KR20220148598A - Apparatus for detecting alignment state and method for detecting alignment state - Google Patents

Abstract

An alignment state detecting apparatus according to one embodiment of the present invention comprises: a measurement guide unit which is extended in a direction in which a plurality of rolls of an object are aligned, and is located at the upper side of the object; a height measurement unit which can be moved along the measurement guide unit and is connected to the measurement guide unit to measure the height of the object for each location; a deformation detection unit which can detect the height changing value of the height measurement unit for each location, and can generate a correction value from the height changing value; and a treatment unit which corrects the height of the object by the correction value in order to generate the correction height of the object for each location. Therefore, according to various embodiments of the present invention, even when a height is measured by means of the height measurement unit in a state in which the measurement guide unit is bent, the height data of a highly reliable roll may be acquired. Accordingly, the alignment state of the plurality of rolls may be more precisely grasped. Consequently, the plurality of rolls may be more precisely aligned, thereby preventing the generation of a failure of a product, such as a cast piece, caused by the dislocation in the alignment of the rolls.

Description

Alignment state detection device and alignment state detection method

The present invention relates to an apparatus for detecting an alignment state and a method for detecting an alignment state, and more particularly, to an apparatus for detecting an alignment state and a method for detecting an alignment state capable of more accurately detecting the alignment state of a roll.

The cast slab drawn from the mold is transported along a guide roll provided in each of a plurality of segments arranged in a row at the lower side of the mold. However, when the segment is used a plurality of times, a problem of misalignment of the guide roll may occur. Accordingly, it is necessary to check the alignment state with respect to the plurality of guide rolls, and when it is confirmed that the alignment is misaligned, the guide rolls must be realigned.

In order to check the alignment with respect to the plurality of guide rolls, a laser sensor, which is a height measuring means, is moved in a direction in which the plurality of guide rolls are arranged. Accordingly, the height of each of the plurality of guide rolls is measured. And by relatively comparing the measured heights of the guide rolls, it is possible to check the alignment state.

On the other hand, in order to move the laser sensor, the laser sensor is mounted on a cradle extending in the arranging direction of the plurality of guide rolls. Then, the height is measured while moving the laser sensor in the extension direction of the cradle.

However, bending deformation in which a part of the cradle sags downward may occur due to the load of the laser sensor. In this case, the height measurement value of the guide roll measured from the laser sensor is not accurate. Accordingly, there is a problem in that the alignment state with respect to the guide rolls cannot be accurately determined.

Korean Patent Registration 10-1262053

The present invention provides an arrangement state detection apparatus and an arrangement state detection method capable of detecting a height value with high reliability.

The present invention provides an alignment state detection apparatus and an alignment state detection method capable of detecting an alignment state for objects of various lengths.

The present invention provides an alignment state detection device and an alignment state detection method capable of stably moving a height measuring unit.

An apparatus for detecting an alignment state according to an embodiment of the present invention includes: a measurement guide part extending in a direction in which a plurality of rolls of an object are arranged and positioned above the object; a height measuring part connected to the measuring guide part so as to be movable along the measuring guide part and to measure the height of the object for each location; a deformation detection unit capable of detecting a height change value of the height measurement unit for each position and generating a correction value from the height change value; and a processing unit that corrects the height of the object with the correction value to generate a corrected height of the object for each location.

The deformation detecting unit detects the height change value by using a difference between a preset reference height and the height of the height measuring unit, and the deformation detecting unit has a magnitude of the height change value, The correction value is generated to have a (-) or positive (+) value.

The deformation detecting unit may include: a light emitting unit installed in the height measuring unit; and a position sensor installed in the measurement guide unit to face the light emitting unit so as to receive the light emitted from the light emitting unit, wherein the position sensor detects the height of the height measuring unit using the received light height .

The measurement guide unit may include: a main body extending in a direction in which the plurality of rolls are arranged; first and second actuators spaced apart from each other in the extension direction of the main body and installed on the main body; and a belt having both ends connected to the first and second actuators so as to move in the extension direction of the main body by the operation of the first and second actuators. Including, wherein the height measuring unit is fastened to the belt so as to be positioned on at least one of one side and the other side in a direction crossing the extension direction of the main body, and the position sensor is installed on at least one of the first and second actuators .

The position sensor is positioned above the upper surface of the main body, and the light emitting part is installed to protrude from the height measuring part.

first and second conveying guide portions spaced apart from each other in the arranging direction of the plurality of rolls; To be mounted on the main body so that each of them is seated on the upper portion of the first and second transfer guides and slides, the distance between each other is adjusted according to the distance between the first transfer guide and the second transfer guide. First and second transfer units capable of; includes

Each of the first and second transfer units includes a transfer roller connected to the main body so as to be seated on an upper portion of each of the first and second transfer guide units and rotated, and the transfer roller includes the first and second transfer rollers. 2 horizontal members extending in a direction intersecting the extending direction of each of the transfer guides; and an inclined member connected to both ends of the horizontal member and provided to have an outer diameter decreasing toward the horizontal member.

Each of the first and second transfer parts, a pair of fixing members arranged to be spaced apart in the extending direction of the transfer roller connected to both ends of the transfer roller; And first and connected to each of the pair of fixing members spaced apart in a direction intersecting the extension direction of the main body so that the main body can be positioned therebetween and each can be moved toward the main body or opposite to the main body It includes a second fastening member.

Each of the first and second transfer parts is a separation preventing member installed on the fixing member so as to be positioned outside each of the first and second transfer guide parts opposite to the space between the first transfer guide part and the second transfer guide part. Including, wherein the separation preventing member has a shape extending downward from the fixing member, and the separation preventing member may be formed to extend so that an end located below the fixing member is located below the conveying roller. .

The separation preventing member may have a shape inclined toward the lower side to be closer to the center of the conveying roller in the extending direction.

An embodiment of the present invention provides a method of detecting an alignment state with respect to an object including a plurality of rolls, the process of measuring the height of the object; detecting a height of a height measuring unit measuring the height of the object; generating a correction value using the height of the height measuring unit; generating a corrected height of the object by using the height of the object and the correction value; and determining the alignment state using the correction height.

The process of measuring the height of the object includes measuring the height of the object at a plurality of positions in a direction in which the plurality of rolls are arranged, and the process of detecting the height of the height measuring unit includes: and detecting the height of the height measuring unit, and generating the correction value includes generating the correction value at the plurality of positions.

The generating of the correction value may include: detecting a height change value of the height measuring unit using a difference between a preset reference height and a height of the height measuring unit; and determining a sign as a negative (-) or positive (+) value, and generating a correction value having a magnitude of the height change value. generating the correction value as a negative (-) value when is detected below the reference height; and generating the correction value as a positive (+) value when the height of the height measuring unit is detected above the reference height.

The process of generating the corrected height of the object includes adding the correction value to the height of the object.

The process of generating the correction height of the object includes the process of generating a plurality of roll correction heights that are correction heights for each of the plurality of rolls, and the process of determining the alignment state includes: and determining the alignment state in the height direction with respect to the plurality of rolls by relatively comparing them.

The process of generating the roll compensation height may include a process of generating using a height of a highest value among a plurality of heights measured at the plurality of positions for each of the plurality of rolls.

The object includes a frame supporting the plurality of rolls under the plurality of rolls, and the process of generating the corrected height of the object includes the frame measured at a plurality of positions in a direction in which the plurality of rolls are arranged. The process of generating a plurality of bottom surface correction heights that are corrected heights for the upper surface of the frame by using the height of the upper surface and the correction value of Thus, it includes the process of detecting a gap between the rolls arranged adjacently, and the process of determining the alignment state includes the process of determining the alignment state in the arranging direction for a plurality of rolls by comparing the distance between the rolls. .

In the process of generating the roll correction height, the first height of the object measured by using the first height measurement unit and the first correction value generated from the height of the first height measurement unit are used to generate the first roll correction height process; and a second height of the object measured using a second height measuring unit disposed to face the first height measuring unit in the extending direction of the Sangli roll, and a second correction value generated from the height of the second height measuring unit. The process of generating a second roll correction height includes; and the process of determining the alignment state includes comparing the first roll correction height and the second roll correction height to determine the horizontal alignment state in the roll extension direction. includes the process.

The generating of the floor corrected height may include: generating a first floor corrected height using the first height and the first corrected value; and generating a second floor correction height using the second height and the second correction value. Including, the process of detecting the gap between the rolls, the process of detecting the first gap by detecting the distance at which the first floor correction height is maintained, and detecting the distance at which the second floor correction height is maintained, a process of detecting a second gap, wherein the process of determining the alignment state comprises a process of determining a horizontal alignment state in an arranging direction for each of the plurality of rolls by comparing the first gap with a second gap include

According to the embodiments of the present invention, even when the height is measured by the height measuring unit in a state where the measuring guide unit is bent, it is possible to obtain reliable roll height data. Accordingly, the alignment state of the plurality of rolls may be more accurately identified. Therefore, it is possible to more accurately align a plurality of rolls, thereby preventing the occurrence of defects in products, for example, cast steel due to misalignment of the rolls.

In addition, the distance between the pair of transfer units may be adjusted according to the length of the object determined by at least one of the number and diameter of the plurality of rolls, and the measurement guide unit may be mounted. Accordingly, the height may be measured regardless of the variation in the length of the object.

In addition, as the conveying unit is provided with a separation preventing member or the conveying roller of the conveying unit has an inclined member, the conveying unit can be stably moved without being separated from the conveying guide. Accordingly, it is possible to stably measure the height using the height measuring unit.

