JP7803516B2 - roll - Google Patents

Description

The present invention relates to a roll for removing, squeezing, washing, and sucking up water, oil, or liquid chemical components adhering to the surface to be washed of steel plates, non-ferrous metal plates, resin plates, glass, paper, or film-like sheets.

Rolls for removing, squeezing, cleaning, and sucking moisture and other substances adhering to the surface to be cleaned have been known for some time (Patent Documents 1 and 2).

The roll described in Patent Document 1 is a dewatering device in which a water-treated part is passed between a pair of absorbent sponge rollers to remove water droplets adhering to the surface of the part. The absorbent sponge of the absorbent sponge roller has multiple slits in the roller rotation direction and thrust direction.

Furthermore, Figures 4 and 5 of Patent Document 2 show a grooved nonwoven fabric roll in which grooves are formed using a large nonwoven fabric and a small roll body component. By placing the roll opposite a flat-surfaced rubber roll, squeezed water and other substances flow through the grooves and are discharged to the outside, reducing the amount of water and other substances impregnated into the nonwoven fabric.

Japanese Unexamined Patent Publication No. 4-129218 Japanese Utility Model Publication No. 61-392

However, the roll described in Patent Document 1 above is too soft, which means that gaps are easily formed where the roll does not come into contact with the surface to be cleaned, and this results in an insufficient effect in absorbing moisture and other liquids. Furthermore, the roll described in Patent Document 2 above has grooves formed for the purpose of draining moisture and other liquids, and is not intended to increase the contact area with the surface to be cleaned, so it has the problem of being insufficient in absorbing moisture and other liquids that adhere to the side surfaces of holes and other holes formed in the surface to be cleaned.

The present invention aims to solve the above-mentioned problems of the conventional roll, and to provide a roll that can increase the contact area with the surface to be cleaned and improve the effectiveness of absorbing liquids such as water.

In order to solve the above-mentioned conventional problems, the invention of claim 1 is a roll for removing, squeezing, washing, and sucking water, oil, or liquid chemical components adhering to the surface to be washed of a steel plate, a non-ferrous metal plate, a resin plate, glass, paper, or a film-like sheet, the roll having a roll portion and a base, the roll portion being approximately annular in shape and formed by stacking two types of roll pieces with different outer diameters on the outer periphery of the base, the base being approximately disk-shaped or approximately annular in shape and having two flanges that abut against the roll pieces at both ends and a rotating shaft to which each of the two flanges is engaged or fixed, at least one side of the rotating shaft having a discharge hole, and when in use while connected to a suction device, liquid in the roll portion is discharged to the outside from the discharge hole, the outer surface of the roll portion having a plurality of steps formed along the longitudinal direction, and the outer diameter of the flanges being smaller than the outer diameter of the roll piece with the smaller outer diameter.

The invention of claim 1 uses two types of roll pieces with different outer diameters, which creates uneven steps on the outer surface of the roll portion. Furthermore, the outer diameter of the flange is smaller than the outer diameter of the roll piece with the smaller outer diameter. This allows the two types of roll pieces with different outer diameters to be deformed, thereby increasing the contact area with the surface to be cleaned and improving the liquid absorption effect.

The invention of claim 2 is characterized in that, in the invention of claim 1, the roll pieces are nonwoven fabric and/or porous synthetic resin. As a result, when all of the roll pieces are made of only nonwoven fabric or only porous synthetic resin, regardless of the outer diameter, a roll with highly uniform suction performance can be formed. Furthermore, when one of the roll pieces with different outer diameters is made of nonwoven fabric and the other is made of porous synthetic resin, the rigidity of the nonwoven fabric stabilizes the overall shape of the roll, and the porous synthetic resin allows for efficient suction in accordance with the characteristics of the liquid adhering to the surface to be cleaned.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the roll piece with a larger outer diameter has a larger internal porosity than the roll piece with a smaller outer diameter. As a result, the roll piece with a larger outer diameter that comes into contact with the surface to be cleaned first has a larger internal porosity, so when liquid is sucked in, water channels are preferentially formed inside the roll piece with a larger outer diameter, allowing the liquid to be sucked in efficiently.

