JPH0892779A - Drainer roll - Google Patents

Abstract

PURPOSE: To enhance liquid discharging efficiency and to improve liquid draining performance by forming many circumferential grooves on roll surfaces. CONSTITUTION: The surfaces of the liquid draining rolls 10 are provided with rubber linings having a thickness of 5 to 10mm, on which surfaces circumferential grooves 11 are formed. The pitch P of these circumferential grooves 11 is about 1.6mm the opening angle θ of the circumferential grooves 11 is 120 deg. and the depth of the circumferential grooves 11 is about 0.4mm. The contact state with a sheet 12 is roughened and the draining effect of the circumferential grooves 11 is lowered if the pitch P is too wide. Effective draining is not formed if the pitch is too narrow. About 0.5 to 2mm is, therefore, preferable. The depth (h) is preferably 0.1 to 1mm. The angle θ is selected from a range of 40 to 150 deg.. As a result, the slip between the rolls and the sheet is prevented and the deterioration of the sheet surface by generation of flaws, etc., is suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid draining roll which presses a target plate from both sides to remove the adhered liquid.

[0002]

2. Description of the Related Art In the steel plate plating process and pickling process,
Although the treatment liquid adheres to the steel plate in the treatment process, if the steel plate is conveyed to the next step in the state where the treatment liquid adheres, there arises a problem that the treatment liquid in the next step is diluted or causes a chemical reaction. Therefore, normally, the steel sheet to which the liquid adheres in one processing step is passed through the liquid draining means to remove the adhered liquid, and then conveyed to the next step. As the liquid draining means according to the conventional example, two smooth rolls are arranged to face each other, and the target steel plate is pressed from the front and back to drain the liquid.

[0003]

However, in the liquid draining means, a thin liquid film is formed between the roll and the front and back of the steel sheet, and the roll and the steel sheet are in a partial non-contact state or a complete non-contact state. , The following problem occurred. Draining of the liquid film becomes difficult, and drainage becomes insufficient. Since the roll and the steel sheet are in non-contact with each other, a speed difference is generated between the roll and the steel sheet, a slip occurs between the roll and the steel sheet, and a flaw accompanying the slip occurs on the front and back surfaces of the steel sheet. It causes quality deterioration. The reduction of the frictional force between the roll and the steel sheet causes the steel sheet to move in the width direction of the roll and meander, resulting in a reduction in the threadability. Due to insufficient drainage, a large amount of energy is required in the subsequent drying process. The present invention has been made in view of such circumstances, and improves the drainage performance, and also causes the occurrence of flaws and meandering due to the unstable contact state (partial contact, non-contact) between the roll and the plate that occurs during drainage. It is an object of the present invention to provide a liquid draining roll capable of preventing the above-mentioned problems, and further reducing the roll rolling force and downsizing the subsequent dryer.

[0004]

A method according to the above-mentioned object.
The described liquid-draining roll is a liquid-draining roll that is disposed so as to face each other and liquid-drains a wet plate that is pinched, and a large number of circumferential grooves are formed on the roll surface. Here, in addition to the case where the circumferential groove is formed in the direction perpendicular to the axis of the liquid cutting roll, the case where the groove which is slightly inclined has one or two or more spirals is also included. In addition, the mountain portion formed by the grooves on both sides has a triangular cross section, and also has a case where it has a flat surface that abuts on the plate. Further, the liquid draining roll includes a case where a round roll made of steel (including stainless steel) is coated with rubber or a plastic having elasticity. The present invention can be applied even when a circumferential groove is formed on the surface of one of the liquid draining rolls that are arranged to face each other.

[0005]

In the liquid draining roll according to claim 1, by providing a circumferential groove on the surface of the roll, the groove forms a drainage passage for the liquid which is sandwiched between the roll and the plate.
It enhances the liquid discharge efficiency and suppresses the formation of a liquid film formed between the roll and the plate. And, by imparting strength to the contact pressure between the roll and the plate by the groove, an unstable contact state of the roll and the plate is prevented, and a partial but reliable contact state of the roll and the plate is ensured. The slip is prevented, and the scratches on the plate surface due to the slip and the meandering of the plate are suppressed. Further, by obtaining a reliable contact state between the roll and the plate, a frictional force is generated between the roll and the plate, so there is no need to drive the roll to prevent slipping, It has become possible to deactivate one or both of the rolls.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a plan view showing a usage state of the liquid draining roll according to the first embodiment of the present invention, FIG. 2 is a side view of the same, and FIG.
Is a partial plan view of the liquid draining roll according to the second embodiment of the present invention, and FIG. 4 is a side view showing a usage state of the liquid draining roll according to another embodiment.

