KR20020033239A - Apparatus for aligning side face of steel plate - Google Patents

Abstract

PURPOSE: An apparatus for aligning a side face of a bending measuring steel plate is provided to minimize cutting error of the side face of the steel plate through automatic alignment of the steel plate, improve operation efficiency through automatic operation, and minimize generation of scraps and reduce manufacturing cost through accurate cutting. CONSTITUTION: In an apparatus for automatically aligning a skew or distorted steel plate(s) when transferring the steel plate(s) on a roller table(200), the apparatus for aligning a side face of a bending measuring steel plate comprises a lifting unit lifting the steel plate(s) on the roller table(200); a steel plate transferring and measuring unit laterally moving the steel plate(s) and measuring a width of the steel plate(s); a fine adjusting unit(60) finely adjusting the center of the laterally moved steel plate(s); and a control computer(100) finely adjusting the steel plate(s) to a position conforming to a predetermined cutting center by comparing a detected width of the steel plate with the preset width of the steel plate(s).

Description

Side alignment device for bending blade {APPARATUS FOR ALIGNING SIDE FACE OF STEEL PLATE}

The present invention relates to an apparatus for automatically aligning a meandering or twisted iron plate when the iron plate is transported on a roller table, and more particularly, by raising the meandering or twisted iron plate on a roller table and then closely attaching the iron plate to a side stand. The present invention relates to a side alignment device for a bending measurement blade which is able to automatically align the side of an iron plate easily by aligning and performing centering through right and left fine adjustment.

In general, the iron plate (s) produced in the steel mill is moved to the subsequent process by moving on the roller table 200 is provided with a plurality of rollers 202, the demand is cut to the desired width and length is shipped as a finished product. In this process, the iron plate s is transferred to the roller table 200, and the roller table 200 has the iron plate s to the correct size in a subsequent process by correcting meandering and twisting of the iron plate s moved thereon. ) Has a steel plate automatic alignment device 220 that can be cut.

1, there is shown a related art iron plate automatic alignment device 220. The conventional automatic alignment device 220 is a plurality of ball screw 225 is mounted between the roller 202 of the roller table 200 while maintaining a constant interval, the motor for driving the ball screw (225) ( 227 and reduction gears 230 are provided. The ball screw 225 has a movable block 240 screwed therein, and the movable block 240 has a cylinder (not shown) embedded therein so as to have an upper portion of the roller table 200. It is configured to lift the iron plate (s) to the side, the rod (not shown) of the cylinder is provided with an electromagnet 248 is to attach the iron plate (s).

As shown in a) of FIG. 1, the iron plate automatic alignment device 220 attaches the iron plate s entered to the roller table 200 to the electromagnet 248 and then raises the cylinder by operating the cylinder b. By rotating the ball screw 225 by driving the motor 227 as shown in the), to move the iron plate (s) attached to the electromagnet 248 to the cutting reference line, and then finely adjust the center of the center manually As shown in c), after the iron plate s is aligned with the cutting reference line, the electromagnet 248 is separated from the iron plate s to repeat the process of returning the moving block 240 to an initial operation state. .

However, the conventional apparatus 220 as described above operates the motor 227 by the manual operation of the operator, and operates the cylinder to move the iron plate s laterally on the roller table 200 to the side of the iron plate s. By aligning, it is difficult to properly align the iron plate (s) twisted in the longitudinal direction as a whole, and a lot of time is spent on the alignment work to reduce productivity and work efficiency. In addition, the alignment of the steel sheet (s) has a large error according to the skill of the operator, so the reliability of the work is lowered, and accordingly, excessive cutting margin is applied, thereby generating excessive scrap and raising the manufacturing cost.

The present invention is to solve the conventional problems as described above, the object is to minimize the iron plate side cutting error through the automatic alignment of the iron plate, improve the efficiency of the operator due to the automation of the operation, to the correct center alignment of the iron plate Due to the precise cutting is possible to minimize the occurrence of scrap and to reduce the manufacturing cost is to provide an improved side alignment device of the bending plate.