The invention of claim 4 is characterized in that, in any of the inventions of claims 1 to 3, a coating layer with lower liquid permeability than the porous synthetic resin body is formed on the side of the roll piece with a larger outer diameter and/or the roll piece with a smaller outer diameter. As a result, when liquid is sucked, water channels are preferentially formed inside the roll piece with a larger outer diameter, allowing for efficient liquid suction. Furthermore, improved rigidity of the roll piece prevents excessive tilting or tipping when it comes into contact with the surface to be cleaned, making it less likely for gaps to form and allowing for efficient liquid suction.

The invention of claim 5 is characterized in that, in any one of the inventions of claims 1 to 4, the roll piece with a larger outer diameter has a shorter length in the thickness direction than the roll piece with a smaller outer diameter. As a result, the roll piece with a larger outer diameter that comes into contact with the surface to be cleaned first has a smaller thickness, making it easier to bend and flexibly deform when it comes into contact with the surface to be cleaned, thereby preventing damage to the surface to be cleaned.

The invention of claim 6 is characterized in that, in any of the inventions of claims 1 to 5, the outer peripheral end of the roll piece with the larger outer diameter has a slit formed in it. This allows it to flexibly deform while following the shape of the surface to be cleaned, further preventing damage to the surface to be cleaned.

The invention of claim 7 is characterized in that, in any of the inventions of claims 1 to 6, when the roll portion is in use and comes into contact with the surface to be cleaned, the outer peripheral end of the roll piece with the larger outer diameter tilts, and the side of the roll piece with the larger outer diameter comes into contact with the end face of the roll piece with the smaller outer diameter. This makes it less likely that a gap will form between the surface to be cleaned and the outer surface of the roll portion during use, allowing the roll portion as a whole to efficiently suck up liquid.

The invention of claim 8 is characterized in that, in the invention of claim 7, the length in the thickness direction of the small diameter portion, which is formed by stacking one or more roll pieces with a small outer diameter in succession, is less than half the difference in outer diameter from the roll piece with a large outer diameter. As a result, when the roll piece with a large outer diameter tilts, it covers more than half the thickness of the roll piece with a small outer diameter (the total thickness of the roll pieces in the case of multiple roll pieces), allowing for efficient suction by the roll piece with a large outer diameter. The roll piece with a large outer diameter may also cover the entire roll piece with a small outer diameter (small diameter portion). Furthermore, when the roll piece with a large outer diameter tilts, liquid is also transferred to the roll piece with a small outer diameter, allowing for efficient suction of liquid throughout the entire roll section.

The invention of claim 9 is characterized in that, in any of the inventions of claims 1 to 8, the roll pieces have suction grooves formed radially from the inner peripheral surface to the outer peripheral surface. This allows the suction force from the suction device to be applied directly to the surface to be cleaned, allowing the liquid to be sucked in efficiently.

The invention of claim 10 is characterized in that, in any of the inventions of claims 1 to 9, the roll piece with a large outer diameter has grooves formed in the circumferential direction on its outer surface. This allows the roll piece with a large outer diameter to abut against the uneven areas even if the surface to be cleaned is uneven, thereby increasing the contact area with the surface to be cleaned and improving the liquid absorption effect.

The invention of claim 11 is characterized in that, in any of the inventions of claims 1 to 10, a circular groove is formed on one side of the roll piece with a larger outer diameter. This makes it easier for the roll piece with a larger outer diameter to tilt toward the side on which the circular groove is formed, thereby achieving uniform suction performance.

The roll invention of claim 1 can increase the contact area with the surface to be cleaned and improve the effectiveness of absorbing liquids such as water. The invention of claim 2 improves both elasticity and suction power. It also stabilizes the overall shape and can efficiently suck up liquids adhering to the surface to be cleaned.