1 is a three-dimensional view showing an arrangement state detection apparatus according to an embodiment of the present invention.
2 is a front view of FIG. 1 viewed from the 'A' side.
3 is a perspective view illustrating a measurement guide unit, a height measurement unit installed in the measurement guide unit, and a deformation detection unit according to an embodiment of the present invention.
4 and 5 are conceptual views for explaining a method of measuring a height by a height measuring unit and a method of generating a correction value by detecting a height change of the height measuring unit according to an embodiment of the present invention.
6 is a graph illustrating the corrected height of the object for each position generated by the processing unit according to an embodiment of the present invention.
7 is an example in which a processing unit generates a corrected height of an object for each location by a method according to a modified example of the embodiment, and graphs it.
8 is a three-dimensional view illustrating a state in which the transfer unit is mounted on the measurement guide unit according to an embodiment of the present invention.
9 is a front view illustrating a state in which the transfer unit is seated on the transfer guide unit according to an embodiment of the present invention.
10 is a side view illustrating a state in which the transfer unit is coupled to the main body of the measurement guide according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments, but will be implemented in various different forms, only these embodiments allow the disclosure of the present invention to be complete, and to completely inform those of ordinary skill in the scope of the invention It is provided to give. The drawings may be exaggerated in order to explain the embodiment of the present invention, and like reference numerals in the drawings refer to the same components.

1 is a three-dimensional view showing an arrangement state detection apparatus according to an embodiment of the present invention. 2 is a front view of FIG. 1 viewed from the 'A' side. 3 is a perspective view illustrating a measurement guide unit, a height measurement unit installed in the measurement guide unit, and a deformation detection unit according to an embodiment of the present invention.

Here, FIG. 2 is a front view showing the stand 13 on which a plurality of rolls are mounted or supported in FIG. 1 removed. And FIG. 3(b) is an enlarged view for explaining the first actuator and the tension adjusting unit, and is an enlarged view showing the first cover removed. And FIG. 3(c) is an enlarged view for explaining the second actuator, and is an enlarged view showing the second cover removed.

Hereinafter, an apparatus for detecting an alignment state according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 . At this time, as the object 10 for which the alignment state is to be detected, a segment of a casting equipment including a plurality of rolls 11 will be described as an example.

Of course, the apparatus to which the apparatus for detecting the alignment state according to the embodiment is applied is not limited to the above-described segment, and may be applied to detecting the alignment state of various devices.

1 to 3 , the alignment state detection device according to an embodiment of the present invention follows the measurement guide part 2000 and the measurement guide part 2000 extending in a direction crossing the extension direction of the roll 11 . and a height measurement unit 1000 connected to the measurement guide unit 2000 to be movable and to measure the height of the object 10 for each location.

In addition, the alignment state detection device is installed in the height measurement unit 1000 and the measurement guide unit 2000 to generate a correction value according to the deformation of the measurement guide unit 2000, and the light emitting unit 3100 and the position sensor 3200. The height of the object 10 measured by the deformation detection unit 3000 (see FIG. 3 ), the height measurement unit 1000, and the correction value generated by the deformation detection unit 3000 including and a processing unit 4000 that generates a corrected height of the object 10 that can determine the alignment state.

In addition, the alignment state detection device includes the first and second transfer guide portions 5000a and 5000b spaced apart from each other in the extension direction of the measurement guide portion 2000 as shown in FIGS. 1 and 2 , and the extension direction of the measurement guide portion 2000 . and first and second transfer units 6000a and 6000b mounted on the measurement guide unit 2000 to be slidable along the first and second transfer guide units 5000a and 5000b, respectively.

Hereinafter, the extending direction of the roll 11 is defined as a first direction (X-axis direction), and a direction crossing or orthogonal to the extending direction of the roll 11 is defined as a second direction (Y-axis direction). In addition, the vertical direction or the height direction is defined as a third direction (Z-axis direction).

The measurement guide unit 2000 is a means for supporting the height measurement unit 1000 and moving it in the extension direction of the measurement guide unit 2000 , that is, in the second direction. Referring to FIG. 3 , the measurement guide unit 2000 operates a main body 2100 extending in the second direction, a belt 2300 mounted on the main body 2100 and operated to be transported in the second direction, and the belt 2300 . and a driving unit 2200. In addition, the measurement guide unit 2000 may include a tension adjusting unit 2400 mounted on the main body 2100 to adjust the tension of the belt 2300 .

The body 2100 may have a bar shape extending in the arranging direction of the first transfer guide part 5000a and the second transfer guide part 5000b. The body 2100 may have a shape extending in a direction crossing or orthogonal to an extension direction of each of the first and second transfer guide parts 5000a and 5000b.

And, in the main body 2100, a part of the first and second transfer parts 6000a and 6000b to be described later as shown in FIGS. A groove into which it can be inserted (hereinafter, a fastening groove 2110) may be provided. The fastening groove 2110 may have a shape recessed inward from each of one side and the other side of the body 2100 . In addition, the fastening groove 2110 may be provided to extend in the extension direction of the main body 2100 , that is, in the second direction.

In addition, a groove-shaped rail for guiding the first actuator 2210a to be described later may be moved by the operation of the tension adjusting unit 2400 may be provided on the upper surface of the main body 2100 .

Referring to (a), (b) and (c) of Figure 3, the driving unit 2200 is installed at both ends of the main body 2100 in the second direction, first and second actuators 2210a, 2210b, which are spaced apart from each other, A driving source 2220 connected to the second actuator 2210b to provide driving force may be included. In this case, the first and second drivers 2210a and 2210b may be installed, for example, on the upper portion of the main body 2100 .

The first actuator 2210a is located at one end of the main body 2100 in the second direction as shown in FIG. It may include a first holder (2211a) mounted on the 2100. Also, the first driver 2210a may include a first cover 2213a that covers the first pulley 2212a and the first holder 2211a as shown in FIG. 3A .

Also, the second driver 2210b may have a configuration similar to that of the above-described first driver 2210a. That is, the second actuator 2210b is located at the other end of the body 2100 in the second direction to face the first pulley 2212a as shown in FIGS. 3A and 3C and is a rotatable second pulley (2212b), the second holder (2211b) mounted on the body 2100 to support the second pulley (2212b), the second pulley (2212b) and the second cover (2213b) covering the second holder (2211b) may include

The first holder 2211a is installed on the upper surface of the body 2100 to support the first pulley 2212a. In this case, the first holder 2211a may include a protruding member whose lower surface protrudes downward, and the protruding member may be fastened to be inserted into a groove-shaped rail provided on the upper surface of the body 2100 . Accordingly, when the tension adjusting unit 2400 is operated, the first holder 2211a may be moved a predetermined distance in the second direction through the rail provided on the main body 2100 . And the tension of the belt 2300 may be adjusted by the movement of the first holder 2211a.

Each of the first and second pulleys 2212a and 2212b may be a means provided with teeth on its outer circumferential surface.

In addition, the position sensor 3200 of the deformation detection unit 3000 to be described later may be installed in any one of the first and second drivers 2210a and 2210b, for example, the first driver 2210a (FIG. 3(b)). ), the light emitting unit 3100 of the deformation sensing unit 3000 may be installed in the height measuring unit 1000 (see FIG. 3(d) ). In this case, the position sensor 3200 may be installed to face the height measuring unit 1000 in the second direction. Accordingly, the first cover 2213a has an inner space for accommodating the first pulley 2212a and the first holder 2211a to be located inside, and opens toward the height measuring unit 1000 among both ends in the second direction. It may be provided in the shape of

The belt 2300 may be installed to surround the first and second pulleys 2212a and 2212b while connecting between the first and second pulleys 2212a and 2212b. That is, the belt 2300 may be in the form of a ring or an endless loop. In addition, the inner peripheral surface of the belt 2300 may be provided with teeth that can be engaged with the teeth provided on each of the first and second pulleys 2212a and 2212b.

The driving source 2220 may be a means for providing rotational power to the second pulley 2212b by being connected to the second pulley 2212b as shown in (c) of FIG. 3 . The driving source 2220 may be, for example, a means including a servomotor capable of controlling the amount of rotation. Here, although it has been described that the driving source 2220 is connected to the second pulley 2212b, it may be connected to the first pulley 2212a.

According to the driving unit 2200 , the first and second pulleys 2212a and 2212b rotate by the operation of the driving source 2220 . At this time, the teeth provided on the first and second pulleys 2212a and 2212b and the teeth provided on the belt 2300 are engaged to rotate the belt 2300 in an endless loop form. According to the rotational movement of the belt 2300 , the height measuring unit 1000 is horizontally moved in the extension direction of the main body 2100 , that is, in the second direction.

Referring to (b) of FIG. 3 , the tension adjusting unit 2400 is a fixing bracket 2410 mounted to the main body 2100 so as to be located outside the first holder 2211a, and is mounted to the first holder 2211a. It may include an adjustment member 2430 that is installed to connect the connection bracket 2420 and the fixing bracket 2410 and the connection bracket 2420 to move forward toward the first holder 2211a or move backward in the opposite direction.

Here, the adjustment member 2430 may be a screw provided with a screw thread on the outer circumferential surface. In addition, the adjustment member 2430 may be installed to pass through the fixing bracket 2410 and the connection bracket 2420 so as to be rotatable. In addition, in each of the fixing bracket 2410 and the connection bracket 2420 , a thread capable of being fastened with a thread provided in the adjusting member 2430 may be provided on an inner circumferential surface of a hole through which the adjusting member 2430 passes.

In addition, a sensor (hereinafter, referred to as a tension sensor) for detecting the tension of the belt 2300 may be mounted on the first holder 2211a, for example, a pressure sensor. Accordingly, when the tension of the belt 2300 sensed by the tension sensor is loose less than the reference tension, the tension of the belt 2300 can be tightened by rotating the adjusting member 2430 to move it backward. Conversely, when the tension of the belt sensed by the tension sensor exceeds the reference tension, the adjustment member 2430 may be rotated to move forward so as to be relatively loosened. Accordingly, the belt 2300 may be maintained at a constant or uniform tension.

