JP2812190B2 - Roll cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus provided in a continuous processing line for metal strips and used for removing foreign substances adhering to the outer periphery of a roll. The present invention relates to a roll cleaning device suitable for removing deposits on a sink roll.

[0002]

2. Description of the Related Art Various rolls such as deflector rolls and sink rolls are provided for transporting metal strips in a continuous processing line for metal strips, such as a plating line for plating a surface-treated steel sheet. To such a roll, a foreign substance adhered to the conveyed metal strip and adhered adheres.

[0003] As described above, the foreign substances adhering to the rolls of the continuous processing line include metal powder generated from the metal strip itself, and dust and scale captured by a plating solution adhering to the metal strip.

[0004] When the above-mentioned foreign matter adheres to the roll, a pressing flaw caused by the foreign matter is generated on the surface of the metal strip passing through the roll, and the quality of the metal strip is largely reduced. Further, if the roll is scratched by foreign matter, the scratch is transferred to the surface of the metal strip that passes every rotation of the roll, which causes a large number of defective products.

For this reason, it is necessary to remove foreign matter adhering to the roll as soon as possible. Various foreign matter removing apparatuses have been proposed to satisfy such a demand. For example, there is an apparatus disclosed in JP-A-61-103781. In this apparatus, the surface of the roll is polished by moving the elastic grindstone in the longitudinal direction of the roll.

[0006] There is also an apparatus disclosed in Japanese Utility Model Laid-Open No. 2-69967. This device includes a brush roll provided with a driving device, and a mist spray nozzle for spraying a mist to a brushing portion when the brush surface is being brushed with the brush roll.

[0007]

However, the above-described apparatus for removing foreign matter adhering to the roll of the metal strip continuous processing line has the following problems. That is, the space for arranging the brush portion, the slide mechanism, and the like requires the same space as the space for arranging the drive shaft of the roll. In particular, in the case of a sink roll, since the roll is disposed in the processing tank, there is a problem that the installation space is narrow and the sink roll can hardly be used.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a roll cleaning apparatus which can be installed even in a place where an installation space is narrow, such as a sink roll. The purpose is.

[0009]

According to the present invention, there is provided a roll cleaning apparatus comprising: a rotating shaft vertically supported on a substrate; a hydraulic or pneumatic cylinder supported by the rotating shaft and turning horizontally; It is composed of a high-pressure water injection nozzle fixed to the tip of a piston rod of the hydraulic or pneumatic cylinder, a flexible pressure-resistant hose connected to the high-pressure water injection nozzle, and driving means for rotating the rotating shaft. .

Further, instead of a hydraulic or pneumatic cylinder, an internal piston with a magnet that moves inside the cylinder by hydraulic or pneumatic pressure, and an external piston with a magnet that moves along the outer peripheral surface of the cylinder following the internal piston. The magnet type rodless cylinder is used, and a high-pressure water injection nozzle is fixed to an external piston of the magnet type rodless cylinder.

[0011]

When removing foreign matter adhering to a roll in a continuous processing line of a metal strip by using the roll cleaning device according to the present invention, a roll at the longitudinal center portion of the roll for cleaning the roll cleaning device is used. The high-pressure water injection nozzle fixed to the tip of the piston rod of the hydraulic or pneumatic cylinder is positioned so as to face the roll. Then, a flexible pressure-resistant hose is connected to the external high-pressure water supply pipe, and high-pressure water is injected from the high-pressure water injection nozzle.
A state in which it can be sprayed on the rotating roll surface. After such a state, the hydraulic or pneumatic cylinder is turned, and the piston rod of the hydraulic or pneumatic cylinder is extended and contracted.

In the above-described roll cleaning operation, the pressure when the high-pressure water that is sprayed hits the roll surface is made uniform at each part of the roll. That is, when the hydraulic or pneumatic cylinder is turned clockwise, the piston rod is in the retracted state,
The piston rod is advanced as the hydraulic or pneumatic cylinder pivots. As a result, since the distance between the roll surface and the high-pressure water jet nozzle can be kept at a predetermined interval, high-pressure water can be applied to the roll surface in a state where the collision pressure is high.

