KR102135156B1 - Cleaning apparatus and method for surface of roll - Google Patents

Abstract

Disclosed is an apparatus and method for removing foreign substances on a roll surface. According to an aspect of the present invention, in the apparatus for removing foreign matter attached to the surface of the synthetic rubber roll used in the electro-galvanizing process, provided on the strip outlet side of the electro-galvanizing process to inspect the surface of the strip Defect detector; A frame provided to be spaced apart from the synthetic rubber roll; A moving means installed on the frame and having a moving cart movable in the longitudinal direction of the synthetic rubber roll; An injection means installed on the mobile cart and spraying pure water toward the surface of the synthetic rubber roll to remove foreign substances; Suction means installed on the mobile cart to be adjacent to the injection means and suctioning and discharging foreign substances and pure water removed from the injection means; And a control means for controlling the operation of the moving means so that the injection means removes the foreign matter on the synthetic rubber roll according to the detection signal transmitted from the surface defect detector.

Description

Cleaning apparatus and method for surface of roll

The present invention relates to an apparatus and method for removing foreign substances on a roll surface, and more particularly, to an apparatus and method for removing foreign substances attached to the surface of a synthetic rubber roll used in an electro zinc plating process. .

In general, in the electro-galvanization process of the production line of a steel mill, weldability and workability are performed by washing the steel sheet (hereinafter referred to as a'strip') that has been subjected to cold rolling annealing, and then plating the surface of the strip through electroplating or post-treatment. And galvanized steel sheet with excellent paintability.

On the other hand, the electroplated strip has a low surface hardness compared to other products, such as hot dip galvanizing, and thus, damage to the strip surface occurs when a steel roll is used in the electrogalvanizing process line. To prevent this, synthetic rubber rolls such as rubber or urethane are used in addition to some exceptional facilities.

However, as the synthetic rubber roll is used, the foreign matter is easily attached as compared to the conventional steel roll, and there is a problem that the foreign matter is not easily removed.

In order to solve this, a doctor blade having a length corresponding to the length of the synthetic rubber roll is contacted with the surface of the synthetic rubber roll to remove foreign substances. However, by removing the foreign material by directly contacting the surface of the synthetic rubber roll with the doctor blade, deformation of the surface of the synthetic rubber roll may occur, and there is a problem that additional foreign matter may occur due to wear of the doctor blade.

In addition, when zinc fragments are embedded in the synthetic rubber roll, it is not easy to remove, so there is a problem in that the production line is stopped and the worker must remove the zinc fragments by hand.

In addition, since the doctor blade is in direct contact with the synthetic rubber roll to remove foreign substances, the removed foreign substances are accumulated on the top of the doctor blade, and the foreign substances accumulated on the top of the doctor bleed can be transferred to other rolls, causing secondary defects. There is this.

In the roll surface foreign matter removal apparatus and method according to an embodiment of the present invention, when the defect occurs due to the adhesion of the foreign matter on the roll, the removal device moves to the position where the defect occurs, thereby removing the foreign matter, so that the foreign matter removal operation is possible during the operation and is quickly performed. It should be possible to minimize degradation and quality defects.

In addition, the apparatus and method for removing foreign substances on the surface of a roll according to an embodiment of the present invention remove foreign substances through spraying of pure water, and also prevent the occurrence of secondary defects by suctioning and discharging the foreign substances and pure water.

According to an aspect of the present invention, in the apparatus for removing foreign matter attached to the surface of the synthetic rubber roll used in the electro-galvanizing process, provided on the strip outlet side of the electro-galvanizing process to inspect the surface of the strip Defect detector; A frame provided to be spaced apart from the synthetic rubber roll; A moving means installed on the frame and having a moving cart movable in the longitudinal direction of the synthetic rubber roll; An injection means installed on the mobile cart and spraying pure water toward the surface of the synthetic rubber roll to remove foreign substances; Suction means installed on the mobile cart to be adjacent to the injection means and suctioning and discharging foreign substances and pure water removed from the injection means; And a control means for controlling the operation of the moving means so that the injection means removes the foreign substances on the synthetic rubber roll according to the detection signal transmitted from the surface defect detector.

