JP2008043858A - Deposit removing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deposit removing device which controls high-frequency vibration of the nozzle body produced by compressed gas blown from a nozzle body supported in a floating state to a metal member composed of e.g. a metal plate and thereby damps down the movement of the nozzle body smoothly so as to remove, without unevenness, oil attached to the plate member. <P>SOLUTION: A nozzle body is supported on the surface of a running magnetic plate-formed metal member in such a way as to move freely in a nearly vertical direction and floated from the metal plate-formed metal member through a negative adsorption pressure produced by a flow of air sprayed from a spraying spout and flowing through the clearance of the magnetic plate-formed metal member. A magnet whose magnetic flux intersects that of the magnetic plate-formed metal member is arranged on one or both sides of the magnetic plate-formed metal member on the nozzle body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, an oil component such as rolling oil adhering to a paramagnetic plate-like member (hereinafter referred to as a plate-like member) such as a rolled plate of copper, aluminum, an alloy thereof, or a semiconductor is provided to the plate-like member. The present invention relates to a deposit removing device that removes deposits such as liquid such as cleaning liquid by spraying compressed air from a nozzle body provided opposite to the nozzle body, and in particular, suppressing vibration of the nozzle body caused by the blowing of the compressed air, The present invention relates to a deposit removing device that has succeeded in increasing the efficiency of deposit removing.

In general, when rolling a plate-like member such as a metal plate or a resin plate by a rolling mill, for cooling the work roll (rolling roll) or the plate-like member rolled by this work roll, or improving the rolling efficiency, etc. The rolling oil is supplied to the rolling contact portion between the work roll and the plate member. Further, when it is necessary to clean the surface of the plate-like member, the oxide film, or the like, the plate-like member is passed through a cleaning tank containing a cleaning agent.
Thus, since the rolling oil and cleaning agent adhere to the rolled plate-like member, it is necessary to remove the rolling oil and cleaning agent before winding the plate-like member with a winding device or the like. This is because when the plate member is wound with the rolling oil or the like attached, the friction coefficient of the contact surface between the wound plate members is reduced, and the plate member is slid in the width direction and wound. This is because there is a possibility that problems such as collision with the take-off device or breakage of the plate-like member itself may occur. Further, if the plate member (rolled coil) wound with insufficient removal of rolling oil is annealed in the next step, there is a problem that unevenness of annealing occurs and the quality of the product is lowered. Furthermore, if the plate-like member is stored with the cleaning agent attached, the plate-like member may be corroded by the cleaning agent.

  Conventionally, many methods for removing the rolling oil and the cleaning agent have been proposed. For example, Patent Document 1 includes a nozzle body in which one or more injection ports are formed on an opposing surface facing the surface of a rolled plate-like member that travels, and a compressed gas is injected from the injection port of the nozzle body. An apparatus for removing deposits such as rolling oil and cleaning oil adhered to the plate-shaped member by allowing the nozzle body to move in a direction substantially perpendicular to the surface of the plate-shaped member. The nozzle body is supported on the nozzle member by using an adsorption pressure that is a negative pressure generated based on the flow of air injected from the injection port and flowing through the gap between the plate members. There has been proposed an apparatus for removing deposits that is lifted up and supported.

As a result, even if the plate-like member swells or vibrates, the distance between the nozzle body and the plate-like member is kept strictly constant, and the spraying force of the compressed gas is kept constant. A deposit removal device that does not occur is provided.
Further, the weight of the nozzle body and the spring can be used without using the suction pressure, which is a negative pressure generated based on the air flow injected from the injection port and flowing through the gap between the plate-like members. The nozzle body floats with respect to the plate-like member by a balance between the pressing force in the direction of the plate-like member, such as force, and the pushing-up pressure that pushes up the nozzle body by the injection pressure of the compressed air injected from the injection port. There has also been proposed an apparatus for removing deposits that is supported by the above (Patent Document 2).

  In this case, in the point that the adsorption pressure is not used, the function of controlling the interval between the nozzle body and the plate-like member to be strictly constant like the deposit removing device disclosed in Patent Document 1 is lacking. Since the nozzle body is supported in a floating manner with respect to the plate-like member, the distance between the nozzle body and the plate-like member can be kept constant to some extent, so that the blowing force of the compressed gas is kept constant to some extent, This is an excellent method in that removal spots are less likely to occur.

  However, in any of the deposit removing devices disclosed in Patent Documents 1 and 2, since the compressed air ejected from the above-described ejection port is used, if the spraying force of the compressed air varies, Variations occur in the interval between the nozzle body and the plate-like member. In this respect, the state of the compressed air spray is not always constant, and in many cases is accompanied by high-frequency fluctuations, so vibration of the plate-like member cannot be avoided.

On the other hand, as a technique for suppressing the vibration of the plate-like member, for example, Patent Document 3 exists. In this technology, magnets are arranged on both sides of a traveling plate member, and the plate member is attracted in the opposite direction by the magnetic force of the upper and lower magnets, and the position of the plate member is detected. Then, the magnetic force is changed so as to cancel the position change according to the position change, and the plate member is always urged to a position where the magnetic forces of the upper and lower magnets are balanced.
This technique is excellent in that the position of the plate-like member is controlled to be constant.
JP 2006-68724 A Japanese Patent Application Laid-Open No. 5-200374 JP-A-5-245521

  However, the above-mentioned patent document 3 arranges electromagnets on both sides of the plate-like member, detects the position of the plate-like member passing between them, and controls the magnetic force of the electromagnet according to the position, thereby This control is performed so that the travel position of the shaped member is constant, which raises many problems such as the complexity and size of the apparatus, and complicated control. In addition, since the attraction force by the electromagnet is controlled according to the position of the plate-like member, copper, aluminum, or an alloy thereof, which does not generate the attraction force, or a paramagnetic material such as a semiconductor containing them is used. It cannot be applied to plate-like members.

  Accordingly, the present invention has been made in view of the above circumstances, and its object is to provide a plate-like shape generated by a compressed gas blown from a nozzle body supported in a floating manner on the plate-like member as described above. An object of the present invention is to provide a deposit removing device that can uniformly remove oil adhering to a plate-like member by suppressing high-frequency vibrations of the member and smoothly damping the movement of the plate-like member.

In order to achieve the above object, the present invention provides:
One or more injection ports are formed on a surface facing the surface of the traveling plate-shaped member, and the nozzle body is supported so as to be movable in a direction substantially perpendicular to the surface of the plate-shaped member. In the deposit removing apparatus for removing deposits such as rolling oil and cleaning oil adhering to the plate-like member by injecting compressed gas from the injection port,
The nozzle body is configured as a deposit removing device in which a magnet whose magnetic flux intersects the plate-like member is provided.
As described above, when the nozzle body is provided with a magnet whose magnetic flux intersects the paramagnetic plate member, the plate member vibrates and the distance from the plate member changes. An eddy current is generated in the plate member, and the plate member generates heat. This consumed energy becomes energy that hinders the movement of the plate-like member, and suppresses high-frequency vibrations of the plate-like member while exhibiting the deposit removal effect. Further, when noise is generated due to the high frequency vibration of the plate-like member, the present invention exhibits the noise suppressing effect at the same time as the high frequency vibration is suppressed.
In the present invention, the plate-like member means a paramagnetic plate-like member such as a rolled plate of copper, aluminum, an alloy thereof, or a semiconductor.