As shown in FIG. 1, a surface of a liquid cutting roll 10 according to a first embodiment of the present invention is provided with a rubber lining having a thickness of about 5 to 10 mm, and a circumferential groove 11 is formed on the surface thereof. Has been done. The pitch (P) of the circumferential groove 11 is about 1.6 mm, and the opening angle (θ) of the circumferential groove 11 is 120.
The depth (h) of the circumferential groove 11 is about 0.4 mm.

If the pitch (P) of the circumferential groove 11 is too wide, the contact state with the plate 12 becomes rough, and the drainage effect of the circumferential groove 11 is reduced. If it is too narrow, an effective drain groove is not formed. It is preferably about 0.5 to 2 mm. Further, if the depth (h) of the circumferential groove 11 is too small, the groove is not formed, and if it is too large, there is a problem that the groove wall is deformed by the rolling force. It is preferable to select within the range. The opening angle (θ) of the circumferential groove is affected by the groove pitch (P) and the depth (h), but is 40 to 150.
Choose from a range of degrees. Also in this case, it is difficult to form an effective drainage groove if it is too large or too small. Further, depending on the above-mentioned conditions, the tip of the crest formed by the adjacent circumferential grooves 11 becomes a flat surface, and this causes a suitable rolling force to be applied to the plate 12 so that the liquid pushed by the crest can be formed on both sides of the groove. It will lead to efficient drainage.

As shown in FIG. 2, the draining roll 10
Are arranged so as to face each other, and one liquid-draining roll 10 is provided with a rolling-down means (for example, an air cylinder, a hydraulic cylinder, a jack, etc.) 13, and a wet plate (a thin steel plate) at the center.
Although 12 is passed under pressure, the liquid adhered by the pair of liquid draining rolls 10 is swept downward and returned into the tank 14.

FIG. 3 shows a liquid draining roll 15 according to a second embodiment of the present invention. Left and right circumferential grooves 16 and 17 are spirally formed with reference to the center position C of the liquid draining roll 15. It is slightly inclined. As a result, the discharged liquid can be pushed down and moved laterally, and efficient drainage can be performed. The conditions of the pitch (P), opening angle (θ), and depth (h) of the circumferential groove are the same as those in the above embodiment.

FIG. 4 shows still another embodiment of the present invention. As shown in FIG. 4 (A), liquid cutting rolls 18 and 19 each having a number of circumferential grooves formed on the roll surface are vertically moved. When the plate 20 is horizontally passed through, the plate 21 to be passed is wound around the liquid draining roll 22 on one side and is pressed down by the liquid draining roll 23 on the other side, as shown in FIG. 4B. The present invention is applied even when the

In each of the above embodiments, the liquid draining rolls are used for the rollers on both sides facing each other, but the present invention is also applicable to the case where the liquid draining rolls are used for only one side. And, it is preferable that the structure of the liquid draining roll has a metal cylindrical core in the center and is coated with rubber or elastic plastic in the periphery, but it is preferable to use metal, plastic or ceramics in whole or in part. The present invention is applicable even to a liquid draining roll using.

[0013]

As is apparent from the above description, the liquid draining roll according to the first aspect of the invention has the following effects because the circumferential groove is provided on the roller surface. The drainage performance was improved by increasing the efficiency of draining the liquid generated by draining. By securing the frictional force between the roll and the plate, slip between the roll and the plate can be prevented, and deterioration of the plate surface due to a flaw or the like can be suppressed. The roll can be driven by the frictional force between the roll and the plate, the roll can be driven by the plate, and the equipment can be simplified. It is possible to reduce the rolling force of the roll and prevent scratches when foreign matter is caught under high pressure.

[Brief description of drawings]

FIG. 1 is a plan view showing a usage state of a liquid draining roll according to a first embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a partial plan view of a liquid draining roll according to a second embodiment of the present invention.

FIG. 4 is a side view showing a usage state of a liquid draining roll according to another embodiment.

[Explanation of symbols]

 10 Liquid Cutting Roll 11 Circumferential Groove 12 Plate 13 Rolling Down Means 14 Tank 15 Liquid Cutting Roll 16 Circumferential Groove 17 Circumferential Groove 18 Liquid Cutting Roll 19 Liquid Cutting Roll 20 Plate 21 Plate 22 Liquid Cutting Roll 23 Liquid Cutting Roll

Claims (1)

[Claims] 1. A liquid-draining roll, which is disposed so as to face each other and drains liquid in a wet state in which pressure is applied, wherein a number of circumferential grooves are formed on the roll surface. roll.