JPH09314662A - Metal surface elastic roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a temp. rise. SOLUTION: A tube 21 having elasticity is wound around a shaft roll 20 and a metal surface member 22 having a cylindrical shape as a whole and having a mirror surface or an embossed surface is arranged outside the tube 2. By allowing cooling water to flow in the tube 21 to expand the tube 21, the tube 21 is brought into contact with the inner peripheral surface of a metal surface member 22 and, thereafter, the shaft roll 20 and the metal surface member 22 are connected and fixed by a connection member 23. Further, both end parts of the tube 21 are connected to a piping and cooling water is circulated between the roll main body 11 and a temp. regulating means regulating the water temp. thereof. By this constitution, a metal surface elastic roll is cooled to constant temp. by cooling water and the temp. rise thereof is avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal surface elastic roll, and relates to a roll for thinning (glossing) or embossing (texturing) the surface of a thermoplastic resin sheet or film, or forming a thin film. It can be used for forming a roll for forming a film.

[0002]

BACKGROUND ART Conventionally, when forming and processing a thermoplastic resin sheet or film, in particular, a softened or melted resin film is cooled and solidified to form a sheet or film, and at the same time, gloss (gloss) processing is performed. When performing or embossing (texturing), a metal roll and a rubber roll having a mirror surface or an embossed surface (a surface having an uneven pattern) are widely used.

FIG. 6 shows a general situation when processing is carried out by such a metal roll 80 and a rubber roll 81. In the case of FIG. 6, the sheet or film 82 in the softened region or melted is sandwiched between the metal roll 80 and the rubber roll 81, and the rolls 80 and 81 are pressed against the sheet or film 82, so that the metal The gloss or embossed pattern on the surface of the roll 80 is transferred to the sheet or film 82. At this time, the rubber roll 81 is elastically deformed, and the metal roll 80 in the state where the sheet or film 82 is sandwiched therebetween.
The contact portion 84 between the rubber roll 81 and the rubber roll 81 is in surface contact.

The case of FIG. 6 has the following advantages. That is, in general, when the transfer is performed by combining a metal roll having a high hardness and a metal roll and sandwiching a sheet or a film therebetween, the contact is close to a line contact, and thus sufficient transfer cannot be obtained. On the other hand, in the case of FIG. 6, due to the elastic deformation of the rubber roll 81, the contact portion 84 becomes surface contact, and sufficient transfer can be obtained.

Further, as shown in FIG. 7, a metal roll 90
A metal endless belt 92 may be interposed between the rubber roll 91 and the rubber roll 91 for processing. In FIG. 7, a metal endless belt 92 is wound between the rubber roll 91 and the cooling roll 93, and the surface of the endless belt 92 is a mirror surface or an embossed surface. A sheet or film 94 is sandwiched between a rubber roll 91 around which the endless belt 92 is wound and a metal roll 90 whose surface is a mirror surface or an embossed surface. As a result, the endless belt 92 and the metal roll 90 wound around the rubber roll 91 are pressed against the sheet or film 94, and the gloss or embossed pattern on the surface of the endless belt 92 or the metal roll 90 is transferred to the sheet or film 94. It is like this. At this time, the rubber roll 91 is
The contact portion 95 between the metal roll 90 and the endless belt 92 (rubber roll 91) in a state of being elastically deformed and sandwiching the sheet or film 94 therebetween is in surface contact.
Therefore, even in the case of FIG. 6, there is an advantage that sufficient transfer can be obtained.

[0006]

However, when a rubber roll is used to obtain elasticity, heat transfer at the surface contact portion is not performed efficiently, and particularly when transfer is performed at high speed, the roll surface is remarkably reduced. The temperature rise is inevitable.

An object of the present invention is to provide a metal surface elastic roll capable of suppressing temperature rise.