Since it is based on the vibration suppression theory as described above, a higher magnetic line density intersecting with the plate-like member is more effective for vibration suppression. Therefore, it is desirable to increase the magnetic line density acting by providing the magnet on one side of the plate-like member and further providing it on both sides of the plate-like member.
When magnets are provided on both sides of the plate-like member, it is desirable that the magnetic poles on the opposing surfaces of the two magnets are different, that is, change alternately. With this arrangement, adjacent magnet pairs become a coupling, and the magnetic line density increases.

As for the arrangement of the magnet, it is possible to cross the plate-like member with many lines of magnetic force in a small area because it is arranged horizontally in a direction perpendicular to the traveling direction of the plate-like member, and it is efficient. It is.
In addition, since a magnetic field density is reduced at the center of a large horizontally long magnet, it is desirable to divide the magnet into a plurality in a direction perpendicular to the traveling direction of the plate member.

  As the support structure of the nozzle body, the nozzle body is supported so as to be movable in a direction substantially perpendicular to the surface of the plate-like member, and the gap between the plate-like members is ejected from the injection port. It is possible to employ one in which the nozzle body is lifted and supported from the plate-like member by using an adsorption pressure that is a negative pressure generated based on the flow of air flowing therethrough. By supporting the nozzle body in a floating manner using an adsorption pressure, which is a negative pressure generated based on the flow of air injected from the injection port and flowing through the gap between the plate-like members as described above, The heat of the gap between the nozzle body and the plate-like member is automatically kept constant. Accordingly, since the deposit removing device with as little vibration as possible is originally provided, it is possible to provide the deposit removing device with very little vibration by providing the vibration suppressing device according to the present invention.

A depression chamber is formed adjacent to the nozzle body and recessed in a direction away from the plate body on the opposite surface of the nozzle body and on the upstream and / or downstream portion in the traveling direction of the plate member. Things are desirable.
Due to the presence of the depression chamber, the mist containing the oil blown up by the compressed fluid ejected from the nozzle body flows into the depression chamber and is removed, so that the density of the mist increases and the plate member is contaminated. Inconvenience is avoided.

Further, a plurality of the depression chambers may be formed in the traveling direction of the plate member. Because there are many depression chambers, the action of removing deposits is increased or stabilized.
The wall surface on the downstream side in the plate member traveling direction of the depression chamber is formed so as to be inclined toward the downstream side in the plate member traveling direction toward the plate member end portion side, so that the mist entering the depression chamber is formed. The flow is improved, and the action of removing deposits is increased.
In addition, if the exhaust means connected to the intake source is connected to the one or more depression chambers, the mistake of the deposits flowing into the depression chamber is discharged without accumulating in the depression chamber. Deposits can be efficiently removed without cleaning for a long time.

In addition, the injection ports formed on the opposing surface of the nozzle body may be arranged in series or in parallel in a direction substantially orthogonal to the conveying direction of the plate member and the moving direction of the nozzle body, for example. .
Further, if a flat nozzle having a long opening in a direction substantially orthogonal to the conveying direction of the plate member and the moving direction of the nozzle body is provided on the opposing surface of the nozzle body, the width of the plate member It becomes possible to radiate compressed gas uniformly in the whole direction.
Further, the nozzle body is provided on one or both of the upper surface side and the lower surface side of the plate-like member so as to be able to remove deposits on both the upper surface side and the lower surface side of the plate-like member. It is preferable to be made.

By the way, when compressed gas is injected to the plate-like member, the gas is reflected by the plate-like member and collides with the facing surface. At this time, the deposit peeled off by the injection of the compressed gas may collide with the facing surface and adhere to the facing surface. In particular, when the deposit is viscous, such as oil or dust containing oil, the deposit is likely to adhere to the facing surface. In this case, there may be a problem that the deposit is stuck on the facing surface, or the injection port is clogged or the enlarged deposit is peeled off and reattached to the plate member.
Therefore, a concavity-like gas reservoir for storing the compressed gas injected from the injection port is provided on the facing surface, and a communication hole for introducing the gas in the gas reservoir to the outside of the nozzle body is provided in the nozzle body. If formed, air containing deposits such as oil stays in the gas reservoir, and the staying air can be discharged to the outside. Thereby, clogging of the injection port and reattachment of the deposit on the plate-like member can be reduced.
In this case, if a suction means for sucking the gas in the gas reservoir is provided from the communication hole, the gas containing the deposits can be discharged efficiently.

  The distance between the plate member and the nozzle body at which the lines of magnetic force intersect by disposing a magnet that generates a magnetic force line across the plate member facing the nozzle body on the nozzle body supported in a floating manner as described above. When the current fluctuates (that is, vibrates), an eddy current is generated in the plate member, which consumes energy, so that high frequency vibrations of the plate member are suppressed.

Hereinafter, embodiments and examples of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. It should be noted that the following embodiments and examples are examples embodying the present invention, and do not limit the technical scope of the present invention.
The method for supporting the nozzle body for removing deposits in the present invention is based on the premise that the nozzle body is basically supported in a floating manner with respect to the plate member on which the nozzle body travels. As described in Patent Document 1, a nozzle body in which one or more injection ports are formed on a facing surface facing the surface of a rolled rolled plate-like member is provided, and compressed gas is supplied from the injection port of the nozzle body. A deposit removing device that removes deposits such as rolling oil and cleaning oil adhering to the plate member by spraying the nozzle member, wherein the nozzle body moves in a direction substantially perpendicular to the surface of the plate member. The nozzle body is attached to the plate by using an adsorption pressure that is a negative pressure generated based on the flow of air that is freely supported and is injected through the gap between the plate-like members. It floats and supports from the shaped member Or, as described in Patent Document 2, the negative pressure generated based on the air flow injected from the injection port and flowing through the gap between the plate-like members as described above. Without using a certain adsorbing pressure, the pressing force in the direction of the plate member, such as its own weight and spring force, and the pushing pressure that tries to push up the nozzle body by the injection pressure of the compressed air injected from the injection port. The nozzle body may be supported in a floating manner with respect to the plate-like member by the balance.
In the following embodiment, a case where the nozzle body is supported by the floating support method described in Patent Document 1 will be described. However, this is an example, and the present invention can be adopted by any support method.

  FIG. 1 is a block diagram for explaining the outline of the air control system of the deposit removing apparatus X according to the embodiment of the present invention. FIG. 2 is a schematic diagram for explaining the nozzle body 100 of the deposit removing apparatus X. FIG. 3 is a diagram illustrating the relationship between the force F that pushes the nozzle body 100 upward and the separation distance d, FIG. 4 is a schematic diagram illustrating the relationship between the separation distance d and the deposit removal effect, and FIG. FIG. 6 is a diagram showing the pressure distribution in the vicinity of the mouth 101, FIG. 6 is a schematic diagram for explaining the nozzle body 100a of the deposit removing apparatus X1 according to the first embodiment of the present invention, and FIG. 7 is a second embodiment of the present invention. FIG. 8 is a schematic diagram for explaining the nozzle body 100b of the deposit removing apparatus X2 according to the present invention, FIG. 8 is a block diagram showing a schematic configuration of the deposit removing apparatus X3 according to the third embodiment of the present invention, and FIG. 4 illustrates the nozzle body 100c of the deposit removing device X4 according to the fourth embodiment. FIG. 10 is a block diagram showing a schematic configuration of the deposit removing apparatus X5 according to the fifth embodiment of the present invention, and FIG. 11 is a diagram showing the arrangement of magnets used in the embodiment of the present invention (( a) is a side view when magnets are attached to the nozzle bodies arranged on both sides of the plate-like member, and (b) is a nozzle showing a state in which magnets are provided on both sides of the upstream and downstream portions of the nozzle body. (C) is a side view showing the positional relationship between the magnetic force lines of the magnets provided on both sides of the plate-like member and the plate-like member), and FIG. 12 is a concept of the magnetic force lines of the magnet shown in FIG. (A) is a front view showing a magnetic force line generating body in one horizontally long magnet, and (b) is a front view of the nozzle body showing a state of magnetic lines when the horizontally long magnet is divided into a plurality of pieces. Fig. 13 is a graph showing the relationship between the number of magnets and the vibration suppression effect (vibration damping rate). 4 is a detailed view of the magnet shown in FIG. 11 ((a) is a side cross-sectional view of a state where a magnet is attached only to one side of the nozzle body, and (b) is a nozzle body showing details of the magnet of (a). (C) is a side sectional view showing details when the magnet is an electromagnet), and FIG. 15 is a diagram showing the principle of vibration suppression in the present invention.

