JPH0342964B2 - - Google Patents

Description

[Detailed description of the invention]

``Industrial Application Field'' The present invention relates to a moisture suction ringer roll for effectively sucking and removing moisture adhering to the surface of metal strips mainly made of steel or non-ferrous metals (hereinafter simply referred to as steel). be. ``Prior art and its problems'' In order to remove moisture from the surface of a steel strip, conventionally, as shown in Fig. 1, rubber rolls (water-absorbing ringer rolls) A, whose roll surfaces are covered with an elastic material such as rubber, are used.
B was used to sandwich a metal strip (steel plate) C and press down to push out and remove moisture. However, with this method, there are problems with thin metal strips, such as wrinkles on the surface of the metal strip or meandering in the metal strip, resulting in poor quality. Another method is to remove moisture using hot air from a dryer or compressed air, but these methods consume a large amount of energy, such as the steam required to heat the air and the blower power required to spray. There is. As an improvement over such conventional techniques, a ringer roll method and device for sucking moisture from the surface of a steel strip have been disclosed in Japanese Patent Application Laid-Open No. 59-69186 and Japanese Patent Application Laid-open No. 59-6918.
It is known from Publication No. 110916. However, in the invention of this document, the fiber material on the roll surface,
There are no conditions or elements added to the wall thickness, etc., and the target is only general commercially available fiber material coated rolls. Furthermore, even if the fibrous material-coated roll of the invention disclosed in this technical document is equipped with a vacuum suction mechanism and can suck and remove the moisture that has been absorbed and impregnated into the roll body, the ability to absorb moisture from the surface of the steel strip, that is, drain the water, is insufficient. The above-mentioned rubber ringer roll does not have any performance superior to removing water by drying with a dryer. For that reason, the threading speed is 100 mpm~
There were difficulties in practical application, particularly in process lines of the steel industry, where the threading speed is generally 1000 mpm (in the present invention, this sheet passing speed is referred to as high-speed transition). In addition, iron powder, foreign substances, etc. may enter the extremely fine gaps between the fibers of the fiber material, causing clogging, resulting in a decrease in the suction function, or hardening and development on the surface of the roll body, which may cause problems in practical use. A number of problems were identified. In addition, similar to the present invention, as an invention for removing water sucked into the roll body through a suction function, Japanese Patent Publication No. 49-27014 discloses a roller for squeezing water, oil, chemicals, etc. during various steel sheet manufacturing processes. be. However, since this invention has a structure in which a resin-containing nonwoven fabric is simply wrapped around a roll body having a suction function, it is weak against a steel plate running at high speed and has poor durability. In addition, peeling of the joints of the nonwoven fabric strip is likely to occur, making it unsuitable for removing moisture from a steel strip running at high speed according to the present invention. This invention appears to include elements that tend to cause so-called edge marks. Further, similar to the present invention, there is an elastic roller disclosed in Japanese Utility Model Publication No. 48-35632 as a device for stacking a large number of disk-like members. However, since this device uses a ring material that is a mixture of an elastic material and a fibrous material, no porous voids are generated in the roll body (so-called capillary phenomenon does not occur), and the suction function is improved. This is a ring material that is completely unsuitable for shaft bodies that have been given this. Therefore, the present invention aims to provide a water absorbing ringer with a structure that almost completely removes moisture adhering to the surface of a steel strip moving at high line speeds through the capillary action and suction function of the roll body. I believe this is a material that cannot be used for rolls. "Means for Solving the Problems" In view of the above, the present invention has discovered roll materials and structural conditions that should advantageously solve the problems. That is, the present invention has a threading speed of 100 mpm to 1000 m.
A rubber ringer roll is used to drain the surface of the pm steel strip.
This product provides a water-absorbing Ringer roll that has a capacity equivalent to or higher than that of a dryer. Ultrafine fiber entangled bodies using approximately 1 μm to 3 μm polyester fibers, other ultrafine fiber entangled bodies made of ultrafine fiber nonwoven fabric materials and elastic bodies such as rubber, synthetic resin elastic bodies, and artificial leather materials mainly made of ultrafine fiber nonwoven fabric materials. etc. are punched out into a disc shape and laminated and press-molded to form a roll body, and the wall thickness of this roll body is 20 mm to 50 mm. The roll body having such a configuration is provided on the outer peripheral surface of a shaft body having a suction function, and a vacuum suction structure is connected to this shaft body. As a result, it is possible to demonstrate the draining ability exceeding that of conventional equipment, reduce the number of rubber ringer rolls, and reduce the number of rubber ringer rolls.