In addition, the moving means, both ends are rotatably supported on the frame screw rails are disposed parallel to the synthetic rubber roll; A motor that transmits rotational force to the screw rail; A moving bogie in which a through hole that is screwed with the screw rail is formed and installed to be movable in the longitudinal direction of the screw rail; And a guide rod spaced apart from the screw rail by a predetermined distance and installed through the mobile cart.

In addition, the moving means may further include a support plate extending toward the synthetic rubber roll, and the injection plate and the suction means may be provided on the support plate.

In addition, the injection means, a plurality of injection nozzles provided at regular intervals in the longitudinal direction of the synthetic rubber roll on the support plate; And a pure water supply unit connected to the spray nozzle and a supply pipe to supply high-pressure pure water to the spray nozzle.

In addition, the injection nozzle may be provided so that the high pressure pure water injected through the injection nozzle faces the synthetic rubber roll adjacent to the suction means.

In addition, the suction means, installed on the support plate to be located on the lower side of the injection nozzle and dust cover formed to surround the rear side and the lower side and both sides to prevent the high-pressure sprayed water is scattered around; A suction port located at a lower rear side of the dust cover; And a suction pump connected to the suction port and the suction pipe to operate to suck foreign substances and pure water through the suction port.

In addition, the control means is provided on both ends of the frame in the direction in which the moving cart moves, a position sensor for sensing the position of the moving cart; And a controller that receives a detection signal when a defect is generated on the surface of the strip from the surface defect detector and drives the moving means. The controller includes a moving cart based on the location and length of the defect through the surface defect detector. It can be controlled to move to the position where the defect occurred.

According to another aspect of the present invention, the surface of the strip discharged through the electrolytic zinc plating process is inspected by a surface defect detector, and when a defect is detected on the surface of the strip, the control means generates a defect on the surface of the strip based on the detection signal. A method of removing foreign substances by injecting and removing the removed foreign substances and pure water by driving the moving means to position the moving cart with the synthetic rubber roll in the position, and spraying pure water at high pressure through the spraying means provided on the moving cart. This can be provided.

In addition, the control means may match the preset diameter of the synthetic rubber roll based on the length of the defect section to move the moving cart of the device disposed on the synthetic rubber roll where the defect is generated to a position corresponding to the defective section of the strip.

In addition, the control means may control the moving cart to be located in the defect generation section by detecting the position of the moving cart through the position sensor provided on the side of the moving cart.

In addition, it is possible to remove foreign substances by specifying the injection pressure and the injection time of the pure water sprayed from the injection means according to the defect state of the strip detected through the surface defect detector.

The apparatus and method for removing foreign substances on the surface of a roll according to an embodiment of the present invention do not directly contact the roll and remove foreign substances through spraying of pure water. Unrolling the roll that occurred in the process of removing the foreign material has the effect of preventing damage problems and secondary defects caused by the removed foreign material.

In addition, when a defect occurs due to the adhesion of the foreign matter on the roll, the removal device moves to the position where the defect occurs, thereby removing the foreign matter during the work, and it is possible to remove the foreign matter even during the operation, so it is possible to minimize productivity degradation and quality defects.

The present invention will be specifically described by the following drawings, but these drawings represent preferred embodiments of the present invention, and the technical idea of the present invention should not be interpreted as being limited only to the drawings.
1 is a perspective view showing a roll surface foreign matter removal apparatus according to an embodiment of the present invention.
2 is a front view of a roll surface foreign matter removal apparatus according to an embodiment of the present invention.
3 is a side view showing a spray means and a suction means provided in the apparatus for removing foreign substances on a roll according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are presented to sufficiently convey the spirit of the present invention to those of ordinary skill in the art. The present invention is not limited to the embodiments presented herein, but may be embodied in other forms. To clarify the present invention, the illustration of parts irrelevant to the description may be omitted, and the size of components may be exaggerated to facilitate understanding.

1 is a perspective view showing a roll surface foreign matter removal apparatus according to an embodiment of the present invention, FIG. 2 is a front view of a roll surface foreign matter removal apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention It is a side view showing the injection means and the suction means provided in the roll surface foreign matter removal device according to.

