JP2000191200A - Carrying method of strip metal sheet and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To favourably carry an aluminium web W by using a rubber roller for tensile force retention which can be easily manufactured in a manufacturing process of a PS board. SOLUTION: A foaming rubber roller 30 is adopted as a rubber roller for tensile force retention to be arranged in a manufacturing process. This foaming rubber roller 30 is manufactured by mixing a foaming agent at the time of kneading rubber, and fine irregularities are naturally formed on its surface. Consequently, retention force of the foaming rubber roller 30 against the aluminium web W is improved without after-processing of rough processing, etc., 15 μm-90 μm of surface roughness is favourable, and 150 degrees-300 degrees of a winding angle of the aluminium web W is favourable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for transporting a strip-shaped metal plate, and more particularly to a PS plate (presensitized ozone).
ffset plate)
The present invention relates to a transport method and an apparatus for transporting the same along the manufacturing process.

[0002]

2. Description of the Related Art In a continuous surface treatment line and a continuous coating line for a strip-shaped metal plate, the tension of the strip-shaped metal plate suitable for each line process is set in advance, and in order to maintain a difference in tension between the processes. And a rubber roller for maintaining tension. This tension-retaining rubber roller has a function of controlling the rotation speed and the torque by an electric motor, and preventing the slip between the belt-shaped metal plate and the belt-shaped metal plate while transferring the belt-shaped metal plate while maintaining the tension between processes. I have.

Conventionally, this type of tension-holding rubber roller has a roughened surface, and a groove having a groove parallel to the axis of the tension-holding rubber roller (Japanese Utility Model Publication No. 3-4408). Japanese Patent Application Laid-Open No. Hei 5 (1993) -139, in which a groove is formed in a direction perpendicular to the axis of a tension holding rubber roller.
No. 162912), a roller in which a groove inclined with respect to the axis of the roller is formed (Japanese Utility Model Application Laid-Open No. 56-122509), and a device in which a large number of air holes are formed in the surface (Japanese Utility Model Application Laid-Open No. 56-122). No. 122510).

[0004]

However, the conventional tension retaining rubber roller is manufactured by performing post-processing such as roughening, grooving, and punching on the surface thereof. Time and cost). In addition, even in the grooved roller, in the chemical or cleaning water used in the surface treatment step or the cleaning device, the outer corners of the groove are quickly worn out due to swelling of the rubber, and the area of the portion that comes into contact with the strip-shaped metal plate. And the holding power is reduced.

[0005] The present invention has been made in view of such circumstances, and a method of transporting a strip-shaped metal plate capable of favorably transporting the strip-shaped metal plate by using a tension-maintaining rubber roller that can be easily manufactured. It is intended to provide the device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for manufacturing a belt-shaped metal plate by holding a tension difference of the band-shaped metal plate during a manufacturing process of the band-shaped metal plate while holding the belt-shaped metal plate with a tension holding rubber roller. In the method of transporting a strip-shaped metal plate to be transported,
The tension holding rubber roller has a surface roughness of 15 μm to 9 μm.
The belt-shaped metal plate is formed of an elastic material having a thickness of 0 μm, and the belt-like metal plate is wound around the tension-holding rubber roller and transported.

According to the present invention, in order to achieve the above object, a difference in tension of a strip-shaped metal plate generated during a manufacturing process of the strip-shaped metal plate is defined as:
In the belt-shaped metal plate transporting device for transporting the belt-shaped metal plate while holding the belt-shaped metal plate with the tension-holding rubber roller, the tension-holding rubber roller is a foamed rubber roller. According to the first aspect of the present invention, since the tension-retaining rubber roller is formed of an elastic material having a surface roughness of 15 μm to 90 μm, the tension-retaining rubber roller can be easily retained without performing post-processing such as roughening. Rubber rollers can be manufactured. In addition, since the surface roughness is 15 μm to 90 μm, the holding power for the band-shaped metal plate is excellent, and therefore, the band-shaped metal plate can be transported favorably.

According to the second aspect of the present invention, the winding angle of the belt-shaped metal plate with respect to the tension holding rubber roller is set to 150 degrees or more.
Since the angle is set to 300 degrees, the band-shaped metal plate can be transported in a state where the holding force for the band-shaped metal plate is sufficiently exhibited. According to the third aspect of the present invention, since the foamed rubber roller is employed as the tension holding rubber roller, minute irregularities are naturally formed on the surface thereof. For this reason, if a foamed rubber roller is adopted, without performing post-processing such as roughening,
Since the surface is rough, it is possible to obtain a holding force equal to or higher than that of a tension holding rubber roller that has been subjected to post-processing such as roughening.

