion 22 of the outer tube 2 is larger than the inner diameter Din21 of the body portion 21 of the outer tube 2, and is, for example, about 270.5 mm.

The length L2 of the outer tube 2 can be a length of a range which can be produced with high precision using a sheet rolling apparatus, and is, for example, 3000 mm or less. The length L22 of the connecting portion 22 is about one-half of the length L3 of the connecting pipe 3, and is, for example, about 600 mm. When the length L22 of the connecting portion 22 is too short, the joint strength becomes small, and the joint portion may be damaged. Moreover, if the length L22 of the connecting portion 22 is too short, Sometimes, the axis of the outer tube 1 and the outer tube 2 are offset (that is, the straightness of the axis of the outer tube 1 and the outer tube 2 is lowered). Therefore, the length L22 of the connecting portion 22 can be, for example, one or more times the outer diameter Dex2 of the outer tube 2. On the other hand, when the length L22 of the connecting portion 22 is too long, the workability when the connecting tube 3 is inserted into the outer tube 2 is lowered. Further, when the length L22 of the connecting portion 22 is too long, the apparatus for processing the connecting portion 22 is increased in size, and processing may not be possible. Therefore, the length L22 of the connecting portion 22 can be, for example, three times or less the outer diameter Dex2 of the outer tube 2.

The connecting pipe 3 is a tubular member for connecting the outer pipe 1 and the outer pipe 2. The connecting pipe 3 contains, for example, a fiber reinforced composite material. As the reinforcing material for the fiber-reinforced composite material, there are carbon fibers, glass fibers, and the like. In other words, the connecting tube 3 is configured to include a prepreg having fibers such as carbon fibers and glass fibers. As the prepreg, for example, a unidirectional prepreg or a cross prepreg can be used. Since the connecting pipe 3 is not required to have rigidity, the ratio of the glass fibers of the connecting pipe 3 may be larger than the ratio of the glass fibers of the outer pipe 1 and the outer pipe 2 in order to reduce the cost.

One end 3a of the connecting pipe 3 is inserted and fixed to the joint portion 12 of the outer pipe 1, and the other end 3b of the connecting pipe 3 is inserted and fixed to the joint portion 22 of the outer pipe 2. In other words, the inner circumferential surface of the connecting portion 12 of the outer tube 1 and the outer circumferential surface of the one end 3a side of the connecting tube 3 are fixed to each other, for example, via the adhesive material G. Further, the inner peripheral surface of the joint portion 22 of the outer tube 2 and the outer peripheral surface of the other end 3b side of the connecting tube 3 are fixed to each other, for example, via the joining material G. As the adhesive material G, for example, an epoxy-based adhesive can be used. Subsequent material G can be used in any of the two-liquid mixing type and one-liquid type depending on the application.

The outer diameter Dex3 of the connecting pipe 3 is smaller than the inner diameter Din12 of the connecting portion 12 of the outer pipe 1 and the inner diameter Din22 of the connecting portion 22 of the outer pipe 2, and is, for example, about 270.0 mm. The outer diameter Dex3 of the connecting pipe 3 is substantially equal over the entire length from the one end 3a to the other end 3b. If the inner diameter Din12 of the connecting portion 12 of the outer tube 1 or the inner diameter Din22 of the connecting portion 22 of the outer tube 2 and the outer diameter Dex3 of the connecting tube 3 are too small, the connecting tube 3 is inserted into the outer tube 1 and The workability at the time of the outer tube 2 is lowered, and in some cases, the material G is scraped off, resulting in a decrease in the joint strength. Therefore, the gap can be, for example, 0.03 mm or more. Moreover, if the gap is too large, the outer tube 1 and the outer tube may be generated. 2 axis offset (the straightness of the axis of the outer tube 1 and the axis of the outer tube 2 is reduced). Therefore, the gap can be, for example, 1.0 mm or less.