The object 10 may be, for example, a segment including a plurality of rolls 11 as described above. That is, the object 10 may be separated from the casting equipment in order to check the alignment state among the plurality of segments of the casting equipment.

And the separated object 10 is disposed between the first transfer guide part 5000a and the second transfer guide part 5000b under the main body 2100 of the measurement guide part 2000 as shown in FIG. 2 . At this time, the plurality of rolls 11 of the segment, which is the object 10 , face the measurement guide unit 2000 , and the frame 12 of the segment is disposed below the plurality of rolls 11 . In other words, regardless of the upper segment positioned on the upper side of the cast slab, the lower segment positioned on the lower side of the cast slab, a plurality of rolls 11 face the measurement guide part 2000 , and the frame 12 rotates the roll 11 . to be located below the

In addition, the height measuring unit 1000 is mounted on the measurement guide unit 2000 to measure the height of the object 10 positioned below it. At this time, when the object 10 includes a plurality of rolls 11 and a frame 12 supporting the plurality of rolls 11 as shown in FIG. 2 , the height data measured by the height measurement unit 1000 is the roll It may include the height of (11) and the height of the frame (12).

4 and 5 are conceptual views for explaining a method of measuring a height by a height measuring unit and a method of generating a correction value by detecting a height change of the height measuring unit according to an embodiment of the present invention.

Here, FIGS. 4A and 5A show a state in which the height measuring unit measures the height of the object while emitting light from the light emitting unit of the deformation sensing unit to the position sensor.

And Fig. 4 (a) shows a state in which the measurement guide part is horizontal, and Fig. 4 (b) conceptually shows a state in which light is irradiated to the position sensor in the state of Fig. 4 (a). . In addition, (a) of FIG. 5 shows the extreme bent state of the measurement guide part, and FIG. 5 (b) conceptually illustrates a state in which light is irradiated to the position sensor in the state of FIG. 5 (a). it will be shown

The height measuring unit 1000 may be horizontally moved in a second direction intersecting the extending direction of the roll 11 and may be a means for measuring the height of the object 10 . The height measuring unit 1000 is mounted on the belt 2300 as shown in FIGS. 3A and 3D , and may be moved by the rotational operation of the belt 2300 .

4 (a) and 5 (a), the height measuring unit 1000 is installed inside the body (hereinafter, the measuring body 1100) and the measuring body 1100 of the object 10 It may include a sensor for measuring the height (hereinafter, the height sensor 1200).

The measurement body 1100 may have a cylindrical shape having an internal space in which at least a portion of the height sensor 1200 can be accommodated therein. In addition, the measurement body 1100 may have an open lower portion as in FIGS. The measurement body 1100 may be mounted on the belt 2300 . At this time, the measuring body 1100 may be mounted on the belt 2300 so as to be positioned on one side of the body 2100 in the first direction as shown in FIGS. 1 and 3 (a).

Although it has been described above that the height sensor 1200 is installed inside the measuring body 1100 , the height sensor 1200 may be installed outside the measuring body 1100 without being limited thereto. For example, the height sensor 1200 may be installed on the lower surface of the measurement body 1100 .

The height sensor 1200 may be a means for measuring a distance by irradiating light, for example, a laser, and measuring the height of the object using the measured distance. The height sensor 1200 includes, for example, a light emitting unit 1210 for generating and irradiating light and a receiving unit 1220 for receiving the light as shown in FIGS. 4 (a) and 5 (a). can do. In addition, the height sensor 1200 may measure the distance L _m using the time it takes for the light emitted from the light emitting unit 1210 to be received again by the receiving unit 1220 . At this time, the shorter the time that the light emitted from the height sensor 1200 is reflected from the object 10, for example, the roll 11 and is received again, the separation distance (L _m ) between the height sensor 1200 and the object 10 is measured as short.

And the height measuring unit 1000, more specifically, the height sensor 1200 converts the measured distance (L _m ) into a height. For example, the height measurement unit 1000 may be a means for subtracting the measured distance L _m from a preset reference height value (hereinafter, a reference value) and outputting it as a height (H _m ) value. . Here, the reference value may be determined by the height of the height measurement unit 1000 when the measurement guide unit 2000 is not deformed or bent. Also, at this time, the height of the height measuring unit 1000 serving as the reference value may be a height from the upper surface of the frame 12 supporting the plurality of rolls 11 . And, the reference value may be a fixed value that does not change.

As such, the height measuring unit 1000 measures the separation distance L _m from the object 10 by the above-described method, and converts it into a height H _m . Accordingly, it may be described that the height H _m of the object 10 is measured through the height measurement unit 1000 .

The height measurement unit 1000 may measure the height H _m of the object by irradiating light downward while horizontally moving in the second direction by the measurement guide unit 2000 . Accordingly, the height H _m of the object for each position in the second direction is measured through the height measuring unit 1000 . The height data measured by the height measurement unit 1000 is transmitted to the processing unit 4000 .

The processing unit 4000 determines the corrected height of the object 10 for each position by using the height (H _m ) of the object for each position measured by the height measurement unit 1000 and the correction value generated by the deformation detection unit 3000 to be described later. create A detailed description of the processing unit 4000 will be provided again below.

The height measurement unit 1000 measures the height H _m of the object 10 while horizontally moving along the extension direction of the measurement guide unit 2000 . Also, the height H _m of the object 10 measured by the height measurement unit 1000 may be determined according to the separation distance L _m between the height measurement unit 1000 and the object 10 as described above.

In this case, as described above, the shorter the actual separation distance between the height measuring unit 1000 and the object 10 is, the shorter the time the emitted light is reflected from the object 10 , for example, the roll 11 and received again. Accordingly, as the re-reception time is shorter, the height measuring unit 1000 measures or detects a shorter distance L _m between the height measuring unit 1000 and the object. In addition, the height measuring unit 1000 calculates the height H _m of the object 1000 by subtracting the measured separation distance L _m from the fixed reference value. Accordingly, the shorter the separation distance (L _m ) measured by the height measurement unit 1000 is, the higher the _height of the object 1000 calculated by the height measurement unit 1000 is. The height of the object 1000 calculated by the height measuring unit 1000 is low.

However, the measurement guide unit 2000 , more specifically, the body 2100 , may undergo bending deformation in which at least a part of the body 2100 droops downward by the height measurement unit 1000 . In this case, in the extending direction of the measurement guide unit 2000 , the height of some regions may be different from the heights of other regions.

More specifically, both ends of the measurement guide part 2000 in the second direction are supported on the first and second transfer guide parts 5000a and 5000b through the first and second transfer parts 6000a and 6000b. . However, there is no means for directly supporting the area between the first and second transfer guide parts 5000a and 5000b of the measurement guide part 2000 . In addition, the height measuring unit 1000 moves horizontally in a section between the first transfer guide part 5000a and the second transfer guide part 5000b among the measurement guide parts 2000 . In this case, the height measuring unit 1000 may act as a load on the measuring guide unit 2000 . Accordingly, the measurement guide unit 2000 may be bent downward by a load applied from the height measurement unit 1000 . For example, the measurement guide part 2000 may be bent so that the height of the area where the height measurement part 1000 is located among the measurement guide parts 2000 becomes the lowest state.

In addition, since the height measuring unit 1000 horizontally moves along the measurement guide unit 2000 , the position having the lowest height may change according to the movement of the measurement guide unit 2000 . In addition, since both ends of the measurement guide part 2000 are supported by the first and second transport guide parts 5000a and 5000b, the height measuring part 1000 is the first transport guide part 5000a or the second transport guide. As it is positioned closer to the part 5000b, the amount of bending of the measurement guide part 2000 may be reduced. Conversely, when the height measuring unit 1000 is positioned at the center of the measuring guide unit 2000 , the amount of bending may be greatest.

When the measurement guide unit 2000 is bent in this way, the actual height of the height measurement unit 1000 as a reference for measuring the separation distance L _m is not constant. Accordingly, there is a problem in that the height (H _m ) of the object calculated or detected using the separation distance (L _m ) becomes inaccurate. Accordingly, the reliability of the height H _m of the object measured by the height measuring unit 1000 is deteriorated.

Accordingly, as shown in FIGS. 3 to 5 , the deformation detection unit 3000 is provided to detect a height change value of the height measurement unit 1000 according to the deformation of the measurement guide unit 2000 . In addition, the deformation detection unit 3000 generates a correction value from the height change value of the height measurement unit 1000 , and the processing unit 4000 corrects the height of the object measured by the height measurement unit 1000 as a correction value to obtain a corrected height. create

Referring to FIGS. 3 (b), 3 (d), 4 (a), and 5 (a), the deformation detecting unit 3000 is installed in the height measuring unit 1000 to generate light (Li) It may include a position sensor 3200 installed in the light emitting unit 3100 and the first driver 2210a that emits light, and receiving the light emitted from the light emitting unit 3100 and detecting the position of the received light.

The light emitting unit 3100 may be installed in the height measuring unit 1000 to face the position sensor 3200 . That is, the light emitting unit 3100 may be installed on the measurement body 1100 . At this time, the height measuring unit 1000 is installed to be positioned on one side of the main body 2100 as shown in FIGS. 1 and 3 (a), and the first driver 2210a is installed on the upper part of the main body 2100 . Accordingly, the light emitting unit 3100 protrudes from the measurement body 1100 toward the main body 2100 as shown in FIG. 3 (d) so as to face the position sensor 3200 installed in the first driver 2210a in the second direction can be very installed. More specifically, the bracket 3300 is installed to protrude toward the main body 2100 from the rear surface facing the main body 2100 of the measurement body 1100, and the light emitting part 3100 is fastened to the bracket 3300. can And the light emitting part 3100 is installed so that one end of which light Li is emitted faces the position sensor 3200 installed in the first holder 2211a. In this case, the light emitting unit 3100 is preferably installed so that one end thereof faces the center of the vertical direction of the position sensor 3200 . Such a light emitting unit 3100 may be, for example, a means for emitting a laser (laser).