1 to 3, the roll surface foreign matter removal apparatus according to an aspect of the present invention is a surface defect detector (SDD: Surface Defect Detector) for inspecting the surface of the strip 10, a synthetic rubber roll 20 and a schedule A moving means 120 and a moving vehicle (120) provided with a frame (110) provided to be spaced apart from each other, a moving vehicle (123) installed in the frame (110) and movable in the longitudinal direction of the synthetic rubber roll (20) 123) is installed on the surface of the synthetic rubber roll 20, the injection means 130 for spraying pure water to remove foreign substances, and is installed on the mobile cart 123 so as to be adjacent to the injection means 130 and injection means The injection means 130 removes the foreign substances on the synthetic rubber roll 20 according to the detection signals transmitted from the suction means 140 and the surface defect detector (SDD) that sucks and discharges the foreign substances and pure water removed from the 130 So it includes control means for controlling the operation of the moving means (120).

The roll surface foreign substance removal apparatus is provided to remove foreign substances attached to the surface of the synthetic rubber roll 20 used in the electrolytic zinc plating process. On the other hand, as shown, the roll surface foreign substance removal device is provided to clean the surface of one synthetic rubber roll 20, but is not limited thereto, and the rest of the configuration except for the surface defect detector (SDD) is used in the electro zinc plating process It may be provided on each of the plurality of synthetic rubber rolls 20 to be selectively made to remove foreign substances attached to the synthetic rubber roll (20).

The surface defect detector (SDD) is provided on the exit side of the strip 10 of the electro-galvanizing process and serves to inspect the surface of the strip 10. For example, the surface defect detector (SDD) captures an image through a camera (not shown), stores and analyzes the captured image to identify a defect section. That is, the surface defect detector (SDD) may transmit the defect location and the length of the defect section to the control means as a detection signal. At this time, the defect section may be specified based on the photographing information obtained through the surface defect detector (SDD) by the control means.

The frame 110 is provided to be spaced apart from the synthetic rubber roll 20 at regular intervals. According to the drawing, it is provided to face the synthetic rubber roll 20 on both sides in the width direction of the strip (10). The frame 110 may have any structure provided that the synthetic rubber roll 20 and the strip 10 are provided so as not to interfere with peripheral equipment.

The moving means 120 is installed on the screw rail 121, the motor 122 for transmitting the rotational force to the screw rail 121, and the screw rail 121 is installed so that both ends are rotatably supported on the frame 110 A mobile cart 123 is provided.

The screw rail 121 is disposed parallel to the synthetic rubber roll 20 and installed on the frame 110. A screw thread is formed on the outer circumferential surface of the screw rail 121 and is screwed with a moving cart 123 to be described later.

The motor 122 is installed at one end of the frame 110 to rotate the screw rail 121 in the forward and reverse directions. The motor 122 may have a motor shaft (not shown) directly connected to the screw rail 121, but may be connected to transmit rotational force through a gear connection structure.

The moving cart 123 is installed to be movable in the longitudinal direction of the screw rail 121. The mobile cart 123 is provided in a block shape, and a through hole is formed to be screwed with the screw rail 121. That is, a thread is formed in the through hole, and the screw rail 121 is screwed through the through hole. The moving cart 123 may move in the longitudinal direction of the screw rail 121 according to the rotation direction of the screw rail 121. At this time, the moving rod 123 may further include a guide rod 124 installed through the moving vehicle 123 so as to move in the longitudinal direction of the screw rail 121.

The guide rod 124 is provided to be spaced apart from the screw rail 121 at a predetermined interval to penetrate the mobile cart 123. According to the illustrated, the guide rod 124 is disposed parallel to the screw rail 121, and both ends are fixed to the frame 110. That is, the guide rod 124 limits the rotation of the mobile cart 123 and performs a guide role to stably move when the mobile cart 123 moves.

Meanwhile, the moving cart 123 may further include a support plate 125 extending toward the synthetic rubber roll 20. The support plate 125 may be provided with injection means 130 and suction means 140.

The injection means 130 is provided with a plurality of injection nozzles 131 for spraying pure water toward the synthetic rubber roll 20 and a pure water supply unit 133 connected to the injection nozzle 131 and the supply pipe 132 to supply pure water do.

The plurality of injection nozzles 131 are installed on the support plate 125. At this time, the injection nozzle 131 is installed to be spaced apart at regular intervals in the longitudinal direction of the synthetic rubber roll (20). In addition, the pure water sprayed through the injection nozzle 131 may be installed to face the synthetic rubber roll 20 of the portion adjacent to the suction means 140. This is to ensure that the foreign matter attached to the surface of the pure and synthetic rubber rolls 20 sprayed through the spray nozzle 131 is dropped and easily sent to the suction means 140. Since the injection nozzle 131 is provided to move together when the moving cart 123 moves, the supply pipe 132 may be provided with a flexible material.