When the high-pressure water reaches one end in the longitudinal direction of the roll, the hydraulic or pneumatic cylinder is rotated in the opposite direction, ie, counterclockwise, and the piston rod is retracted to the initial position. Then, when the initial state (retreat limit) is reached, the piston rod starts to advance again, and when the high-pressure water comes into contact with the other end of the roll, the hydraulic or pneumatic cylinder rotates while turning clockwise. When the rod is retracted, it returns to its original state.

The above is a case where the number of the high-pressure water injection nozzles is one. When the number of the high-pressure water injection nozzles is two, that is, when there are two sets of the rotating shaft and the hydraulic or pneumatic cylinder fixed thereto, The right and left halves of the roll in the longitudinal direction may be shared by the respective high-pressure water injection nozzles for cleaning. Also in this case, the cooperative operation between the hydraulic or pneumatic cylinder and the rotary shaft conforms to the above description.

[0015] Further, instead of a hydraulic or pneumatic cylinder, a high pressure water injection nozzle fixed to an external piston of a magnet type rodless cylinder also operates as described above. It can be compact.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A roll cleaning apparatus according to a first embodiment of the present invention comprises:
This will be described with reference to FIG. FIG. 1A is a side view of the roll cleaning device, and FIG. 1B is a plan view thereof. The roll cleaning device includes a rotating shaft 3 vertically supported on a substrate 1 via a bearing 2, a hydraulic or pneumatic cylinder 4 supported by the rotating shaft 3 and turning horizontally, and a hydraulic or pneumatic cylinder 4. A high-pressure water injection nozzle 6 fixed to the tip of a piston rod 5 of the pneumatic cylinder 4;
, A bevel gear 8 fixed to the rotating shaft 3, a bevel gear 9 meshed with the bevel gear 8, and an electric motor 10 for rotating the bevel gear 9.

With the above-described roll cleaning device, the roll 5
When cleaning 1, the hydraulic or pneumatic cylinder 4 with the piston rod 5 retracted is positioned at the longitudinal center of the roll 51, and the high-pressure water injection nozzle 6 provided at the tip of the piston rod 5 is As shown in FIG. 1A, they are arranged so as to be located below the roll 51. Then, the flexible pressure-resistant hose 7 is connected to an external high-pressure water supply device, and high-pressure water is injected from the high-pressure water injection nozzle 6 onto the surface of the rotating roll 51. At the same time, the motor 1
By driving the rotary shaft 3 to rotate the hydraulic or pneumatic cylinder 4 and supplying hydraulic or pneumatic pressure to the hydraulic or pneumatic cylinder 4, the piston rod 5 is advanced.

Since the stroke of the piston rod 5 increases as the turning amount of the hydraulic or pneumatic cylinder 4 increases, the high-pressure water injection nozzle 6 is always located at the same distance from the surface of the roll 51. ,
The surface of the roll 51 is cleaned with a uniform collision pressure.

By the high-pressure water from the high-pressure water injection nozzle 6,
When cleaning of one end of the roll 51 is completed, the electric motor 1
0 is rotated in the opposite direction, and the hydraulic or pneumatic cylinder 4 is turned in the opposite direction.
The hydraulic or pneumatic pressure supplied to the hydraulic or pneumatic cylinder 4 is switched so that the piston rod 5 is retracted. In this case, the surface of the roll 51 is
From the one end to the center in the longitudinal direction.

The piston rod 5 of the hydraulic or pneumatic cylinder 4 operates in the retracting direction until the high-pressure water jet nozzle 6 reaches the center of the roll 51 in the longitudinal direction, and is in the most retracted state when it reaches the center. become. Even if the high-pressure water injection nozzle 6 passes the center of the roll 51 in the longitudinal direction, the rotation direction of the electric motor does not change, but the piston rod 5 changes from the most retracted state to the forward movement.