[0008]

SUMMARY OF THE INVENTION The present invention is intended to achieve the above object by cooling a roll with a fluid. Specifically, the metal surface elastic roll of the present invention is a shaft roll whose outer shape is substantially cylindrical and is rotatably provided, and an object to be contacted which is arranged so as to cover the outer peripheral surface of the shaft roll. A metal surface member in contact with the shaft roll and the metal surface member, and a fluid is caused to flow into at least one of the inside of the shaft roll and the fluid pressure of the fluid and the outer peripheral side of the metal surface member. It is characterized in that at least the metal surface member is deformed in accordance with the pressing force from. In the present invention as described above, for example, a predetermined gap is provided between the shaft roll and the metal surface member, and the metal surface member is cooled by the fluid by inflowing the fluid using this gap. Become. Therefore, even if the metal surface member rotates at a high speed and comes into contact with the contacted object, the temperature of the metal surface elastic roll does not rise significantly. At this time, at least the metal surface member is deformed according to the pressure of the fluid and the pressing force from the outside, so that a pressing force larger than the pressure of the fluid acts on the metal surface member via the contacted object, The surface member is deformed, and the metal surface elastic roll and the contact object come into surface contact with each other. In addition, when the metal surface elastic roll is used for processing or film formation of a thermoplastic resin sheet or film, for example, the contacted object here means the sheet or film.

Further, in the metal surface elastic roll of the present invention, it is desirable to provide a temperature adjusting means for adjusting the temperature of the fluid. By doing so, the temperature of the fluid can be kept constant and the surface elasticity of the metal can be maintained. It enables continuous high-speed operation of the roll for a long time.

Further, in the metal surface elastic roll of the present invention, the fluid is caused to flow into the fluid inflow member provided between the shaft roll and the metal surface member, and the fluid inflow member is used for the fluid pressure of the fluid and the metal surface member. It may be deformed according to the pressing force from the outside. In such a case, since the fluid does not directly flow between the shaft roll and the metal surface member, troublesome sealing between the shaft roll and the metal surface member becomes unnecessary. In addition, the structure of the shaft roll becomes simpler as compared with the case where the fluid flows into the shaft roll itself. Since the fluid inflow member is also deformed, the surface contact between the metal surface member and the contacted member is maintained.

At this time, the fluid inflow member may be a tube wound around an axial roll. In such a case, the cooling effect can be obtained by simply winding the tube around the axial roll, so that the entire structure of the roll is obtained. It becomes simple and the metal surface elastic roll can be manufactured at low cost.

Further, in the metal surface elastic roll of the present invention,
The fluid inflow member may have elasticity, and the fluid inflow member may be expanded by the fluid pressure of the fluid and brought into contact with the metal surface member. In such a case, it is possible to bring the metal surface member and the fluid inflow member into contact with or out of contact with each other simply by causing the fluid to flow into or out of the fluid inflow member. For,
The metal surface member can be easily attached to and detached from the shaft roll.

Further, the metal surface elastic roll of the present invention is preferably provided with a connecting member for preventing the metal surface member from being displaced in the radial direction with respect to the shaft roll. In such a case, even if a pressing force is applied to the metal surface member from the outer peripheral side, the metal surface member is not displaced, so that the pressing force can be sufficiently applied to the metal surface member. Become. Therefore, the metal surface member is more reliably deformed, and a larger contact area can be obtained when the metal surface member and the contacted object are brought into surface contact with each other.

In the above metal surface elastic roll, water or oil may be used as the fluid.

[0015]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing an overall schematic configuration of a metal surface elastic roll 10 according to the present embodiment, FIG. 2 is a partially cutaway front view showing a main part of the metal surface elastic roll 10, and FIG. It is an exploded view of the said principal part. FIG.
In FIG. 3, the metal surface elastic roll 10 is composed of a roll body 11 for sandwiching a sheet or film 72 which is a contacted object with the metal roll 70, an appropriate cooling device, a pump, a water temperature sensor, a microcomputer and the like. The cooling water, which is a fluid, is automatically controlled so as to reach a preset optimum water temperature. The cooling water is supplied to the temperature control means 1 as indicated by a dashed arrow in FIG.
After being adjusted to the optimum water temperature in 2, the water flows into the roll main body 11 through the pipe 12A, receives heat in the roll main body 11, and returns to the temperature adjusting means 12 again.

Of these, the roll main body 11 includes an axial roll 20 having an outer shape of a substantially cylindrical shape, and the axial roll 2
A tube 2 as a fluid inflow member wound around the outer peripheral surface of 0.
1, a substantially cylindrical metal surface member 22 arranged so as to cover the outer peripheral surface of the shaft roll 20, and a connecting member 23 that connects the shaft roll 20 and the metal surface member 22.