According to the present invention, attention is paid to the fact that the foamed rubber roller has good swelling resistance, and this foamed rubber roller is immersed and arranged in the treatment liquid stored in the treatment tank in the treatment step. The tension of the band-shaped metal plate passing through the processing liquid was changed by arranging the band-shaped metal plate around the foamed rubber roller, disposed between the processing solution tanks in the tank.

When such a foamed rubber roller is employed,
Since the surface of the foamed rubber roller has no scratches due to machining, the liquid chemical used and the cleaning water liquid do not easily penetrate into the rubber of the foamed rubber roller, so they do not swell. Since the surface roughness can be maintained, the holding force can be maintained. Therefore, the foamed rubber roller of the present invention can be particularly effectively applied to a transfer device that needs to change the tension of the band-shaped metal plate in the treatment tank and convey the band-shaped metal plate.

According to the fifth aspect of the present invention, the belt-shaped metal plate passing through the cleaning device is wound around a foamed rubber roller and transported. Also in this case, since the foamed rubber roller does not swell with the washing water, it is possible to maintain the holding force on the band-shaped metal plate. Therefore, the foamed rubber roller of the present invention can be provided also in a cleaning device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a method and an apparatus for transporting a strip-shaped metal plate according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an explanatory view showing a production process of a PS plate to which the present invention is applied. The PS plate manufacturing process 10 shown in FIG. 1 includes a surface treatment process 12, a coating process 14, and a drying process 16. In the manufacturing process 10, the aluminum web W as a support of the PS plate is:
From the state of being wound on the coil, the sheet is conveyed to the surface treatment step 12 by the feeding device 18, and thereafter, is wound up by the winding device 20 via the coating step 14 and the drying step 16. Reference numeral 22 denotes a pass roller that guides the conveyance of the aluminum web W, and reference numeral 24 denotes a tension holding rubber roller that holds the tension during the process of the aluminum web W. A plurality of tension holding rubber rollers 24 are provided at predetermined positions in the manufacturing process 10. in this case,
As the tension holding rubber roller 24, one having the same size may be used, but one having a different diameter may be used depending on the installation location. During the manufacturing process, a conventional type rubber roller for holding tension may be mixed. Even in this case, FIG.
, The same reference numeral 24 is used. The tension holding rubber roller 24 will be described later.

In the surface treatment step 12, an anodizing tank 26 is provided. An electrolytic solution 28 is stored in the anodizing tank 26, and while the aluminum web W is being conveyed in the electrolytic solution 28, the aluminum web W
An anodic oxide film is formed on the surface of the substrate. Surface treatment step 12
Is transported to the cleaning device 1 where the aluminum web W is cleaned by the cleaning water sprayed from the upper and lower sprays 2 and 2. Then, the aluminum web W is wound around the tension holding rubber rollers 24, 24 and the like disposed downstream of the sprays 2, 2 in the cleaning device 1 and is conveyed toward the coating process 14. Then, the aluminum web W is transported to a coating step 14, where a photosensitive material is coated on the surface. Examples of the coating method of the photosensitive material include coating methods such as a wool coat, a bar code, and a dip coat. Further, the surface of the photosensitive layer of the aluminum web W is matted while passing through the coating step 14. Examples of the matting method include a method of applying, printing, heat-adhering, or electrostatically applying a mat material. When the surface of the photosensitive layer is matted in this manner, the vacuum adhesion between the plate and the film can be improved.

The aluminum web W that has passed through the coating step 14 is conveyed to a drying step 16, where the photosensitive layer and the mat material are dried by hot air. And drying step 1
The aluminum web W that has passed through 6 is wound into a coil shape by the winding device 20, and then transported to the next step. By the way, the tension holding rubber roller 24
Is disposed between the respective steps 12, 14, and 16 of the manufacturing process 10, and the inside of the anodizing tank 18 and the cleaning device 1
Is located within.

The tension holding rubber roller 24 is a roller for mainly holding the tension between the steps 12, 14 and 16 of the aluminum web W. The rotation speed and the torque are controlled by an electric motor (not shown).
It has a function of transporting the aluminum web W while preventing the slip with the aluminum web W while maintaining the tension therebetween.

In this embodiment, a foamed rubber roller is used as the tension holding rubber roller 24. This foamed rubber roller is manufactured by mixing a foaming agent when kneading the raw rubber, and after the production, minute irregularities are naturally formed on the surface thereof. For this reason, when a foamed rubber roller is employed, its surface is roughened without post-processing such as roughening, so that a high holding force equal to or higher than that of a roller subjected to post-processing such as roughening is obtained. Obtainable.