When the cleaning of the other end of the roll 51 is completed by the high-pressure water from the high-pressure water injection nozzle 6 in this way, the electric motor 10 is again rotated in the opposite direction to the conventional one, and the piston rod 5 is rotated. The hydraulic or pneumatic pressure to be supplied to the hydraulic or pneumatic cylinder 4 is switched so that the pressure is drawn. And a hydraulic or pneumatic cylinder 4
Is turned in the opposite direction as before. This way,
The surface of the roll 51 is cleaned from the other end of the roll 51 toward the center in the longitudinal direction. The cleaning of the roll surface is performed by turning the hydraulic or pneumatic cylinder 4 right and left as many times as described above.

FIG. 2 shows the sink roll 5 in the plating tank 52.
FIG. 2 is an explanatory diagram in the case where 1 is washed by a roll washing apparatus of the type described in FIG. 1. The substrate 1 is supported by the support metal 41, and the upper locking tool 42 of the support metal 41 is hooked on the upper part of the lid mounting portion 54 of the inspection hole 53 of the plating tank 52, and the support metal 41 is rotatable. The lower locking tool 43 is hooked on the lower part of the lid mounting portion 54 of the inspection hole 53 to fix the roll cleaning device. A connection portion 44 for connecting an external high-pressure water supply hose 55 is provided on the support metal 41.
High-pressure water is supplied to the flexible pressure-resistant hose 7 via the connection portion 44.

FIG. 3 shows a second embodiment of the roll cleaning apparatus according to the present invention. The spur gear 12 meshes with a spur gear 11 rotated by an electric motor disposed on a substrate 1. A spur gear 13 is meshed with the gear 12, and two hydraulic or pneumatic cylinders 14 and 15 are fixed to respective rotation shafts rotated by the spur gear 12 and the spur gear 13, and the two hydraulic or pneumatic cylinders 14 and 15 are fixed. 15 are turned in opposite directions to each other. In this way, the high pressure water injection nozzles 18 and 19 fixed to the tips of the respective piston rods 16 and 17
Is only half the length of the roll, and the roll can be cleaned in a short time. Of course, the efficiency can be increased by further increasing the number of hydraulic or pneumatic cylinders.

In order for the high-pressure water jet nozzle to always maintain a desired distance from the roll surface, it is important that the piston rod does not rotate around its axis, and the cross-section of the piston rod is elliptical. It is good to make a section which does not rotate like a square or a square.

Next, a third embodiment of the roll cleaning apparatus of the present invention will be described with reference to FIGS. 4 (a) and 4 (b). FIG. 4A is a side view of the roll cleaning apparatus, and FIG.
(B) is a top view similarly.

The roll cleaning apparatus includes a bearing 2 on a substrate 1.
The rotary shaft 3 is supported vertically by a rotary shaft 3, a magnet rodless cylinder 24 supported by the rotary shaft 3 and pivots in the horizontal direction, and a magnet-equipped external piston 25 of the magnet rodless cylinder 24. The fixed high-pressure water injection nozzles 26a and 26b, the flexible pressure-resistant hoses 27a and 27b connected to the high-pressure water injection nozzles 26a and 26b, the bevel gear 8 fixed to the rotary shaft 3, and meshing with the bevel gear 8 A bevel gear 9 and an electric motor 10 for rotating the bevel gear 9 are provided.

4 (a) and 4 (b), reference numeral 45 denotes a metal support for supporting the substrate 1. Reference numeral 28 denotes the magnet-equipped external piston 25, and the shaft center of the magnet type rodless cylinder 24. This is a guide bar that is prevented from rotating about.