In the inventions of claims 3 and 4, when liquid is sucked, water channels are preferentially formed inside the roll pieces with larger outer diameters, allowing for efficient liquid suction. Furthermore, the inventions of claims 5 and 6 can prevent damage to the surface being cleaned. Furthermore, the inventions of claims 7 and 8 allow for efficient liquid suction throughout the entire roll.

The invention of claim 9 allows the suction force from the suction device to be applied directly to the surface to be cleaned, thereby efficiently sucking up liquid. The invention of claim 10 can increase the contact area with the surface to be cleaned and improve the liquid absorption effect. The invention of claim 11 can achieve uniform suction performance.

(a) Front view of a roll according to the present invention. (b) Cross-sectional view of a roll according to the present invention. (c) Cross-sectional view showing another embodiment of a roll according to the present invention. (a) A perspective view showing a first embodiment of a roll piece and a reference diagram showing an enlarged view of the inside thereof. (b) A perspective view showing a second embodiment of a roll piece and a reference diagram showing an enlarged view of the inside thereof. FIG. 1 is a perspective view showing a state in which a roll according to the present invention is connected to a suction device. (a) A cross-sectional view showing the roll according to the present invention during workpiece cleaning. (b) A cross-sectional view showing the tilting of roll pieces of the roll portion. (c) A cross-sectional view showing another example of the tilting of roll pieces of the roll portion. (a) A perspective view showing a third embodiment of the roll piece; (b) A perspective view showing a fourth embodiment of the roll piece; (c) A perspective view showing a fifth embodiment of the roll piece; (d) A perspective view and an A-A cross-sectional view showing a sixth embodiment of the roll piece; (e) A perspective view and an B-B cross-sectional view showing a seventh embodiment of the roll piece; (f) A perspective view and an Eighth embodiment of the roll piece. 1A to 1H are cross-sectional views showing first to eighth embodiments of a roll unit using roll pieces on which a coating layer is formed.

Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to these embodiments. Figure 1(a) is a front view of a roll according to the present invention, and Figure 1(b) is a cross-sectional view of a roll according to the present invention. Figure 1(c) is a cross-sectional view showing another embodiment of a roll according to the present invention. An overview of the roll according to the present invention will be described below using these figures.

The roll 10 according to the present invention is a roll for removing, squeezing, cleaning, and sucking up water, oil, or liquid chemical components adhering to the surface to be cleaned of a steel plate, a non-ferrous metal plate, a resin plate, glass, paper, or a film-like sheet, and has a roll portion 1 and a base 2.

The roll portion 1 is made of nonwoven fabric and/or porous synthetic resin, has a roughly circular shape, and is formed by stacking two types of roll pieces 3a and 3b with different outer diameters on the outer periphery of the base 2.

The base 2 is roughly disk-shaped or annular, and has two flanges 4a, 4b that abut against the roll pieces at both ends, and a rotating shaft 5 to which the two flanges 4a, 4b are fastened or fixed via fasteners 9a, 9b. A drain hole 6 is formed on at least one side of the rotating shaft 5, which discharges liquid sucked from the roll portion 1 to the outside. Additionally, a number of holes 7 are formed on the outer periphery of the rotating shaft 5, and these holes 7 are connected to the drain hole 6.

When the device is connected to a suction device and in use, the liquid inside the roll portion 1 is discharged to the outside through the discharge holes 6. The outer surface of the roll portion 1 has multiple steps 8 formed along the longitudinal direction, and the outer diameter of the flanges 4a, 4b is smaller than the outer diameter of the roll piece 3a, which has the smaller outer diameter.

The roll 10 configured as described above has uneven steps 8 formed on the outer surface of the roll portion 1, and the outer diameter of the flanges 4a, 4b is smaller than the outer diameter of the roll piece 3a, which has a smaller outer diameter. This makes it possible to deform the two types of roll pieces 3a, 3b, which have different outer diameters, thereby increasing the contact area with the surface to be cleaned and improving the liquid absorption effect.