In the roll body 11 as described above, the shaft roll 20 is rotatably provided with shaft portions 20A at both ends, and is entirely hollow. Further, a screw-shaped continuous groove 20B is formed on the outer peripheral surface of the shaft roll 20 in accordance with the outer shape of the tube 21, and the tube 21 is wound along the groove 20B.

The tube 21 is made of an elastic synthetic resin such as silicone rubber or fluororubber, and the end portion of the tube 21 passes through the round hole 23A of the connecting member 23 and is provided on the shaft portion 20A. It extends from the round hole 20C to the inside thereof and is connected to the pipe 12A via a swivel such as a rotary joint (not shown). The thickness of such a tube 21 is not particularly limited, but is preferably 0.1 to 5 mm on one side, more preferably 0.5 to 3 mm.
mm is good. If it is less than 0.1 mm, the strength is insufficient and it is 5 mm.
This is because the heat transfer is poor in the above. Also, the tube 21
The inner diameter of is preferably 2 mm or more. If it is too small, the flow rate of the cooling water cannot be increased and the cooling effect is small.

The metal surface member 22 comes into contact with the sheet or film 72. For example, when the metal surface elastic roll 10 is used for glossing (gloss) processing, it is made of stainless steel (SUS) and has no seam. (Without welding)
A seamless surface and a mirror surface having a surface roughness of 5S or less may be used. When the metal surface elastic roll 10 is used for embossing (texturing), two opposite sides of a nickel electroformed surface embossed flat plate are used. It may be formed by welding to form a cylindrical shape. The thickness of the metal surface member 22 is preferably 1 mm or less, more preferably 0.8 mm or less.
If the thickness exceeds 1 mm, it is difficult to deform. By the way, when cooling water is made to flow into the tube 21,
The tube 21 having elasticity expands due to its water pressure,
The diameter size becomes large. As a result, the tube 21 comes into contact with the inner peripheral surface of the metal surface member 22, and the frictional force between the tube 21 and the metal surface member 22 suppresses the axial displacement of the metal surface member 22. There is.

The connecting member 23 is formed in the shape of a basin, and after the opening 23B provided at the center is inserted into the shaft portion 20A, the shaft roll 20 is fixed by an appropriate fixing means such as a screw. Fixed to. Further, the end edge of the metal surface member 22 is fitted inside the flange portion 23C formed at the peripheral edge of the connecting member 23, whereby the shaft roll 20 and the metal surface member 22 are connected via the connecting member 23. The metal surface member 22 is prevented from being displaced (eccentric) in the radial direction with respect to the shaft roll 20. Further, the metal surface member 22 is locked to the connecting member 23 so that the shaft roll 2
A locking portion (not shown) for preventing the idle rotation of 0 is provided, and the shaft roll 20 and the metal surface member 22 rotate together. Note that the connecting member is not limited to the one formed in the shape of a deep dish, and the shape and the like may be appropriately determined in the implementation thereof.

On the other hand, the metal roll 70 is shown in FIGS.
Since it is the same as the conventional metal rolls 80 and 90 shown in, the detailed description of the metal roll 70 will be omitted here.

In the present embodiment as described above, the water pressure of the cooling water in the tube 21 is adjusted to be smaller than the desired pressing force (that is, the nip pressure) of the metal roll 70 in advance. In this state, the metal roll 70 is pressed against the metal surface elastic roll 10 via the sheet or film 72, and a nip pressure is applied to the metal surface elastic roll 10. By doing so, as shown in FIG. 4, the metal surface member 22 and the tube 21 are deformed, and the water pressure of the cooling water is increased so as to balance with the nip pressure. At this time, due to the deformation of the metal surface member 22, a pressing section L is formed at a contact portion between the metal surface member 22 and the sheet or film 72, so that the metal surface member 22 and the sheet or film 72 come into surface contact with each other. become. When the deformed portion is displaced by the rotation of the metal surface elastic roll 10, the nip pressure does not act on the deformed portion, and only the outward force such as the water pressure of the cooling water or the elastic force of the tube 21 itself acts. become. As a result, the deformed portion is returned to its original shape.