By eliminating the need for a dryer, it can contribute to energy savings such as power savings, steam savings, and pressure air savings, and it also enables high-speed threading of thin metal strips. ``Function'' Next, to explain the outline of the function of the present invention, the water-absorbing ringer roll of the present invention can be used in a process line after processing chemicals and water (hereinafter simply referred to as water) in a steel cold rolling mill, etc., using other rubber ringer rolls. The water-absorbing ringer rolls are arranged in a pair, upper and lower, and the water-absorbing ringer rolls and the rubber ringer rolls are arranged in pairs. Therefore, the water sucked into and impregnated into the roll body of this water-absorbing ringer roll is transferred from the roll body to the through hole to the hollow part to the opening to the through hole to the hose by the suction action of a vacuum pump (not shown). It is sucked in and discharged to the outside. As a result, water adhering to the steel surface is suctioned and removed, and the steel is transported to the next process line. ``Embodiment'' Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. Reference numeral 1 denotes a shaft body having bearing parts 5, 5a at both ends, and this shaft body 1 has a hollow portion facing in the axial direction. 2 is opened, and a large number of through holes 6 communicating with the hollow portion 2 are bored in the circumferential surface thereof. Further, at least one of the shaft bodies 1 has an opening 8, and this opening 8 communicates with the hollow portion 2 and also with a through hole 10 formed in at least one of the bearing portions 2 in the axial direction. This opening 8 is communicated with a suction mechanism (not shown) such as a vacuum pump via the through hole 6 of one of the bearings 2 and the hose 11. A roll body 7, which will be described later, is provided on the outer periphery of the shaft body 1 configured in this manner via side plates 13, 13a, and the wall thickness 3 of this roll body 7 is 20 mm to 50 mm, preferably about 40 mm. The front and back are ideal. Note that this wall thickness 3 is defined as the dimension from the key portion 15 that restrains the shaft body 1 and the ultrafine fiber entangled body 14 in the rotational direction, as shown in FIG. By the way, as the ultrafine fiber entangled body 14, an ultrafine fiber entangled body 14 mainly made of an ultrafine fiber nonwoven fabric material with a wire diameter of approximately 1 μm to 3 μm, or in some cases, a polyester fiber with a wire diameter of approximately 1 μm to 3 μm is used as the main material. Ultrafine fiber entangled body 14, other ultrafine fiber entangled body 14 made of ultrafine fiber nonwoven fabric material with excellent wear resistance and urethane elastic body such as urethane rubber or urethane resin, ultrafine fiber nonwoven fabric material with excellent chemical resistance and silicone rubber , an ultrafine fiber entangled body 14 made of a silicone elastic body such as a silicone resin, an ultrafine fiber entangled body 14 of an artificial leather material mainly made of an ultrafine fiber nonwoven material, etc. These are punched into a disk shape and laminated press molded. The roll main body 7 is constructed by stacking a large number of sheets in a crimped manner. 9 in the diagram
is a rotating joint. The water-absorbing Ringer roll constructed as described above is installed in a device installed in a process line of a cold rolling mill, with bearings 5 and 5a at both ends. Next, the working state of the present invention will be explained in detail by comparing the water-absorbing ringer roll using a conventional non-woven fabric material and its functions such as water removal ability. , are placed in parallel with other rubber ringer rolls in the process line after water (hereinafter simply referred to as water) treatment, and these water-absorbing ringer rolls are arranged in a pair of upper and lower parts.
Further, this water absorbing ringer roll and a rubber ringer roll or the like are installed in a pair. Therefore, the water sucked into and impregnated into the roll body of this water-absorbing ringer roll is transferred from the roll body 7 to the through hole 6 to the hollow part 2 to the opening 8 to the through hole 10 by the suction action of a vacuum pump (not shown). →It is sucked through the hose 11 and discharged to the outside. As a result, water adhering to the steel surface is sucked out and removed, and the steel is transported to the next process line. In addition, FIG. 2 shows a water-absorbing Ringer roll using a conventional nonwoven fabric material (hereinafter simply referred to as a conventional water-absorbing Ringer roll) and a water-absorbing Ringer roll according to the present invention (hereinafter simply referred to as a water-absorbing Ringer roll of the present invention).
According to the results of an experiment comparing the water removal ability when both are equipped with a vacuum suction function and connected to a vacuum pump, it was found that with the conventional water absorption ringer roll, water adheres to the surface of the metal strip before water absorption treatment. The moisture content is 1.4g/ ^m2 to 1.7g/ ^m2 as shown by ○.