Incidentally, as shown in Figure 1(c), the present invention also includes a configuration in which the rotation axes 15a, 15b of the base 12 are separated into left and right, and multiple shafts 13a, 13b penetrating the roll portion 11 are fixed to the flanges 14a, 14b. In this case, the cavity 16b formed by the inner rings of the roll pieces 3h, 3i communicates with the discharge hole 16a formed in one of the rotation axes 15b.

Figure 2(a) shows a perspective view and a reference diagram enlarging the interior of a first embodiment of a roll piece. The roll piece 3a shown in this figure has a smaller outer diameter than the roll piece 3b shown in Figure 2(b). It uses a nonwoven fabric composed of fibers 25, a binder 26 that bonds the fibers together, and voids that occupy the area other than the fibers 25 and binder 26. In the roll portion constituting the present invention, the roll piece with a smaller outer diameter can be made of nonwoven fabric or a porous synthetic resin, while the roll piece with a larger outer diameter can be made of a porous synthetic resin. This improves elasticity and suction power when all roll pieces are made of a porous synthetic resin, regardless of the outer diameter. On the other hand, when the roll piece with a smaller outer diameter is made of a nonwoven fabric, the rigidity of the nonwoven fabric stabilizes the overall shape, and the roll piece with a larger outer diameter is made of a porous synthetic resin, allowing for efficient suction of liquid adhering to the surface to be cleaned.

Nonwoven fabrics can be manufactured using a chemical bonding method, in which a polymeric elastomer containing a crosslinking agent is applied to a structure in which multiple fibers are accumulated in a flat plate and entangled three-dimensionally using methods such as spraying, dipping, or impregnation, and then heated to bond the fibers. Other methods that can be used as appropriate include hydroentanglement, spunbonding, meltblowing, fiberbonding, and thermal bonding. Nonwoven fabrics can be made of natural fibers such as cotton, rayon, and cellulose, or synthetic resin fibers such as polyester, nylon, and acrylic, used alone or in combination. Polymeric elastomers can include nitrile rubber, acrylic rubber, styrene rubber, urethane rubber, acrylic resin, and urethane resin, used alone or in combination.

Figure 2(b) shows a perspective view and a reference diagram enlarging the interior of a second embodiment of the roll piece. The roll piece 3b shown in this figure has a larger outer diameter than the roll piece 3a shown in Figure 2(a). It uses a sponge composed of open cells 27a, closed cells 27b, and synthetic fibers occupying the areas other than the open cells 27a and closed cells 27b. The inner diameter of the circular hole 23 of the roll piece 3a and the inner diameter of the circular hole 24 of the roll piece 3b are approximately the same. It is preferable that the roll piece with a larger outer diameter of the roll portion constituting the present invention has a larger internal porosity than the roll piece with a smaller outer diameter. This allows the larger outer diameter roll piece, which contacts the surface to be cleaned first, to have a larger internal porosity. Therefore, when liquid is suctioned, water channels are preferentially formed inside the larger outer diameter roll piece, allowing for more efficient liquid suction. It is also preferable that the roll piece with a larger outer diameter has a shorter thickness than the roll piece with a smaller outer diameter. As a result, the roll piece with the larger outer diameter that first comes into contact with the surface to be cleaned has a small thickness, making it easy to bend and flexibly deform when it comes into contact with the surface to be cleaned, preventing damage to the surface to be cleaned.

Furthermore, the internal porosity (air void ratio) of the synthetic resin porous body is preferably approximately 60 to 90%, and optimally approximately 80 to 85%. By appropriately selecting the internal porosity depending on the viscosity of the liquid, etc., it is possible to improve both the liquid suction efficiency and durability.

In addition, a method for manufacturing a synthetic resin porous body can involve, for example, immersing polyurethane in water and injecting carbon dioxide into the water to cause carbon dioxide foaming, resulting in a porous polyurethane with extremely fine bubbles. In addition to polyurethane, other polymeric elastomers that can be used alone or in combination include nitrile rubber, acrylic rubber, styrene rubber, urethane rubber, acrylic resin, and urethane resin.