The position sensor 3200 may be mounted on the first actuator 2210a as shown in FIGS. 4A and 5A . At this time, the position sensor 3200 is installed in the first holder 2211a as shown in FIG. can be

The position sensor 3200 may be a means for receiving the light emitted from the light emitting unit 3100 and detecting a height change value of the height measuring unit 1000 by using the position of the received light. In addition, the position sensor 3200 may be a means for generating a correction value (V _c ) from the height change value.

Referring to FIGS. 4 (b) and 5 (b), the position sensor 3200 detects the received height (P _r ) of the light (Li), and using this, the height measurement unit A height change value of (1000) is detected. That is, the position sensor 3200 detects a height change value of the height measurement unit 1000 using the reference height P _s and the light reception height P _r .

Here, the reference height P _s may be a position at which the light Li emitted from the light emitting unit 3100 is received by the position sensor 3200 when the measurement guide unit 2000 is not bent and is horizontal. And the reference height (P _s ) may be, for example, a position that becomes the center of the vertical direction of the position sensor 3200, and may be a distance unit, for example, a mm unit. As a more specific example, the reference height P _s may be a position expressed as '0 mm'.

In addition, the position sensor 3200 generates a correction value (V _c ) from the detected height change value. That is, the position sensor 3200 has the magnitude of the height change value, and generates a correction value V _c to have a negative (-) or positive (+) value according to the height change direction of the height measurement unit 1000 . do.

At this time, when the position sensor 3200 receives the light Li to the lower side of the reference height P _s , it is determined that the height measurement unit 1000 is changed to the lower side due to the deformation of the measurement guide unit 2000 . and the correction value (V _c ) is generated as a negative (-) value. Conversely, the position sensor 3200 determines that when the light Li is received above the reference height P _s , the height measurement unit 1000 has a height change upward due to the deformation of the measurement guide unit 2000, and , the correction value (V _c ) is generated as a positive (-) value.

For example, when it is detected that light is received at a point 100 mm apart from the reference height P _s in the position sensor 3200, the position sensor 3200 detects a height change value of the height measurement unit 1000 as 100 mm. do. And, when it is detected that the light Li is received at a point spaced 100 mm downward from the reference height P _s , the position sensor 3200 has a size of '100 mm' and a negative (-) value of '-100 mm'. A correction value (V _c ) of

Hereinafter, an operation of the deformation detection unit according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5 .

At this time, the separation distance (L _m ) and the height of the object (H _m ) in a state in which the measurement guide part is horizontal as shown in FIG. 4 (a) and in a state where the measurement guide part is bent as shown in FIG. For this, the separation distance (L _m ) in (a) of FIG. 4 is specified as 'L _m1 ', and the height (H _m ) of the object is specified as 'H _m1 '.

In addition, in order to separately explain the reception height (P _r ) of the light detected by the position sensor in the case of Fig. 4 (b) and Fig. 5 (b), the reception height of the light in Fig. 4 (b) (P _r ) is specified as 'P _r1 ', and the reception height (P _r ) of light in FIG. 5(b) is specified as 'P _r2 '.

When the measurement guide part 2000 is not bent and is horizontal as shown in FIG. 4(a), the light Li emitted from the light emitting part 3100 of the deformation detection part 3000 is as shown in FIG. 4(b). It may be received as the reference height (P _s ) of the position sensor 3200. That is, the reception height P _r1 of the light detected from the position sensor 3200 may be the same as the reference height P _s . As a specific example, the light reception height P _r1 may be detected as '0 mm' equal to the reference height P _s .

When the light reception height P _r1 is detected, the position sensor 3200 detects a height change value of the height measuring unit 1000 through the difference between the light reception height P _r1 and the reference height P _s . And, the position sensor 3200 has a magnitude of the height change value, and generates a correction value V _c to have a negative (-) or positive (+) value according to the height change direction of the height measurement unit 1000 . do. At this time, since the light reception height P _r1 is the same as the reference height P _s , the height change value of the height measurement unit 1000 is detected as 0 mm. Accordingly, the position sensor 3200 generates a correction value V _c of 0 mm.

As another example, when the measurement guide part 2000 is bent downward by the height measuring part 1000 as shown in FIG. As such, it may be received below the reference height P _s . That is, the reception height P _r2 of the light detected from the position sensor 3200 may be a position separated by a predetermined distance to the lower side of the reference height P _s . And the position sensor 3200 detects the height change value of the height measurement unit 1000 through the difference between the light reception height (P _r2 ) and the reference height (P _s ), and uses this to generate a correction value (V _c ) do. At this time, since the light Li is received below the reference height P _s as shown in FIG. 5B , a correction value V _c having a negative (-) value is generated. That is, a correction value (V _c ) that is a negative (-) value is generated with the magnitude of the detected height change value.

Also, although not shown, for example, when the measurement guide unit 2000 is bent upward, the light Li irradiated from the light emitting unit 3100 may be received above the reference height P _s . Accordingly, the correction value V _c generated from the position sensor 3200 may be a positive (+) value.

The processing unit 4000 may determine the alignment state of the roll 11 using the height (H _m ) of the object measured by the height measurement unit 1000 and the correction value (V _c ) generated by the deformation detection unit 3000 . Create a height (H _c ) with That is, the processing unit 4000 generates a height (hereinafter, corrected height H _c ) obtained by correcting the height H _m of the object measured by the height measurement unit 1000 with the correction value V _c . In this case, for example, as shown in Equation 1 below, the correction height H _c may be calculated by adding the correction value V _c to the height H _m of the object measured by the height measurement unit 1000 .

[Formula 1]

Correction height (H _c ) = height of the object (H _m ) + correction value (V _c )

For example, when a change in height of the height measurement unit 1000 does not occur because deformation does not occur in the measurement guide unit 2000 as shown in FIGS. 4 (a) and (b), the correction value V _c ) may be 'Omm'. When the correction value V _c is generated in this way, the processing unit 4000 adds it to the height H _m1 of the object to generate the correction height H _c (see Equation 1). In this case, since the correction value V _c is 0 mm, the correction height H _c may be generated as the same value as the height H _m1 of the object 10 measured by the height measurement unit 1000 .

As another example, when the bending in which the measurement guide part 2000 sags downward as in FIGS. 5A and 5B is generated, the correction value V _c is generated as a negative (-) value. For example, when the height change value of the height measuring unit 1000 is 100 mm, the correction value V _c is generated as '-100 mm'.

When the correction value V _c is generated, the processing unit 4000 generates the correction height H _c by adding it to the height H _m2 of the object (see Equation 1). At this time, since the correction value V _c is -100 mm, it may be generated through an operation such as 'correction height (H _c ) = height of the object (H _m2 ) + (-100 mm)'. Accordingly, the corrected height H _c of the object generated by the processing unit 4000 is generated as a smaller or lower value than the height H _m2 of the object measured by the height measurement unit 1000 . In addition, since the corrected height (H _c ) generated in this way is a height corrected by the correction value (V _c ) according to the bending of the measurement guide unit 2000 , the corrected height (H _c ) is the measurement guide unit 2000 bent. It may be the same as the height measured by the height measuring unit 1000 in a horizontal state without being supported.

As described above, a correction value V _c is generated from a height change of the height measurement unit 1000 according to the deformation of the measurement guide unit 2000 , and the height H _m of the object is corrected with the correction value V _c . do. Accordingly, the height value can be detected under the same conditions as when the measurement guide unit 2000 is horizontal, without physically correcting the bending deformation of the measurement guide unit 2000 .

As described above, the height change value of the height measuring unit 1000 is measured using the reference height P _s preset in the position sensor 3200 and the reception height P _r of the light received by the position sensor 3200 . detect At this time, since the light reception height (P _r ) is determined by the height of the light emitting unit 3100 emitting light toward the position sensor 3200 , the light reception height (P _r ) is the height of the light emitting unit 3100 . can be explained.

In addition, since the light emitting unit 3100 is installed in the height measuring unit 1000 and the height of the light emitting unit 3100 changes according to the height of the height measuring unit 1000 , the reception height of light (P _r ) is measured by the height. It can be described as being the height of the portion 1000 . More specifically, the light reception height (P _r ) may be described as the height of a portion of the height measuring unit 1000 to which the light emitting unit 3100 is mounted. Accordingly, the light reception height P _r may be referred to as the height of the height measuring unit 1000 .

In addition, the reference height P _s provided in the position sensor 3200 is the light emitting unit 3100 of the light emitting unit 3100 or the height measuring unit 1000 when the measurement guide 2000 is horizontal without being bent. It may be a position on the position sensor 3200 facing the designated part. Accordingly, the height of the height measuring unit 1000 may be described as a relative height with respect to the reference height P _s provided in the position sensor 3200 .

6 is a graph illustrating the corrected height of the object for each position generated by the processing unit according to an embodiment of the present invention.

The processing unit 4000 corrects the height (H _m ) of the object for each position measured while the height measurement unit 1000 moves in the second direction with a correction value (V _c ) generated by the deformation detection unit 3000 , A corrected height (H _c ) of the object for each location is generated. If the corrected height (H _c ) of the object for each position generated in this way is arranged in order and connected to the graph, for example, it may be as shown in FIG. 6 .