In contrast, the amount of moisture adhering to the surface of the metal strip after water absorption treatment is in the area of 1.0g/m ² to 1.3g/m ² as shown by ●, and it is difficult to absorb much moisture. It can be seen that there has been no change in the results, and the so-called results have not improved. However,
In the water-absorbing ringer roll of the present invention, the amount of moisture adhering to the surface of the metal strip before the suction treatment is in the area of 2 g/m ² to 2.5 g/m ² as shown by △, whereas after the water absorption treatment The amount of water adhering to the surface of the metal strip is 0.1g/
m ² to 5 g/m ² , making it possible to significantly improve its moisture suction function. By the way, it has been found that one of the factors that determines the moisture absorption function is the wire diameter of the fiber material. That is, as shown in the table below, the wire diameter of the conventional water-absorbing Ringer roll is 3.9 μm, whereas the wire diameter of the water-absorbing Ringer roll of the present invention is 1.6 μm.
, which is approximately 1/2.

[Table] In addition, one of the factors that can be expected to improve the moisture absorption function mentioned above is the influence of the fiber material.
This becomes clear from the experimental results shown in Figure. That is, in the ultrafine fiber nonwoven fabric material employed in the water-absorbing Ringer roll of the present invention, the upward distance of water increases rapidly with the passage of time, as shown by the circle in the figure. On the other hand, in the case of nonwoven fabric materials used in conventional water-absorbing ringer rolls, the upward distance of moisture is quite gradual over time, as shown by △. There is a clear difference in the water absorption capacity of the two. Furthermore, it has been found that the wall thickness 3 of the roll body 7 and the line speed of the suction ringer roll have a large influence on the superiority or inferiority of the moisture suction function as described above, so the results shown in Figs. 4 and 5. This will be explained with reference to the experimental results diagram. As shown in Figure 4, the threading speed is 100m.
In a low-speed line of pm to 300 mpm, the water suction ability could be demonstrated even when the wall thickness of the roll body 7 was 50 mm. However, the threading speed is 300 mpm to 1000 m.
In the high-speed line called pm, the roll body 7
It became clear that effective moisture suction ability could not be achieved unless the wall thickness 3 was set to 40 mm, and the threading speed
In high-speed lines from 300mpm to 1000mpm,
In order to maintain moisture suction ability, the roll body 7
The wall thickness 3 will have a direct effect. This is because, as revealed by the experimental results of the capillary test shown in Figure 3 above, when the wall thickness 3 increases, there are many areas where water slowly rises over a long period of time, which reduces the efficiency. In addition to being disadvantageous when applying suction to suck out moisture,
This seems to be based on the same principle as that, as shown in FIG. 5, when the wall thickness 3 is in the range of 30 mm to 50 mm, the moisture suction function is fully exhibited. Incidentally, the fourth
The figure shows that even with the same wall thickness of 3, as the threading speed increases, the moisture suction ability decreases, and it is known that the moisture suction ability can be restored by increasing the thickness to the desired thickness of 3. It was done. The problem with the wall thickness 3 of the roll body 7 is not only the moisture suction function but also the strength limit at the fitting part with the shaft body 1.
It is also necessary to consider the cost aspect. Then,
Considering these circumstances, it seems that the preferred wall thickness 3 of the metal strip at a threading speed of 100 mpm to 1000 mpm is 20 mm to 50 mm. Next, in the example shown in Fig. 7, the water-absorbing ringer roll of the present invention is mounted next to the rubber ringer roll mounted in three stages, with a thickness of 1.2 mm x width of 1300 mm.
When a metal strip of 1.5 mm in diameter was sampled using the method shown in Figure 9A at a line speed of 300 mpm, the amount of moisture on the surface of the metal strip was detected by sampling directly from the surface of the metal strip, as shown in Figure 9B. The water draining evaluation results have been revealed. According to this, it has an extremely good moisture suction function, has an excellent draining effect, and has a sufficient draining effect even without operating the dryer or Edge wiper, and also has a three-tiered rubber ringer roll. A sufficient draining effect can be expected without operating the rubber ringer roll at the top. Next, in the example shown in Fig. 8, the water-absorbing ringer roll of the present invention is supported between two stages of rubber ringer rolls, and the line is 0.8 mm thick x 900 mm wide.