Figure 3 is a perspective view showing the rolls of the present invention connected to a suction device. The rolls 10, 10 are installed in a pair, one above the other, in the cleaning device 40. A constant pressure is applied to the rotation shaft 5 of the upper roll 10. The rotation shafts 5, 5 of the upper and lower rolls 10, 10 are connected to drive means 17a, 17b via joints 18a, 18b. These drive means 17a, 17b rotate the rolls in the direction of the arrows, and a glass sheet 30 with water or other liquid adhering to its front, back, and side surfaces is sent between the upper and lower rolls 10 in the direction of the white arrow. The interiors of the rotation shafts 5, 5 are connected to a vacuum pump 22 via pipes 19a, 19b. The upper and lower rolls 10, 10 remove water or other liquid from the front, back, and side surfaces of the glass sheet 30 and from the edges of the holes 30a, 30b, and 30c formed in the glass sheet 30.

When the rolls 10, 10 are in the above-described state, operating the vacuum pump 22 to apply vacuum suction force applies negative pressure to the roll section, and the liquid absorbed in the roll section passes through the discharge holes formed inside the rotating shafts 5, 5, through the pipes 19a, 19b, and is sucked out of the rolls 10, 10 and discharged.

Figure 4(a) is a cross-sectional view showing the roll of the present invention during workpiece cleaning. When the rolls 10, 10 remove liquids such as moisture from both the front and back surfaces and sides of the glass plate 30 and from the edges of the holes formed in the glass plate, the tip of the roll piece 3b with the larger outer diameter tilts and abuts against the front and back surfaces of the glass plate or the edges of the holes. The end face of the roll piece 3a with the smaller outer diameter abuts against the front and back surfaces of the glass plate. Furthermore, because the outer diameter of the flanges 4a, 4b is smaller than that of the roll piece 3a with the smaller outer diameter, the two types of roll pieces 3a, 3b with different outer diameters can be deformed, thereby increasing the contact area with the surface to be cleaned and improving the liquid absorption effect.

Figure 4(b) is a cross-sectional view showing the tilting of the roll pieces of the roll unit. The surface to be cleaned, such as a glass plate, is not shown. As shown in this figure, when the roll unit is in use and abuts against the surface to be cleaned, the outer peripheral ends of the roll pieces 3o, 3o with larger outer diameters of the roll unit 101 are tilted, and the side surfaces of the roll pieces 3o, 3o with larger outer diameters abut against the end faces of the roll pieces 3p, 3p, 3p with smaller outer diameters. This makes it less likely that gaps will form between the surface to be cleaned and the outer surface of the roll unit 101, allowing the roll unit 101 as a whole to efficiently suck up liquid.

Figure 4(c) is a cross-sectional view showing another example of tilting of the roll pieces of the roll unit. The surface to be cleaned, such as a glass plate, is not shown. The roll unit 111 shown in this figure has a thickness direction length X of the small diameter portion 36, which is formed by continuously stacking multiple roll pieces 3r with small outer diameters, when the roll unit 111 is in use and abutting the surface to be cleaned. The thickness direction length X of the small diameter portion 36 is less than half the length Y of the difference in outer diameter between the roll piece 3r and the large outer diameter roll piece 3q. This allows the large outer diameter roll piece 3q to cover more than half of the small diameter portion 36 when tilted, thereby enabling efficient suction by the large outer diameter roll piece 3q. Alternatively, as shown in Figure 4(c), the large outer diameter roll piece 3q may cover the entire small diameter portion 36. When the large outer diameter roll piece 3q tilts, liquid is also transferred to the small outer diameter roll piece 3r, allowing the entire roll unit to efficiently suction liquid. Furthermore, even if there is only one small-diameter roll piece 3r sandwiched between roll pieces 3q, 3q with large outer diameters, it is possible to establish the relationship X≦Y above by using the thickness of this roll piece as the small-diameter portion 36.