Further, since the foamed rubber roller does not perform rough surface processing or mechanical processing for grooving, the type of raw rubber may be synthetic rubber [imprene rubber (IR), butadiene rubber (BR), styrene butadiene rubber (SBR). ), Butyl rubber (IIR), ethylene propylene rubber (EPM,
EPDM), chloroprene rubber (CR), chlorinated polyethylene (CM), nitrile butadiene rubber (NBR),
Nitrile isoprene rubber (NIR), acrylic rubber (A
CM, ANM), urethane rubber (U), polysulfide rubber (T), etc.], and natural rubber (NR) which could not be used as a raw material of a tension-retaining rubber roller in the past can also be used.

On the other hand, the winding angle θ of the aluminum web W with respect to the tension holding rubber roller 24 is set to about 180 to 200 degrees as shown in FIG. At this angle θ, the rubber roller 2 for holding the aluminum web W in tension
4, the holding force of the tension holding rubber roller 24 on the aluminum web W can be sufficiently exerted.

[0019]

FIG. 3 shows a foamed rubber roller (tension retaining rubber roller) 30 manufactured by kneading a foaming agent. The foamed rubber roller 30 is manufactured by forming foamed rubber around the core 32 in a roller shape. The foam rubber,
For example, while kneading a mixture of a base rubber such as a vulcanizing agent, a vulcanization accelerator, a reinforcing agent, a softening agent, an antioxidant, and the like, a mixture of ammonium chloride and sodium nitrite, sodium hydrogen carbonate, or It is formed by mixing a foaming agent such as trichlorofluoromethane and foaming the raw rubber to a predetermined foaming rate by heating or a chemical reaction. The foaming amount (rate) in this case is set to about 5 to 30% in order to give the foamed rubber roller 30 a predetermined hardness.

The hardness of the foamed rubber roller 30 of this embodiment is 8
5 degrees. Foam rubber roller 30 having a hardness of 85 degrees
Can be obtained by foaming using a raw material that should have a rubber hardness of 90 degrees. For reference, when foaming is performed using a raw material having a rubber hardness of 65 degrees, 55
The degree of foam rubber roller can be obtained. Rubber hardness 85
The foamed rubber roller 30 has a roller outer diameter of 500 mm, a roller surface length of 1725 mm, and a roller surface roughness of 6 mm.
It was 0.4 μm Rmax (see FIG. 4).

Here, width 1100 mm, thickness 0.24 m
m of aluminum web having a wrap angle of 180 degrees (T2 / T1, where T1 is the pre-roller tension, T
FIG. 5 shows actual measured data when the post-roller tension (see FIG. 2) is compared with a rubber flat roller and a grooved roller manufactured without kneading a foaming agent. In the graph of FIG. 5, the vertical axis indicates the holding force, and the horizontal axis indicates the line speed of the aluminum web. The mark ▲ indicates data of the foamed rubber roller 30 of the present embodiment, the mark □ indicates data of a grooved roller, and the mark デ ー タ indicates data of a flat roller.

As shown in the figure, it has been found that the grooved roller is superior to the flat roller in holding force, and the foamed rubber roller 30 of this embodiment is far superior to the grooved roller. Although not shown, the roller surface roughness is 15
The same results as described above were obtained with a wrap angle of 180 degrees for foamed rubber rollers having a μmRmax of 90 μmRmax.

On the other hand, the roller surface roughness is 15 μm
The expected effect could not be obtained with a foamed rubber roller of less than Rmax. This is considered to be due to a decrease in the holding power of the aluminum web due to a decrease in the gap between the aluminum web and the foamed rubber roller where air is interposed. Explaining the cause, when the aluminum web passes through the foamed rubber roller, the air whose pressure has increased in the gap is discharged to the outside by the rotation of the foamed rubber roller. However, when the transport speed of the aluminum web is high, the time during which the aluminum web and the foamed rubber roller are in contact with each other becomes short,
If the gap is reduced, it is not sufficiently discharged. Therefore, it is considered that the pressure of the non-discharged air reduced the holding force on the aluminum web.

The conventional roller whose surface has been roughened on the outer peripheral surface of the roller described in the section of the prior art must have a surface roughness of 10 μRmax or more due to the nature of the roughened surface. Can not. Therefore, the above-described problem also occurs in the roller subjected to the roughening. Further, even when a foamed rubber roller having a roller surface roughness exceeding 90 μm Rmax was used, the expected effect could not be obtained. This is considered to be due to a decrease in the holding force of the aluminum web due to a decrease in the contact area of the aluminum web with the foamed rubber roller.

On the other hand, when the roller surface roughness is 15 μm Rmax
Even when a 90 μm Rmax foam rubber roller is used,
When the lap angle was 150 degrees or less, the expected effect could not be obtained. This is also considered to be caused by a decrease in the holding force of the aluminum web due to a decrease in the contact area of the aluminum web with the foamed rubber roller.

