KR101591260B1 - Apparatus of skin pass mill - Google Patents

Abstract

Disclosed in the present invention are an apparatus and a method for grinding comprising a system to reduce surface defects. According to an embodiment of the present invention, the apparatus for grinding further comprises: a device to remove flaws on a material surface which removes flaws by grinding a surface of a material which passes a skin pass mill; and a device to remove foreign substances on a material edge which removes foreign substances on the edges of both sides of a material.

Description

{APPARATUS OF SKIN PASS MILL}

The present invention relates to a correction facility, and more particularly, to a correction facility based on a skin pass mill.

In general, finished products and semi-finished products produced by annealing and pickling using Hot Coil are subjected to a skin pass mill process to improve the shape. The skin pass mill process is the last step in hot rolling, in which raw materials produced by rolling are rewound and re-rolled to supply them to the car process and to the consumer.

The process of the skin pass mill is performed by supplying the material between the work roll and the work roll after annealing and pickling.

In this process, if there is a defect on the surface of the material, or if foreign matter penetrates into the work roll and causes defects on the surface of the material, the product is treated as an out-of-grade grade and is not certified as a product.

In addition, when a defect occurs in the above-described product, the worker must directly polish and think with a small grinder, which is always exposed to the risk of a safety disaster.

Also, if the worker manually operates, the productivity must be reduced because the correction method must be stopped.

Prior Art 1: Registration Patent Publication No. 10-0940706 (Announcement of Feb. 2010, 2010) Prior Art 2: Registered Patent Publication No. 10-0423871 (published on March 22, 2004) Prior Art 3: Laid-open Patent Publication No. 10-2014-0002886 (published on April 1, 2014)

An embodiment of the present invention is to provide a correction device capable of removing foreign matters existing on the surface of a roll, removing flaws existing on the surface of a workpiece, and removing foreign substances present at the edges of the workpiece in a series of correction methods .

According to an aspect of the present invention, there is provided a correction apparatus including a pay-off reel, a stand, and a tension reel, the apparatus comprising: a roll surface remover provided at one side of the stand for removing foreign matter on a surface of a work roll or a backup roll; A material surface scratch removal device for removing scratches by polishing the surface of the material; And a material edge removal device for removing foreign matter on both side edges of the workpiece.

Wherein the roll surface foreign material removing device is installed on an upper portion of an entry table located in front of the stand entry side, the material surface scratch removal device is installed on an upper portion of a first guide table positioned between a cutter and a deflector roll, The material edge removing apparatus may be provided with a correction facility installed on an upper portion of the second guide table positioned between the first guide table and the deflector roll.

Wherein the roll surface debris removing apparatus comprises a polishing unit including a polishing roll that polishes the surface of the working roll or the backup roll, and a cleaning unit that moves the polishing unit to the top of the work And a vertical driving unit for preventing the polishing unit from interfering with the workpiece while the polishing unit is moving down to the workpiece entry line during a maintenance process in which the workpiece does not enter the workpiece.

Wherein the roll surface remnant removing apparatus includes a polishing unit including a polishing wheel that can be moved back and forth in a direction approaching the work roll or the backup roll, and a polishing unit that moves the polishing unit in the direction of the rotation axis of the working roll or the backup roll And a base unit for moving the polishing unit in the up and down direction.

Wherein the roll surface debris removing apparatus further comprises a forward / backward driving section for moving the polishing unit in a direction approaching the working roll or the backup roll, and the polishing section further comprises a press driving section for moving the pressing direction of the polishing section , The advance and retreat drive unit may be provided with a correction facility for moving the polishing unit at a speed higher than a speed at which the pressure drive unit moves the polishing wheel.

Wherein the advance / retreat drive section includes a drive motor for moving the polishing unit, and an auxiliary motor for moving the polishing unit when the drive motor malfunctions, wherein the base unit includes a drive motor for moving the polishing unit, And an auxiliary motor for moving the polishing unit in the case where the polishing unit is malfunctioning.

The base unit includes a driving shaft disposed in the vertical direction and screwed to a driving nut provided in the polishing unit, a driving motor for rotating the driving shaft, and a driving motor for stopping rotation of the driving shaft, A correction device including a braking portion that can be fixed can be provided.

The material surface scratch removal apparatus includes a polishing unit including a polishing wheel rotatably provided, a first direction transfer frame for vertically moving the polishing unit, and a second direction transfer frame for transferring the first direction transfer frame in the entry direction And a third direction for moving the second directional transfer frame in the width direction of the workpiece may be provided.

Wherein the material edge removing apparatus comprises a polishing unit including a grinding wheel rotatably provided, a polishing unit for supporting the polishing unit, and a forward / backward driving unit for moving the polishing unit in a width direction of the material, The polishing unit may be provided on the polishing unit so as to be movable in the width direction of the workpiece.

The workpiece edge removing apparatus may further include a shock absorber interposed between the abrasive unit and the abrasive unit to reduce an impact applied to the abrasive wheel.

The material edge removing apparatus includes a jetting section including a plurality of nozzles jetting air or a cleaning liquid and arranged in the width direction of the workpiece, and a guide roller pressing the workpiece and rotating together with the progress of the workpiece A correction device further including a material pressing portion for performing a pressing operation can be provided.

The nozzles of the constant jetting portion may be provided with a correction facility in which the position of the nozzle located at the center in the width direction of the work is positioned forward of the position of the nozzle located at the outer periphery in the width direction of the work, .

According to another aspect of the present invention, there is provided a method for calibrating a workpiece by using a material surface scratch removing device having a material provided from a payoff reel to enter a space between work rolls of a stand to perform a calibrating operation, Removing contaminants on both side edges of the workpiece by using a workpiece edge removal device having a polishing wheel removable from the surface of the finished workpiece and movable in the width direction of the workpiece, And a grinding wheel which is movable both in the up-and-down direction and in the direction of entry of the work and in the axial direction of the work roll, when foreign matter on the work roll surface is removed A correction method can be provided.

The correction device according to the embodiment of the present invention improves the quality of a material product and improves the productivity by eliminating foreign substances on the surface of the roll, removing flaws on the surface of the material, and removing foreign substances from the edges of the material in a series of processes have.

In addition, it is possible to improve the productivity and the safety of the workers by using the automatic device by deviating from the way of manually grinding the work of polishing and polishing the roll.

1 is a configuration diagram showing a correction apparatus according to an embodiment of the present invention.
2 is a perspective view showing a state in which the roll surface foreign matter removal device according to the embodiment of the present invention is viewed from the direction opposite to the direction of the entrance of the roll surface.
FIG. 3 is an exploded perspective view of FIG. 2. FIG.
4 is a perspective view showing a state in which the roll surface foreign material removing device according to the embodiment of the present invention is viewed from the direction of entering the work.
5 to 8 show an operation of a roll surface material removing apparatus according to an embodiment of the present invention,
Fig. 5 shows the operation waiting state, Fig. 6 shows a state in which the roll surface foreign material removing apparatus according to the embodiment of the present invention descends, Fig. 7 shows a state in which the polishing unit advances, and Fig. Sectional view.
FIG. 9 is a perspective view showing a material surface flaw removing apparatus according to an embodiment of the present invention as viewed from the direction of entering the work. FIG.
10 is a perspective view showing an operation of a material surface flaw removing apparatus according to an embodiment of the present invention.
FIG. 11 is a perspective view showing a material corner foreign material removal device according to an embodiment of the present invention when viewed from the direction of material entry. FIG.
12 is a sectional view taken along the line XII-XIII in Fig. 11 for showing the configuration of the polishing portion.
FIGS. 13 and 14 illustrate operations of a material edge removing apparatus according to an embodiment of the present invention,
Fig. 13 is a rear view showing a state in which the work waiting state is seen, and Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below and may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 is a configuration diagram showing a correction apparatus according to an embodiment of the present invention.