By relatively comparing the corrected height H _c of the object for each position generated by the processing unit 4000 , the relative height relationship between the plurality of rolls 11 may be grasped. That is, it is possible to grasp the height alignment state of the plurality of rolls (11). More specifically, it is possible to determine whether the height of some rolls is low or high.

Meanwhile, the height measuring unit 1000 measures the height by continuously irradiating light while moving in the second direction as described above. Accordingly, not only the height of the roll 11 but also the area between the roll 11 and the roll 11, for example, the height of the frame 12 is measured. Here, the height of the frame 12 may be a height with respect to the upper surface of the frame 12 facing the measurement guide unit 2000 . Accordingly, the corrected height data generated by the processing unit 4000 may include the height of the frame as well as the height of the roll.

At this time, as shown in FIGS. 2, 4 (a) and 5 (a), the plurality of rolls 11 face the measurement guide part 2000 or the height measurement part 1000, and the frame 12 is the plurality of The height of the object 10 is measured in a state where it is positioned below the roll 11 . Accordingly, the height of the upper surface of the frame 12 facing the measurement guide unit 2000 or the height measurement unit 1000 is measured to be lower than the height of the roll 11 . Accordingly, the corrected height for the upper surface of the frame 12 is lower than the corrected height for the roll.

And since the upper surface of the frame 12 is located on the lower side compared to the roll 11, the corrected height for the upper surface of the frame 12 may be less than or equal to a predetermined height. Accordingly, it is possible to distinguish whether the height of the object generated based on the predetermined height is the corrected height for the roll or the corrected height for the frame.

In this way, in the processing unit 4000, the correction height for each of the plurality of rolls 11 (hereinafter, the roll correction height (H _cr )) and the correction height for the region between the adjacent rolls are, A correction height (hereinafter, a correction height (H _cb ) of the bottom surface) is generated. At this time, the roll compensation height (H _cr ) is generated equal to the number of rolls 11 arranged in the second direction, and the bottom compensation height (H _cb ) is one smaller number than the number of the rolls 11. can Here, the bottom surface correction height (H _cb ) is a correction height for the area between the adjacent rolls 11 as described above, and thus may be referred to as a 'correction height between rolls (H _cb )'.

As described above, the height measuring unit 1000 moves in the arranging direction of the plurality of rolls 11 to measure the height (H _m ) of the object by position, and the processing unit 4000 measures the corrected height (H _c ) of the object for each position. ), so the roll correction height (H _cr ) and the floor correction height (H _cb ) may be alternately repeated a plurality of times. And if the correction height of the object for each position is connected and graphed, the roll correction height (H _cr ) may be a shape corresponding to the shape of the roll 11 as shown in FIG. 6, for example, a semicircle, and the bottom surface correction height (H _cb ) ) may be in a shape that matches the upper surface of the frame 12, for example, in a straight line.

In addition, the processing unit 4000 may classify the correction height for each of the plurality of roll correction heights (H _cr ) and convert it into data. For example, the height measuring unit 1000 is a roll 11 located at one end of the plurality of rolls 11 located below the first transfer guide unit 5000a and the second transfer guide unit 5000b in the second direction. ), you can measure the height by starting the movement from the top. In this case, the roll positioned at one end is distinguished as the first roll, and the next roll as the second roll.

To this end, the processing unit 4000 divides the number of roll correction heights (H _cr ) sequentially generated based on the order of the sequentially generated bottom surface correction heights (H _cb ) and converts them into data. . For example, when the first floor correction height is generated, the roll correction height generated before that is identified as the first roll correction height, and the correction generated between the first floor correction height and the second floor correction height is identified. The height can be identified as the second roll compensation height and converted into data.

When data including a plurality of roll correction heights (H _cr ) and a plurality of bottom surface correction heights (H _cb ) are obtained in the processing unit 4000 for each position, the obtained plurality of roll correction heights (H _cr ) are relatively compared By doing so, it is possible to grasp the height alignment state for the plurality of rolls 11 . That is, it is possible to determine whether the plurality of rolls 11 are arranged at a uniform height, and whether the height of some of the rolls 11 is lower or higher than that of the other rolls. More specifically, whether the plurality of rolls 11 are arranged at a preset reference alignment height (A _s ) (see FIG. 6 ), at least some of the rolls 11 are less than or greater than the reference alignment height (A _s ) It can be determined whether the height of the plurality of rolls 11 is uniform or whether the height of some rolls 11 is different from the heights of other rolls regardless of the arrangement or the reference alignment height (A _s ).

In addition, in each of the plurality of bottom surface correction heights (H _cb ), the distance W at which the heights are maintained may be detected to detect the spacing (W) between rolls disposed adjacently. And when the detected plurality of intervals W are relatively compared, the alignment state of the plurality of rolls 11 in the horizontal direction, that is, in the second direction, can be grasped. In other words, it is possible to determine whether the plurality of rolls 11 are arranged at a uniform distance or whether some rolls are arranged closer or farther than other rolls.

At this time, since the processing unit 4000 has a plurality of roll correction heights (H _cr ) identified as the correction height of the roll, the height alignment of the roll 11 and the alignment state in the horizontal direction automatically through the processing unit 4000 . can be analyzed. That is, the processing unit 4000 may relatively compare the plurality of roll correction heights (H _cr ) to analyze which roll is higher or lower than the other rolls. In addition, the processing unit 4000 may compare the width W of the plurality of floor compensation heights H _cb to analyze how many rolls are arranged closer or farther than the other rolls. Of course, the operator may directly analyze the data obtained by the processing unit 4000 to determine the height alignment state and the horizontal alignment state for the plurality of rolls 11 .

As such, in the embodiment, the height measured by the height measurement unit 1000 (H _m ) is corrected by the correction value (V _c ) measured by the deformation detection unit 3000 to obtain the corrected height (H _c ), and this Use to check the alignment of the rolls. Accordingly, even if the height is measured through the height measurement unit 1000 in a state in which the measurement guide unit 2000 is bent, a highly reliable height of the roll 11 may be obtained. Accordingly, the alignment state of the plurality of rolls 11 can be more accurately identified.

In the above description, it has been described that the height measuring unit 1000 moves while measuring the height (H _m ) of the object for each position, and generating a correction value (V _c ) using the deformation sensing unit 3000 . However, the present invention is not limited thereto, and the height measuring unit 1000 may measure the height H _m of the object by position while repeating movement and stopping, and the deformation sensing unit 3000 may generate a correction value V _c . That is, when the height measuring unit 1000 is moved and stopped for a predetermined time, the height measuring unit 1000 measures the height (H _m ) of the object, and the deformation sensing unit 3000 generates a correction value (V _c ) It can be carried out by a method of moving a predetermined distance again after making it.

In the above description, it has been described that the height measuring unit 1000 moves while measuring the height (H _m ) of the object for each position, and generating a correction value (V _c ) using the deformation sensing unit 3000 . However, the present invention is not limited thereto, and the height measuring unit 1000 may measure the height H _m of the object by position while repeating movement and stopping, and the deformation sensing unit 3000 may generate a correction value V _c . That is, when the height measuring unit 1000 is moved and stopped for a predetermined time, the height measuring unit 1000 measures the height (H _m ) of the object, and the deformation sensing unit 3000 generates a correction value (V _c ) It can be carried out by a method of moving a predetermined distance again after making it.

7 is an example in which a processing unit generates a corrected height of an object for each location by a method according to a modified example of the embodiment, and graphs it.

In the above, it has been described that the processing unit 4000 corrects all the height values for each position of one roll 11 measured by the height measurement unit 1000 . Accordingly, as shown in FIG. 6 , the shape of the correction height H _cr for one roll 11 is derived as a semicircle shape that matches the shape of the roll 11 . However, the present invention is not limited thereto, and the processing unit 4000 may generate the roll correction height H _cr by correcting only the height of the uppermost surface among the height values for each position measured by the roll 11 . In other words, the processing unit 4000 may generate the roll correction height H _cr by correcting only the height of the highest value among the height values for each position measured by the roll 11 . And when the graph is drawn so as to extend the roll correction height (H _cr ) generated in this way as much as the diameter of the roll 11 , it may be, for example, as shown in FIG. 7 . In this way, the correction by applying the correction value (V _c ) to the height measured by the height measurement unit 1000 has the effect of simplifying the correction.

In addition, in the above-described embodiment, it has been described that one height measuring unit 1000 is installed in the measuring guide unit 2000 . However, the present invention is not limited thereto, and a plurality of height measuring units 1000 may be provided, for example, two. In addition, the two height measuring units (hereinafter, first and second height measuring units) may be disposed to face each other so that the main body 2100 of the measuring guide unit 2000 is positioned therebetween. That is, the first height measuring unit 1000 may be located on one side of the main body 2100 based on the first direction, and the second height measuring unit 1000 may be located on the other side of the main body 2100 .

In addition, the first height measuring unit 1000 may move toward the first driver 2210a , and the second height measuring unit 1000 may move toward the second actuator 2210b . At this time, a position sensor (hereinafter, a first position sensor) is mounted on the first driver 2210a, and a light emitting unit (hereinafter, a first light emitting unit) may be installed to face the first position sensor in the first height measuring unit. have. In addition, a position sensor (hereinafter, referred to as a second position sensor) may be mounted on the second actuator, and a light emitting unit (hereinafter, referred to as a second light emitting unit) may be installed to face the second position sensor in the second height measuring unit. And when the first and second height measuring units move in the second direction, it is effective to move so that the positions in the second direction are the same.

For a more detailed description, the height of the object measured using the first height measurement unit is the first height, the correction value generated by the first light emitting unit and the first position sensor is the first correction value, and the first height is the first height. The height corrected by the correction value is called the first correction height. In addition, the distance detected from the distance at which the roll correction height is the first roll correction height, the floor correction height is the first floor correction height, and the first floor correction height among the first correction heights of the object for each position is first named intervals.