According to this embodiment as described above, the following effects can be obtained. That is, since the metal surface member 22 is cooled by the cooling water flowing between the shaft roll 20 and the metal surface member 22, the metal surface elastic roll 1
Even if 0 is rotated at high speed, the heat generated in the pressing section L can be absorbed, and the temperature rise of the metal surface elastic roll 10 can be suppressed. At this time, the tube 21 and the metal surface member 22 are surely deformed by being pressed by a nip pressure larger than the pressure of the cooling water, so that the metal surface member 22 and the sheet or film 72 are brought into surface contact in the pressing section L. The surface gloss and emboss of the metal surface member 22 can be sufficiently transferred to the sheet or film 72.

Further, by avoiding the temperature rise,
The sheet or film 72 can be processed at higher speed and with stable quality, and the cost of the product can be reduced.

Since the metal surface elastic roll 10 is provided with the temperature adjusting means 12 for adjusting the temperature of the cooling water, the cooling water is adjusted to a constant temperature and the roll body 11 is adjusted.
Can be supplied to the metal surface elastic roll 10
Even if it is operated for a long time, the temperature of the metal surface elastic roll 10 does not rise.

Further, in the roll main body 11, since the cooling water flows in the tube 21, the cooling water can be caused to flow directly between the shaft roll 20 and the metal surface member 22, or the shaft roll 20. As compared with the case where the thick portion is processed to allow the cooling water to flow in, troublesome sealing and processing of the shaft roll 20 are unnecessary, and the watertightness of the cooling water can be easily secured. Thereby, the structure of the metal surface elastic roll 10 is simplified, and the metal surface elastic roll 10 can be manufactured at low cost. Further, by using the tube 21, a sufficient cooling effect can be obtained only by winding the tube 21 on the axial roll 20, so that the structure of the metal surface elastic roll 10 can be further simplified, and also from this point, the metal surface elastic roll 10 can be obtained. Can reduce the production cost.

Further, since the tube 21 has elasticity by itself, and comes into contact with the metal surface member 22 by inflowing and expanding cooling water, when the metal surface member 22 is replaced. After removing the connecting member 23, the cooling water is drained from the tube 21,
The tube 21 and the metal surface member 22 may be brought into a non-contact state, and the replacement work of the metal surface member 22 can be performed without trouble. Since the tube 21 has elasticity, the deformed portion of the tube 21 or the metal surface member 22 in the pressing section L is not only due to the hydraulic pressure of the cooling water but also to the original shape due to the elastic force thereof. It will be returned instantly.

Further, since the eccentricity of the metal surface member 22 with respect to the shaft roll 20 is suppressed by providing the connecting member 23, the tube 21 is provided on the side opposite to the side on which the nip pressure acts. Does not swell. Therefore, the water pressure of the cooling water in the tube 21 is further increased,
The nip pressure can be more reliably applied to the metal surface member 22. Therefore, the metal surface member 22 can be deformed to a greater extent and brought into surface contact with the sheet or film 72. The metal surface member 22 is reliably held by using the connecting member 23.
The axial displacement of 2 can be prevented not only by the frictional force with the tube 21, but also by this connecting member 23.

Further, since water is used as the cooling fluid, it is easy to handle and inexpensive.

FIG. 5 shows a metal surface elastic roll 50 according to a second embodiment of the present invention. In the metal surface elastic roll 50, the cylindrical metal surface member 22 in the first embodiment described above is used as an endless belt-shaped metal surface member 62. Therefore, the same components as those in the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted. In FIG. 5, the metal surface member 62 constituting the roll main body 51 is wound around the shaft roll 20 and a cooling roll (not shown), and covers a substantially half area of the outer peripheral surface of the shaft roll 20 wound by the tube 21. ing. The surface of the metal surface member 62 is also a mirror surface or an embossed surface like the metal surface member 22 described above. However, the roll main body 51 is not provided with a member corresponding to the above-mentioned connecting member 23.

In the present embodiment as described above, substantially the same effects as the effects of the first embodiment can be obtained except for the effect of the connecting member 23, and the metal surface member 62 is cooled by the cooling roll. Therefore, the temperature rise of the metal surface elastic roll 50 can be suppressed more reliably.