Coils rolled and rolled in hot rolled steel are subjected to a cooling operation in order to supply the best products required by the customer. At this time, the rolling coil is subjected to a correction process through a skim pass mill device. Hereinafter, a description of a general skin pass mill apparatus and a process will be omitted, and a correction apparatus and a correction method will be described focusing on the features of the present invention.

The coils wound in hot rolling are assembled to a payoff reel 1 and fed to a stand 4 through a pinch roll 2 and a straight roll 3 to correct (or correct) ), Passes through the deflector roll 6 and is rewound on the tension reel 7, cuts the material S into cutters 5 according to the order quantity of the customer, do.

The stand 4 includes upper and lower work rolls 10 and an upper and lower work rolls 10 installed on the upper and lower sides of the work S to correct the shape of the work S, And the upper and lower backup rolls 20 that are disposed to abut the lower portions of the work rolls 10 and provide predetermined downward force to the work rolls 10, respectively.

Then, the stand 4 performs the straightening rolling so as to plastic deform the material S to less than several percent, correct the shape distortion of the material S, and remove the residual stress of the material S.

However, if the work roll 10 is contaminated by dirt such as flywheel and dust in the atmosphere during the calendering and rolling process, the contaminated foreign matter is printed on the surface of the material S, and fatal surface defects are generated in the product do. Or if a defect occurs in the work roll 10 due to foreign matter, a defect of the work roll 10 may be printed on the work S to cause surface defects.

Likewise, even if the backup roll 20 is contaminated, the foreign matter of the backup roll 20 may be transferred to the work roll 10, which may lead to the same problem.

Therefore, in order to solve such a problem, the worker must manually work the work roll 10 or the backup roll 20 to smooth the roll surface.

Also, in order to obtain a high-quality product, it is necessary to remove minute flaws formed on the surface of the product even after the calibrating operation, and to remove foreign matter on both ends of the product.

A correction device according to an embodiment of the present invention includes a roll surface foreign matter removal device 100 for polishing a work roll 10 or a backup roll 20 to remove foreign matter adhering to the roll surface, A material surface scratch removal device 200 for removing scratches present on the surface of the material S and a material edge remover 300 for removing foreign matter adhering to both edges of the material S.

The roll surface foreign material removing apparatus 100 may be installed above the entry table 30 located on the front side of the stand 4 in the material entry direction D. It is not necessary to provide a separate space for installing the roll surface foreign material removing apparatus 100 according to the embodiment of the present invention since it is installed on the entry table 30 installed in the existing facility.

The material surface scratch removing apparatus 200 is installed on the first guide table 40 positioned between the cutter 5 and the deflector roll 6 and the material edge scratch removing apparatus 300 is disposed on the first guide table 40 And the deflector roll 6, as shown in FIG. Since it is installed on the upper part of the first and second guide tables 40 and 50 installed in the existing facility, in order to install the material surface scratch removing apparatus 200 and the material edge scrubbing apparatus 300 according to the present embodiment, There is no need to provide space.

The roll surface foreign material removing device 100, the material surface scratch removing device 200 and the material edge foreign material removing device 300 are provided in this order in the material entering direction D, The surfaces of the rolls 10 and 20 are polished so that defects do not occur and the surface of the material S existing after the calibrating operation is finished is removed and finally the foreign substances existing at the edges of the material S are removed The surface of the material (S) can be cleaned.

Next, a roll surface foreign material removal apparatus 100 according to an embodiment of the present invention will be described with reference to FIG. 2 to FIG.

FIG. 2 is a perspective view showing a state in which the roll surface foreign matter removal apparatus 100 according to the embodiment of the present invention is viewed from the direction opposite to the direction of entering the material S, and FIG. 3 is an exploded perspective view of FIG. And FIG. 4 is a perspective view showing a state in which the roll surface foreign matter removing apparatus 100 according to the embodiment of the present invention is viewed from the direction D of entering the work.

The apparatus 100 for removing a surface of a roll according to an embodiment of the present invention includes a polishing section 103 for polishing a roll surface, a polishing unit 101 for moving the polishing section 103 to the left and right, And a base unit 106 for supporting the polishing unit 101 and moving the polishing unit 101 up and down.

The polishing unit 103 includes a polishing wheel 141 that is capable of removing foreign matter and the like by polishing the surface of the roll by rotating while contacting the surface of the roll. The polishing wheel 141 can select a material that does not damage the surface of the roll while removing foreign substances on the surface of the roll. It is also possible to use a cover made of a polishing material. If the cover is worn, it is economical to replace the cover only to restart the foreign matter removal process on the roll surface.

The grinding wheel 141 can rotate with the rotation of the grinding wheel drive shaft 142. The grinding wheel drive shaft 142 is connected to the grinding wheel driving motor 143 and can be rotated by driving the grinding wheel driving motor 143. The grinding wheel drive motor 143 and the grinding wheel drive shaft 142 may be coupled to each other by a pulley and a belt to transmit rotational motion. Here, the pulley and the belt are merely an example of a structure for transmitting rotational power, and the grinding wheel drive motor 143 and the grinding wheel drive shaft 142 can be connected to each other in various rotational power transmission structures. In one example, the grinding wheel drive motor 143 and the grinding wheel drive shaft 142 may be connected to a gear assembly to transmit rotational motion.

Although the drawing shows that the abrasive wheel drive shaft 142 is disposed in the same direction as the axial direction of the work roll 10 or the backup roll 20, the abrasive wheel drive shaft 142 is disposed in a different direction. As an example, the grinding wheel drive shaft 142 may be provided perpendicular to the axes 11, 21 of the roll.

The polishing unit 103 may include a polishing unit base 130 coupled to the polishing unit 101 and a polishing unit frame 140 coupled to the polishing unit base 130 so as to move forward and backward. The polishing section frame 140 may be provided so as to be movable forward and backward in a direction (hereinafter referred to as " second direction ") toward the roll surface. Although the second direction in the drawing is shown as being horizontal to the ground, it may alternatively include a direction tilted at various angles relative to the ground, as far as it is directed towards the roll surface.

The polishing section frame 140 can support the polishing wheel 141, the polishing wheel driving shaft 142, and the polishing wheel driving motor 143. In one example, the polishing section frame 140 may rotatably support both ends of the polishing wheel drive shaft 142.

