JP2570079Y2 - Roll made of fiber reinforced plastic - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a fiber reinforced plastic (FRP) which can be preferably used in the production process of a wide sheet material such as a synthetic resin film, cloth, paper, woven fabric, etc., which requires a long roll. ) Rolls.

[0002]

2. Description of the Related Art For example, in the process of manufacturing a synthetic resin film, a long roll sometimes exceeding 5 m is required. Also, in the processing step of the fabric, 10 m
In some cases, an extra long roll is required.

Conventionally, most of such rolls are made of metal because the surface uniformity and smoothness can be easily obtained. However, metal rolls are heavy and have low inertia. Because of its large size, its ability to follow rotation is poor,
Therefore, there is a problem that it is difficult to perform delicate speed control, and it is difficult to cope with a recent increase in speed. Another problem is that the replacement work is troublesome because of the heavy weight. Therefore, attention has been paid to FRP rolls that can be made lighter.

[0004] For example, Japanese Utility Model Publication No. 2-1407,
Japanese Utility Model Publication No. 2-32431, Japanese Utility Model Publication No. 3-61212, Japanese Utility Model Publication No. 3-8404, Japanese Patent Publication No. 3-12541
Japanese Patent Application Laid-Open Publication No. H11-15064 discloses a roll made of FRP in which a roll body is made of FRP and the surface is lined with resin or rubber or metal plating is applied. These FRP
Rolls are generally formed by filament winding or sheet wrapping using prepreg sheets, are lighter in weight, have less inertia, have better followability, controllability of speed, and are easier to replace than metal rolls. There is an advantage that is. However, although depending on the diameter, the length is at most 3 to 4 due mainly to manufacturing restrictions such as the size of the molding machine and the deflection of the mandrel due to its own weight.
m is the limit.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the conventional FRP roll and to provide an FRP roll which can be made longer.

[0006]

In order to achieve the above object, the present invention basically has the following configuration. Immediately
Chi, it seamed at least two rolls single of fiber-reinforced plastic in series, on the inner side of the seaming portion, the cylindrical body made of the same fiber-reinforced plastic and the role itself across the roll itself the adjacent It is made of a fiber-reinforced plastic roll or a fiber-reinforced plastic , which is press-fitted and provided with an annular groove for retaining the adhesive and bonded to the roll itself.
Splice at least two rolls in series
Inside the spliced part,
Is it the same fiber-reinforced plastic as the roll itself?
A cylindrical body is press-fitted and adhered to the roll itself,
The roll has an arrangement angle of 5 to 45 with respect to the axial direction of the roll.
° and reinforcing fibers within the range of
The row angle is greater at the end than at the center in the axial direction of the roll.
Fiber reinforced plus, which is larger
Tick roll.

[0007] Included in fiber reinforced plastic rolls
The arrangement angle of the reinforcing fibers is 5 to 45 with respect to the axial direction of the roll.
° or in the axial direction of the roll.
The end of the roll is larger than the
An inner layer in the range of 15 to 45 ° with respect to the axial direction;
Also preferred are those containing an outer layer within the range of ~ 20 °.
New

The roll itself is made of high-strength, high-modulus fibers such as carbon fibers, glass fibers, and polyaramid fibers as reinforcing fibers, and is thermoset of epoxy resin, unsaturated polyester resin, vinyl ester resin, phenol resin, polyimide resin, etc. It is made of FRP using a conductive resin as a matrix.

The roll itself can be formed by a well-known filament winding method or a sheet wrapping method using a prepreg such as a unidirectional prepreg or a textile prepreg. At this time, the arrangement angle of the reinforcing fibers with respect to the axial direction and the amount of the reinforcing fibers are controlled so that desired physical properties such as strength and elastic modulus are imparted to the single roll.