Then, the height of the object measured by using the second height measuring unit is corrected to the second height, the correction value generated by the second light emitting unit and the second position sensor is corrected as the second correction value, and the second height is corrected as the second correction value. One height is called the second correction height. In addition, the distance detected from the distance at which the roll correction height is the second roll correction height, the floor correction height is the second floor correction height, and the second floor correction height among the second correction heights of the object for each position is a second value. named intervals.

When the two height measuring units 1000 are provided in this way, the alignment state of the roll 11 in the first direction can be grasped. That is, the horizontal alignment state in the roll extension direction may be determined by comparing the first roll correction height and the second roll correction height. At this time, the first roll correction height and the second roll correction height compared with each other are the correction heights for the same roll. For example, by comparing the first roll correction height with the second roll correction height for the first roll positioned at one end of the second direction, it can be determined whether the first roll is arranged at the same height in the first direction. have. In other words, it can be known whether the heights of one end and the other end, which are both ends in the first direction, of the first roll are the same or different from each other. In other words, it can be seen whether the first roll is arranged horizontally in the first direction, or whether the heights of both ends are arranged at different inclinations.

In addition, when the two height measuring units 1000 are provided in this way, it is possible to determine the horizontal alignment state in the arranging direction for each of the plurality of rolls. That is, by comparing the first interval and the second interval, it is possible to determine the horizontal alignment state in the arranging direction for each of the plurality of rolls. In this case, the first interval and the second interval compared with each other are the intervals between the same rolls. For example, both the first and second spacing may be the spacing between a first roll and a second roll that is immediately following the first. And when the first interval and the second interval are compared, it can be seen whether the intervals between the first roll and the second roll are the same in the first direction or different from each other. Through this, it may be determined whether at least one of the first roll and the second roll is disposed horizontally or inclined in the second direction.

8 is a three-dimensional view illustrating a state in which the transfer unit is mounted on the measurement guide unit according to an embodiment of the present invention. 9 is a front view illustrating a state in which the transfer unit is seated on the transfer guide unit according to an embodiment of the present invention. 10 is a side view illustrating a state in which the transfer unit is coupled to the main body of the measurement guide according to an embodiment of the present invention.

The first and second transfer guide portions 5000a and 5000b are means for guiding the movement of the first and second transfer portions 6000a and 6000b, and are respectively extended in the first direction as shown in FIGS. 1 and 2 . In addition, the first transfer guide part 5000a and the second transfer guide part 5000b are spaced apart from each other in a second direction intersecting the first direction in which the measurement guide part 2000 extends.

The separation distance between the first transfer guide part 5000a and the second transfer guide part 5000b may vary according to the length of the object 10 disposed therebetween in the second direction. In this case, the length of the object 10 in the second direction may vary depending on at least one of the number of rolls 11 to be aligned and the diameter of the rolls 11 . That is, the larger the number of rolls 11 and the diameter of the roll 11 to be checked for alignment, the greater the separation distance between the first transfer guide part 5000a and the second transfer guide part 5000b. Conversely, the smaller the number and diameter of the rolls 11, the smaller the separation distance is.

Each of the first and second transfer guide parts 5000a and 5000b has a predetermined height as shown in FIGS. 1, 2, 8 and 9, and is formed to extend in the first direction. A support 5100 and a support ( It is formed to extend in the extension direction of the 5100 and may include a guide rail 5200 installed on the support 5100 .

The support 5100 may have a plate shape having a predetermined height in the vertical direction (Z direction) and a predetermined thickness in the second direction. And an inclined surface may be provided on the upper portion of the support 5100 . In this case, the inclined surface may be inclined so as to be closer to the center of the second direction toward the upper side where the guide rail 5200 is positioned.

The guide rail 5200 is a means on which the transfer units 6000a and 6000b are seated, and extends in the first direction to guide the movement of the transfer units 6000a and 6000b. The guide rail 5200 may have, for example, a cylindrical bar shape as shown in FIGS. 1 and 9 . And the guide rail 5200 may be coupled to the upper portion of the support 5100 by a welding method. Of course, the coupling method of the guide rail 5200 and the support 5100 is not limited to the above-described example, and various methods that can be coupled to each other are applicable.

The first and second transfer units 6000a and 6000b are mounted on the measurement guide unit 2000 to slide along the first and second transfer guide units 5000a and 5000b. Each of these first and second transfer parts (6000a, 6000b) is a pair of fixing members 6100 spaced apart so that the guide rail 5200 is positioned therebetween as shown in FIGS. 8 and 9, both ends are one The transfer roller 6200 rotates in a state of being fastened to the pair of fixing members 6100, the measurement guide 2000 is arranged in the first direction so that the measurement guide 2000 can be positioned therebetween, and the measurement guide 2000 and the fastening and It includes detachable first and second fastening members 6310 and 6320 .

In addition, each of the first and second transfer units 6000a and 6000b is located on the outside of the fixing member 6100 to be connected to the transfer roller 6200 and provides rotational power to the transfer roller 6200. A driver 6600, one A mounting member 6400 installed on the pair of fixing members 6100 and mounted on the first and second fastening members 6310 and 6320, and transport guide parts 5000a and 5000b among the pair of fixing members 6100 It may include a separation preventing member 6500 formed to extend downwardly from the fixing member 6100 located outside the (see FIGS. 9 and 10).

Referring to FIG. 8 , each of the pair of fixing members 6100 may have a predetermined thickness in the second direction and may have a plate shape extending in the first direction. And the pair of fixing members 6100 are spaced apart in the second direction so that the guide rail 5200 and the transfer roller 6200 can be disposed therebetween.

The transfer roller 6200 is formed to extend in the second direction, and both ends are connected to a pair of fixing members 6100 so as to be rotatable. In addition, a plurality of conveying rollers 6200 may be provided, for example, two as shown in FIG. 8 , and the two conveying rollers 6200 are arranged in a line in the first direction in which the guide rail 5200 extends. That is, the two transfer rollers 6200 may be disposed to be spaced apart from each other in the first direction between the pair of fixing members 6100 .

As shown in FIG. 9 , the conveying roller 6200 may have a shape having an outer circumferential surface inclined in the second direction. That is, the conveying roller 6200 may have a shape that is closer to the center in the vertical direction from both ends in the second direction toward the center. More specifically, the conveying roller 6200 is connected to both ends of the horizontal member 6210 and the horizontal member 6210 extending in the second direction, and a pair of inclined members provided so that the outer diameter decreases toward the horizontal member. 6220 .

The horizontal member 6210 may have a cylindrical shape with no change in its diameter. In addition, a length of the horizontal member 6210 in the second direction may be provided to be smaller than that of the guide rail 5200 . In addition, the horizontal member 6210 is preferably positioned at the center of the pair of inclined members 6220 in the vertical direction.

A pair of inclined members 6220 are arranged in the second direction so that the horizontal member 6210 can be positioned therebetween. In addition, each of the pair of inclined members 6220 may have a cylindrical shape in which the outer diameter decreases toward the horizontal member 6210 as described above. Accordingly, the outer peripheral surface of each of the pair of inclined members 6220 is provided as an inclined surface that is closer to the center of the horizontal member 6210 in the vertical direction toward the horizontal member 6210 . In addition, as shown in FIG. 9 , each of the pair of inclined members 6220 may be formed to extend so that the other end, which is the opposite end of one end connected to the horizontal member 6210 , is located outside the guide rail 5200 .

When the conveying roller 6200 including such an inclined surface is seated on the guide rail 5200, as shown in FIG. 9, a pair of inclined member 6220 and the guide rail 5200 are in contact, and the horizontal member ( The 6210 may be seated to be spaced apart from the guide rail 5200 by a predetermined interval G. At this time, the pair of inclined members 6220 are in close contact with the guide rail 5200 by the weight of the measurement guide part 2000 and the transfer parts 6000a and 6000b. Accordingly, the guide rail 5200 is fitted between the pair of inclined members 6220 . Accordingly, it is possible to prevent a gap from occurring between the inclined member 6220 of the transfer roller 6200 and the guide rail 5200 in a direction crossing the extending direction of the guide rail 5200 . Accordingly, the transfer roller 6200 may be stably moved along the guide rail 5200 .

The mounting member 6400 is a means for supporting the first and second fastening members 6310 and 6320 , and may be installed on the pair of fixing members 6100 . As shown in FIG. 8 , the mounting member 6400 is spaced apart in the thickness direction, that is, in the first direction, of the fixing base 6410 and the measurement guide part 2000 formed to extend in the direction in which the pair of fixing members 6100 are arranged. It may include first and second connection members 6421 and 6422 mounted on the holder 6410 .

The fixing table 6410 has a plate shape having a predetermined area, and may be mounted on the fixing member 6100 to be positioned between the two conveying rollers 6200 as shown in FIG. 8 . Accordingly, an area between the transfer rollers 6200 in the space between the pair of fixing members 6100 may be covered by the fixing table 6410 .

The first and second connecting members 6421 and 6422 are means for supporting the fastening members 6310 and 6320, and are spaced apart in the first direction so that the measurement guide 2000 can be positioned therebetween as shown in FIG. are placed Each of the first and second connection members 6421 and 6422 may be provided to protrude upward from the upper surface of the holder 6410 . In addition, holes through which the fastening members 6310 and 6320 can pass are provided in each of the first and second connecting members 6421 and 6422 . In this case, the first hole provided in the first connection member 6421 and the second hole provided in the second connection member 6422 may face each other, and threads may be provided on inner peripheral surfaces of the first and second holes.