When we checked the draining state of the metal strip edge shown in Figure 10 by applying a piece of cardboard directly to the surface of the metal strip at a line speed of 700 mpm, we found that there was almost no moisture attached to the cardboard piece. The water draining evaluation results were revealed. According to this, it was found that the water suction function was extremely good and the draining effect was excellent, and it was visually confirmed that the water draining condition in the center of the metal strip was extremely good. Furthermore, in an ultrafine fiber entangled body consisting of an ultrafine fiber nonwoven fabric material and an elastic body such as rubber or synthetic resin (hereinafter simply referred to as an elastic body), the elasticity possessed by the elastic body serving as a medium or the elasticity of the ultrafine fiber nonwoven fabric material Experimental results have also shown that it has a positive effect on That is, the ultrafine fiber nonwoven material itself has elasticity,
Utilizing this elastic recovery ability, the compressed water-absorbing ringer roll of the present invention is able to recover and absorb moisture from the surface of the next metal strip that is quickly transported. The elastic recovery ability of the elastic body interposed and impregnated between the ultrafine fiber nonwoven fabric materials is added to the self-elastic recovery ability of the material, and the synergistic effect of these causes the elastic recovery ability imparted to the roll body 7. A significant improvement in water absorption capacity can be expected. Further, due to the above-mentioned elastic recovery ability, even if the roll body 7 of the water-absorbing ringer roll of the present invention is pressed against a sharp part such as an edge part of a metal strip, the roll body 7 is gently pressed as a result. In other words, the roll body 7
This has the effect of reducing the impact on the roll body 7, and the degree of breakage, wear, etc. of the roll body 7 can be extremely reduced, and through the reduction of the breakage, etc., it is possible to prevent a decrease in the draining ability. It has been found that the water-absorbing Ringer roll of the present invention can be used for more than one year if modified. ``Effects of the Invention'' According to the present invention, the roll body of the water-absorbing ringer roll is composed of a disc-shaped ultrafine fiber entangled body mainly made of an ultrafine fiber nonwoven fabric material having a wire diameter of 1 μm to 3 μm, and the roll Increase the wall thickness of the main body to 20
Since it is configured to be from mm to 50 mm, it can transfer at high speed.
The water adhering to the surface of the steel strip moving at a so-called high line speed can be almost completely removed by suction through the capillary action and suction function of the roll body, and this type of roller is ideal for removing water from steel strips. It is an excellent invention because it is durable even when used on steel strips that run at high speeds, and can be used for a relatively long period of time. In addition, through the efficient suction removal described above, it is possible to drain water from the surface of the metal strip using low energy, resulting in energy savings such as a reduction in the number of rubber ringer rolls, power savings by eliminating the need for a dryer, steam savings, and pressure air savings. can contribute to In addition, the roll body is made up only of disc-shaped ultrafine fiber entangled bodies with the above-mentioned wire diameter, and the wall thickness of the roll body is set to 20 mm to 50 mm, so even when used for high-speed moving steel strips, To enable stable draining and removal over a relatively long period of time. It also has the effect of producing high-quality steel strips without producing edge marks. In addition, high-speed threading of thin metal strips is possible, and wrinkles that may occur on the surface of the thin metal strips are completely eliminated.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing a conventional example, Fig. 2 is an experimental result diagram comparing the water removal ability of the water-absorbing Ringer roll of the present invention and a conventional water-absorbing Ringer roll, and Fig. 3 A and B are the ultrafine fibers of the present invention. Figures 4 and 5 are diagrams showing the results of an experiment comparing the moisture suction force of a non-woven fabric material and a conventional non-woven fabric material. FIG. 6 is a cross-sectional view showing an embodiment of the water-absorbing Ringer roll of the present invention, FIGS. 7 and 8 are schematic diagrams showing an example of the equipment state of the water-absorbing Ringer roll of the present invention, and FIG. 9A is an experimental diagram. FIG. 10 is a plan view showing an example of the experimental method shown in FIG. 8. FIG. 1...Shaft body, 2...Hollow part, 3...Wall thickness,
5, 5a... Bearing part, 6... Through hole, 7... Roll body, 8... Opening, 10... Through hole, 13, 13
a... Side plate, 14... Ultrafine fiber entangled body, 15...
key part.

Claims (1)

[Scope of Claims] 1. A water-absorbing ringer roll having a suction function that sucks moisture adhering to the surface of a steel strip moving at high speed. A shaft body formed with a through hole and a disk-shaped ultrafine fiber entangled body mainly made of an ultrafine fiber nonwoven material with a wire diameter of 1 μm to 3 μm are superimposed on the outer periphery of the shaft body in a crimped manner. , a roll body with a wall thickness of 20 mm to 50 mm, and a water-absorbing ringer roll that can remove moisture adhering to the surface of a steel strip that moves at high speed. 2. The ultrafine fiber entangled body is made of an ultrafine fiber nonwoven fabric material and a urethane elastic body such as a urethane resin or urethane rubber, which enables removal of moisture adhering to the surface of a steel strip that moves at high speed as described in claim 1. Absorbent ringer roll. 3. The ultrafine fiber entangled body is made of an ultrafine fiber nonwoven fabric material and an elastic body such as a rubber elastic body or a synthetic resin elastic body, and it is possible to remove moisture adhering to the surface of a steel strip that moves at high speed as described in claim 1. Water-absorbing ringer roll. 4. A water-absorbing ringer roll capable of removing moisture adhering to the surface of a steel strip moving at high speed according to claim 1, wherein the ultrafine fiber entanglement is an artificial leather material.