1 is an explanatory view showing a side alignment device of a bending measuring plate according to the prior art,

a) is a process of attaching the iron plate entered the roller table to the electromagnet and then raising it;

b) moves the iron plate attached to the electromagnet to the cutting reference line and then finely adjusts the position,

c) is the process by which the electromagnet returns to its initial operating state after alignment with the cutting baseline;

2 is a plan view showing a side alignment device of the bending measuring blade according to the present invention;

Figure 3 is an overall perspective view showing a side alignment device of the bending measuring blade according to the present invention;

4 is a partially exploded perspective view showing a lifting device provided in the side alignment device of the bending measuring plate according to the present invention;

Figure 5 is an exploded perspective view showing a portion of the sheet conveying and measuring device and the fine adjustment device provided in the side alignment device of the bending measuring plate according to the present invention;

6 is an explanatory view showing the operating state of the side alignment device of the bending blade according to the present invention, the step of raising the iron plate on the roller table by the lifting device;

Figure 7 is a process showing the state of the iron plate transfer by the plate feed and measuring device in the side alignment device of the bending measuring plate according to the present invention;

8 is a step showing a state in which the position measurement of the iron plate by the plate feed and measuring device in the side alignment device of the bending measuring plate according to the present invention;

9 is an exploded perspective view illustrating a guide feeder in the side alignment device of the bending blade according to the present invention;

Figure 10 is an exploded perspective view showing the pedestal of the plate feed and measuring device in the side alignment device of the bending measuring plate according to the present invention;

11 is an overall configuration diagram for explaining the operation relationship between the side alignment device of the bending measuring plate according to the present invention.

Explanation of symbols on the main parts of the drawings

5 ..... position detection sensor 10 ..... elevator

15 .... platform 19 ....

22 ..... rolling roller 30 ..... sheet metal conveying and measuring device

32 ..... Fixture 34 .....

36 ..... drive motor 42 ..... reducer

47 ..... Common axis 59 ..... Position detection sensor

60 ..... Fine-tuning device 62a, 62b ... Guide post

66 ..... Pulley 68 ..... Chain

80 ..... rack gear 82 ..... pinion gear

91 ..... holding 100 .... control computer

110 .... Top Computers 200 .... Roller Tables

202 .... Roller S ..... Iron plate

In order to achieve the above object, the present invention provides a device for automatically aligning a meandering or twisted iron plate when the iron plate is transported on a roller table, comprising a lifting device for raising the iron plate on a roller table, and the iron plate laterally. It is provided with a plate feed and measuring device for moving the steel plate and measuring the width of the iron plate, and fine adjustment device for fine-adjusting the center of the iron plate moved to the side, and compares the detected iron plate width and the size of the previously set iron plate width And a control computer for fine-adjusting the iron plate to a position corresponding to a predetermined cutting center.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The side alignment device 1 of the bending measuring plate according to the present invention, as shown in Figures 2 and 3 as a whole, raise the iron plate (s) on the roller table 200, and moves the iron plate (s) in the lateral direction By measuring the width of the iron plate (s), and compares the detected iron plate (s) width and the size of the preset iron plate (s) standard width to finely adjust the iron plate (s) to a predetermined cutting center position. .

To this end, the side alignment device 1 of the bending measuring blade of the present invention detects when the iron plate (s) enters the roller table 200, a plurality of position detection sensors for transmitting this electrical signal to the control computer (5) are in front of and behind the roller table 200. As shown in FIG.

In addition, the elevator 10 has a lifting device 10 for raising the iron plate s on the roller table 200, and the lifting device 10 has a lower pit of the roller table 200 as shown in detail in FIGS. 4 and 6. A lift table 15 is located at 12, and hydraulic cylinders 17 are provided at lower corners of the lift table 15 so as to lift the lift table 15.

In addition, the lifting platform 15 is formed with a plurality of uprights 19 to the upper side, these uprights 19 can be lowered to the space between the rollers 202 of the roller table 200, respectively, On the upper end of the vertical stand 19, a plurality of rolling rollers 22 are rotatably mounted in the longitudinal direction of the roller 202, respectively. The rolling roller 22 is for moving the steel plate (s) to the side of the roller table 200 when the upper plate (s) is supported on the upper side thereof so that the rotation direction is made to the side of the roller table 200. It is mounted on, and can be rotatably mounted to the vertical stand 19 through the bush 24 or the like for smooth rolling operation.