The arrangement angle of the reinforcing fibers may be fixed or different in the axial direction and / or the thickness direction. In the former case, although it depends on the diameter and length of the roll itself, the range is 5 to 45 ° with respect to the axial direction so that desired strength and elastic modulus can be obtained in both the axial direction and the circumferential direction. Is preferred. In the latter case, for example, the arrangement angle at the end portion can be larger than that at the center portion within a range of 5 to 45 ° with respect to the axial direction. This configuration is limited to the case of the filament winding method, but is preferable for preventing the central portion from bending. Further, when the inner layer is set at 15 to 45 ° and the outer layer is set at 5 to 20 ° with respect to the axial direction, the bending strength is particularly improved. In this case, it is more effective to distribute the reinforcing fibers so that the outer layer is about 1 to 3 with respect to the inner layer 1. It is preferable to arrange a woven prepreg on the outermost layer when forming by a sheet wrapping method using a filament winding method or a unidirectional prepreg, since the smoothness of the surface is improved. Regardless of the molding method, the innermost layer has a thickness of 85 to 9 with respect to the axial direction.
It is preferable to provide a 0 ° layer because not only the mandrel can be easily removed after molding, but also the strength against bending buckling and diametrical compression can be improved.

On the other hand, the amount of the reinforcing fibers varies depending on the kind, arrangement angle, arrangement pitch, layer constitution and the like, but is preferably 55 to 70% by volume content.

The length of a single roll is preferably long so that the number of seams is reduced. For example, if the length is 5
In the case of a roll having a length of m, two rolls each having a length of 2.5 m are used. Further, each roll may be the same, but for example, when three rolls are joined, the middle one has reinforcing fibers of 5 to 2 in the axial direction.
It is assumed that they are arranged at 0 ° and the two fibers arranged on both sides thereof are different from each other, such as reinforcing fibers arranged at 15 to 45 ° with respect to the axial direction. It is preferable when it is possible to obtain.

In the spliced portion, the rolls may be simply butt-joined, or a wedge-shaped process or a stepped process may be applied to the spliced end, and the portion may be engaged.

The cylinder to be press-fitted into the joint is made of the same FRP as the roll alone. This will not only make the whole roll lighter,
The entire roll and the cylinder now show the same thermal behavior,
In addition, the same dimensional change is exhibited with respect to an external force.

The length of the cylindrical body varies depending on the diameter of the roll itself. Generally, when the diameter of the roll alone is d, it is in the range of d to 3d. By doing so, it is possible to reliably avoid a problem such as bending at the joint portion.

The cylindrical body is provided with a taper on the inner surface of the end so that no significant stress concentration occurs at the end of the cylindrical body at the end of the cylindrical body when a bending force is applied to the roll. It is preferable to make it thinner.

The cylindrical body may be provided with an annular convex portion for positioning thereof, while the roll itself may be provided with an annular concave portion corresponding to the above-mentioned convex portion. Then, it is possible to easily regulate the mutual position between the cylindrical body and the roll unit.

The roll itself and the cylinder are bonded with an adhesive in addition to press-fitting the cylinder. As the adhesive, an epoxy-based, rubber-based, or other synthetic resin-based adhesive can be used. At this time, a depth of 0.
An annular groove for retaining the adhesive of about 2 to 1 mm is provided.
If a roll is provided with an adhesive injection port and an overflow port, and the adhesive is press-fitted from the injection port so that the adhesive stays in the annular groove, stronger bonding can be achieved. When the annular groove for retaining the adhesive is provided, the depth is not uniform, and the depth is gradually increased in the groove width direction. Correspondingly, an inlet and an overflow port are provided, and the adhesive is press-fitted from the inlet and overflows from the overflow port, so that a fixed flow of the adhesive can be formed, so that the inside of the annular groove can be formed. The displacement of air is facilitated, and the adhesive strength is further improved.

The surface of the roll may be the FRP as it is. However, depending on the application, a lining of a resin such as an epoxy resin or a phenol resin, or a rubber such as a nitrile rubber, a styrene rubber, a butyl rubber, or a silicone rubber is used. Or for the purpose of improving hardness, wear resistance, etc.
Plating such as hard chrome may be applied. When hard chromium plating is applied, if a base plating layer of copper or nickel or copper and nickel is applied, stronger plating can be performed, and peeling of the plating film can be prevented. Also, since FRP has no conductivity or has low conductivity, when using electroplating for plating, a conductive material such as silver is applied to the roll surface in order to increase plating speed and increase efficiency. A conductive layer such as an epoxy resin containing a metal is provided, or a conductivity-imparting agent such as carbon black, milled fiber of carbon fiber, aluminum powder, or the like is mixed in advance into the thermosetting resin constituting the roll alone. Good.