The polishing unit frame 140 is supported on the polishing unit base 130 and can reciprocally translate in the second direction. The pressing drive nut 144 provided on the polishing unit frame 140 can be moved forward and backward in accordance with the rotation of the pressing drive shaft 131 provided on the polishing unit base 130. [ The pressure drive shaft 131 may be a screw shaft and the pressure drive nut 144 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely an example of a structure that enables translational motion, and the polishing unit frame 140 and the polishing unit base 130 may be combined with various other translational motion power structures. For example, when the worm gear installed on the polishing unit frame 140 moves along a worm installed on the polishing unit base 130, or when the cylinder provided on the polishing unit base 130 varies in length, the polishing unit frame 140 Can be moved.

And the polishing unit base 130 can guide the polishing unit frame 140 in the second direction. For example, the polishing unit frame 140 may be provided with a pressurizing guide rail 145, and the polishing unit base 130 may be provided with a pressurizing guide protrusion 133. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, a pressing guide protrusion 133 may be provided on the polishing unit frame 140, and a pressing guide rail 145 may be provided on the polishing unit base 130. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit frame 140 may move along a rail provided on the polishing unit base 130.

The polishing unit base 130 can support a pressing driving shaft 131 for moving the polishing section frame 140 in the second direction and a pressing driving motor 132 for rotating the pressing driving shaft 131. For example, the polishing unit base 130 can rotatably support both ends of the pressurizing drive shaft 131.

The polishing unit 103 can be provided so as to be movable in the direction of the central axes 11 and 21 of the working roll 10 or backup roll 20 (hereinafter referred to as " third direction "). To this end, the polishing unit base 130 is supported by the polishing unit 101 and can reciprocate in the third direction.

For example, the third direction driving nut 134 installed on the polishing unit base 130 can move left and right according to the rotation of the third direction driving shaft 121 installed in the polishing unit 101. The third direction drive shaft 121 may be a screw shaft and the third direction drive nut 134 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely examples of a structure capable of translational motion, and the polishing unit base 130 and the polishing unit 101 can be combined with various other translational motion power structures. For example, when the worm gear installed on the polishing unit base 130 moves along a worm installed on the polishing unit 101, or when the cylinder provided on the polishing unit 101 is variable in length and moves the polishing unit frame 140 .

And the polishing unit 101 can guide the polishing unit base 130 in the third direction. For example, a third direction guide rail 135 may be provided on the polishing unit base 130, and a third direction guide protrusion 124 may be provided on the polishing unit 101. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the third direction guide protrusion 124 may be provided on the polishing unit base 130, and the third direction guide rail 135 may be installed on the polishing unit 101. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit base 130 can move along a rail provided on the polishing unit 101.

On the other hand, a pair of the polishing units 103 may be provided in the vertical direction. The work roll 10 and the backup roll 20 are provided in pairs on the upper and lower sides of the work S to pressurize the work S in the vertical direction. Therefore, when the polishing unit 103 is provided in the number corresponding to each of the work rolls 10 or the backup rolls 20, the work roll 10 or the backup rolls It is possible to improve the working efficiency in that the polishing cloth 20 can be all polished.

The pair of polishing portions 103 may be arranged symmetrically with respect to each other. In addition, the third direction driving shaft 121 and the third direction guide protrusion 124 provided in the polishing unit 101 are also provided in a pair, and can be arranged in the vertical direction.

The polishing unit 101 includes a polishing unit base 110 supported by the base unit 106 and movable in a vertical direction (hereinafter referred to as " first direction "), And a polishing unit frame 120 provided to be movable in a second direction.

The polishing unit frame 120 supports a third direction driving shaft 121 that reciprocates the polishing unit base 130 in the third direction and a third direction driving motor 122 that rotates the third direction driving shaft 121 . In one example, the polishing unit frame 120 can rotatably support both ends of the polishing wheel drive shaft 142.

The polishing unit frame 120 may be provided to be movable in the second direction. To this end, the roll surface foreign material removing apparatus 100 may further include a forward / backward driving portion 105 for moving the polishing unit frame 120 forward and backward.

The advancing / retracting driving unit 105 includes a forward / backward driving frame 150 installed on the polishing unit base 110, a second direction driving shaft 151 for transmitting power to the polishing unit frame 120, a second direction driving shaft 151, And a second direction drive motor 152 for supplying power to the second direction driving motor 152. [

The polishing unit frame 120 is supported on the polishing unit base 110 and can reciprocate in a second direction. For example, the second direction driving nut 125 installed on the polishing unit frame 120 can reciprocate in the second direction in accordance with the rotation of the second direction driving shaft 151 installed in the advancing / retreating driving unit 105. The second direction drive shaft 151 may be a screw shaft and the second direction drive nut 125 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely an example of a structure capable of translational motion, and the polishing unit frame 140 and the advance and retreat drive unit 105 can be combined with various other translational motion power structures. For example, when the worm gear installed on the polishing unit frame 140 moves along a worm installed on the advancing / retreating drive unit 105 or the cylinder provided on the advancing / retreating driving unit 105 moves the polishing unit frame 140 .

The advance / retreat drive unit 105 may further include a second direction auxiliary motor 153 that can provide power to the second direction drive shaft 151 in an emergency. The second direction auxiliary motor 153 and the second direction driving shaft 151 are coupled to each other by a pulley and a belt to transmit rotational motion. Here, the pulley and the belt are merely examples of a structure for transmitting rotational power, and the second direction auxiliary motor 153 and the second direction driving shaft 151 may be connected to each other by various rotational power transmission structures. For example, the second direction auxiliary motor 153 and the second direction driving shaft 151 may be connected to each other through a gear assembly to transmit rotational motion.

When the second direction auxiliary motor 153 is in an emergency state, the second direction driving motor 152 of the advanced / retractive driving unit 105 may not operate or may malfunction. The advance and retreat drive unit 105 operates the second direction drive motor 152 to rotate the second direction drive shaft 151 so that the polishing unit frame 120 and the polishing unit 103 coupled thereto are advanced toward the roll surface Or retract. The advance and retreat drive section 105 should be operated to advance the polishing unit frame 120 so that the polishing wheel 141 can contact the roll surface at the time of polishing the roll surface, 141 is moved backward from the roll surface so that the polishing portion 103 can move in the up and down direction (the "first direction" in the drawing).

If the drive motor malfunctions when the roll surface polishing operation is completed and the workpiece S has to go into between the work rolls 10, until the operator approaches the second direction drive motor 152 and completes the repair There arises a problem that the calibration rolling process can not be performed, which may deteriorate the productivity. The second direction auxiliary motor 153 is significant in that it can operate in such an emergency state and can bring the material S into a ready state to be able to roll the material S by retracting the polishing unit frame 120 from the roll surface.

The polishing unit base 110 can guide the polishing unit frame 120 in the second direction. For example, a second direction guide rail 112 may be provided on the polishing unit base 110, and a second direction guide protrusion 123 may be provided on the polishing unit frame 120. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the second direction guide protrusion 123 may be installed on the polishing unit base 110 and the second direction guide rail 112 may be installed on the polishing unit frame 120. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit base 110 can move along a rail provided on the polishing unit frame 120.