In addition, the platform 15 has a width slightly smaller than the length of the roller 202 of the roller table 200, but has a substantially the same size, so that the platform 15 is raised so that the vertical platform 19 is formed by the rollers 202. When the upper level of the rolling rollers 22 is raised higher than the upper level of the roller 202 of the roller table 200, the rolling rollers 22 of the riser 19 are rollers 202. It is configured to be distributed over most of the longitudinal direction of). Since the rolling rollers 22 of the vertical stand 19 are distributed mostly to the side of the roller table 200 in this way, the steel plate s on the roller table 200 is rolled by the rolling rollers 22. When lifted from), it is supported by the rolling rollers 22 and is movable laterally of the roller table 200.

As described above, when the rod 17a of the hydraulic cylinder 17 descends, the lifting device 10 lowers the lifting table 15 and the vertical stand 19 so that the upper level of the rolling roller 22 is lower than that of the roller table 200. Although lower than the roller upper level, when the hydraulic cylinder 17 is operated to raise the platform 15 and the vertical platform 19, the upper level of the rolling roller 22 is higher than the roller upper level of the roller table 200 It is to ensure the movement of the iron plate (s).

In addition, the plate feed and measurement device 30 for measuring the width of the plate (s) by moving the plate (s) in the lateral direction is provided, the plate feed and measurement device 30 is shown in detail in FIG. As described above, the fixed table 32, the movable table 34, and the driving motor 36 for operating the movable table 34 are provided. The iron plate conveying and measuring device 30 is located on one side of the roller table 200 has a fixing bar 32 for setting a reference line, the fixing bar 32 is the longitudinal direction (steel plate longitudinal direction of the roller table 200) And a structure that is integrally fixed to the upper side of the pair of guide posts 62a and 62b of the fine adjustment device 60, which will be described later, and is simultaneously linked with the guide posts 62a and 62b. Achieve.

In addition, the movable table 34 opposite to the fixing table 32 is disposed in parallel with the fixing table 32 at the other side of the roller table 200, and is movable in the side direction of the roller table 200. To this end, the movable table 34 has a structure that is movable on the upper side of the pair of guide bars 62a and 62b of the fine adjusting device 60, and the movable table 34 has respective guide bars 62a. The pulleys 66 are pivotable in a space inside the guide poles 62a and 62b, respectively, connected to an upper portion of the pulley 66 that is movable back and forth within the concave recesses 64a and 64b of the 62b. It is connected to the chain 68 wound around a plurality of sprockets (70a, 70b) so as to move in accordance with the movement of the chain 68, guide rollers (72a) (72b) on both sides of each pulley (66) A plurality of them are rotatably mounted so as to fit in guide grooves 74a and 74b formed on both sides of the guide grooves 64a and 64b of the respective guide stands 62a and 62b.

In addition, the chain 68 is configured to receive the power from the drive motor 36 and the reducer 42 mounted on the base 40 provided on one side of the fixing stand 32, for this purpose the drive motor 36 Shaft 36a is connected to the input shaft (not shown) of the reducer 42, and the output shaft 42a of the reducer 42 is connected to the sprocket 45, and is mounted to be rotatable on the lower side of the base 40. It is connected to the central sprocket 50 of the shaft 47 through the chain 52 to rotate the shaft 47 forwards and backwards, and both ends of the shafts 47 are respectively provided with guides 62a and 62b. The drive motor 36 is transmitted to the chain 68 through the shaft 47 and the sprocket 70a by being connected to one of the sprockets 70a on the inner side through the one side surface. Thus, the moving table 34 is moved upwardly through the pulley 66 to the side of the roller table 200, and a pair of guide bars 62a and 62b. It has a structure that is moved from.