First, the air control system and schematic configuration of the deposit removal apparatus X according to the embodiment of the present invention will be described with reference to the block diagram of FIG.
This deposit removal apparatus X is an apparatus for removing deposits such as liquids such as rolling oil and cleaning agents and scraps adhered to a plate-like member rolled by a rolling mill or the like, as shown in FIG. As described above, compressed air (an example of compressed gas) supplied from the air pressure source 5 is sprayed onto the surface of the plate member T to remove rolling oil, cleaning oil, and the like adhering to the surface of the plate member T. Therefore, a nozzle body 100 having one or more injection ports on the surface opposed to the plate-like member, and an electromagnetic valve 2 interposed in a pipe 6 connecting the nozzle body 100 and the air pressure source 5 by piping; The pressure reducing valve 3 interposed in the pipe line 6 on the downstream side of the electromagnetic valve 2, the air filter 4 interposed on the downstream side of the pressure reducing valve 3, and the compressed air by exciting / demagnetizing the electromagnetic valve 2. And a controller 1 that performs control to switch the path (air path). In this embodiment, an example in which compressed air is used as the compressed gas will be described, but nitrogen gas or the like having low corrosiveness may be used. Moreover, this deposit removal apparatus X is not restricted to the plate-shaped member rolled by the said rolling mill, It can be applied also to all plate-shaped members.

  The controller 1 includes a control unit such as a sequencer. For example, when detecting that a start signal is input from the outside, the controller 1 excites the solenoid valve 2 to open the valve from the closed position to the open position. Switch to. The compressed air supplied through the electromagnetic valve 2 is reduced to a predetermined pressure by the pressure reducing valve 3 and is supplied to the nozzle body 100 after water vapor and dust are removed by the air filter 4 with drain. Is done.

Next, the nozzle body 100 will be described with reference to the schematic diagram of FIG. The nozzle body 100 is disposed on the upper surface side of the plate member T as shown in FIG. The nozzle body 100 is formed of a lightweight member such as a plastic material and has a substantially rectangular shape that is long in the width direction of the plate member T. 2A is a schematic cross-sectional view showing a vertical cross section in the longitudinal direction (left-right direction in FIG. 2) of the nozzle body 100, and FIG. 2B is the nozzle body 100 as viewed from the arrow A in FIG. FIG. The arrow which does not attach | subject the code | symbol in a figure shows the flow of compressed air.
Four injection ports 101 are formed on the facing surface 102 of the nozzle body 100 facing the upper surface (upper surface) T1 of the plate member T. The four injection ports 101 have a direction W3 (see FIG. 2) that is substantially orthogonal to the conveying direction W2 (see FIG. 2B) of the plate member T and the moving direction W1 of the nozzle body 100 (see FIG. 2A). 2 (b)) are arranged in series or in parallel. The number of the injection ports 101 is not limited to four, and it is sufficient that at least one or more injection ports 101 are formed.

In order to guide the compressed air ejected from the ejection port 101 to the upstream side in the transport direction W2 of the plate-like member T on the facing surface 102 and blow off the peeled deposits upstream in the transport direction W2. A plurality of grooves 106 (five grooves in the present embodiment) parallel to the conveying direction W2 of the plate member T are formed at predetermined intervals. One end 106a on the upstream side in the conveying direction W2 of the plate-like member T of the groove 106 is formed in a divergent shape and is open to the side surface on the conveying direction W2 side.
In addition, in the groove 106 formed in parallel with the transport direction W2, there is a possibility that the peeled adhered matter will adhere to the plate-like member T again. Therefore, unlike the groove 106, as shown in FIG. 2 (c), the groove 106-1 inclined at the outer side in the width direction of the plate member T with respect to the transport direction W2 is formed on the opposing surface. It is preferable to form in 102. If such a groove 106-1 is formed, the adhered matter peeled off with the compressed air flowing through the groove 106-1 is blown off to the outside in the width direction of the plate-like member T. Can be improved.

  Compressed air supplied from the air pressure source 5 (FIG. 1) and decompressed to a predetermined pressure by the pressure reducing valve 4 is supplied to the nozzle body 100 on a surface 103 opposite to the facing surface 102 of the nozzle body 100. One supply port 104 for the purpose is formed. This supply port 104 is penetrated by the communication path 105 which connects each said injection port 101 inside. Accordingly, when compressed air is supplied to the supply port 104, the compressed air is injected from the respective injection ports 101 to the upper surface T <b> 1 of the plate-like member T through the communication path 105.

  Further, a slide bar 111 is erected on the surface 103 of the nozzle body 100, and a slide guide 112 for supporting the slide bar 111 so as to be slidable in the vertical direction is appropriately provided above the slide bar 111. . The slide bar 111 and the slide guide 112 (hereinafter collectively referred to as a slide mechanism 110) are means for supporting the nozzle body 100 movably in a direction W1 substantially perpendicular to the upper surface T1 of the plate member T. It is an example. Of course, not limited to the slide mechanism 110, for example, a mechanism (see FIG. 8) that supports the nozzle body 100 while being suspended from above by an elastic member such as a helical spring with one end fixed, or the nozzle body. The nozzle body 100 is elastically supported so as to be movable in the substantially vertical direction W1 using a mechanism that supports the nozzle body 100 with an elastic member such as a leaf spring spanned from the side in the longitudinal direction of the 100. There may be.

Further, a concavity that is located in the facing surface 102 of the nozzle body 100 and is upstream of the plate-like member T in the traveling direction W2 is located adjacent to the nozzle body 100 and away from the plate-like body T. A chamber 200 is formed. As shown in FIG. 7B, which shows the depression chamber 200 in a sectional side view, the depression chamber 200 includes a rear wall 200a attached to the upstream side surface in the plate member traveling direction of the nozzle body 100, and the rear wall. It is constituted by a space opened downwardly surrounded by a front wall 200b facing in parallel with 200a and left and right side walls 200c.
The left and right side walls 200c are partly (or entirely) cut away so that an exhaust chamber 202 and a depressed chamber 200, which will be described later, communicate with each other.
The depression chamber 200 is a space into which mist such as the rolling oil and cleaning oil blown up from the surface of the plate member by the compressed gas jetted from the nozzle body 100 can flow, and flows into these depression chambers 200. A part of the mist adhered to the wall surface of the depression chamber 200 is removed from the compressed fluid.
The remainder is exhausted as described later.
Of course, the wall material of the depression chamber 200 may be the same as that of the nozzle body 100, or the inner surface thereof is coated with a release material such as Teflon (registered trademark) to prevent the mist from contaminating the wall surface. It is desirable to perform processing.