The polishing unit base 110 may be provided to support both sides of the polishing unit frame 120. At this time, the second direction guide protrusion 123 may be provided on both sides of the polishing unit frame 120, and the second direction guide rail 112 may be provided on both sides of the polishing unit base 110 .

The base unit 106 includes a support portion 160 for supporting the polishing unit base 110, a first direction drive shaft 161 for transmitting a drive force to the polishing unit base 110, And a first direction guide protrusion 162 for guiding the movement of the polishing unit base 110. The first direction guide protrusion 162 is provided with a first direction guide protrusion 162 for guiding the movement of the polishing unit base 110. [

The polishing unit base 110 is supported on the base unit 106 and can reciprocate in a first direction. For example, the first direction driving nut 113 installed on the polishing unit base 110 can reciprocate in the first direction in accordance with the rotation of the first direction driving shaft 161 installed in the base unit 106. The first direction drive shaft 161 may be a screw shaft, and the first direction drive nut 113 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely an example of a structure capable of translational motion, and the polishing unit base 110 and the base unit 106 can be combined with various other translational motion power structures. The worm gear installed on the polishing unit base 110 moves along a worm installed on the base unit 106 or the cylinder provided on the base unit 106 moves to move the polishing unit base 110 .

The base unit 106 may further include a first direction auxiliary motor 165 capable of providing power to the first direction drive shaft 161 in an emergency. The first direction auxiliary motor 165 and the first direction driving shaft 161 are coupled to each other by a pulley and a belt to transmit rotational motion. Here, the pulley and the belt are merely an example of a structure for transmitting rotational power, and the drive motor and the first direction drive shaft 161 may be connected to each other by various rotational power transmission structures. For example, the first direction auxiliary motor 165 and the first direction driving shaft 161 may be connected to each other through a gear assembly to transmit rotational motion.

When the first direction auxiliary motor 165 is operating, the first direction driving motor 164 of the base unit 106 may not operate or may malfunction. The base unit 106 rotates the first direction driving shaft 161 by operating the first direction driving motor 164 so that the polishing unit base 110 and the polishing unit 103 coupled thereto are rotated And can be moved upward or downward from the pass line. The base unit 106 must be operated to move the polishing unit base 110 in the first direction so that the polishing wheel 141 can be positioned at the roll height at the time of polishing the roll surface, The polishing unit 101 should be operated to move the polishing unit base 110 in the first direction so as to be able to escape from the line through which the workpiece S passes.

If the driving motor is erroneously operated when the roll surface polishing operation is completed and the workpiece S is to be inserted into the work rolls 10, the operator approaches the first direction driving motor 164 There arises a problem that the calibration rolling process can not be performed, which may deteriorate the productivity. The first direction auxiliary motor 165 operates in such an emergency state that the polishing unit 101 can be moved out of the line passing through the workpiece S to make the workpiece S ready to be rolled The meaning is great.

The base unit 106 can guide the polishing unit base 110 in the first direction. For example, the first direction guide rail 111 may be provided on the polishing unit base 110, and the first direction guide protrusion 162 may be provided on the base unit 106. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the first direction guide protrusion 162 may be installed on the polishing unit base 110 and the first direction guide rail 111 may be installed on the base unit 106. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit base 110 can move along a rail provided on the base unit 106. [

The support portions 160 may be provided in pairs in the widthwise direction of the work S. At this time, it is preferable that a space is provided between the pair of supports 160 so that the material S can pass.

The first direction driving shaft 161 may be provided in a pair so as to engage with the first direction driving nuts 113 provided on both sides of the polishing unit base 110. For example, the support portion 160 may rotatably support both ends of the first direction drive shaft 161. [

The pair of first direction drive shafts 161 can be simultaneously rotated by one first direction drive motor 164. For example, the pair of first direction drive shafts 161 may be connected by a connection shaft 163. Meanwhile, the first direction driving shaft 161 and the connecting shaft 163 may be coupled to each other by a worm and a worm wheel to transmit rotational motions in different axial directions. Here, the worm and the worm wheel are merely examples of a structure for transmitting rotational power, and the first direction drive shaft 161 and the connection shaft 163 can be connected to each other by various rotational power transmission structures. In one example, the grinding wheel drive motor 143 and the grinding wheel drive shaft 142 may be connected to a bevel gear assembly to transmit rotational motion.

One end of the connection shaft 163 may be connected to the first direction drive shaft 161 directly connected to the first direction drive motor 164 or rotated by the first direction drive motor 164.

The base unit 106 may further include a speed reducer 166 disposed between the first direction driving motor 164 and the first direction driving shaft 161 or between the first direction driving shaft 161 and the connecting shaft 163 have. The first direction drive motor 164 requires a large output because the heavy-weight polishing unit 101 must be moved in the first direction. Therefore, when the decelerator 166 with a high reduction ratio is used, the moving speed of the polishing unit 101 is slow, but a large output can be obtained. On the other hand, the speed reducer 166 can have a function of switching the rotation axis direction.

The base unit 106 may further include a braking unit 167. The braking unit 167 may be provided at an end of the first direction drive shaft 161. The braking unit 167 may be configured to stop the rotation of the first direction drive shaft 161 in an emergency. The first direction driving shaft 161 can be restrained while allowing the rotation of the first direction driving shaft 161 during normal operation. For example, a brake pad or the like can be used.

Alternatively, the braking unit 167 may restrict rotation of the first direction drive shaft 161 to maintain the state in which the polishing unit 101 stops. There is a possibility that the first direction drive shaft 161 may rotate a little even when the first direction drive motor 164 of the base unit 106 does not operate because the polishing unit 101 is considerably heavy. Therefore, the braking unit 167 can keep the first direction drive shaft 161 in a stopped state so that the grinding wheel 141 is accurately positioned on the surface of the roll to be polished. For example, a ratchet wheel and a pole (Pawl) or a positive clutch (Positive Clutch) can be used to reverse.

5 to 8 illustrate a working state of the roll surface remover 100 according to an embodiment of the present invention. Fig. 5 shows a waiting state of operation, FIG. 7 shows a state in which the polishing unit 101 advances, and FIG. 8 shows a state in which the polishing unit 103 advances.

5, the roll surface foreign matter removal apparatus 100 according to the embodiment of the present invention is disposed in the upper part of the line through which the material S passes during the calendering and rolling operation of the material S, . More specifically, at the top of the entry table 30. The entry table 30 can support the work S in front of the work roll 10.

Fig. 6 shows a state in which the roll surface de-stripping apparatus 100 according to the embodiment of the present invention starts operation when the calendering of the workpiece S is stopped and the work roll 10 needs to be polished . 6, the first direction driving motor 164 of the base unit 106 operates to rotate the first direction driving shaft 161 so that the polishing unit 101 connected to the first direction driving nut 113 is lowered And a pair of polishing wheels 141 provided on the upper and lower sides move to a vertical position corresponding to the pair of work rolls 10, respectively. On the other hand, when the polishing unit 101 is positioned on the line passing the workpiece S, the base unit 106 can stop the rotation of the first direction drive shaft 161 or stop the rotation of the first direction drive shaft 161 by operating the braking unit 167 have.