Therefore, the movable table 34 is located at the upper side of the roller table 200, and the upper edge of the roller 202 of the roller table 200 is located at the lower edge 34a, respectively, but does not contact the arc shape. A plurality of grooves 55 are formed, and the pair of guide bars 62a and 62b on which the movable table 34 is mounted has its upper level lower than that of the rollers of the roller table 200 so that the roller table 200 can be formed. It does not interfere with the iron plate (s) moving on the). That is, the lower level of the movable table 34 is higher than the roller of the roller table 200 because the movable table 34 is maintained from the guide tables 62a and 62b through the pulley 66. It is maintained and movable, and the guide posts 62a and 62b are positioned at a lower level than the upper roller top of the roller table 200 so that the steel plate S can move on the roller table 200.

In addition, when the platform 15 and the vertical platform 19 of the elevating device 10 is raised to the lower edge 34a of the movable table 34, a recess portion 57 into which a portion of the vertical table 19 can be inserted. ) Is formed in accordance with the number of the vertical stand (19). Due to the concave groove 57, the vertical stage 19 can be raised above the roller upper height of the roller table 200.

And, when the iron plate (s) is moved in the lateral direction, the sensor 59 for measuring the width of the iron plate (s) located between the movable table 34 and the fixed table 32 is provided, the sensor Reference numeral 59 is a pulse generator (PLG, Pulse Generator) disposed in series with the end of the shaft (36a) of the drive motor (36).

The sensor 59 counts the number of times the shaft 36a of the drive motor 36 is rotated while the moving table 34 moves, and calculates the moving distance of the moving table 34 using the count value. As a result, this is subtracted from the predetermined distance between the initial position (home position) of the movable table 34 and the fixed base 32, the distance moved by the movable table 34, the current position of the movable table 34 and the fixed table The distance with (32) can be calculated.

In addition, the fine adjustment device 60 and the control computer 100 for fine-adjusting the iron plate (s) to a predetermined position by comparing the detected iron plate (s) width and the size of the pre-set iron plate (s) width. ), The fine adjusting device 60 finely adjusts the pair of guide posts 62a and 62b in the lateral direction of the roller table 200.

The fine adjustment device 60 has a rack gear 80 is formed at the bottom of one side end of the pair of guide posts 62a and 62b, respectively, a pair of pinion gears that are geared to the rack gear 80, respectively. (82), the pinion gears (82) are connected through one common shaft (84), the shaft (84) is connected to the shaft (86a) with a drive motor (86) located at one end thereof. It has a structure. Accordingly, when the fine adjustment device 60 rotates the common shaft 84 forward and reverse by the operation of the driving motor 86, the pinion gears 82 and the rack gear 80 connected to the shaft 84 are rotated. The guides 62a and 62b can be adjusted in position. Then, the sensor 87 for detecting the rotation of the drive motor 86 is located on the other side of the common shaft 84 is configured to detect the displacement amount of the fine adjustment device (60).

In addition, the driving motor and its connecting parts are respectively mounted on the upper end of the support 91 and maintained at a predetermined height, and the other side of the guide racks 62a and 62b is the rack gear 80 and the pinion gear 82. In order to smoothly move the guide stand (62a) (62b) by the position of the roller support 88 is mounted, the roller support 88 is shown in Figure 10, the guide support (62a) Lower surfaces of 62b are provided with rotatable rollers 90 respectively mounted thereon.

6 and 8, the roller pedestal 88 is fixed on the lower support 201 of the roller table 200 to form the same level as the pinion gear 82. 62a) and 62b are horizontally maintained, and are configured to be finely adjusted from side to side in that state.

On the other hand, the control computer 100 is a facility control computer for automatically controlling the roller table 200, which is, as shown in Figure 11, from the upper computer 110 to obtain information about the size of the iron plate (s) Receiving an input, when receiving a signal indicating the entry of the iron plate (s) from the position detection sensor 5 provided in the roller table 200, by operating the lifting device 10 to raise the lifting table 15 and the vertical stand 19 It raises and raises an iron plate s on the rolling roller 22 of the riser 19. As shown in FIG. In such a state, the iron plate s is moved to the fixing base 32 through the plate feeding and measuring device 30, and the width of the iron plate s is measured between the movable table 34 and the fixing unit 32. On the basis of this, by driving the drive motor 86 of the fine adjustment device 60, the guide table 62a (62b), the fixed table 32, the moving table 34 and the iron plate therebetween by the amount calculated in advance. They are automatically controlled according to a series of programs to fine-tune the position of (s) at the same time.