Figure 5(a) is a perspective view showing a third embodiment of a roll piece. The roll piece 3c shown in this figure has a slit 28 formed in the outer peripheral end. Note that the roll piece 3c with a slit 28 formed in the outer peripheral end can be used with both roll pieces with small and large outer diameters. However, by using it with a roll piece with a large outer diameter, it can flexibly deform to follow the shape of the surface to be cleaned, preventing damage to the surface to be cleaned.

Figure 5(b) is a perspective view showing a fourth embodiment of a roll piece. The roll piece 3d shown in this figure has a coating layer 29 formed on the entire side surface, which has lower liquid permeability than the synthetic resin porous body. As a result, when liquid is sucked, water channels are preferentially formed inside the roll piece with a larger outer diameter, allowing the liquid to be sucked efficiently. Note that, as will be described later, multiple patterns can be applied to the combination of roll pieces with a large outer diameter and/or roll pieces with a small outer diameter having a coating layer 29 formed on the side surface.

Figure 5(c) is a perspective view showing a fifth embodiment of the roll piece. The roll piece 3e shown in this figure has suction grooves 35 formed radially from the inner peripheral surface to the outer peripheral surface. This allows the suction force from the suction device to be applied directly to the surface to be cleaned, allowing liquid to be sucked in efficiently.

Figure 5(d) is a perspective view and an A-A cross-sectional view showing a sixth embodiment of the roll piece. The roll piece 3f shown in this figure has a groove 32 formed in the circumferential direction on the outer surface. If this roll piece 3f is applied to a roll piece with a large outer diameter, even if the surface to be cleaned is uneven, the roll piece with a large outer diameter can abut against the uneven areas, thereby increasing the contact area with the surface to be cleaned and improving the liquid absorption effect.

Figure 5(e) shows a perspective view and a cross-sectional view taken along the line B-B of a seventh embodiment of the roll piece. The roll piece 3g shown in this figure has an annular groove 33 formed on one side. If this roll piece 3g is used for a roll piece with a large outer diameter, the roll piece with the large outer diameter can be more easily tilted toward the side on which the annular groove 33 is formed, thereby achieving uniform suction performance.

Figure 5(f) is a perspective view showing an eighth embodiment of the roll piece. The roll piece 3h shown in this figure is a roll piece that is applied to the base 12 described in Figure 1(c), and multiple through holes 34, 34... through which the shafts 13a, 13b pass are formed on the side of the roll piece 3h.

Figure 6(a) is a cross-sectional view showing a first embodiment of a roll unit using roll pieces with a coating layer. The roll unit 21 shown in this figure is an example in which roll pieces 3a with a small outer diameter and no coating layer are alternately stacked with roll pieces 3i with a large outer diameter and a coating layer formed on the right side of the figure. With this embodiment, water channels are preferentially formed inside the roll pieces 3i with a large outer diameter, allowing for efficient suction of liquid. Furthermore, the improved rigidity of the roll pieces 3i with a large outer diameter prevents excessive tipping when they come into contact with the surface to be cleaned, reducing the likelihood of gaps and allowing for efficient suction of liquid.

Figure 6(b) is a cross-sectional view showing a second embodiment of a roll unit using roll pieces with a coating layer. The roll unit 31 shown in this figure is an example in which small-diameter roll pieces 3a without a coating layer are alternately stacked with large-diameter roll pieces 3j with a coating layer formed on the portion of the roll piece 3j that contacts the small-diameter roll piece 3a on the right side of the drawing. In this embodiment, no coating layer is formed on the tip of the large-diameter roll piece 3j, so the coating layer does not come into contact with the surface to be cleaned, allowing for efficient suction of liquid. On the other hand, because a coating layer is formed on the portion of the roll piece 3j that contacts the small-diameter roll piece 3a, water channels are preferentially formed inside the large-diameter roll piece 3j, allowing for efficient suction of liquid.