Further, at the upstream and downstream ends of the nozzle member 100 in the travel direction of the plate member, as shown in FIGS. 2, 6 and 7, magnet holders 302 each incorporating a permanent magnet 300 are respectively provided. It is attached one by one. The magnet is attached in the direction in which the magnetic flux of each magnet intersects the plate member as shown in the figure. Accordingly, the plate-like member T cuts the magnetic lines of force of the magnet, and an eddy current is generated in the plate-like member T when the distance between the plate-like member T and the nozzle body 100 varies due to vibration. This acts as a resistance, and the high frequency vibration of the plate-like member due to the compressed air ejection of the magnet 300 and the nozzle body 100 integrated therewith is damped.
The above eddy current increases as the magnetic flux density increases. Therefore, a device for increasing the number of magnetic fluxes traversing the plate-like member T by providing an appropriate yoke is required.

In the embodiment shown in FIG. 14, the magnet 300 is provided only on one side of the plate-like member T. However, in order to increase the number of magnetic fluxes, as shown in FIGS. It is desirable to arrange the magnets 300 on both sides of the shaped member T. In this case, as shown in FIG. 11 (a), nozzle bodies 100 may be provided on both sides of the plate-like member T, and magnets may be positioned on the nozzle bodies 100, respectively. It is possible to simply place magnets without providing When magnets are provided on both sides of the plate-like member as described above, it is desirable to increase the magnetic line density by arranging them so that the magnetic poles on the opposing surfaces of both magnets are different.
In this embodiment, the magnet 300 is disposed horizontally in a direction perpendicular to the traveling direction of the plate member T. By arranging in this direction, there is an advantage that the length of the nozzle body 100 can be shortened. Further, if the magnet 300 is disposed in the longitudinal direction of the plate member T, vibration around the longitudinal axis of the plate member T is likely to occur. It is desirable.

  However, as shown in FIG. 12A, the long magnet 300 has a reduced magnetic flux density at the center thereof, and a vibration suppression effect is reduced. Therefore, in order to avoid lengthening the magnet, the magnet may be divided into a plurality of parts in a direction perpendicular to the traveling direction of the magnetic plate-like member as shown in FIG. desirable. By dividing in this way, the magnet can be easily manufactured. In this case, as shown in (b), by alternately changing the polarities of adjacent magnets, the magnetic flux density increases, and strong damping is expected. Further, connecting the magnet end opposite to the plate-like member T with a U-shaped yoke 306 so as not to diverge the magnetic flux into the space has the effect of eliminating magnetic flux leakage and increasing the magnetic flux density.

The magnet is preferably provided in the upstream portion and the downstream portion of the nozzle body 100 in the direction of travel of the plate-like member of the injection port 101, but of course, it can be provided only on one side as shown in FIG. is there. In addition, it is desirable to arrange the nozzles 100 as close as possible to the slide bar 111 that serves as a guide for vertical movement so as not to apply a biased rotational force.
In this embodiment, a permanent magnet is employed as the magnet 300. However, this is intended to be used in an ignitable atmosphere, and if used in an environment that does not ignite, FIG. 14 (c). The electromagnet 300a can be employed as shown in FIG. 5 or if the electromagnet is used in an ignitable atmosphere, it is desirable to consider explosion resistance.

Here, the operation of the nozzle body 100 when compressed air is supplied to the nozzle body 100 configured as described above will be described. When compressed air is supplied from the supply port 104, the supplied compressed air is injected from each injection port 101 through the communication path 105 (see FIG. 2A). The compressed air injected from the injection port 101 is released at a stretch and is blown substantially radially toward the upper surface T1 of the plate member T (see FIG. 2B).
The compressed air blown to the plate-like member T is blown onto the upper surface T1 of the plate-like member T, and then the force for separating the nozzle body 100 from the plate-like member T, that is, the above-mentioned The nozzle body 100 acts on the nozzle body 100 as an upward force that pushes the nozzle body 100 upward in the movement direction W1.
Thus, the nozzle body 100 floats from the plate-like member T when the push-up force acts on the nozzle body 100. When the nozzle body 100 is lifted by the lifting force, a gap d is generated between the opposing surface 102 of the nozzle body 100 and the plate member T. In the gap d, an air pressure layer is formed by the air pressure injected from the nozzle body 100, and the nozzle body 100 floats at a position separated from the plate member T by a distance d. Incidentally, in this embodiment, the nozzle member 100 is floated by a distance d ₀ from the top surface T1 of the plate-like member T, the compression pressure of the compressed air as the nozzle body 100 is suspended at that position adjustment Has been.

  The nozzle body 100 is floated by the jetting pressure of the compressed air thus blown, and liquid such as rolling oil and cleaning agent adhering to the upper surface T1 of the plate-like member T, debris, dirt, etc. The deposits are peeled off. Further, since the jetted compressed air flows along the groove 106 to the upstream side in the conveying direction W2 of the plate-like member T, the separated and misted adhering matter rides on this flow and flows into the nozzle body 100. Through the gap between the plate-like member T and the upper surface T1 of the plate member T.

  When the oil on the plate member T such as a rolled plate is removed with the compressed gas from the injection port 101 as described above, the compressed air is sprayed perpendicularly or obliquely to the plate member T, and the plate member T Blow off any oil that adheres to the surface. At that time, the plate-like member vibrates due to the pressure fluctuation of the compressed air, which causes noise or breakage of the plate. Further, in the case of the air floating wiper type in which the nozzle body 100 is supported in a floating manner as in this embodiment, vibration occurs because the distance between the plate-like member T and the nozzle body 100 is as narrow as about 0.1 mm. And the space | interval of the plate-shaped member T and the nozzle body 100 changes, and oil shortage worsens. Therefore, it is necessary to suppress the vibration of the plate member. For this purpose, the nozzle body 100 is provided with a magnet 300 in which the magnetic flux intersects the plate member T.

In this case, as shown in FIG. 15 for explaining the vibration suppression principle, the plate member vibrates with respect to the plate member T in the direction in which the distance between the magnet 300 and the plate member T changes. Based on the variation in distance, the magnetic flux density penetrating the plate member T such as a rolled plate changes, and an eddy current flows through the plate member T. Since the plate member T has electrical resistance, the eddy current is converted into thermal energy and consumed. This consumed energy is energy that prevents vibration of the plate-like member. That is, damping acts on the plate-like member T, and high-frequency vibration of the plate-like member is suppressed.
As described above, the higher the magnetic flux density, the greater the vibration suppression effect. Therefore, it is desirable to arrange the magnets so as to increase the magnetic flux density. Therefore, the permanent magnet is divided into a plurality of pieces, and the plurality of magnets are arranged side by side as described above. Moreover, it is desirable to arrange so that the magnet surface that opposes the rolled plate is alternated with NSNS. If the poles of the magnet 300 opposed to the plate member T are the same, the magnetic flux density becomes smaller in the middle as shown in FIG. 12A, and the vibration suppressing effect is small.
If it arrange | positions so that the pole of a magnet may alternate with NSNS like FIG.12 (b), a magnetic force line will generate | occur | produce between adjacent magnets and the magnetic flux density which passes a board will become large.

FIG. 13 is a graph in which the relationship between the number of magnets and the vibration suppression effect is obtained by experiments. Thus, it can be seen that when the gap is constant (0.3 mm), the vibration suppression effect is greater when the gaps are arranged alternately. In addition, the smaller the gap between the magnet and the plate, the greater the vibration suppression effect.
As described above, the smaller the distance between the magnet 300 (that is, the nozzle body 100) and the plate member T, the greater the vibration suppressing effect. In the 100 air-floating nozzle body, the distance between the plate-like member T and the wiper is 0.1 mm. Therefore, when a magnet is attached to the air floating nozzle body 100, the vibration suppressing effect is increased, which is effective in preventing the deposits from being removed.