The side table aligning device 1 of the bending measuring blade of the present invention configured as described above, the roller table 200 in a state in which the movable table 34 is kept at the first position and the distance between the fixing table 32 is maximized. When driving, the iron plate (s) is moved to the upper side of the roller table 200, the position detection sensor (5) is detected and the operation of the roller table 200 is stopped.

In this state, the control computer 100 operates the lifting device 10 so that the rod 17a of the hydraulic cylinder 17 is lifted up, the lifting platform 15 and the riser 19 are raised, and the riser 19 Lift the iron plate (s) on the rolling roller (22) of. In this state, when the plate feed and measuring device 30 is operated, the chain 68 embedded in the guides 62a and 62b is rotated through the driving motor 36 of the plate feed and measuring device 30, This moves the movable table 34 to the fixing table 32 through the pulley 66, and the steel plate s is fixed on the rolling roller 22 of the vertical table 19 by the moving of the movable table 34. It is moved to the (32) side.

Such a state is shown in FIG. 7, and when the iron plate s is completely moved toward the fixing stand 32, it is moved to the state shown in solid line in the state shown by the dotted line in FIG. s) is sandwiched between the movable table 34 and the fixed table 32, and the movable table 34 is stopped.

During this process, the pulse signal indicating the moving distance of the mobile stand 34 is continuously transmitted from the width measuring sensor 59 to the control computer 100, and the control computer 100 calculates the calculated mobile stand 34. Subtract the moving distance of from the distance between the first moving table 34 and the fixing table 32 to measure the actual width of the iron plate (s). The actual measurement width of the iron plate (s) is larger than the standard width of the iron plate (s) provided from the upper computer 110, which is due to the deviation of the steel plate (s) due to the processing deviation during processing of the iron plate (s). Deformation is a main factor, and center position adjustment of the iron plate s is performed by using the actual width of the iron plate s.

Since the position adjustment of the center of the steel plate s is set in advance so that the stator 32 is set based on the zero point in the width direction with respect to the width cutting device (not shown) in a subsequent process, the stator 32 and the movable table The current position of the iron plate s located between the 34 is also applied to the cutting position in the width cutting device (not shown) of the subsequent step.

Therefore, in order to cut the iron plate s having a desired size from the center portion of the iron plate s in the width cutting device of a subsequent process, the center position adjustment of the iron plate s on the roller table 200 is indispensable. do. If the cutting plate 32 enters the width cutting device in the state where the iron plate s is positioned as described above, the cutting edge is not cut at the edge of the iron plate s currently positioned on the holder 32. In other words, only the side edges on one side of the opposite side will be cut off.

Therefore, in order to correct the problem that one surface is cut in this way, it is necessary to finely adjust the position of the current iron plate s so as to cut the two side surfaces at the center of the iron plate s, and the fine adjustment distance is as follows. Obtained by

Fine adjustment distance = (actual width of steel plate-width of steel plate) / 2,

In the above formula, subtracting the steel plate standard width from the actual measurement width of the steel plate (s), it is possible to calculate the deformation width of the iron plate actually deformed from the exact iron plate (s) standard, divided by two, one side edge It is possible to calculate the deformation amount for. Therefore, by moving the iron plate in the lateral direction of the roller table 200 as much as this fine adjustment amount, the central portion of the correct iron plate (s) can enter the width cutting device of the subsequent process.

To this end, the fine adjustment device 60 is operated so that the drive motor 86 rotates the shaft 84 in a predetermined direction, and the pinion gear 82 is rotated through the common shaft 84 so that the rack gear ( The pair of guide bars 62a and 62b, the fixing table 32, the moving table 34, and the iron plates s therebetween are finely positioned at the same time by an amount calculated in advance through 80. Such a series of operations is performed according to a program previously input to the control computer 100.

When the fine adjustment is completed in this manner, the lifting device 10 is operated to lower the lifting table 15 and the vertical stand 19 to lower the iron plate s on the roller 202 of the roller table 200. When the plate feed and measurement device 30 and the fine adjustment device 60 are further operated to move the moving table 34 and the fixed table 32 away from the plate plate s, and then operate the roller table 200, The iron plate s enters into the adjusted position toward the width cutting device of the subsequent process.