Meanwhile, although it has been illustrated and described as supplying pure water to the spray nozzle 131 through the pure water supply unit 133, the present invention is not limited thereto, and pure water may be directly supplied to the spray nozzle 131 through a utility pipe of a factory. In addition, a valve (not shown) may be installed in the supply pipe 132 to easily control the supply and shutoff of pure water.

The suction means 140 is connected to the suction cover 142 through the dust cover 141 provided to be located below the injection nozzle 131 and the suction port 142 and the suction pipe 143 formed in the dust cover 141. It is provided with a suction pump 144 to be operated to inhale foreign substances and pure water.

The dust cover 141 is installed on the support plate 125. According to the illustrated, the dust cover 141 may be provided in a form surrounding the rear side and the lower side and both sides so as to prevent scattering of pure water injected at high pressure to the surroundings. Accordingly, foreign matter or pure water or contaminated water attached to the surface of the synthetic rubber roll 20 may be scattered by pure water to prevent contamination of the surroundings.

On the other hand, the dust cover 141 is able to accommodate a certain amount of foreign matter and pure water by having an inclined shape toward the rear side so as to easily discharge foreign matter and pure water.

The intake 142 may be formed at a lower side of the rear side of the dust cover 141 to easily discharge foreign substances and pure water. In addition, a plurality of suction ports 142 may be formed at regular intervals in the longitudinal direction of the synthetic rubber roll 20.

The suction pump 144 may operate in conjunction with the injection means 130. For example, it operates when the pure water is injected through the injection nozzle 131, and when the pure water is blocked, it may be controlled to stop the operation of the suction pump 144. Accordingly, even if foreign matter and pure water are generated through the injection means 130, the suction means 140 is operated to immediately recover the foreign matter and pure water, thereby preventing contamination of surrounding components. Foreign matter and pure water and contaminated water sucked by the suction pump 144 are discharged to a pit through the suction pipe 143, and there is no need to have a separate storage container.

The control means is provided to control the moving means 120, the injection means 130 and the suction means 140 according to the detection signal transmitted from the surface defect detector (SDD). More specifically, the control means is a position sensor 151 that detects the position of the mobile cart 123 and a controller 152 that controls each means 120, 130, 140 based on previously input set data and received information. It is provided.

The position sensor 151 is installed on the frame 110 and serves to sense the position of the moving cart 123. According to the illustrated, the position sensor 151 is provided at both ends of the frame 110 in the direction in which the moving cart 123 moves. Accordingly, the moving cart 123 may be controlled to be positioned at a desired position when moving in the longitudinal direction of the synthetic rubber roll 20.

The controller 152 receives the detection signal when a defect is generated on the surface of the strip 10 from the surface defect detector (SDD), and controls the moving cart 123 to move to the position where the defect is generated. At this time, the position of the moving cart 123 is controlled by receiving position information through the position sensor 151. In addition, the controller 152 controls the driving of the injection means 130 and the suction means 140 to remove and discharge foreign substances attached to the surface of the synthetic rubber roll 20.

Then, a method of removing foreign substances through the above-described roll surface foreign substance removal apparatus will be described.

The surface of the strip 10 discharged through the electrolytic zinc plating process is inspected with a surface defect detector (SDD). For example, the surface defect detector (SDD) may inspect the quality of the surface of the strip 10 through a camera (not shown). At this time, when a defect is detected on the surface of the strip 10, a detection signal is transmitted to the control means, that is, the controller 152. Here, the information of the detection signal may be a location where a defect is formed through imaging and a defect generation length (pitch).

The controller 152 matches the detection signal transmitted from the surface defect detector (SDD) with the diameter of the preset synthetic rubber roll 20 to identify the synthetic rubber roll 20 having a defect, and is located in the synthetic rubber roll 20. The foreign material control device can be controlled. For example, the surface defect detector (SDD) transmits to the controller 152 a detection signal in a width direction and a length direction in which defects are generated on the surface of the strip 10 through the captured image information, that is, a combination. 152) controls the foreign matter control device located in the corresponding synthetic rubber roll 20 is defective.