7, the second direction driving motor 152 of the advancing / retreating driving unit 105 is operated to rotate the second direction driving shaft 151 so that the polishing unit frame 120 connected to the second direction driving nut 125 And the polishing portion 103 is brought close to the work roll 10.

8, the pressing driving motor 132 of the polishing unit base 130 operates to rotate the pressing driving shaft 131 so that the polishing sub frame 140 connected to the pressing driving nut 144 advances, (141) is brought into contact with the work roll (10).

On the other hand, the efficiency of the polishing process can be improved by using the two-step process of advancing by the advance / retreat drive unit 105 shown in FIG. 7 and advancing by the polishing unit base 130 shown in FIG. The advance and retreat drive unit 105 can bring the polishing unit 103 close to the work roll 10 at a high speed. And the polishing unit base 130 may cause the polishing wheel 141 to move slowly but precisely to contact the work roll 10. [ The polishing wheel 141 may be impacted and broken by the work roll 10 when the polishing wheel 141 moves inconsiderably.

After the polishing wheel 141 contacts the working roll 10, the polishing wheel 141 rotates to start the polishing work of the working roll. Although not shown, the third direction driving motor 122 of the polishing unit frame 120 is operated to rotate the third direction driving shaft 121 so that the polishing unit base 130 connected to the third direction driving nut 134 Can move in the third direction. The polishing wheel 141 connected to the polishing unit base 130 can polish the front surface of the work roll 10 while moving in the longitudinal direction of the rotating shaft of the working roll 10.

In addition, the roll surface foreign matter removal apparatus 100 according to the embodiment of the present invention can be provided to control the reduction load ratio of the polishing wheel 141. The polishing operation can be performed in a state in which the work roll 10 is pressurized to a constant load by controlling the pressing load ratio of the polishing wheel 141 to be constant. Therefore, it is possible to maintain the even surface of the work roll 10 to improve the surface quality of the work S when the work roll 10 rolls the work S.

Next, an apparatus 200 for removing surface defects according to an embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG. FIG. 9 is a perspective view showing a device 200 for removing a surface defect according to an embodiment of the present invention when viewed from the direction of entry of a material S. FIG. FIG.

The apparatus 200 for removing surface scratches according to an embodiment of the present invention includes a polishing unit 201 for polishing a surface of a work S to remove scratches, A second direction transfer frame 203 for transferring the first direction transfer frame 202 back and forth and a second direction transfer frame 203 for supporting the first direction transfer frame 202 in the left and right directions And a support portion 205 for supporting the third direction transfer frame 204. The third direction transfer frame 204 is movable in the first direction.

The polishing unit 201 includes a polishing wheel 211 capable of polishing the surface of the work S by rotating while contacting the surface of the work S to remove scratches. The polishing wheel 211 can select a material that does not damage the surface of the work S while removing flaws on the surface of the work S. It is also possible to use a cover made of a polishing material. If the cover is worn, it is economical to replace the cover only to resume the scratch removal process on the surface of the material (S).

The grinding wheel 211 can rotate with the rotation of the grinding wheel drive shaft 212. The grinding wheel drive shaft 212 is connected to the grinding wheel driving motor 213 and can be rotated by driving the grinding wheel driving motor 213. The grinding wheel drive motor 213 and the grinding wheel drive shaft 212 may be coupled to each other by a pulley and a belt to transmit rotational motion. Here, the pulley and the belt are merely an example of a structure for transmitting rotational power, and the polishing wheel driving motor 213 and the polishing wheel driving shaft 212 may be connected to each other by various other rotational power transmitting structures. In one example, the grinding wheel drive motor 213 and the grinding wheel drive shaft 212 may be connected to a gear assembly to transmit rotational motion.

Although the drawing shows that the polishing wheel drive shaft 212 is arranged vertically in the out-of-plane direction of the work S, it includes those arranged in other directions. In one example, the polishing wheel drive shaft 212 may be disposed perpendicular to the out-of-plane direction of the workpiece S (parallel to the in-plane direction of the workpiece S).

The polishing unit 201 may further include a polishing unit base 210. The polishing unit base 210 can support the polishing wheel 211, the polishing wheel driving shaft 212, and the polishing wheel driving motor 213. For example, the polishing section base 210 may rotatably support both ends of the polishing wheel drive shaft 212. [

The polishing portion 201 may be provided so as to be movable forward and backward in a direction (hereinafter referred to as " first direction ") toward the surface of the work S. The polishing unit base 210 is supported by the first direction transfer frame 202 and can reciprocate in a first direction.

The first direction transfer frame 202 includes a first direction drive shaft 221 for transmitting a driving force to the first direction base 220 and the polishing unit 201 and a second direction driving shaft 221 for transmitting a driving force to the first direction driving shaft 221 in a first direction And may include a driving motor 222.

The first direction base 220 can support the first direction driving shaft 221 and the first direction driving motor 222. For example, the first direction base 220 may rotatably support both ends of the first direction drive shaft 221.

The polishing unit 201 can be raised and lowered according to the rotation of the first direction driving shaft 221 installed in the first direction base 220, have. The first direction drive shaft 221 may be a screw shaft and the first direction drive nut 214 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely an example of a structure capable of translational motion, and the polishing unit base 210 and the first direction base 220 can be combined with various other translational motion power structures. For example, when the worm gear installed on the polishing unit base 210 moves along a worm installed on the first direction base 220 or the cylinder installed on the first direction base 220 changes its length, Can be moved.

The first direction transfer frame 202 can guide the polishing unit base 210 in the first direction. For example, a first direction guide rail 215 may be provided on the polishing unit base 210, and a first direction guide protrusion 223 may be provided on the first direction base 220. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the first direction guide protrusion 223 may be installed on the polishing unit base 210 and the first direction guide rail 215 may be installed on the first direction base 220. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit base 210 may move along a rail provided on the first direction base 220.

The polishing unit 201 may be provided so as to be movable in the longitudinal direction of the work S (hereinafter referred to as " second direction "). The first direction transfer frame 202 is supported by the second direction transfer frame 203 and can reciprocally translate in the second direction.

The second directional transfer frame 203 is connected to the second directional drive shaft 231 and the second directional drive shaft 231 for transmitting driving force to the second directional base 230 and the first directional transfer frame 202 And a second direction drive motor 232.

The second direction base 230 can support the second direction driving shaft 231 and the second direction driving motor 232. For example, the second direction base 230 may rotatably support both ends of the second direction drive shaft 231.

The first direction transfer frame 202 is rotatably supported by the second direction driving shaft 231 installed in the second direction base 230 such that the second direction driving nut 225 installed on the first direction base 220 Can be moved. The second direction drive shaft 231 may be a screw shaft and the second direction drive nut 225 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely examples of a structure capable of translational movement, and the first direction base 220 and the second direction base 230 may be combined with various other translational motion power structures. For example, when the worm gear installed in the first direction base 220 moves along a worm installed in the second direction base 230 or the cylinder installed in the second direction base 230 changes in length, (220).