The length L3 of the connecting pipe 3 is, for example, about 1200 mm. When the length L3 of the connecting pipe 3 is too short, the joint strength becomes small, and the joint portion may be damaged. Further, when the length L3 of the connecting pipe 3 is too short, the axis of the outer pipe 1 and the outer pipe 2 may be shifted (that is, the straightness of the axis of the outer pipe 1 and the outer pipe 2 may be lowered). Therefore, the length L3 of the connecting pipe 3 can be, for example, twice or more the outer diameter Dex1 of the outer pipe 1 and the outer diameter Dex2 of the outer pipe 2. On the other hand, when the length L3 of the connecting pipe 3 is too long, the workability when the connecting pipe 3 is inserted into the outer pipe 1 and the outer pipe 2 is lowered. Further, when the length L3 of the connecting pipe 3 is too long, the apparatus for processing the connecting portion 22 of the outer pipe 1 and the connecting portion 22 of the outer pipe 2 is increased in size, and processing may not be possible. Therefore, the length L3 of the connecting pipe 3 can be, for example, 6 times or less the outer diameter Dex1 of the outer pipe 1 and the outer diameter Dex2 of the outer pipe 2.

In the sheet manufacturing roll 10, the outer tube 1 and the outer tube 2 are connected to each other by the other end 1b of the tube 1 other than the connecting tube 3 and the one end 2a of the outer tube 2, and the outer tube 1 and the outer tube are connected. The tube 2 is arranged coaxially in the direction A.

Next, an example of a method of manufacturing the sheet-form manufacturing roll 10 will be described. Fig. 4 is a view showing a step of an example of a method of manufacturing the sheet-making roll 10. Fig. 5 is a view schematically showing a sheet rolling apparatus for producing a roll 10 for sheet production. As shown in FIG. 4, the manufacturing method of the sheet manufacturing roll 10 includes a sheet rolling step S01, a heat curing step S02, a core removing step S03, a machining step S04, and a subsequent step S05.

First, as a pre-preparation, the reinforcing fibers for each of the outer tube 1, the outer tube 2, and the connecting tube 3 are formed into a prepreg P. Each of the prepregs P is formed by immersing a matrix resin in each of the reinforcing fibers and forming a sheet. Then, the outer tube 1, the outer tube 2, and the connecting tube 3 are respectively produced by the sheet rolling step S01, the heat curing step S02, and the core removing step S03.

Specifically, in the sheet rolling step S01, the mandrel 51 is rotated by the three rolls 52 to 54 using the sheet rolling apparatus 50 shown in FIG. 5, and each prepreg P is wound around the mandrel 51. . Then, in the thermal curing step S02, the winding is performed on the mandrel in the sheet rolling step S01. The prepreg P is fixed by winding a heat shrinkable tape made of polypropylene, PET (polyethylene terephthalate) or the like on the outer surface of the prepreg 51 of 51. Then, the prepreg P is placed in a heating furnace and heated at a temperature of, for example, about 130 ° C to 180 ° C to cure the matrix resin contained in the prepreg P. Then, in the core removing step S03, the cured prepreg P is cooled to room temperature, after which the heat shrinkable tape is removed, and the mandrel 51 is pulled out. In this manner, the outer tube 1, the outer tube 2, and the connecting tube 3 are separately produced.

Then, in the machining step S04, the outer tube 1, the outer tube 2, and the connecting tube 3 are machined. Specifically, the inner peripheral surface of the outer tube 1 from the other end 1b toward the one end 1a is a portion having a length L12, and the inner diameter of the portion is Din12 so as to form the joint portion 12. In the same manner, the inner peripheral surface of the outer tube 2 from the one end 2a toward the other end 2b is a portion of the length L22, and the inner diameter of the portion is Din22 so as to form the joint portion 22. Moreover, the outer peripheral surface of the connection pipe 3 is polished so that the outer diameter becomes Dex3. In this manner, the gap between the inner circumferential surface of the outer tube 1 and the outer tube 2 and the outer circumferential surface of the connecting tube 3 is ensured.