  Mist such as the rolling oil and cleaning oil blown to the upstream side in the conveying direction W2 through the gap with the upper surface T1 of the plate-like member T is the depression chamber formed on the upstream side in the plate-like body running direction. 200. The mist that has flowed into the depression chamber 200 flows into the exhaust chamber 202 based on the negative pressure acting on the exhaust chamber 202 connected to the left and right ends of the depression chamber 200 and is connected to the exhaust chamber 202. It is sucked and removed by the pressure source. The exhaust chamber 202 connected to the negative pressure source is an example of exhaust means connected to the intake source in the present invention.

As described above, the mist is sucked into and removed from the depression chamber 200 provided on the upstream side in the plate body traveling direction of the nozzle body 100. The density is not increased, and therefore, there is no problem that the rolling oil remains on the surface of the plate member.
As described above, mist such as rolling oil is removed by suction into the depression chamber 200. However, if the depression chamber 200 is only one row (stage), the mist chamber 200 cannot be removed in the depression chamber 200 as described above. Part of the mist will flow further upstream.
In order to capture such mist flowing further upstream, a plurality of depression chambers 200 are formed in the traveling direction of the plate member T as shown in FIG. It is desirable to capture the mist overflowing further upstream from the depression chamber 200 in the depression chamber 200 further upstream. By such a multi-stage depression chamber 200, the amount of mist overflowing from the depression chamber is reduced, and the mist capture rate is improved.

The number of depression chambers 200 as described above is more advantageous in terms of removal efficiency with mist, such as three or four stages. However, if the number of depression chambers 200 exceeds a certain number of stages, the efficiency converges to a certain level. That's not to say.
When a plurality of depression chambers are provided as described above, air including mist that has flowed in is provided on the side of the plate-like member on the downstream wall portion (rear wall 200a) in the plate-like member traveling direction of the depression chamber 200 on the upstream side. Further, it is desirable to form an inclined surface 204a that flows in the direction of the exhaust chamber as shown in FIG. The inclined surface 204 shown in FIG. 2 (c) is symmetrically inclined left and right with respect to the center of the depressed chamber. This is because the exhaust chambers 202 are provided on the left and right, respectively, and when the exhaust chamber 202 is provided only on one side of the depressed chamber 200 as shown in FIG. It is desirable to provide an inclined surface 204b that is inclined so as to recede toward the side where 202 is provided.

  As described above, the wall surface on the downstream side of the depression chamber (the rear wall 200a) is retracted toward the depression chamber end portion (side wall 200c) on the side where the exhaust chamber 202 is located, that is, the plate member traveling direction of the depression chamber The mist accumulated in the depression chamber 200 is caused to flow along the inclined wall surface 204 by forming the downstream wall surface to be inclined toward the downstream side in the plate member traveling direction as it goes toward the end of the plate member. , By guiding to the exhaust chamber 202, the mist removal efficiency is improved.

Here, the relationship between the force F acting on the nozzle body 100 (vertical axis, hereinafter referred to as acting force F) and the separation distance d (horizontal axis) between the nozzle body 100 and the upper surface T1 of the plate member T. Will be described with reference to FIGS. 3 is a diagram showing the relationship between the acting force F and the separation distance d. FIG. 5 is a diagram showing the pressure distribution in the vicinity of the injection port 101. FIG. Pressure distribution when the distance is d ₀ , (b) is the pressure distribution when the separation distance d is the distance d ₁ (> d ₀ ), and (c) is when the separation distance d is the distance d ₂ (<d ₀ ). The pressure distribution is shown. Here, the acting force F includes a push-up force that pushes up the nozzle body 100 upward in the moving direction W1 by the injection pressure of compressed air, and the nozzle body 100 as the plate-like member as described later. It is assumed that the attraction force to be attracted to T is included and the gravity of the nozzle body 100 is ignored.

As can be understood from the graph shown in FIG. 3, when the distance d is the distance d ₀ , the acting force F is zero. At this time, as shown in FIG. 5A, the integral value (ie, the pushing force) of the push-up pressure P ₁ for pushing up the nozzle body 100 by the injection pressure of compressed air and the nozzle body 100 are By maintaining a well-balanced relationship with the integrated value (ie, adsorption force) of the adsorption pressure P ₂ to be adsorbed on the plate-like member T, the nozzle body 100 is positioned at the position separated by the distance d _0. It is in a floating state. The adsorption pressure P ₂ is a negative pressure generated when compressed air flows out from the gap between the nozzle body 100 and the plate member T, and the negative pressure generates the adsorption force.

Here, the upper surface T1 of the plate member T is moved downward due to vibration or the like that occurs during rolling or conveyance of the plate member T, and the distance d ₁ (> d) is greater than the distance d _{0. 0} ), the resistance to block the flow of compressed air in the space of the separation distance d is reduced, the compressed air is easily escaped, and the flow velocity of the flowing air increases. Therefore, larger is the adsorption pressure P ₂ as shown in FIG. 5 (b) better than the above pushing force the suction force, the nozzle body 100 is moved downward by the suction force, the distance d is the distance d _The distance is reduced from ₁ to the distance d ₀ . Therefore, even when the top surface T1 of the plate-like member T moves downward, the nozzle body 100 immediately restored to the equilibrium state, it would float above the distance d ₀ away.
On the other hand, when the distance d becomes a distance d ₀ is smaller than the distance d ₂ (<d _0), in contrast to the above, when you to obstruct the flow of compressed air in the space of the distance d resistor Becomes larger, the compressed air becomes difficult to escape, and the flow velocity of the flowing air decreases. Therefore, since the push-up force is superior to the suction force becomes smaller the suction pressure P ₂ as shown in FIG. 5 (c), the nozzle body 100 is moved upward by the push-up force, the distance d is the distance The distance is extended from d ₂ to a distance d ₀ . Accordingly, even in this case, the nozzle body 100 is immediately restored to the equilibrium state.

Thus, in the present deposit removing apparatus X, even when the upper surface T1 of the plate member T moves up and down, the nozzle body 100 moves up and down following the upper and lower sides, so that the plate member The distance d from the upper surface T1 of T to the nozzle body 100 is always maintained substantially constant. That is, even when the plate-like member T vibrates, a constant separation distance d is always maintained, so the separation distance d is set to a distance d ₀ (for example, 0.1 mm) that is as close to 0 as possible. Even if it does, the nozzle body 100 does not contact the said plate-shaped member T, Therefore, the said plate-shaped member T is not damaged.
Here, when the plate-shaped member T suddenly fluctuates up and down, the nozzle body 100 also fluctuates up and down abruptly following the up-and-down fluctuation, so the nozzle body 100 overshoots or undershoots up and down. There is a risk of it happening. Further, the overshoot and undershoot may occur periodically, and the nozzle body 100 may be hunted. Therefore, it is desirable that the nozzle body 100 be elastically supported by an elastic member such as a spring in order to prevent the above-described overshoot and hunting. Specifically, a method of interposing a helical spring in the slide bar 111, a method of using the slide bar 111 formed of a buffer member such as an oil damper, and the like can be considered.