It should be noted that the present invention is not limited to the above-described embodiment, but includes other configurations that can achieve the object of the present invention, and also includes the following modifications and the like.
For example, in the second embodiment, the endless belt-shaped metal surface member 62 is provided directly on the outer side of the tube 21, but the heat transfer between the tube 21 and the metal surface member 62 is good. In addition, a cylindrical member that deforms according to the pressure and the pressing force of the cooling water is arranged, and the cylindrical member and the shaft roll 2 are arranged.
0 may be connected by a connecting member. That is, the first
The structure may be such that the endless belt-shaped metal surface member 62 is further wound around the roll body 11 in the embodiment. In such a case, since the cylindrical member corresponding to the surface metal member 22 does not contact the contacted object, the surface does not need to be a mirror surface or an embossed surface. By doing this,
The tube 21 does not expand to the side opposite to the pressing side of the metal roll, the pressure of the cooling water is further increased, and the metal surface member 62 and the sheet or film 72 can be brought into surface contact with a larger area. Even if the metal surface member 62 in the shape of an endless belt is used, the effects of the connecting member 23 in the first embodiment can be obtained.

Although water is used as the fluid in each of the above embodiments, the fluid is not limited to water, and may be oil, for example, or water or oil. Alternatively, a gas such as air may be cooled and used.

Further, in each of the above embodiments, the temperature adjusting means 12 is provided outside the roll main bodies 11 and 51, but such temperature adjusting means is incorporated inside the roll main body, for example. Well, in this case,
The fluid will circulate within the roll body. Of course, the present invention also includes the case where the fluid is not circulated and the fluid is simply enclosed in the roll body. However, in the present invention, the temperature adjusting means is not essential and is included in the present invention even when it is not provided. However, the above-mentioned effect may be obtained by providing the temperature adjusting means.

In each of the above embodiments, the groove 20B is used.
Was formed into a screw shape, but in addition to forming into a normal screw shape, for example, the groove may be formed into a two-threaded screw shape, and the fluid may flow so as to reciprocate in the axial direction of the shaft roll, By doing so, the temperature distribution in the axial direction of the metal surface elastic roll can be made uniform. Also, the temperature distribution may be made uniform by winding the tube not in a single layer but in a double layer.

Further, in each of the above embodiments, the tube 21 has elasticity, but a tube having no elasticity may be used. In short, the fluid inflow member may be deformed according to the fluid pressure of the fluid or the pressing force applied to the metal surface member.

In each of the embodiments, the tube 21 is used as the fluid inflow member, but as the other fluid inflow member, for example, a cylinder made of rubber or the like having a predetermined wall thickness (single wall) dimension. The member may be a member in which a hole for fluid inflow is provided in the thick portion thereof so as to communicate in the axial direction.
However, in the present invention, the fluid inflow member is not essential. For example, when the metal surface member is formed in a cylindrical shape as in the first embodiment, the axial roll and the metal surface member are A gap may be provided between the two and the fluid may directly flow into this gap. However, by using a fluid inflow member such as a tube, the above-described effect that the structure of the entire metal surface elastic roll can be simplified can be obtained.

Further, regardless of whether or not the fluid inflow member is used, the fluid is allowed to flow in between the shaft roll and the metal surface member, and the shaft roll itself is provided with a hole for fluid inflow to allow the fluid to flow in. Therefore, the cooling efficiency of the metal surface elastic roll may be further enhanced. That is, the present invention includes the case where the fluid is flown into both between the shaft roll and the metal surface member and inside the shaft roll.

Further, in each of the above-mentioned embodiments, the metal surface elastic roll 10 is a roll used for performing a glossing (gloss) processing or an embossing (texturing) processing on the surface of the thermoplastic resin sheet or film 1. However, the metal surface elastic roll of the present invention can be widely applied to metal surface elastic rolls for other applications having a similar structure. For example, it may be a roll for forming a thin film, or is not limited to a roll for processing or forming a film of a thermoplastic resin sheet or film, but may be a roller for a printing machine or a feed roller or a pressure roller for various other devices. Applicable to

[0040]

【Example】

(First Example) Based on the first embodiment, a metal surface elastic roll 10 was manufactured with the following specifications, and a sheet 72 was actually processed and manufactured. [Roll specifications] Inner diameter of tube 21: 20 mm Thickness of tube 21: 2 mm (single wall) Outer diameter of metal surface member 22: 260 mm Thickness of metal surface member 22: 0.3 mm (single wall) Metal surface member 22 Specularity: 0.1 s Fluid: Water [Processing conditions] Thickness of sheet 72: 0.5 mm Width of sheet 72: 1000 mm Material of sheet 72: Idemitsu Polypro E200G (manufactured by Idemitsu Petrochemical Co., Ltd.) Processing speed: 30 m / min Setting temperature of the temperature adjusting means 12: 80 ° C. However, the setting temperature here is the metal surface elastic roll 10
Is set as the surface temperature of. That is, the temperature adjusting means 12 corrects the set temperature to calculate and determine the optimum cooling water temperature, and automatically controls the cooling water to reach the determined optimum cooling water temperature.