The first and second fastening members 6310 and 6320 are fastened to the mounting member 6400 so as to be spaced apart from each other in the thickness direction of the measurement guide part 2000 , that is, in the first direction. More specifically, each of the first and second fastening members 6310 and 6320 is installed to penetrate the first and second holes provided in the first and second connecting members 6421 and 6422, respectively. That is, the first fastening member 6310 is installed to pass through the first hole of the first connecting member 6421 , and the second fastening member 6320 is installed to pass through the second hole of the second connecting member 6422 . Accordingly, the first fastening member 6310 and the second fastening member 6320 are disposed to face each other. In addition, on the outer peripheral surfaces of each of the first and second fastening members 6310 and 6320, threads capable of being fastened with threads provided on the inner peripheral surfaces of the first and second holes may be provided.

The first and second fastening members 6310 and 6320 may move forward and backward to approach or move away from each other by a rotation operation. That is, the first and second fastening members 6310 and 6320 may advance so as to be close to each other, and each end may be inserted into the fastening groove 2110 provided in the body 2100 as shown in FIG. 8 . At this time, when the ends of the first and second fastening members 6310 and 6320 inserted into the fastening groove 2110 are brought into contact with the bottom surface of the fastening groove 2110 and further advanced and pressed, the first fastening member 6310 and the second fastening member 6320 are fixed to the main body 2100 . Accordingly, the transfer units 6000a and 6000b are mounted and fixed to the main body 2100 . Conversely, when at least one of the first and second fastening members 6310 and 6320 is moved backward so that the first and second fastening members 6310 and 6320 are separated from each other, the pressing force applied to the main body 2100 is released. Accordingly, the transfer units 6000a and 6000b may be separated from the main body 2100 .

As described above, as the transfer units 6000a and 6000b can be coupled and separated from the measurement guide unit 2000 , the transfer units 6000a and 6000b are installed in the measurement guide unit 2000 , that is, a position in the second direction. can be changed More specifically, the distance between the first transfer guide part 5000a and the second transfer guide part 5000b is adjusted and arranged according to the length of the second direction of the object 10 to be aligned. And, the first and second transfer parts (6000a, 6000b) are seated on the first and second transfer guide parts (5000a, 5000b) to be moved to slide the first and second transfer guide parts (5000a, 5000b). do. Accordingly, it is necessary to change the position where the first and second transfer parts 6000a and 6000b are installed in the measurement guide part 2000 according to the spacing between the first transfer guide part 5000a and the second transfer guide part 5000b. have.

Since the first and second transfer units 6000a and 6000b according to the embodiment can be fastened to and separated from the measurement guide unit 2000 , the position at which they are fastened to the measurement guide unit 2000 in the second direction can be changed. That is, according to the spacing between the first transfer guide part 5000a and the second transfer guide part 5000b, the position where the first and second transfer parts 6000a and 6000b are fastened to the measurement guide part 2000 can be changed. have. Accordingly, the height of the object 10 of various lengths may be measured.

The separation preventing member 6500 is a means for preventing the transfer roller 6200 seated on the guide rail 5200 from being separated from the guide rail 5200 . The separation preventing member 6500 may be provided to extend downwardly from the fixing member 6100 positioned outside the transport guide parts 5000a and 5000b among the pair of fixing members 6100 . That is, the separation preventing member 6500 may have a shape in which an end thereof protrudes downwardly of the fixing member 6100 as shown in FIG. 9 . At this time, the separation preventing member 6500 is provided with a length such that the end protruding downward of the fixing member 6100 can be positioned below the conveying roller 6200 as shown in FIG. 9 . More specifically, the separation preventing member 6500 is provided with a length whose end can be positioned below the inclined member 6220 constituting the conveying roller 6200 . Accordingly, when the transfer roller 6200 is seated on the guide rail 5200, as shown in FIG. 9 , the position of the separation preventing member and the transfer roller 6200 in the vertical direction overlaps with a predetermined length (O). .

In addition, when the transfer roller 6200 is seated on the guide rail 5200 as shown in FIG. 9 , the separation preventing member 6500 is fastened to the fixing member 6100 to be spaced apart from the guide rail 5200 in the second direction. At this time, the separation preventing member 6500 may be fastened to the fixing member 6100 through a separate fastening means such as a fixing bolt. .

In addition, as shown in FIG. 9 , the separation preventing member 6500 is preferably provided to be inclined at a predetermined angle so as to be closer to the center of the conveying roller 6200 in the second direction toward the lower part.

According to the separation preventing member 6500, when a force is applied to the measurement guide part 2000 in its extension direction, the transport roller 6200 of the transport parts 6000a and 6000b mounted on the measurement guide part 2000 is It can be prevented from being separated from the transfer guide parts 5000a and 5000b. That is, the separation preventing member 6500 is such that the guide rail 5200 positioned between the pair of inclined members 6220 of the transfer roller 6200 is outwardly out of any one of the pair of inclined members 6220 . escape can be prevented.

In more detail, the action of the separation preventing member 6500 will be described as follows. When a force is applied to the measurement guide part 2000 in its extension direction, at least a portion of the separation preventing member 6500 protruding downward of the transfer roller 6200 may be in contact with the side surface of the guide rail 5200 . When the separation preventing member 6500 is in contact with the side surface of the guide rail 5200 in this way, the departure preventing member 6500 acts as a stopper that blocks the movement of the entire transfer units 6000a and 6000b. Accordingly, even when a force is applied to the measurement guide unit 2000 , the width at which the transfer units 6000a and 6000b can move or flow is limited. Accordingly, it is possible to prevent the transfer parts 6000a and 6000b, that is, the transfer roller 6200 from being separated from the guide rail 5200 .

And, when the separation preventing member 6500 is fastened to the fixing member 6100, by adjusting the separation distance between the separation preventing member 6500 and the guide rail 5200 and fastening, the measurement guide unit 2000 is the second The width that can flow in the direction can be adjusted.

Hereinafter, with reference to FIGS. 1, 2, 5, 6 and 8, an operation of the alignment state detecting apparatus according to an embodiment of the present invention and a method of confirming the alignment state of the roll will be described. In this case, a segment of the casting equipment will be described as an object to check the alignment state, for example.

First, the object 10 to be aligned, that is, the segment is positioned between the first transfer guide part 5000a and the second transfer guide part 5000b as shown in FIGS. 1 and 2 . That is, one of the plurality of segments is positioned between the first transfer guide part 5000a and the second transfer guide part 5000b.

Next, as shown in FIGS. 1 and 2 , the first and second transfer units 6000a and 6000b are mounted on the measurement guide unit 2000 . To this end, the first transfer part 6000a and the second transfer part 6000b are disposed to be spaced apart by the distance the first transfer guide part 5000a and the second transfer guide part 5000b are spaced apart. And, after the measurement guide 2000 is positioned between the first and second fastening members 6310 and 6320 of the first and second transfer parts 6000a and 6000b, respectively, as shown in FIG. 8, the first and second The fastening members 6310 and 6320 are operated to be close to each other. At this time, each of the first and second fastening members 6310 and 6320 is inserted into the fastening groove 2110 provided in the main body 2100 of the measurement guide unit 2000 . In addition, the first fastening member 6310 and the second fastening member 6320 are moved closer to each other so that each end inserted into the fastening groove 2110 is in close contact with the bottom surface of the fastening groove 2110 . Accordingly, the first and second transfer units 6000a and 6000b are mounted on the measurement guide unit 2000 .

Thereafter, the height H _m of the object is measured while the height measurement unit 1000 installed on the belt 2300 of the measurement guide unit 2000 is moved along the measurement guide unit 2000 as shown in FIG. 5 . At this time, in the section between the first transfer guide unit 5000a and the second transfer guide unit 5000b, the height of the object while moving the height measuring unit 1000 from one end of the second direction to the other end direction (H _m) ) can be measured. In other words, in the section between the first transfer guide part 5000a and the second transfer guide part 5000b, the height measuring unit 1000 is moved from the second driver 2210b side to the first driver 2210a side. While doing this, the height (H _m ) of the object 10 may be measured. The height H _m of the object measured while the height measurement unit 1000 moves along the measurement guide unit 2000 is transmitted to the processing unit 4000 in real time.

And when the height of the object is measured by the height measuring unit 1000 as described above, a correction value V _c is generated through the deformation sensing unit 3000 . That is, as shown in FIG. 5A , the light emitting unit 3100 of the strain sensing unit 3000 installed in the height measuring unit 1000 continuously emits light Li toward the first driver 2210a. And, the position sensor 3200 installed in the first driver 2210a detects the reception height (P _r ) of the light (Li) emitted from the light emitting unit 3100, the reference height (P _s ) and the reception height (P) _r ), the height change value of the height measuring unit 1000 is detected by using the difference between the two. In addition, the position sensor 3200 generates or generates a correction value (V _c ) using the height change value.

For example, when the light Li irradiated from the light emitting unit 3100 is received below the reference height P _s as shown in FIG. , and a correction value (V _c ), which is a negative (-) value, is generated. In this way, the correction value V _c generated by the position sensor 3200 is transmitted to the processing unit 4000 in real time.

As such, the height measuring unit 1000 moves along the measurement guide unit 2000 to measure the height (H _m ) of the object for each position, and the deformation sensing unit 3000 is positioned according to the movement of the measurement guide unit 2000 . A star correction value V _c is generated, and these are transmitted to the processing unit 4000 .

The processing unit 4000 corrects the height (H _m ) of the object for each position measured by the height measurement unit 1000 with the correction value (V _c ) for each position generated by the deformation detection unit 3000 to correct the position-specific correction height ( H _c ) is created. Accordingly, the processing unit 4000 generates data including the corrected height H _c for each position in the second direction. In addition, the processing unit 4000 may graph the corrected height (H _c ) for each position, for example, as shown in FIG. 6 .