By the way, the opening area of the injection port 101 formed on the facing surface 102 of the nozzle body 100 and the area of the facing surface 102 are important factors for floating the nozzle body 100. The reason will be described below with reference to FIG. Here, for the sake of convenience, the description will be made ignoring the weight of the nozzle body 100.
As shown in FIG. 5B, when the separation distance d is increased, as described above, the resistance to block the flow of compressed air in the space of the separation distance d is reduced, and the compressed air flowing out to the outside is reduced. The flow rate increases. Therefore, the adsorption pressure P ₂ (negative pressure) is generated on the facing surface 102 of the nozzle body 100 (particularly the peripheral portion of the injection port 101). The suction pressure P2 acts as a force for attracting the nozzle body 100 to the plate member T. Here, the total value of the push-up pressure P ₁ (> 0), the adsorption pressure P 2 (<0), and the opening area of all the injection ports 101 for pushing up the nozzle body 100 by the injection pressure of the compressed air is S _1. when the total value of the area above the suction pressure P2 in the opposing surface 102 of the nozzle body 100 acts to S _2, if _{(P 1 × S 1) +} (P2 × S 2) <0 condition is satisfied, Since the attraction force to be attracted to the plate member T is superior to the push-up force to push the nozzle body 100 upward, the nozzle body 100 is pulled down.
Accordingly, it is considered that it is sufficient to satisfy the condition of P ₁ × S ₁ > P ₂ × S ₂ in order to float the nozzle body 100 while maintaining the distance d ₀ regardless of the size of the separation distance d. It is done. Here, since the injection pressure P ₁ and the average pressure P ₂ have a correlation, in order to satisfy the above condition, the areas S ₁ and S ₂ may be regarded as fluctuation values so as to satisfy the above condition.
On the other hand, fouling of the plate-like member T to be removed by the compressed air flowing through the opposite surface 102 of the nozzle body 100, hardly deposits are removed with reduced too as compared with the area S ₁ of the area S ₂ The removal effect will be reduced.

Therefore, the inventor of the present application as a condition satisfying both the condition for floating the nozzle body 100 while maintaining the distance d ₀ and the condition for enhancing the removal effect.
S ₁ <2S ₂ (1)
Has been found through repeated experiments and research. Here, when the area of the facing surface 102 of the nozzle body 100 is S, this area S can be approximated as S≈S ₁ + S _2, and thus the above equation (1) can be modified as follows. Can do.
3S ₁ <2S (2)
That is, if the injection port 101 is formed such that the total area of the openings of the injection ports 101 is less than about two-thirds of the area of the facing surface 102, the pressure of the compressed air is affected. Accordingly, it is easy to balance the push-up force and the suction force, and the nozzle body 100 can be stably floated following the vibration of the plate-like member T, and a sufficient removal effect can be obtained. .

By the way, in this embodiment, the compressed air pressure supplied to the nozzle body 100 is adjusted so that the distance d ₀ is 0.1 mm which is relatively close to 0. The reason why the separation distance d is set to a value close to 0 will be described below.
As shown in FIG. 4, the area of the range in which the compressed air is blown in the direction perpendicular to the upper surface T1 of the plate member T and the compressed air collides with the plate member T (enclosed by the broken line in FIG. 4). ), And W is the flow velocity of compressed air until the compressed air collides with the plate member T (average flow velocity at the separation distance d), the larger the value of WV ² , It is thought that the force which removes the deposit | attachment on the upper surface T1 is large. Here, if the flow rate of the compressed air injected from the injection port 101 of the nozzle body 100 is Q, it can be approximated as Q≈WV.
WV ² ≈QV (3)
Can be expressed as Here, when the flow rate Q to be injected is constant, it can be easily understood from the above formula (3) that the larger the flow velocity V, the greater the force for removing deposits.
In general, when compressed air is injected from the injection port 101 of the nozzle body 100, the compressed pressure is released and the compressed air is blown radially, so that the flow velocity V decreases as the distance from the injection port 101 increases. In addition, the atmosphere present in the space of the separation distance d becomes a resistance and causes the flow velocity V to decrease. Therefore, when the flow rate Q is constant, the smaller the separation distance d is, the larger the flow velocity V becomes, so that the force for removing the deposit increases. For this reason, in this embodiment, the compressed air pressure supplied to the nozzle body 100 is set so that the distance d ₀ is a value that is relatively close to 0, 0.1 mm.

Next, the deposit removal apparatus X1 according to the first embodiment of the present invention will be described with reference to FIG.
The deposit removing device X1 in this example is different from the deposit removing device X in the above embodiment in that it faces the upper surface T1 of the plate member T instead of the nozzle body 100 as shown in FIG. The nozzle body 100a in which the groove 107 is provided on the facing surface 102 is used. Note that the same components as those of the above-described embodiment are denoted by the same reference numerals as those of the above-described embodiment, and description thereof is omitted. Here, FIG. 6A is a schematic cross-sectional view showing a vertical cross section in the longitudinal direction of the nozzle body 100a (the left-right direction in FIG. 6), and FIG. 6B is the nozzle body 100a viewed from the arrow B in FIG. FIG. Although the groove 106 (see FIG. 2) formed in the nozzle body 100 is not shown in FIG. 6, the nozzle body 100a may have the groove 106 formed therein.
As shown in FIG. 6, the groove 107 is formed to communicate with each of the four injection ports 101 in a direction orthogonal to the conveying direction W <b> 2 of the plate-like member T (see FIG. 6B). Thereby, for example, even if the number of the injection ports 101 is small, the compressed air injected from the four injection ports 101 can be evenly injected over the entire width direction of the upper surface T1 of the plate member T.

Subsequently, the deposit removing apparatus X2 according to the second embodiment of the present invention will be described with reference to FIG.
In this embodiment, a nozzle body 100 b shown in FIG. 7 is used in place of the nozzle body 100. The nozzle body 100b included in the deposit removing device X2 has a conveying direction W2 (see FIG. 7A) of the plate-like member T and a moving direction W1 of the nozzle body 100b (see FIG. 7B) on the opposite surface 102. The four injection ports 101 are arranged in series in a direction W3 substantially orthogonal to the reference), and substantially the same injection port row 101b as the injection port row 101a including the four injection ports arranged in series. Are arranged on the downstream side of the direction W2 with a predetermined interval in parallel with the direction W3. By arranging the ejection port arrays 101a and 101b in parallel as described above, even if the deposits that could not be removed by the ejection port array 101a remain on the plate member T, the transport of the plate member T is performed. Since the deposit removal process is performed by the ejection port array 101b arranged on the downstream side in the direction W2, the deposit removal effect can be further improved. In this embodiment, the nozzle body 100b in which the two injection nozzle arrays (101a, 101b) are formed as described above is illustrated, but the present invention is not limited to two.
Further, the nozzle body 100b is formed with a flat nozzle 108 having a long opening in the transport direction W2 of the plate member T and the direction W3 substantially orthogonal to the movement direction W1 of the nozzle body 100b. By forming such a planar nozzle 108, it becomes possible to uniformly inject compressed air over the entire width direction of the upper surface T1 of the plate member T.
Here, each of the injection ports 101 described above is formed to inject compressed air substantially perpendicularly to the plate member T in order to move the nozzle bodies 100, 100a and the like in the moving direction W1. . However, the compressed air jetted perpendicularly to the plate-like member T acts exclusively to peel off the deposits, but there is little action to blow off the peeled deposits upstream in the transport direction W2 of the plate-like member T. Of course, the deposit removing device X2 is formed with a groove 106 for guiding the compressed air ejected from the ejection port 101 to the upstream side in the transport direction of the plate member T. Since a part of the compressed air jetted from the jet port 101 is used, the action of blowing off the separated deposits upstream in the transport direction W2 is not so great. In addition, since a part of the jetted compressed air flows through the groove 106, the force for separating the deposits can be reduced. Therefore, in this embodiment, as shown in FIG. 7B, the flat nozzle 108 is inclined so as to inject compressed air to the upstream side of the plate member T in the conveying direction.