Then, as shown in FIG. 6, in step S05, the bonding material is applied to the outer peripheral surface of the connecting pipe 3 which is ground in the machining step S04. Then, one end 3a of the connecting tube 3 is inserted into the connecting portion 12 from the other end 1b of the outer tube 1, and the other end 3b of the connecting tube 3 is inserted into the connecting portion 22 from one end 2a of the outer tube 2. Then, the other end 1b of the outer tube 1 abuts against one end 2a of the outer tube 2, and the outer tube 1 and the outer tube 2 are pushed in from the both end sides of the connecting tube 3 to achieve a rotational fit. In this manner, a roll 10 for sheet production is produced.

In the roll 10 for sheet production which is configured as described above, the roll main body 5 is formed by connecting the outer tube 1 and the outer tube 2 by the connecting tube 3. Therefore, the length of the roller body 5 can be formed to a desired length by adjusting the length L1 of the outer tube 1 and the length L2 of the outer tube 2. That is, the length L1 of the outer tube 1 and the length L2 of the outer tube 2 can be made smaller than the length of the tube when the desired length is obtained by using one tube. As a result, the strip body 5 can be elongated without elongating one tube, and it is possible to suppress a decrease in production precision due to the strip length of the roll. Also, along with this, it can be suppressed The sheet rolling apparatus is increased in size, so that an increase in cost can be suppressed.

Further, the length L3 of the connecting pipe 3 may be twice or more the outer diameter Dex1 of the outer pipe 1 and the outer diameter Dex2 of the outer pipe 2. In this case, the length of the joint portion between the outer tube 1 and the joint tube 3 and the length of the joint portion between the outer tube 2 and the joint tube 3 can be increased. Therefore, the joint strength can be increased, so that the joint portion can be prevented from being damaged. Further, by increasing the length of the connecting portion between the outer tube 1 and the connecting tube 3 and the length of the connecting portion between the outer tube 2 and the connecting tube 3, the axial displacement of the outer tube 1 and the outer tube 2 can be suppressed, thereby improving the outer diameter. The straightness of the axis of the tube 1 and the axis of the outer tube 2.

Further, the length L3 of the connecting pipe 3 may be six times or less the outer diameter Dex1 of the outer pipe 1 and the outer diameter Dex2 of the outer pipe 2. In this case, it is possible to suppress a decrease in workability when the connecting tube 3 is inserted into the outer tube 1 and the outer tube 2. Moreover, the joint portion 22 of the outer tube 1 and the joint portion 22 of the outer tube 2 can be processed without using a large-sized device.

Further, the outer diameter Dex3 of the connecting tube 3 may be smaller than the inner diameter Din12 of the connecting portion 12 of the outer tube 1 and the inner diameter Din22 of the connecting portion 22 of the outer tube 2, and the inner diameter Din12 of the connecting portion 12 of the outer tube 1 may be The difference (gap) between the inner diameter Din22 of the connecting portion 22 of the outer tube 2 and the outer diameter Dex3 of the connecting tube 3 is 0.03 mm or more. In this case, it is possible to suppress a decrease in workability when the connecting tube 3 is inserted into the outer tube 1 and the outer tube 2. Moreover, the amount of the backing material G scraped off when the outer circumferential surface of the connecting pipe 3 is connected to the inner circumferential surface of the connecting portion 12 of the outer pipe 1 and the inner circumferential surface of the connecting portion 22 of the outer pipe 2 can be reduced. The connection strength between the connection pipe 3 and the outer pipe 1 and the outer pipe 2 is suppressed from being lowered.

Further, the gap may be 1.0 mm or less. In this case, it is possible to suppress the offset of the shaft of the outer tube 1 and the shaft of the connecting tube 3 when the connecting tube 3 is inserted into the outer tube 1, and the axis of the outer tube 2 when the connecting tube 3 is inserted into the outer tube 2 The offset of the axis of the connecting tube 3. That is, the axial shift of the outer tube 1 and the outer tube 2 can be suppressed, so that the straightness of the shaft of the outer tube 1 and the outer tube 2 can be improved.