The second direction base 230 can guide the first direction base 220 in the second direction. For example, a second direction guide rail 233 may be provided on the second direction base 240, and a second direction guide protrusion 224 may be provided on the first direction base 220. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the second direction guide protrusion 224 may be installed on the second direction base 230, and the second direction guide rail 233 may be installed on the first direction base 220. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the first direction base 220 can move along a rail provided on the second direction base 230.

The polishing unit 201 may be provided so as to be movable in the width direction of the work S (hereinafter referred to as " third direction "). The second direction transfer frame 203 is supported by the third direction transfer frame 204 and can reciprocally translate in the second direction.

The third directional transfer frame 204 is connected to the third directional drive shaft 241 and the third directional drive shaft 241 for transmitting driving force to the third directional base 240 and the second directional transfer frame 203 And a third direction driving motor 242.

The third direction base 240 can support the third direction driving shaft 241 and the third direction driving motor 242. For example, the third direction base 240 may rotatably support both ends of the third direction drive shaft 241.

The second direction transfer frame 203 is rotatably supported by the third direction driving shaft 241 provided on the third direction base 240 and the third direction driving nut 235 mounted on the second direction base 230 Can be moved. The third direction drive shaft 241 may be a screw shaft and the third direction drive nut 235 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely an example of a structure that enables translational motion. The second direction base 230 and the third direction base 240 may be combined with various other translational motion power structures. For example, when the worm gear installed in the second direction base 230 moves along a worm installed in the third direction base 240 or the cylinder installed in the third direction base 240 changes in length, (230).

And the third direction base 240 can guide the second direction base 230 in the third direction. For example, a third direction guide rail 234 may be provided on the second direction base 240, and a third direction guide protrusion 243 may be provided on the third direction base 240. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the third direction guide rail 234 may be installed on the third direction base 240, and the third direction guide protrusion 243 may be provided on the second direction base 230. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the second direction base 230 can move along a rail provided on the third direction base 240.

The support portions 205 may be provided in pairs in the widthwise direction of the work S. At this time, it is preferable to provide a space between the pair of supports 205 so that the material S can pass through.

Referring to FIG. 10, the apparatus 200 for removing surface defects according to an embodiment of the present invention can move not only in the longitudinal direction of the work S but also in a width direction of the work S, .

Although not shown in the drawing, the apparatus for removing surface scratches 200 according to the embodiment of the present invention may include a sensor or a camera capable of inspecting the surface of a material S to check whether a scratch or contaminant is present have.

The material surface scratch removal device 220 moves the grinding wheel 211 to a position where a scratch is found when the sensor or the camera finds a scratch. The polishing unit 201 can move in the second direction and the third direction by the operation of the second direction transfer frame 203 and the third direction transfer frame 204 and can move to the vertical position corresponding to the position where the scratch is found have.

For example, the third direction driving motor 242 of the third direction transfer frame 204 is operated to rotate the third direction driving shaft 241 so that the second direction base 230 connected to the third direction driving nut 235, Can be moved to the left or right.

The second direction driving motor 232 of the second direction transfer frame 204 is operated to rotate the second direction driving shaft 231 so that the first direction base 220 connected to the second direction driving nut 225 is advanced Or backward.

The first direction driving motor 222 of the first direction transfer frame 202 is operated to rotate the first direction driving shaft 221 so that the polishing unit base 210 connected to the first direction driving nut 214 is lowered The abrasive wheel 211 contacts the work roll 10.

Finally, the grinding wheel driving motor 213 operates to rotate the grinding wheel driving shaft 212 so that the grinding wheel 211 rotates to remove scratches or foreign matter on the surface of the work S.

The apparatus 200 for removing surface material on the work surface according to the embodiment of the present invention may be provided so as to control the reduction load ratio of the polishing wheel 211. The polishing work can be carried out while the material S is pressed to a constant load by controlling the pressing load ratio of the polishing wheel 211 to be constant. Therefore, it is possible to maintain the even surface of the material S and improve the product quality.

Next, the material edge foreign material removing apparatus 300 according to the embodiment of the present invention will be described with reference to FIGS. 11 and 12. FIG. 11 is a perspective view showing a material edge foreign material removing apparatus 300 according to an embodiment of the present invention as viewed in the material entering direction D and FIG. Sectional view taken along the line XII-XII '.

The apparatus for removing edge foreign materials 300 according to the embodiment of the present invention includes a polishing unit 302 for polishing the edges of the work S to remove impurities, a polishing unit 301 for supporting the polishing unit 302, And a forward / backward driving unit 303 for moving the polishing unit 301 in the left and right directions.

The polishing unit 302 includes a polishing wheel 321 that can remove foreign matters on the edges of the work S by rotating while contacting the edges of the work S. The polishing wheel 321 can be made of a material which does not damage the edges of the material S while removing the foreign substances at both end edges of the material S. [ It is also possible to use a cover made of a polishing material. If the cover is worn, it is economical to replace the cover only to restart the foreign material removing process at both ends of the material (S).

The grinding wheel 321 is connected to the grinding wheel driving motor 322 and can be rotated by driving the grinding wheel driving motor 322. The grinding wheel drive motor 322 and the grinding wheel 321 may be coupled to each other by a pulley and a belt to transmit rotational motion. Here, the pulley and the belt are merely an example of a structure for transmitting rotational power, and the grinding wheel driving motor 322 and the grinding wheel 321 can be connected to each other in various other rotational power transmitting structures. In one example, the grinding wheel drive motor 322 and the grinding wheel 321 may be connected to a gear assembly to transmit rotational motion.

Although the drawing shows that the driving shaft of the polishing wheel 321 is disposed in the width direction of the work S, it includes those arranged in other directions. For example, the polishing wheel 321 may be disposed in a direction deviating from the width direction of the work S.

The polishing unit 302 may further include a polishing unit base 320. The polishing unit base 320 can support the polishing wheel 321 and the polishing wheel driving motor 322.

The polishing unit 301 can be coupled to be movable in a direction to support the polishing portion 302 and to enter the advancement and retraction drive portion 303 and the edge of the workpiece S (hereinafter referred to as " the third direction ") .

The advance and retreat drive unit 303 includes a third direction drive shaft 331 for transmitting drive force to the advancing / retreating base 330 and the polishing unit 301, a third direction drive motor 332 for providing power to the third direction drive shaft 331, . ≪ / RTI >

The advancing / retreating base 330 can support the third direction drive shaft 331 and the third direction drive motor 332. For example, the advancing / retreating base 330 may rotatably support both ends of the third direction drive shaft 331.

The polishing unit 301 can be moved to the left and right in accordance with the rotation of the third direction driving shaft 331 provided on the advancing / retreating base 330, and the third direction driving nut 312 provided on the polishing unit base 310 have. The third direction drive shaft 331 may be a screw shaft and the third direction drive nut 312 may be a nut or a ball screw nut engaged therewith. Here, the nut and the screw shaft are merely an example of a structure capable of translational motion, and the polishing unit base 310 and the retractable base 330 can be combined with various other translational motion power structures. The worm gear installed on the polishing unit base 310 moves along the worm installed on the retractable base 330 or the cylinder provided on the retractable base 330 moves to move the polishing unit base 310 .