Figure 6(c) is a cross-sectional view showing a third embodiment of a roll unit using roll pieces with a coating layer. The roll unit 41 shown in this figure is an example in which small-diameter roll pieces 3a with no coating layer are alternately stacked with large-diameter roll pieces 3k with coating layers formed on the left and right sides where they contact the small-diameter roll pieces 3a. This embodiment forms a more limited water channel inside the large-diameter roll pieces 3k, allowing for efficient liquid suction.

Figure 6(d) is a cross-sectional view showing a fourth embodiment of a roll unit using roll pieces with a coating layer. The roll unit 51 shown in this figure is an example in which roll pieces 3b with a large outer diameter and no coating layer are alternately stacked with roll pieces 3l with a small outer diameter and a coating layer formed on the left side of the figure where they contact the roll pieces 3b with a large outer diameter. This embodiment preferentially forms water channels inside the roll pieces 3b with a large outer diameter, allowing for efficient suction of liquid. Furthermore, the improved rigidity of the roll pieces 3l with a small outer diameter prevents excessive tilting or depression when they come into contact with the surface to be cleaned, reducing the likelihood of gaps and allowing for efficient suction of liquid.

Figure 6(e) is a cross-sectional view showing a fifth embodiment of a roll unit using roll pieces with a coating layer. The roll unit 61 shown in this figure is an example in which roll pieces 3b with a large outer diameter and no coating layer are alternately stacked with roll pieces 3m with a small outer diameter and a coating layer formed on the left and right side surfaces where they contact the roll pieces 3b with a large outer diameter. In this embodiment, the rigidity of the roll pieces 3m with a small outer diameter is further improved compared to the roll pieces 3l with a small outer diameter in Figure 6(d). This prevents excessive tilting or depression when coming into contact with the surface to be cleaned, and allows for more efficient liquid absorption.

Figure 6(f) is a cross-sectional view showing a sixth embodiment of a roll unit using roll pieces with a coating layer. The roll unit 71 shown in this figure is an example in which a small-diameter roll piece 3l with a coating layer formed on the portion of the roll piece 3j with a larger diameter on the left side of the figure and a large-diameter roll piece 3j with a coating layer formed on the portion of the roll piece 3l with a smaller diameter on the right side of the figure are alternately stacked, with the coating layers of the roll pieces 3j and 3l contacting each other. This embodiment combines the functions of both the large-diameter roll piece 3j described in Figure 6(b) and the small-diameter roll piece 3l described in Figure 6(d). Furthermore, by arranging the coating layers so that they contact each other, the roll pieces support each other, further reducing tilting and depression when coming into contact with the surface to be cleaned, and allowing for more efficient liquid suction.

Figure 6(g) is a cross-sectional view showing a seventh embodiment of a roll unit using roll pieces with a coating layer. The roll unit 81 shown in this figure is an example in which roll pieces 3n with a small outer diameter, on which a coating layer is formed on the portion of the right side of the figure where it contacts the roll piece 3j with a large outer diameter, and roll pieces 3j with a large outer diameter, on which a coating layer is formed on the portion of the right side of the figure where it contacts the roll piece 3n with a small outer diameter, are alternately stacked. This embodiment is composed of the roll piece 3j with a large outer diameter described in Figure 6(b) and the roll piece 3l with a small outer diameter described in Figure 6(d), with the coating layer formed on the right side of the figure. While the basic function is as described above, the coating layer is distributed approximately evenly across the entire roll, which stabilizes the shape of the entire roll.

Figure 6(h) is a cross-sectional view showing an eighth embodiment of a roll unit using roll pieces with a coating layer. The roll unit 91 shown in this figure is an example in which roll pieces 3m with a small outer diameter, on which a coating layer is formed on the portion of the left and right side surfaces that contact the roll pieces 3k with a large outer diameter, are alternately stacked, and roll pieces 3k with a large outer diameter, on which a coating layer is formed on the portion of the left and right side surfaces that contact the roll pieces 3m with a small outer diameter, are stacked, so that the coating layers of the roll pieces 3m and 3k contact each other. This embodiment combines the functions of both the large-diameter roll pieces 3k of Figure 6(c) and the small-diameter roll pieces 3m of Figure 6(e). Furthermore, by arranging the coating layers so that they contact each other, the roll pieces support each other. Compared to the roll unit 81 of Figure 6(f), tilting and depression upon contact with the surface to be cleaned are further suppressed, allowing for more efficient liquid suction.