Although an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the roller body 5 of the roll 10 for sheet production of the above-described embodiment is formed by connecting two outer tubes 1 and 2 by one connecting tube 3, but three or more connecting tubes may be connected by three or more connecting tubes. Outside the tube. That is, the roll body 5 of the roll 10 for sheet production may be used. In addition to the outer tube 1 and the outer tube 2, it further includes one or more outer tubes, and further includes a connecting tube for connecting adjacent outer tubes to each other. In this case, the tube is located at both ends of the roller body 5, and the tube has a connecting portion at one end, and the other outer tube has a connecting portion at both ends.

Further, the connecting pipe 3 is not limited to the reinforcing fiber composite material, and may be made of a metal such as aluminum.

Fig. 7 is a cross-sectional view schematically showing a modification of one of the rolls for producing a sheet. As shown in FIG. 7, the sheet manufacturing roll 10A differs from the sheet manufacturing roll 10 in that it further includes a coating layer 6 and a journal 7.

The coating layer 6 is used to cover the outer peripheral surface of the roller body 5. In this example, the covering layer 6 covers the outer peripheral surface of the outer tube 1 and the outer peripheral surface of the outer tube 2. The coating layer 6 may be, for example, a plating layer or a rubber layer.

The journal 7 is a rotating shaft for rotating the roller body 5 about the axis. The journals 7 are respectively provided at one end 5a and the other end 5b of the roller body 5. In this example, the journals 7 are respectively provided at one end 1a of the outer tube 1 and the other end 2b of the outer tube 2.

In the case of the sheet-forming roll 10A, the same effects as those of the above embodiment can be obtained. Further, in the sheet-form producing roller 10A, when the coating layer 6 is a plating layer, the surface of the roller can be made smooth, and the possibility of scratching the sheet can be reduced. Further, in the sheet-form producing roller 10A, when the coating layer 6 is a rubber layer, the friction with the sheet can be increased, and the conveying efficiency of the sheet can be improved. Further, in the sheet manufacturing roller 10A, the roller body 5 can be rotated about the shaft by providing the journal 7.

(Example)

Hereinafter, the present invention will be more specifically described based on examples and comparative examples, but the present invention is not limited to the following examples.

[Example 1]

Carbon fiber prepreg of JX Nippon Mining & Energy Co., Ltd., E8026C-25N (asphalt high elastic carbon fiber: XN-80 made of Japanese graphite fiber, fiber tensile modulus: 780GPa, CF unit area weight: 250g/ m ² , resin content: 31% by weight), B24N33C269 (PAN-based carbon fiber: TR50S manufactured by Mitsubishi Rayon, fiber tensile modulus: 240 GPa, CF basis weight: 270 g/m ² , resin content: 33% by weight), The glass fiber prepreg EAF26B-16G (E glass fiber, GF unit weight: 160 g/m ² , resin content: 35% by weight) was used to produce the first tube and the second tube by sheet rolling. Both the first tube and the second tube have an outer diameter of 120 mm, an inner diameter of 100 mm, a length of 3000 mm, and an axial elastic modulus of 150 GPa.

Further, a carbon fiber prepreg B24N33C269 and a glass fiber prepreg EAF26B-16G of JX Nippon Mining & Energy Co., Ltd. were used to produce a connecting pipe by a sheet rolling method. The connecting tube has an outer diameter of 102 mm, an inner diameter of 90 mm, a length of 500 mm, and an axial elastic modulus of 100 GPa.

Then, the inner peripheral surface of the end portion on the side of each of the first tube and the second tube was polished to a depth of 260 mm so that the inner diameter was 100.5 mm, thereby forming a joint portion. Moreover, the joining pipe was subjected to a grinding process on the outer peripheral surface so that the outer diameter thereof was 100.0 mm. A two-liquid mixing type epoxy resin is applied to the outer peripheral surface of the first pipe and the second pipe and the outer surface of the connecting pipe, and the first pipe and the second pipe are joined by a connecting pipe. Then, the epoxy adhesive was cured to obtain a long roll having a length of 6000 mm and an outer diameter of 120 mm.