According to this invention, a long roll having a bending elastic modulus of 13 tons / mm ² or more and a length exceeding 5 m can be easily obtained.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a roll body 3 has two rolls.
It has rolls 1, 2 joined together at their wedge-shaped ends. The end of the roll body 3 is made of metal,
Other journals 4 and 5 made of FRP are adhered.

A cylindrical body 6 is press-fitted inside the joints of the rolls 1 and 2 and bonded to the rolls 1 and 2. The positioning between the rolls 1 and 2 and the cylinder 6 is as follows.
An annular convex portion 13 provided on the cylindrical body 6 and an annular concave portion 1 provided on an inner surface of a joint portion of the rolls 1 and 2 to be engaged with the annular convex portion 13.
4 is performed. The depth of the outer circumferential surface of the cylindrical body 6 is gradually increased in the groove width direction.
The annular grooves 7 and 8 for retaining the adhesive are provided, while the rolls 1 and 2 have adhesive inlets 9 and 10 and overflow ports 11 corresponding to the shallow portions of the annular grooves 7 and 8. 1
2 are provided. The bonding between the rolls 1 and 2 and the cylindrical body 6 is performed by press-fitting the adhesive from the inlets 9 and 10 in the state shown in FIG.
This is performed by stopping the press-fitting at the point of overflow from the overflow ports 11 and 12 and solidifying the adhesive.

[0023]

[Effect of the invention] The roll of the invention is formed by joining at least two rolls made of FRP in series,
A cylindrical body made of the same fiber-reinforced plastic as the roll itself is press-fitted into the spliced portion and is bonded to the roll itself. It can be easily obtained even with a roll of length. Further, since the cylinder to be press-fitted into the joint portion is made of the same FRP as the roll alone, not only can the entire roll be made lighter, but also the entire roll and the cylinder have the same thermal properties. Behavior and the same dimensional change with respect to external force. Of course, the roll itself and the cylinder are both FRP, so they are lightweight, have low inertia, have good follow-up with rotation, and are delicate in speed control, and can sufficiently cope with high speed. Also, the replacement work becomes very easy because of its light weight.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional front view showing an embodiment of a roll made of FRP of the present invention.

[Description of Signs] 1: Single roll 2: Single roll 3: Single roll 4: Journal 5: Journal 6: Cylindrical body 7: Annular groove for retaining adhesive 8: Annular groove for retaining adhesive 9: Adhesive Injection port 10: Injection port of adhesive 11: Overflow port of adhesive 12: Overflow port of adhesive 13: Annular convex part 14: Annular concave part

Claims (7)

(57) [Scope of request for utility model registration] At least two rolls made of fiber reinforced plastic are joined in series, and the inside of the joining portion is made of the same fiber reinforced plastic as that of the roll alone over an adjacent roll. A fiber reinforced plastic roll characterized in that a cylindrical body is press-fitted, and an annular groove for retaining an adhesive is provided and bonded to a roll alone. 2. The adhesive is press-fitted into the annular groove for retaining the adhesive.
The fiber reinforced plus according to claim 1, wherein the fiber reinforced plus has a cutout inlet.
Chick roll. 3. The method according to claim 1, wherein an annular groove for retaining the adhesive is provided on the outer peripheral surface of the cylindrical body, and a depth of the annular groove is gradually increased in a groove width direction. Roll made of fiber reinforced plastic. 4. At least made of fiber reinforced plastic
Two rolls are joined in series and joined
Inside the part, the roll spans the adjacent roll alone.
Of the same fiber-reinforced plastic as the
It is press-fitted and adhered to the roll itself.
The row angle is in the range of 5 to 45 ° with respect to the axial direction of the roll.
Contains reinforcing fibers, and arrangement angle of the reinforcing fibers, fiber-reinforced plastic rolls, characterized in that towards the end portion than the central portion in the axial direction of the roll is large. 5. An arrangement angle of a reinforcing fiber contained in a roll,
Including an inner layer in the range of 15 to 45 ° and an outer layer in the range of 5 to 20 ° with respect to the axial direction of the roll,
The fiber reinforced plastic roll according to claim 1. 6. A cylindrical body is, when the diameter of the roll itself and d, have a length within the range of D～3d, claim 1
5. The fiber-reinforced plastic roll according to any one of 5 . 7. taper end inner surface of the cylindrical body is applied, the thickness of the cylindrical body is gradually thinner toward the end, the fiber-reinforced plastic roll according to any one of claims 1-6.