The advance / retreat drive unit 303 can guide the polishing unit base 310 in the third direction. The third direction guide rails 311 may be provided on the polishing unit base 310 and the third direction guide protrusions 333 may be provided on the retention base 330. [ The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the third direction guide protrusion 333 may be installed on the polishing unit base 310 and the third direction guide rail 311 may be installed on the advance and retreat base 330. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit base 310 can move along a rail provided on the advancing / retreating base 330.

Although not shown in the drawings, the advancing and retracting driving portion 303 can be supported by a supporting portion (not shown). In one example, the support portions may be provided in pairs in the width direction of the workpiece S apart from each other. At this time, it is preferable to provide a space between the pair of supports so that the material S can pass through.

The material edge removing apparatus 300 according to the embodiment of the present invention is configured such that the polishing unit 301 moves in the third direction by driving the advance and retreat driving unit 303 and the polishing unit 302 moves in the third direction independently And may be provided movably.

The polishing unit 301 may include a polishing part support frame 313 connected to the polishing unit base 310 to support the polishing part base 320. [ The polishing unit base 320 may be provided on the polishing unit support frame 313 so as to be movable in the third direction.

The polishing unit 301 can guide the polishing portion 302 in the third direction. For example, a polishing unit guide rail 323 may be provided on the polishing unit base 320, and a polishing unit guide protrusion 314 may be provided on the polishing unit support frame 313. FIG. The guide rails and the guide protrusions can be classified according to their shapes. The one including the shape to be recessed is referred to as a guide rail, and the one including the protrusion inserted into the recessed shape of the guide rail is referred to as a guide projection.

On the other hand, the guide rails and the guide protrusions can be installed at different positions. That is, the polishing section guide rail 323 may be provided on the polishing section support frame 313, and the polishing section guide protrusion 314 may be provided on the polishing section base 320. Here, the guide rails and the guide projections are merely an example of a structure capable of guiding translational movement. For example, a wheel installed on the polishing unit base 320 may move along a rail provided on the polishing part support frame 313. [

The polishing unit 301 may further include an impact absorbing portion 315 interposed between the polishing portion 302 and the polishing portion support frame 313. [ Referring to FIG. 12, one end of the impact absorbing portion 315 may be supported by the support portion supporting frame 313, and the other end may support the support portion 320 of the polishing portion.

As the material (S) proceeds, the edges of the material (S) do not move constantly. The width of the material S in the width direction may be different and the material S may be placed at a position which is misaligned in the width direction.

The polishing wheel 321 rotates in contact with the edge of the work S. At this time, when the work S moves in the direction away from the grinding wheel 321, a proper pressing load is not applied to the work S, and foreign matter may not be properly removed. When the workpiece S moves in the direction approaching the grinding wheel 321, a large pressure is applied to the grinding wheel 321 and scratches the edge of the workpiece S, May be caused.

The impact absorbing portion 315 is provided to absorb the impact transmitted through the polishing portion 302 while supporting the end portion of the polishing portion 302. The shock absorbing portion 315 may be provided as an elastic member. For example, a coil spring or the like can be used. Alternatively, the shock absorbing portion 315 may use fluid. For example, air pressure can be used to absorb impact.

On the other hand, the impact absorbing portion 315 can apply an elastic force to the grinding wheel 321. Therefore, even when the workpiece S moves in a direction away from the grinding wheel 321, it is possible to pressurize the edges of the workpiece S to properly remove foreign matter.

The material edge removing apparatus 300 according to the embodiment of the present invention can be provided to control the reduction load ratio of the polishing wheel 321. It is possible to carry out the polishing operation while the corner of the work S is pressed to a constant load by controlling the pressing load ratio of the polishing wheel 321 to be constant.

The material edge removing apparatus 300 according to the embodiment of the present invention may further include a jetting unit 304 for jetting air or a cleaning liquid to the work S. The jetting section 304 can jet air or cleaning liquid through a plurality of nozzles arranged in the width direction of the work S.

Or both a nozzle capable of jetting air and a nozzle capable of jetting a cleaning liquid. It is possible to remove water, contaminants and the like present on the surface of the material S by spraying air through the air nozzle after cleaning the surface of the material S by spraying the cleaning liquid through the cleaning liquid nozzle.

On the other hand, the nozzles of the jetting section 304 can be arranged in the form of reversing the alphabet " V " in the width direction of the work S in the entry direction D of the work S. That is, the nozzles located at the center in the width direction of the work S are disposed forward in the entry direction D of the work S, and the nozzles move toward the entry direction of the work S toward the edges of the work S, (D).

This arrangement allows the contaminants or the like removed by the jetting section 304 to be guided to the edge of the material S. If the nozzles of the jetting section 304 are arranged in the alphabetical " V " shape in the entry direction D of the work S, contaminants or the like removed by the jetting section 304 It is not appropriate because it can be assembled.

The material edge removing apparatus 300 according to the embodiment of the present invention may further include a material pressing unit 305. The material pressing portion 305 may include a means for contacting the work S and allowing the work S to proceed and a means for pressing it. For example, it may include a guide roller 351 and a cylinder part 350.

The cylinder 350 can press the guide roller 351 and the guide roller 351 can press the center of the work S to keep the height of the work S constant. The guide rollers 351 are provided so as to be capable of rolling motion and may not interfere with the advance of the material S.

On the other hand, the cylinder portion 351 is only an example of a structure that can change the height of the guide roller 351, and pressure can be applied to the guide roller 351 by using various devices.

The material edge removal apparatus 300 according to an embodiment of the present invention may further include a protector 306. The protector 306 can protect the jetting section 304 from the distal end of the work S.

When the material S is first introduced, the tip of the material S may be curved upward. At this time, when the material S enters the material edge remover 300 in a bent state, an impact is applied to the jetting unit 304 positioned near the line passing the material S, May be damaged. Therefore, the protector 306 may be positioned behind the material edge remover 300, rather than the sprayer 304.

The protector 306 may include a main frame 360 and a jetting section support frame 361 for supporting the jetting section 304. The main frame 360 may include a plane inclined downward in the entry direction D of the work S. Therefore, the tip of the upward curved material S can be guided downward.

The jetting support frame 361 extends to both sides of the main frame 360 to support the jetting section 304 and to protect the jetting section 304 from external impacts.

13 and 14 illustrate a working state of the material edge remover 300 according to the embodiment of the present invention. FIG. 13 shows a standby state of the work, FIG. 14 shows a state Fig.

13, the polishing wheel 321 may be located away from the edge of the edge of the workpiece S in the stand-by state before the workpiece edge remover 300 is activated. In addition, the jetting unit 304 does not eject air or cleaning liquid, and the material pressing unit 305 may be located away from the work S.

Next, the operation of the material edge foreign material removing apparatus 300 will be described with reference to FIG. The cylinder portion 350 of the material pressing portion 305 moves the guide roller 351 downward to apply pressure to the work S. Therefore, both ends of the edge of the material S can maintain a constant height.