The nozzle body 100b has an air reservoir 109a (corresponding to an example of a gas reservoir) that retains air that is injected from the injection port 101 and flows through the space between the facing surface 102 and the plate member T. Is formed. This is for accumulating the air having the separated deposit on the facing surface 102 side in order to efficiently remove the separated deposit. Further, an air escape hole 109b (corresponding to an example of a communication hole) that guides the air reservoir 109a to the outside is provided on the surface 103 side opposite to the facing surface 102 in order to release the air in the air reservoir 109a to the outside. Is formed.
If the air reservoir 109a and the air escape hole 109b are not present, the deposits peeled off by the jet of compressed air collide with the opposing surface 102 and reattach, and the injection port 101 is clogged with the deposits or blown away. However, in this embodiment, since the air reservoir 109a and the air escape hole 109b are provided, the adhered matter that has been peeled off is likely to be reattached to the plate member T. The contained air stays in the air reservoir 109a, and the staying air is discharged so as to be pushed out through the air escape hole 109b. Therefore, the above problem is reduced.
A blower fan (corresponding to an example of an intake means) connected to the air escape hole 109b by a pipe or a flexible hose may be provided. If the blower fan is driven to suck the air in the air reservoir 190a from the air escape hole 109b, it is possible to discharge the air containing the deposits more efficiently.

  Next, a third embodiment of the present invention will be described with reference to the block diagram of FIG. The deposit removing device X3 according to this embodiment connects the air escape hole 109b provided in the nozzle body 100b (see the second embodiment, FIG. 7) and a blower fan 121 which is an example of an intake means. Liquid or mist-like rolling oil (an example of liquid deposits) contained in the air discharged from the air escape hole 190b is separated from the air and collected in an oil tank 130 provided outside the apparatus. And an ejector 122 that guides the separated rolling oil to the oil tank 130. The other components of the deposit removal apparatus X3 are the same as the configuration of the deposit removal apparatus X2 according to the second embodiment described above, and the description of the other components is omitted here.

Various oil separators 120 are conceivable. Here, an oil filter 120a for separating only the rolling oil from the air is disposed inside, and a drain for storing the rolling oil separated by the oil filter 120a is stored. The apparatus which has the drain layer 120b with the hole 120c is illustrated.
The ejector 122 is connected to the drain hole 120c, and is rolled from the drain layer 120b using negative pressure generated inside the ejector 122 when the compressed air supplied from the outside is recirculated by the ejector 122. Oil is sucked and guided to the oil tank 130. During the operation of the blower 121, in the oil separator 120, air flows along the flow path from the nozzle body 100 b through the oil filter 120 a to the blower 121, which is caused by the negative pressure generated by the air flow. Thus, the rolling oil of the drain layer 120b is difficult to be discharged from the drain hole 120c. However, since the deposit removing device X3 is provided with the ejector 122, even when the blower 121 is in operation, It becomes possible to forcibly discharge the rolling oil.

In the adhered matter removing apparatus X3 configured as described above, when the air discharged from the air escape hole 190b is sent to the oil separator 120, the rolling oil is separated by the oil filter 120a. The air from which the rolling oil is separated is sucked out of the oil separator 120 by the blower fan 121 and discharged to the outside. Meanwhile, the rolling oil separated by the oil filter 120a is stored in the drain layer 120b. The rolling oil accumulated in the drain layer 120 b is sucked out from the drain hole 120 c by the ejector 122 and discharged toward the oil tank 130.
When the compressed air is constantly supplied to the ejector 122, when all of the rolling oil in the drain layer 120b is discharged, not only the air is discharged from the drain hole 120c, but the separation efficiency of the rolling oil is reduced. There is a risk that the blower 121 will be heavily loaded. Therefore, it is preferable to supply compressed air to the ejector 122 intermittently, that is, every predetermined time. Alternatively, a flow switch or the like is provided in the drain layer 120b, and a compressed air switching valve or the like is operated on condition that an output signal from the flow switch indicating that a predetermined rolling oil is stored is received. The compressed air may be supplied for a predetermined time.

Thus, in this deposit removal apparatus X3, since air and rolling oil are isolate | separated and rolling oil is collect | recovered by the oil tank 130, the air containing rolling oil does not need to be discharge | released in air | atmosphere, It is possible to remove the harm to the environment. Since the discharged rolling oil is recovered, the rolling oil can be reused.
In this embodiment, an example in which the rolling oil is separated and recovered has been described. However, for example, the deposit removing apparatus X3 according to this embodiment is applied to a case where liquid deposits other than the rolling oil are separated and recovered. Is possible.
If an air filter (not shown) that separates solid deposits such as dust from the discharged air is provided in place of the oil filter, not only liquid deposits but also solid deposits can be separated and recovered. It becomes possible.

  Next, a fourth embodiment of the present invention will be described with reference to FIG. The deposit removing apparatus X4 according to this example is provided with the nozzle body 100 in the above-described embodiment not only on the upper surface T1 side of the plate member T but also on the lower surface T2 side. Here, when the nozzle body 100 is provided on the lower surface T2 side of the plate-like member T, the nozzle body 100 is disposed so as to inject compressed air in a direction opposite to that provided on the upper surface T1 side. Must. Therefore, in this case, as shown in FIG. 9, the nozzle body 100 is prevented from moving downward by its own weight, and the nozzle body 100 is moved in a direction W1 substantially perpendicular to the lower surface T2 of the plate member T. The nozzle body 100 is elastically supported by an elastic member 113 such as a helical spring. By being configured in this way, it is possible not only to remove deposits on both surfaces of the plate-like member T, but also to prevent overshooting, undershooting, or hunting of the nozzle body 100 in the vertical direction. It becomes possible to do.

In the deposit removing apparatus according to the above-described embodiment and each example, when the nozzle body 100 is disposed above the plate-like member, the pressure of the compressed air supplied from the air pressure source 5 is reduced. There is a problem in that the nozzle body 100 falls and damages the plate-like member T by being lowered for some reason. The deposit removing apparatus X5 according to the fifth embodiment of the present invention described here is configured to solve the above-described problems.
Specifically, as shown in the block diagram of FIG. 10, in addition to the pressure reducing valve 3, the air filter 4, the controller 1, and the nozzle body 100, a predetermined operating pressure value (specified pressure value) is set. The pressure switch 7 and a cylinder 140 (an example of drive means) that operates when compressed air is supplied. Unlike the configuration of the above-described embodiment and example, a three-way solenoid valve 2a that can be switched in three ways is used instead of the solenoid valve 2.

The cylinder 140 is a single-acting cylinder having an elastic member 140a such as a spring and a piston 140b therein, and applies a predetermined pressure (at least a force greater than the urging force of the elastic member 140a to the piston 140b. When the above compressed air is supplied to the air supply chamber 140d, the piston 140b operates in a direction opposite to the biasing direction of the elastic member 140a (the direction in which the elastic member 140a is compressed). It is. The cylinder 140 is attached to the support member 141 so that the piston 140b operates in the vertical direction and the piston 140b operates in the upward direction by supplying compressed air.
The piston shaft 140c extending below the piston 140b is connected to a support member 142 that supports the nozzle body 100 via the elastic member 113 (see FIG. 9). By being connected in this way, when the piston 140b is operated, the nozzle body 100 is lifted in a direction substantially perpendicular to the surface of the plate member T.