The above-mentioned magnet type rodless cylinder 24 will be described below with reference to FIG. 5A, which is a longitudinal sectional view and FIG. 5B, which is a view taken along the line AA in FIG. 5A. That is, the magnet type rodless cylinder 24 is composed of the cylinder tube 29 and the cylinder tube 2.
9. An internal piston 31 having a magnet 30 moving on the outer surface by air pressure or hydraulic pressure, and an internal piston 31
And an external piston 25 in which a magnet 32 is disposed on an inner peripheral surface that follows and moves along the outer peripheral surface of the cylinder tube 29 by the magnetic force of the magnet 30 disposed on the outer peripheral surface. Then, a high-pressure water injection nozzle is attached to the external piston 25 directly or via a block or the like.

The roll cleaning device of the third embodiment is used in the same manner as the roll cleaning device of the first embodiment, and the number of high pressure water injection nozzles attached to the external piston 25 and the injection direction are also different. What is necessary is just to select suitably and employ | adopt.

As described above, the roll cleaning apparatus according to the embodiment of the present invention is particularly suitable for cleaning a roll having no sufficient space around it, such as a sink roll in a plating tank.
Defects in the metal strip due to sink roll deposits can be significantly reduced.

Since it is necessary to control the stroke of the piston rod of the hydraulic or pneumatic cylinder or the piston of the rodless cylinder in time series, the hydraulic or pneumatic cylinder has an electromagnetic proportional pressure control valve or the like capable of controlling the stroke amount. It's a good idea to use something of the form
If the stroke speed of the piston of the piston rod or the rodless cylinder is appropriately adjusted in advance, a normal hydraulic or pneumatic cylinder can sufficiently achieve the purpose.

[0032]

According to the present invention, the defects of the metal strip due to the adhesion of the roll can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a roll cleaning device according to a first embodiment of the present invention, wherein (a) is a side view and (b) is a plan view.

FIG. 2 is an explanatory diagram of a method of using the roll cleaning device according to the first embodiment of the present invention.

FIG. 3 is an explanatory view of a roll cleaning device according to a second embodiment of the present invention.

FIG. 4 is an explanatory view of a roll cleaning device according to a third embodiment of the present invention, wherein (a) is a side view and (b) is a plan view.

FIGS. 5A and 5B are explanatory views of a magnet type rodless cylinder, wherein FIG. 5A is a longitudinal sectional view, and FIG. 5B is a view taken along the line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Bearing 3 Rotating shaft 4 Hydraulic or pneumatic cylinder 5 Piston rod 6 High pressure water injection nozzle 7 Flexible pressure-resistant hose 8 Bevel gear 9 Bevel gear 10 Electric motor 11 Spur gear 12 Spur gear 13 Spur gear 14 Hydraulic or pneumatic cylinder 15 Hydraulic or pneumatic Cylinder 16 Piston rod 17 Piston rod 18 High pressure water injection nozzle 19 High pressure water injection nozzle 24 Magnet type rodless cylinder 25 External piston 26a High pressure water injection nozzle 26b High pressure water injection nozzle 27a Flexible pressure resistant hose 27b Flexible pressure resistant hose 28 Guide bar 29 Cylinder tube 30 Magnet 31 Internal piston 32 Magnet

Continuation of the front page (56) References JP-A-63-250492 (JP, A) JP-A-5-9787 (JP, A) JP-A-4-78272 (JP, U) JP-A-2-33264 (JP , U) Fully open 1986-151856 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) C25D 7/00-7/12 C23G 3/00

Claims (2)

(57) [Claims] 1. A rotary shaft vertically supported on a substrate, a hydraulic or pneumatic cylinder supported by the rotary shaft and pivoting in a horizontal direction, and fixed to a tip of a piston rod of the hydraulic or pneumatic cylinder. A high-pressure water injection nozzle, a flexible pressure-resistant hose connected to the high-pressure water injection nozzle, and driving means for rotating the rotating shaft. 2. In place of a hydraulic or pneumatic cylinder, an internal piston with a magnet that moves inside the cylinder by hydraulic or pneumatic pressure, and an external piston with a magnet that moves along the outer peripheral surface of the cylinder following the internal piston. 2. The roll cleaning apparatus according to claim 1, wherein a high pressure water injection nozzle is fixed to an external piston of the magnet type rodless cylinder.