The third direction driving motor 332 operates to rotate the third direction driving shaft 331 and the polishing unit base 310 connected to the third direction driving nut 312 moves in the direction of the edge of the work S . The polishing unit 302 connected to the polishing unit base 310 also moves in the direction of the edge of the workpiece S together with the polishing unit 301 so that the polishing wheel 321 comes into contact with the edge of the workpiece S. And the grinding wheel drive motor 9322 operates to rotate the grinding wheel 321 to remove foreign substances present at both ends of the edge of the work S.

Next, the jetting unit 304 can blow out the removed foreign substances by blowing air or the like. Therefore, the surface and the edge of the material S can be kept clean.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, You will understand. Accordingly, the true scope of the invention should be determined only by the appended claims.

1: payoff reel, 2: pinch roll,
3: straight roll, 4: stand,
5: cutter, 6: deflector roll,
7: tension reel, 10: work roll,
20: backup roll, 30: entry table,
40: first guide table, 50: second guide table,
100: roll surface foreign material removing device, 101: polishing unit,
103: a polishing section, 105: a forward / backward driving section,
106: base unit, 110: polishing unit base,
111: first direction guide rail, 112: second direction guide rail,
113: first direction driving nut, 120: polishing unit frame,
121: third direction drive shaft, 122: third direction drive motor,
123: second direction guide projection, 124: third direction guide projection,
125: second direction driving nut, 130: polishing unit base,
131: pressure drive shaft, 132: pressure drive motor,
133: pressing guide projection, 134: third direction driving nut,
135: third direction guide rail, 140: abrasive frame,
141: abrasive wheel, 142: abrasive wheel drive shaft,
143: abrasive wheel drive motor, 144: pressure drive nut,
145: pressure guide rail, 150: advance / retreat drive frame,
151: second direction drive shaft, 152: second direction drive motor,
153: second direction auxiliary motor, 160: support portion,
161: first direction drive shaft, 162: first direction guide projection,
163: connection shaft, 164: first direction driving motor,
165: first direction auxiliary motor, 166: speed reducer,
167:
200: Material surface scratch removal apparatus, 201: Polishing section,
202: a first direction transfer frame, 203: a second direction transfer frame,
204: third direction transfer frame, 205: support portion,
210: polishing base, 211: polishing wheel,
212: abrasive wheel drive shaft, 213: abrasive wheel drive motor,
214: a first direction driving nut, 215: a first direction guide rail,
220: first direction base, 221: first direction drive shaft,
222: a first direction drive motor, 223: a first direction guide projection,
224: second direction guide projection, 225: second direction driving nut,
230: second direction base, 231: second direction drive shaft,
232: second direction drive motor, 233: second direction guide rail,
234: a third direction guide rail, 235: a third direction driving nut,
240: a third direction base, 241: a third direction drive shaft,
242: a third direction driving motor, 243: a third direction guide projection,
300: Material edge removal device, 301: Polishing unit,
302: a polishing section, 303: a forward / backward driving section,
304: jetting section, 305: material pressing section,
306: Protector, 310: Polishing unit base,
311: a third direction guide rail, 312: a third direction driving nut,
313: a polishing section support frame, 314: a polishing section guide projection,
315: shock absorbing part, 320: polishing part base,
321: abrasive wheel, 322: abrasive wheel drive motor,
323: a polishing guide rail, 330: a retracted base,
331: a third direction drive shaft, 332: a third direction drive motor,
333: third direction guide projection, 350: cylinder part,
351: guide roller, 360: main frame,
361: Dispenser support frame.

Claims (14)

There is provided a correction device including a stand including a work roll disposed above and below a work and a backup roll disposed adjacent to the work roll, and a skin pass mill having an entry table positioned forward in a direction in which the stand enters the work As a result,
A roll surface foreign material removing device installed at an upper portion of the entry table;
A material surface scratch removing device for scrubbing a surface of the material passed through the skin pass mill to remove scratches; And
And a material edge remover for removing foreign matter on both side edges of the workpiece,
The roll surface foreign matter removing device comprises:
An abrasive wheel for removing foreign substances on the surface of the work roll or backup roll; a polishing section including a press driving section for moving the abrasive wheel in a pressing direction and a pressure releasing direction; And a base unit for moving the polishing unit in the vertical direction. The method according to claim 1,
The base unit moves the polishing unit to a position deviating from the work entering direction so that the stand does not interfere with the work while the stand is in the process of rolling, and while the stand is waiting for the rolling work, Correction facility for positioning in the entry direction. The method according to claim 1,
The material surface scratch removing device is installed on an upper portion of a first guide table positioned between a cutter and a deflector roll,
Wherein the workpiece edge removal device is installed above the second guide table positioned between the first guide table and the deflector roll. The method according to claim 1,
The polishing apparatus according to any one of claims 1 to 3, wherein the polishing surface of the polishing surface of the polishing surface And a vertical drive unit operable to cause the unit to descend to the material entry line. delete The method according to claim 1,
Wherein the roll surface debris removing apparatus further comprises a forward / backward driving section for moving the polishing unit in a direction approaching the work roll or the backup roll,
The polishing unit may further include a pressure driver for moving the pressing direction of the polishing unit,
And the advance / retreat drive unit moves the polishing unit at a speed higher than a speed at which the pressure drive unit moves the polishing wheel. The method according to claim 6,
Wherein the advancing and retreating drive unit includes a drive motor for moving the polishing unit and an auxiliary motor for moving the polishing unit when the drive motor malfunctions,
Wherein the base unit includes a driving motor for moving the polishing unit and an auxiliary motor for moving the polishing unit when the driving motor malfunctions. The method according to claim 1,
The base unit includes a driving shaft disposed in the vertical direction and screwed to a driving nut provided in the polishing unit, a driving motor for rotating the driving shaft, and a driving motor for stopping rotation of the driving shaft, A correction device comprising a braking portion that can be fixed. The method according to claim 1,
The material surface scratch removal apparatus comprises:
A grinding portion including a grinding wheel rotatably provided;
A first direction transfer frame for vertically moving the polishing unit,
A second direction transfer frame for moving the first direction transfer frame in the entry direction of the work,
And a third direction for moving the second directional transfer frame in the width direction of the workpiece comprises a frame. The method according to claim 1,
The material edge foreign matter removal device comprises:
A grinding portion including a grinding wheel rotatably provided;
A polishing unit for supporting the polishing unit;
And an advancing / retreating drive unit for moving the polishing unit in a width direction of the workpiece,
Wherein the polishing unit is provided on the polishing unit so as to be movable in the width direction of the work. 11. The method of claim 10,
The material edge foreign matter removal device comprises:
And a shock absorber interposed between the polishing unit and the polishing unit to reduce an impact applied to the polishing wheel. 11. The method of claim 10,
The material edge foreign matter removal device comprises:
A jetting portion including a plurality of nozzles for jetting air or a cleaning liquid and arranged in a width direction of the material,
And a guide roller that presses the workpiece and rotates with the progress of the workpiece. 13. The method of claim 12,
The nozzles of the constant-velocity spraying portion are positioned forward of the position of the nozzle positioned at the center in the width direction of the workpiece relative to the position of the nozzle located at the outer periphery in the widthwise direction of the workpiece. delete

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