Specifically, the controller 152 operates the motor 122 to move the moving cart 123 to be located in a section where a defect occurs. The position information of the mobile cart 123 is controlled through the position sensor 151 installed in the frame 110. When the mobile cart 123 is located in the defect section, the high pressure is sprayed through the injection nozzle 131 and the suction pump 144 is driven to suck foreign substances and pure water to discharge contaminated water. At this time, the conditions such as the length of the defect and the width of the defect formed in the defect section, that is, the pressure and the injection time of the pure water sprayed according to the size of the foreign material may be set to completely remove the foreign material.

As described above, when a defect occurs in the strip 10, the surface of the synthetic rubber roll 20 is detected and it is possible to remove foreign matter even during the operation, and thus it is possible to quickly reduce productivity and minimize quality defects. .

On the other hand, the roll surface foreign matter removal device is described as detecting a defect through a surface defect detector (SDD) and automatically removing the foreign matter, but is not limited thereto, and if necessary, the operator selectively cleans it by hand It is also possible to set the synthetic rubber roll 20 and the position to be performed to perform the washing operation.

As described above, although the present invention has been described by a limited number of embodiments and drawings, the present invention is not limited by this, and the technical idea of the present invention and the following will be described by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the equivalent scope of the claims to be described.

110: frame 121: screw rail
122: motor 123: moving cart
131: spray nozzle 132: supply piping
141: dust cover 142: intake
143: suction pipe 144: suction pump
151: position sensor 152: controller

Claims (11)

In the apparatus for removing foreign matter attached to the surface of the synthetic rubber roll used in the electrolytic zinc plating process,
A surface defect detector provided on the strip outlet side of the electro zinc plating process to inspect the surface of the strip;
A frame provided to be spaced apart from the synthetic rubber roll;
A moving means installed on the frame and having a movable cart movable in the longitudinal direction of the synthetic rubber roll and a support plate extending toward the synthetic rubber roll;
An injection means installed on the mobile cart and spraying pure water toward the surface of the synthetic rubber roll to remove foreign substances;
Suction means installed on the mobile cart to be adjacent to the injection means and suctioning and discharging foreign substances and pure water removed from the injection means; And
It includes; control means for controlling the operation of the moving means to remove the foreign material on the synthetic rubber roll in accordance with the detection signal transmitted from the surface defect detector;
The injection plate and the suction means are provided on the support plate,
The injection means,
A plurality of spray nozzles installed on the support plate at regular intervals in the longitudinal direction of the synthetic rubber roll; And
It is connected to the injection nozzle and the supply pipe; a pure water supply unit for supplying high-pressure pure water to the injection nozzle;
The suction means,
A dust cover installed on the support plate so as to be located on the lower side of the injection nozzle and surrounding the rear side and the lower side and both sides to prevent the pure water injected at high pressure from scattering around;
A suction port located at a lower rear side of the dust cover; And
It is provided with a suction pump connected to the suction port and the suction pipe to operate to suck foreign matter and pure water through the suction port,
The dust cover is a roll surface foreign matter removal device is provided to accommodate a certain amount of foreign matter and pure water by having an inclined shape toward the rear side to facilitate the discharge of foreign matter and pure water. According to claim 1,
The moving means,
Screw rails are rotatably supported at both ends of the frame and disposed parallel to the synthetic rubber roll;
A motor that transmits rotational force to the screw rail;
A moving bogie in which a through hole that is screwed with the screw rail is formed and installed to be movable in the longitudinal direction of the screw rail; And
Roll surface foreign matter removal device having a; spaced apart from the screw rail and guide rods installed through the mobile cart. delete delete According to claim 1,
The spray nozzle is a device for removing foreign substances on the surface of a roll provided that high-pressure pure water sprayed through the spray nozzle faces the synthetic rubber roll adjacent to the suction means. delete According to claim 1,
The control means,
A position sensor provided at both ends of the frame in the direction in which the moving cart moves, to sense the position of the moving cart; And
When the defect is generated on the surface of the strip from the surface defect detector, the controller receives the detection signal and drives the moving means.
The controller is a roll surface foreign matter removal apparatus for controlling the moving cart to move to the position where the defect occurs based on the position and length of the defect through the surface defect detector. delete delete delete delete

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