[Embodiment 2]

The first tube and the second tube were produced by the same method using the same material as in Example 1. Both the first tube and the second tube have an outer diameter of 120 mm, an inner diameter of 100 mm, and a length of 3000 mm. Further, the axial elastic modulus was 210 GPa by changing the mixing ratio with the prepreg used as compared with Example 1. Further, the same as in the first embodiment was produced for the connection pipe system.

Then, the inner peripheral surface of the end portion on the side of each of the first tube and the second tube is polished to a depth of 260 mm so as to have an inner diameter of 100.5 mm, thereby forming Linkage. Moreover, the joining pipe was subjected to a grinding process on the outer peripheral surface so that the outer diameter thereof was 100.0 mm. A two-liquid mixing type epoxy resin is applied to the outer peripheral surface of the first pipe and the second pipe and the outer surface of the connecting pipe, and the first pipe and the second pipe are joined by a connecting pipe. Then, the epoxy adhesive was cured to obtain a long roll having a length of 6000 mm and an outer diameter of 120 mm.

[Comparative Example 1]

As the carbon fiber, a long roll was produced by a filament winding method using XN-60 (fiber tensile modulus: 600 GPa) made of Japanese graphite fiber and TR50S (fiber tensile modulus: 240 GPa) manufactured by Mitsubishi Rayon. The long roll has an outer diameter of 120 mm, an inner diameter of 100 mm, a length of 6000 mm, and an axial elastic modulus of 200 GPa.

(Static vibration measurement)

The both ends of the long rolls of Example 1, Example 2 and Comparative Example 1 were held on a rotating roll, and each long roll was rotated to measure the deflection of the central portion of each long roll, and the maximum and minimum deflection were obtained. The difference between the values is used as static vibration. In the long roll of Example 1, the static vibration at the center portion was 0.05 mm. In the long roll of Example 2, the static vibration at the center portion was 0.03 mm. In the long roll of Comparative Example 1, the static vibration at the center portion was large and was 0.18 mm. Thus, the long rolls of Example 1 and Example 2 had excellent static vibration performance compared to the long rolls of Comparative Example 1. From the above, it was confirmed that in the first and second embodiments, the roll length can be made without lowering the manufacturing precision.

1‧‧‧Outer tube (1st tube)

1a‧‧‧One end

1b‧‧‧The other end

2‧‧‧Outer tube (2nd tube)

2a‧‧‧End

2b‧‧‧The other end

3‧‧‧Connecting pipe

3a‧‧‧End

3b‧‧‧The other end

5‧‧‧ Roller body

5a‧‧‧End

5b‧‧‧The other end

10‧‧‧Rolls for sheet manufacture

11‧‧‧ Body Department

12‧‧‧Connecting Department

21‧‧‧ Body Department

22‧‧‧Connecting Department

A‧‧‧ direction

Dex1‧‧‧ OD

Dex2‧‧‧ OD

L1‧‧‧ length

L2‧‧‧ length

Claims (7)

A sheet manufacturing roll comprising a roll body, wherein the roll body comprises: a first tube comprising a fiber reinforced composite material; a second tube comprising a fiber reinforced composite material; and a connecting tube for joining the above The first tube and the second tube; and one end of the connecting tube is inserted into the first tube, and the other end of the connecting tube is inserted into the second tube. The sheet for producing a sheet according to claim 1, wherein the length of the connecting tube is twice or more the outer diameter of the first tube. The roll for producing a sheet according to claim 1 or 2, wherein an outer diameter of the connecting tube is smaller than an inner diameter of the first tube, and a difference between an inner diameter of the first tube and an outer diameter of the connecting tube is 0.03 mm or more And less than 1.0mm. The roll for sheet production according to any one of claims 1 to 3, further comprising a coating layer for covering the outer circumferential surface of the first tube and the outer circumferential surface of the second tube. The roll for sheet production of claim 4, wherein the coating layer is a plating layer. The roll for sheet production of claim 4, wherein the coating layer is a rubber layer. The sheet manufacturing roll according to any one of claims 1 to 6, further comprising a journal for rotating the roller body about the shaft.