At this time, the correction height (H _c ) obtained by the processing unit 4000 is the roll correction height (H _cr ) for each of the plurality of rolls 11 , and the frame 12 supporting the plurality of rolls 11 . For the correction height, that is, it includes a plurality of bottom surface correction height (H _cb ). And the processing unit 4000 in each of the plurality of roll correction height (H _cr ), it is possible to classify the correction height of the roll number of the data.

In this way, when data including a plurality of roll correction heights (H _cr ) and a plurality of floor correction heights (H _cb ) for each position is obtained in the processing unit 4000 , the obtained plurality of roll correction heights (H _cr ) are relatively By comparing, it is possible to determine the height alignment state for a plurality of rolls. That is, it is possible to determine whether the plurality of rolls 11 are arranged at a uniform height, whether the height of some rolls 11 is lower or higher than that of other rolls, and the like.

In addition, the processing unit 4000 may detect a distance W between rolls disposed adjacent to each other by detecting a distance at which the height is maintained in each of the plurality of floor compensation heights H _cb . And by relatively comparing the plurality of detected intervals (W), it is possible to determine the alignment state in the horizontal direction, that is, the second direction with respect to the plurality of rolls (11). That is, the processing unit 4000 may analyze how many rolls 11 are arranged closer or farther than the other rolls 11 .

As such, in the embodiment, the height (H _m ) of the object measured by the height measurement unit 1000 is corrected with the correction value (V _c ) measured by the deformation detection unit 3000 to generate a correction height (H _c ), and , and use it to determine the alignment of the rolls. Accordingly, even if the height is measured through the height measurement unit 1000 in a state in which the measurement guide unit 2000 is bent, it is possible to obtain data on the height of the roll 11 with high reliability. Accordingly, the alignment state of the plurality of rolls 11 may be more accurately identified, and the plurality of rolls 11 may be aligned more accurately. Therefore, it is possible to prevent the occurrence of defects in the product, for example, cast steel due to misalignment of the rolls 11 .

Then, the distance between the first transfer unit 6000a and the second transfer unit 6000b is adjusted according to the length of the object 10 determined by at least one of the number and diameter of the plurality of rolls, and the measurement guide unit 2000 is mounted on it. can do it Accordingly, the height can be measured regardless of the length variation of the object 10 .

In addition, as the conveying rollers 6200 of the conveying parts 6000a and 6000b are provided to have the inclined member 6220, and the conveying parts 6000a and 6000b are provided with the separation preventing member 6500, the conveying parts 6000a, 6000b ) can be stably moved along the transfer guide portion (5000a, 5000b). That is, the conveying roller 6200 can move stably without being separated to the outside of the conveying guide parts 5000a and 5000b, and thus the height measurement using the height measuring unit 1000 can be stably performed.

1000: height measurement unit 2000: measurement guide unit
2100: body 2300: belt
3000: deformation detection unit 3100: light emitting unit
3200: position sensor 5000a: first transfer guide part
5000b: second transfer guide unit 6000a: first transfer unit
6000b: second transfer unit

Claims (19)

a measurement guide part extending in a direction in which a plurality of rolls of the object are arranged and positioned above the object;
a height measuring part connected to the measuring guide part so as to be movable along the measuring guide part and to measure the height of the object for each location;
a deformation detection unit capable of detecting a height change value of the height measurement unit for each position and generating a correction value from the height change value;
and a processing unit that corrects the height of the object with the correction value and generates a corrected height of the object for each position. The method according to claim 1,
The deformation detection unit detects the height change value using a difference between a preset reference height and the height of the height measurement unit,
The deformation detection unit has a magnitude of the height change value and generates the correction value to have a negative (-) or positive (+) value according to a height change direction of the height measurement unit. 3. The method according to claim 2,
The deformation detection unit,
a light emitting unit installed in the height measuring unit; and
A position sensor installed in the measurement guide unit to face the light emitting unit so that the light emitted from the light emitting unit is received;
The position sensor is an alignment state detection device for detecting the height of the height measuring unit by using the height of the received light. 4. The method of claim 3,
The measurement guide part,
a body extending in a direction in which the plurality of rolls are arranged;
first and second actuators spaced apart from each other in the extension direction of the main body and installed on the main body; and
a belt having both ends connected to the first and second actuators so as to move in the extension direction of the main body by the operation of the first and second actuators; including,
The height measuring part is fastened to the belt so as to be located on at least one of one side and the other side in a direction crossing the extension direction of the main body,
The position sensor is an alignment state detection device installed in at least one of the first and second actuators. 5. The method according to claim 4,
The position sensor is located on the upper side of the upper surface of the body,
The light emitting unit is installed to protrude from the height measuring unit alignment state detection device. 5. The method according to claim 4,
first and second conveying guide portions spaced apart from each other in the arranging direction of the plurality of rolls;
To be mounted on the main body so that each of them is seated on the upper portion of the first and second transfer guides and slides, the distance between each other is adjusted according to the distance between the first transfer guide and the second transfer guide. First and second transfer units capable of; Alignment state detection device comprising a. 7. The method of claim 6,
Each of the first and second transfer units,
and a conveying roller connected to the main body so as to be seated on each of the first and second conveying guide parts and rotated;
The conveying roller,
a horizontal member extending in a direction crossing each of the extending directions of the first and second transfer guides; and
Alignment state detection device comprising a; is connected to both ends of the horizontal member, the inclined member provided so that the outer diameter decreases toward the horizontal member. 8. The method of claim 7,
Each of the first and second transfer units,
a pair of fixing members spaced apart from each other in the extending direction of the conveying roller and connected to both ends of the conveying roller; and
The first and second parts are spaced apart in a direction crossing the extension direction of the main body and connected to each of the pair of fixing members so that the main body can be positioned therebetween and each can be moved toward the main body or opposite to the main body. Alignment state detection device comprising a; two fastening members. 9. The method of claim 8,
Each of the first and second transfer units,
and a separation prevention member installed on the fixing member so as to be positioned outside each of the first and second transfer guide portions opposite to the space between the first transfer guide part and the second transfer guide part,
The separation preventing member has a shape extending downward from the fixing member,
The separation preventing member is an alignment state detection device formed so that the end located below the fixing member is located below the transfer roller. 10. The method of claim 9,
The separation preventing member is an alignment state detection device in a shape inclined toward the lower side to be closer to the center of the extending direction of the conveying roller. A method of detecting an alignment state with respect to an object including a plurality of rolls, the method comprising:
measuring the height of the object;
detecting a height of a height measuring unit measuring the height of the object;
generating a correction value using the height of the height measuring unit;
generating a corrected height of the object by using the height of the object and the correction value; and
and determining an alignment state using the correction height. 12. The method of claim 11,
The process of measuring the height of the object includes the process of measuring the height of the object at a plurality of positions in a direction in which the plurality of rolls are arranged,
The process of detecting the height of the height measuring part includes the process of detecting the height of the height measuring part at the plurality of positions,
The generating of the correction value includes generating the correction value at the plurality of positions. 13. The method of claim 12,
The process of generating the correction value is
detecting a height change value of the height measurement unit using a difference between a preset reference height and a height of the height measurement unit; and
The process of determining a sign as a negative (-) or positive (+) value, and generating a correction value having a magnitude of the height change value;
The process of determining the sign is,
generating the correction value as a negative (-) value when the height of the height measuring unit is detected below the reference height; and
and generating the correction value as a positive (+) value when the height of the height measuring unit is detected above the reference height. 14. The method of claim 13,
The generating of the corrected height of the object includes adding the correction value to the height of the object. 15. The method according to any one of claims 12 to 14,
The process of generating the corrected height of the object includes the process of generating a plurality of roll correction heights that are corrected heights for each of the plurality of rolls,
The step of determining the alignment state includes determining the alignment state in the height direction with respect to the plurality of rolls by relatively comparing the plurality of roll correction heights. 16. The method of claim 15,
The process of generating the roll compensation height is,
and generating by using a height of a highest value among a plurality of heights measured at the plurality of positions for each of the plurality of rolls. 17. The method of claim 16,
The object includes a frame supporting the plurality of rolls under the plurality of rolls,
The process of generating the corrected height of the object includes a plurality of heights of the upper surface of the frame measured at a plurality of positions in a direction in which the plurality of rolls are arranged and the corrected height for the upper surface of the frame by using the correction value. The process of generating a correction height of the bottom surface of
Detecting a distance at which the plurality of bottom surface correction heights are maintained, and detecting a gap between adjacent rolls;
The step of determining the alignment state includes the step of determining the alignment state in the arranging direction for a plurality of rolls by comparing the spacing between the rolls. 18. The method of claim 17,
The process of generating the roll compensation height is,
generating a first roll correction height by using a first height of the object measured using a first height measuring unit and a first correction value generated from the height of the first height measuring unit; and
The second height of the object measured using the second height measuring unit disposed to face the first height measuring unit in the extending direction of the Sangli roll and the second correction value generated from the height of the second height measuring unit are used The process of creating a 2-roll compensation height; including,
The determining of the alignment state includes determining a horizontal alignment state in a roll extension direction by comparing the first roll correction height and the second roll correction height. 19. The method of claim 18,
The process of generating the bottom surface correction height is,
generating a first floor correction height using the first height and the first correction value; and
generating a second floor correction height using the second height and the second correction value; including,
The process of detecting the gap between the rolls includes the process of detecting the first distance by detecting the distance at which the first floor corrected height is maintained, and the second gap by detecting the distance at which the second floor corrected height is maintained. It includes the process of detecting
The step of determining the alignment state includes comparing the first interval and the second interval to determine a horizontal alignment state in an arranging direction for each of the plurality of rolls.

Images