According to this embodiment, the surface temperature of the metal surface elastic roll 10 can be maintained at 80 ° C. during the stable production of the sheet 72, and the temperature rise of the metal surface elastic roll 10 can be prevented. I was able to hold back. Further, since the sufficient pressing section L is formed, the metal surface member 22 and the sheet 72 can be brought into surface contact with each other, and the gloss of the surface of the metal surface member 22 can be sufficiently transferred to the sheet 72. . As a result, the effect of the present invention was remarkably exhibited.

(Second Embodiment) As a second embodiment, of the processing conditions of the first embodiment, the temperature of the temperature adjusting means 12 is set to 60 ° C. and the sheet 72 is processed. As a result,
The surface temperature of the metal surface elastic roll 10 could be suppressed to 60 ° C., and a high quality sheet 72 could be obtained as in the first embodiment.

(Third Embodiment) As a third embodiment, the sheet 72 is processed in the same manner while setting the temperature of the temperature adjusting means 12 to 40 ° C. under the processing conditions. Also in this result, the surface temperature of the metal surface elastic roll 10 could be suppressed to 40 ° C., and the high quality sheet 72 could be obtained as in the first and second embodiments.

[0044]

As described above, according to the present invention, since the metal surface member is cooled by the fluid, even if the metal surface member rotates at a high speed and comes into contact with the contacted object, the metal surface elastic roll The temperature rise can be suppressed. In addition, since the metal surface member is deformed according to the pressure of the fluid and the pressing force from the outer peripheral side, the metal surface member is deformed by applying a pressing force larger than the pressure of the fluid from the outside of the metal surface member. Thus, the metal surface elastic roll and the contacted object can be brought into surface contact with each other.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a schematic configuration of an entire metal surface elastic roll according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a main part of the metal surface elastic roll.

FIG. 3 is an exploded view of the main part.

FIG. 4 is a sectional view of the metal surface elastic roll.

FIG. 5 is a cross-sectional view of a metal surface elastic roll according to a second embodiment of the present invention.

FIG. 6 is a configuration diagram showing a conventional form.

FIG. 7 is a configuration diagram showing another conventional configuration.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Metal surface elastic roll 12 Temperature control means 20 Axial roll 21 Tube which is a fluid inflow member 22,62 Metal surface member 23 Connecting member 72 Sheet or film which is a contacted object

Claims (7)

[Claims] 1. A shaft roll, which has a substantially cylindrical outer shape and is rotatably provided, and a metal surface member, which is arranged so as to cover the outer peripheral surface of the shaft roll and contacts an object to be contacted, A fluid is flowing between the shaft roll and the metal surface member, and at least the metal surface member is deformed depending on the fluid pressure of the fluid and the pressing force from the outside of the metal surface member. Characteristic metal surface elastic roll. 2. The metal surface elastic roll according to claim 1, further comprising temperature adjusting means for adjusting the temperature of the fluid. 3. The metal surface elastic roll according to claim 1 or 2, wherein the fluid flows into a fluid inflow member provided between the shaft roll and the metal surface member. The metal surface elastic roll is characterized in that the fluid inflow member is deformed according to the fluid pressure of the fluid and the pressing force from the outside of the metal surface member. 4. The metal surface elastic roll according to claim 3, wherein the fluid inflow member is a tube wound around the shaft roll. 5. The metal surface elastic roll according to claim 3 or 4, wherein the fluid inflow member has elasticity and swells by the fluid pressure of the fluid to come into contact with the metal surface member. Characteristic metal surface elastic roll. 6. The metal surface elastic roll according to claim 1, further comprising a connecting member for preventing the metal surface member from being displaced in the radial direction with respect to the shaft roll. A metal surface elastic roll characterized by. 7. The metal surface elastic roll according to claim 1, wherein the fluid is water or oil.