The solenoid valve 2 a is a three-way solenoid valve having one input port and two output ports, and the input port P ₁ is connected to the air pressure source 5 by piping. On the other hand, of the two output ports, the port P ₂ that communicates with the air pressure reduction 5 by demagnetization is connected to the air supply chamber 140d of the cylinder 140 by piping, and communicates with the air pressure reduction 5 when excited. The port P3 is connected to the pressure reducing valve 3 by piping.
The pressure switch 7 transmits a detection signal to the controller 1 when the compressed air supplied to the nozzle body 100 becomes less than a predetermined specified pressure. The specified pressure is a minimum pressure required for the nozzle body 100 to float.

In the adhered matter removing apparatus X5 configured as described above, a detection signal is sent from the pressure switch 7 to the controller 1 while the nozzle body 100 is floating (floating) by supplying compressed air. When output, the three-way solenoid valve 2a is demagnetized by the controller 1. Thus, the three-way solenoid valve 2a is activated, the output port P3 is closed, and the output port P ₂ is opened. Thereafter, compressed air is supplied to the air supply chamber 140d via the output port P _2. As described above, the controller 1 that controls the three-way electromagnetic valve 2a corresponds to the drive control means.
In the cylinder 140, when compressed air is supplied to the air supply chamber 140d, the piston 140b moves upward, and the nozzle body 100 is lifted upward as the piston 140b moves.
As described above, when the pressure of the compressed air supplied to the nozzle body 100 becomes less than the specified pressure, the nozzle body 100 is lifted by the cylinder 140, and thus the plate member T due to the drop of the nozzle body 100 is used. Damage is prevented.

In the fifth embodiment, the case where the nozzle body 100 is disposed on the upper surface side of the plate-like member T has been described. Of course, as described in the above-described fourth embodiment, the above plate-like member is used. The same can be applied to the case where the nozzle body 100 is disposed on the lower surface side of the member T. In this case, the cylinder 140 is disposed so that the nozzle body 100 is pulled down from the lower surface of the plate-like member T by the operation of the piston 140b.
In this embodiment, an example in which a single-acting cylinder 140 is used as the driving means has been described. However, for example, a double-acting cylinder may be used.

The block diagram explaining the outline of the air control system of the deposit | attachment removal apparatus X which concerns on embodiment of this invention. The schematic diagram explaining the nozzle body of the deposit | attachment removal apparatus X, and. The figure showing the relationship between the force F which acts on the nozzle body 100, and the separation distance d. The schematic diagram explaining the relationship between the separation distance d and the deposit removal effect. The figure which shows the pressure distribution of the vicinity of the injection nozzle 101. FIG. The schematic diagram explaining the nozzle body 100a of the deposit | attachment removal apparatus X1 which concerns on 1st Example of this invention. The schematic diagram explaining the nozzle body 100b of the deposit | attachment removal apparatus X2 which concerns on the 2nd Example of this invention. The block diagram which shows schematic structure of the deposit | attachment removal apparatus X3 which concerns on the 3rd Example of this invention. The schematic diagram explaining the nozzle body 100c of the deposit | attachment removal apparatus X4 which concerns on the 4th Example of this invention. The block diagram which shows schematic structure of the deposit | attachment removal apparatus X5 which concerns on the 5th Example of this invention. The figure which shows arrangement | positioning of the magnet used for embodiment of this invention. The figure which shows the concept of the magnetic force line of the magnet shown in FIG. The graph which shows the relationship between the number of magnets, and a vibration suppression effect (vibration damping factor). FIG. 12 is a detailed view of the magnet shown in FIG. 11. The figure which shows the vibration suppression principle in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Controller 2 ... Solenoid valve 3 ... Pressure reducing valve 4 ... Air filter 5 ... Air pressure source 6 ... Pipe line 7 ... Pressure switch 100 ... Nozzle body 101 ... Injection port 102 ... Opposite surface 104 ... Supply port 105 ... Communication channel 106 ... Groove 107 ... groove 108 ... flat nozzle 109a ... air reservoir 109b ... air escape hole 110 ... slide mechanism 111 ... slide bar 112 ... slide guide 113 ... elastic member 120 ... oil separator 121 ... blower 122 ... ejector 130 ... oil tank 140 ... cylinder 300 ... magnet 302 ... magnet holder

Claims (15)

One or more injection holes are formed on the opposing surface facing the surface of the traveling paramagnetic plate member, and the nozzle body is supported so as to be movable in a direction substantially perpendicular to the surface of the paramagnetic plate member. In the deposit removing apparatus for removing deposits such as rolling oil and cleaning oil adhering to the paramagnetic plate-like member by jetting compressed gas from the jet port of the nozzle body,
A deposit removing apparatus, wherein the nozzle body is provided with a magnet whose magnetic flux intersects with the paramagnetic plate-like member.   The deposit removing apparatus according to claim 1, wherein magnets whose magnetic flux intersects the paramagnetic plate member are provided on one side or both sides of the paramagnetic plate member.   3. The deposit removing apparatus according to claim 1, wherein magnetic poles on opposite surfaces of magnets provided on both sides of the paramagnetic plate member are different.   The deposit removing apparatus according to any one of claims 1 to 3, wherein the magnet is disposed horizontally long in a direction perpendicular to the traveling direction of the paramagnetic plate member.   The deposit removing apparatus according to any one of claims 1 to 4, wherein the magnet is divided into a plurality of parts in a direction perpendicular to the traveling direction of the paramagnetic plate member.   The nozzle body is supported so as to be movable in a direction substantially perpendicular to the surface of the paramagnetic plate member, and air that is injected from the injection port and flows through a gap between the paramagnetic plate members. The deposit according to any one of claims 1 to 5, wherein the nozzle body is lifted and supported from the paramagnetic plate member by using an adsorption pressure which is a negative pressure generated based on a flow. Removal device.   A depression chamber is formed on the opposite surface of the nozzle body, upstream of the paramagnetic plate-like member in the traveling direction, adjacent to the nozzle body and recessed in a direction away from the plate-like body. The deposit removing apparatus according to any one of 1 to 6.   The deposit removing apparatus according to claim 7, wherein a plurality of the depression chambers are formed in a traveling direction of the paramagnetic plate member.   The wall surface on the downstream side of the paramagnetic plate member in the running direction of the depression chamber is formed so as to be inclined toward the downstream side in the running direction of the paramagnetic plate member as it goes toward the end of the paramagnetic plate member. Item 10. The deposit removing apparatus according to any one of Items 7 and 8.   The deposit removing apparatus according to any one of claims 7 to 9, wherein an exhaust means connected to an intake source is connected to the one or more depressed chambers.   The deposit removing device according to any one of claims 1 to 10, wherein the injection ports are arranged in series or in parallel in a direction substantially perpendicular to a conveying direction of the paramagnetic plate member and a moving direction of the nozzle body. .   The planar nozzle which has a long opening part in the direction substantially orthogonal to the conveyance direction of the said paramagnetic plate-shaped member, and the movement direction of the said nozzle body is provided in the said opposing surface. Deposit removal device.   The deposit removing apparatus according to any one of claims 1 to 12, wherein the nozzle body is provided on one or both of the upper surface side and the lower surface side of the paramagnetic plate member. The opposed surface is provided with a depression-like gas reservoir for storing the compressed gas injected from the injection port,
The deposit removing apparatus according to any one of claims 1 to 13, wherein a communication hole for guiding the gas in the gas reservoir to the outside of the nozzle body is formed in the nozzle body.   The deposit removing apparatus according to claim 14, further comprising suction means for sucking gas in the gas reservoir from the communication hole.

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