The roll according to the present invention is used as a roll for removing, squeezing, washing, and sucking water, oil, or liquid chemical components adhering to the surface to be washed of a steel plate, a non-ferrous metal plate, a resin plate, glass, paper, or a film-like sheet.

DESCRIPTION OF SYMBOLS 1, 11, 21, 31, 41, 51, 61, 71, 81, 91, 101, 111 Roll portion 2, 12 Base 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j, 3k, 3l, 3m, 3n, 3o, 3p, 3q, 3r Roll piece 4a, 4b, 14a, 14b Flange 5, 15a, 15b Rotation shaft 6, 16a Discharge hole 7 Hole portion 8 Step 9a, 9b Fastener 10, 20 Roll 13a, 13b Shaft 16b Cavity portion 17a, 17b Drive means 18a, 18b Joint 19a, 19b Piping 22 Vacuum pump 23, 24 Circular hole portion 28 Slit 29 Coating layer 30 Glass plate 32 Groove 33 Annular groove 34 Through hole 35 Suction groove 36 Small diameter portion 40 Cleaning device

Claims (11)

A roll used to remove, squeeze, wash and suck up water, oil or liquid chemicals adhering to the surface of steel plates, non-ferrous metal plates, resin plates, glass, paper or film sheets.
The roll has a roll portion and a base,
The roll portion has a substantially annular shape and is formed by stacking two types of roll pieces having different outer diameters on the outer periphery of the base,
the base has a substantially disk-like or substantially annular shape, and includes two flanges that come into contact with the roll pieces at both ends, and a rotation shaft to which each of the two flanges is engaged or fixed,
At least one side of the rotating shaft has a discharge hole, and when the device is used in a state connected to a suction device, liquid in the roll portion is discharged to the outside through the discharge hole,
A roll characterized in that the outer surface of the roll portion has a plurality of steps formed along the longitudinal direction, and the outer diameter of the flange is smaller than the outer diameter of the roll portion having a smaller outer diameter.
The roll according to claim 1, characterized in that the roll pieces are made of nonwoven fabric and/or synthetic resin porous material. The roll described in claim 1 or 2, characterized in that the roll piece with a larger outer diameter has a larger internal porosity than the roll piece with a smaller outer diameter. The roll described in any one of claims 1 to 3, characterized in that a coating layer having lower liquid permeability than the synthetic resin porous body is formed on the side of the roll piece with a larger outer diameter and/or the roll piece with a smaller outer diameter. A roll according to any one of claims 1 to 4, characterized in that the roll piece with a larger outer diameter has a shorter length in the thickness direction than the roll piece with a smaller outer diameter. The roll described in any one of claims 1 to 5, characterized in that the outer peripheral end of the roll piece with the larger outer diameter is formed with a slit. When the roll part is in contact with the surface to be cleaned,
The roll according to any one of claims 1 to 6, characterized in that the outer peripheral end of the roll segment with a larger outer diameter is inclined, and the side surface of the roll segment with a larger outer diameter and the end surface of the roll segment with a smaller outer diameter are in contact with each other. The roll described in claim 7, characterized in that the thickness direction of the small diameter portion, which is formed by stacking one or more roll pieces with a small outer diameter, is less than half the difference in outer diameter from the roll piece with a large outer diameter. The roll described in any one of claims 1 to 8, characterized in that the roll pieces have suction grooves formed radially from the inner surface to the outer surface. The roll described in any one of claims 1 to 9, characterized in that the roll piece with a larger outer diameter has a groove formed in the circumferential direction on the outer surface. The roll according to any one of claims 1 to 10, wherein an annular groove is formed on one side surface of the roll piece having a larger outer diameter.