The effect can be obtained even if the wrap angle is set to 300 degrees or more. However, when the wrap angle is more than 300 degrees, the holding force can be obtained with a simple pass roller without using a foamed rubber roller. As the significance of using the foamed rubber roller, the wrap angle is preferably set to 300 degrees or less. Therefore, in order to convey the aluminum web satisfactorily, the surface roughness is 15 μm to 90 μm.
m foam rubber roller and wrap angle of 15
It has been found that the angle may be set to 0 to 300 degrees.

The foamed rubber roller is conventionally provided only between the steps. However, since the foamed rubber roller of this embodiment has a high swelling resistance, it is stored in the anodizing tank 26 as shown in FIG. Even if it is immersed in the electrolytic solution 28 or disposed in the cleaning device 1, it does not wear and can maintain the holding force on the aluminum web W. Accordingly, the present invention can be applied particularly effectively to a transfer device that needs to transfer the aluminum web W while changing the tension of the aluminum web W in the processing tank 26 and the cleaning device 1.

The electrolytic solution 28 includes an electrolytic solution having no dissolving action (boric acid, tartaric acid, carbonate, etc.) and an electrolytic solution having dissolving action (sulfuric acid, chromic acid, oxalic acid, phosphoric acid, etc.). Therefore, it is preferable that the foamed rubber roller is immersed in an electrolytic solution having no dissolving action.

[0029]

As described above, according to the method and the apparatus for conveying a strip-shaped metal plate according to the present invention, the rubber roller for holding the tension is formed of an elastic material having a roughness of 15 μm to 90 μm. It is possible to easily manufacture a rubber roller for holding tension without performing post-processing such as described above. In addition, since the surface roughness is 15 μm to 90 μm, the holding power for the band-shaped metal plate is excellent, and therefore, the band-shaped metal plate can be transported favorably.

Further, according to the present invention, the winding angle of the band-shaped metal plate with respect to the tension holding rubber roller is set to a range of 150 to 300 degrees.
Since the setting is made to the degree, the band-shaped metal plate can be transported in a state where the holding force to the band-shaped metal plate is sufficiently exerted. Furthermore, according to the present invention, since the foamed rubber roller is employed as the tension-holding rubber roller, the tension-holding rubber roller can be easily manufactured without performing post-processing such as roughening of the surface. Further, since the foamed rubber roller has a high swelling resistance, even if it is immersed and disposed in the processing liquid stored in the processing tank in the processing step, it is also possible that the cleaning water such as a cleaning device is in a mist state. Even if it is arranged in an atmosphere, it does not wear and can maintain the holding force on the strip-shaped metal plate. Therefore, if a foamed rubber roller is used, it can be particularly effectively applied to a transfer device and a cleaning device that require changing the tension of the band-shaped metal plate in the processing tank and conveying the band-shaped metal plate.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a production process of a PS plate to which the present invention is applied.

FIG. 2 is an enlarged view of a tension holding rubber roller installed between a surface treatment step and a coating step in the production process of the PS plate shown in FIG.

FIG. 3 is a perspective view showing an embodiment of a rubber roller for holding tension.

FIG. 4 is a graph showing measured data of surface roughness of the tension holding rubber roller shown in FIG. 4;

FIG. 5 is a graph comparing the holding forces of a tension holding rubber roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Production process of PS plate 12 ... Surface treatment process 14 ... Coating process 16 ... Drying process 24 ... Rubber roller for tension retention 30 ... Foam rubber roller W ... Aluminum web

Claims (5)

[Claims] 1. A method of transporting a metal strip while holding a tension difference between the metal strips during a manufacturing process of the metal strip with a rubber roller for tension retention, wherein the rubber roller for tension retention is Surface roughness is 15 μm to 9
A method of transporting a metal strip, wherein the metal strip is made of an elastic material having a thickness of 0 μm, and the metal strip is wound around the tension-holding rubber roller and transported. 2. The belt-shaped metal plate according to claim 1, wherein a winding angle of the band-shaped metal plate with respect to the tension holding rubber roller is set to 150 degrees to 300 degrees, and the band-shaped metal plate is conveyed. Transport method. 3. A belt-shaped metal plate conveying device for conveying a band-shaped metal plate while holding a tension difference of the band-shaped metal plate generated during a manufacturing process of the band-shaped metal plate by a tension-maintaining rubber roller, A belt-shaped metal plate conveying device, which is a foamed rubber roller. 4. A process for producing the metal band is provided with a surface treatment step, wherein the foamed rubber roller is disposed in a surface treatment tank provided in the surface treatment step, and the metal band plate is provided on the foamed rubber roller. 4. The belt-shaped metal plate conveying device according to claim 3, wherein is wound. 5. A cleaning device for a strip-shaped metal plate is provided downstream of the surface treatment step, and a strip-shaped metal plate passing through the cleaning device is wound around the foamed rubber roller. Item 5. A conveying device for a band-shaped metal plate according to Item 4.