According to the present invention as described above, by raising the meandering or twisted iron plate (s) on the roller table 200, and then in close contact with the side fixtures to align the iron plate (s) in a straight line, centering through the left and right fine adjustment By performing the iron plate (s) can be easily aligned automatically. Therefore, it minimizes the side cutting error of the iron plate (s) through the automatic alignment of the iron plate (s), improve the operator's efficiency through the automation of the work, and accurate cutting due to the accurate center alignment of the iron plate (s) scrap Improved effects are obtained to minimize generation and reduce manufacturing costs.

Claims (11)

In the case of conveying the iron plate s on the roller table 200, in the apparatus for automatically aligning the meandering or twisted iron plate s, the elevating device 10 for raising the iron plate s on the roller table 200 is provided. And an iron plate conveying and measuring device 30 for moving the iron plate s in the lateral direction and measuring the width of the iron plate s, and finely adjusting the center of the iron plate s moved laterally. A control computer having an apparatus 60, which compares the detected iron sheet s width with a preset iron sheet s width and finely adjusts the iron sheet s to a position corresponding to a predetermined cutting center. Side alignment device of the bending plate, characterized in that it comprises (100). The roller table 200 of claim 1, further comprising a plurality of position detection sensors 5 which detect when the iron plate s enters the roller table 200 and transmit an electrical signal to the control computer 100. Side alignment device of the bending blades characterized in that the front and rear of the). According to claim 1, The lifting device 10 is a lifting table 15 is positioned on the lower feet 12 of the roller table 200, the hydraulic cylinders 17 on the lower side four corners of the lifting table 15, respectively. Are provided to raise and lower the platform 15, the platform 15 is formed with a plurality of vertical tables 19 to the upper side, the upper end of these vertical tables 19 in the longitudinal direction of the roller 202, respectively A plurality of rolling rollers 22 are mounted to be rotatable, while the rolling direction of the rolling rollers 22 is mounted on the riser 19 so as to be directed to the side of the roller table 200. Lateral alignment of measuring blades. 4. The lifting table 15 has a width that is somewhat smaller than the length of the roller 202 of the roller table 200, but has approximately the same size, so that the lifting table 15 is raised so that the vertical table 19 is roller. When the upper level of the rolling rollers 22 is raised higher than the upper level of the roller of the roller table 200, the rolling rollers 22 of the riser 19 are moved by the roller ( A device for lateral alignment of a bending blade, characterized in that it is configured to be distributed over most of the longitudinal direction of the 202. According to claim 1, wherein the iron plate conveying and measuring device 30 is located on one side of the roller table 200 has a fixing table 32 for setting a reference line, the moving table 34 is opposed to the fixing table 32 ), The movable table 34 has a structure that is movable on the upper side of the pair of guide bars 62a, 62b of the fine adjustment device 60, while the movable table 34 has a pair of guide bars ( A pair of guide rods 62a and 62b are moved to the side of the roller table 200 by the operation of the driving motor 36 through the pulley 66 and the chains 68 provided inside the 62a and 62b, respectively. Side alignment device of the bending blades characterized in that configured to. According to claim 5, When the platform 15 and the vertical platform 19 of the lifting device 10 is raised to the lower edge (34a) of the movable table 34, a portion of the vertical platform 19 can be inserted Side concave alignment device of the bending blade, characterized in that the concave groove 57 is formed in accordance with the number of the plurality of vertical stage (19). 6. A sensor according to claim 5, further comprising a sensor (59) for measuring the width of the iron plate (s) located between the movable table (34) and the fixed table (32), the sensor (59) of the drive motor (36). And a pulse generator (PLG) arranged successively on the shaft (36a). 2. The pair of guide posts 62a and 62b according to claim 1, wherein the fine adjustment device 60 is used to finely adjust the pair of guide posts 62a and 62b in the lateral direction of the roller table 200. A rack gear 80 is formed at each lower side of the lower end, and has a pair of pinion gears 82 geared to the rack gears 80, respectively. The pinion gears 82 have a common shaft ( 84) and the shaft has a structure in which the driving motor 86 is positioned and connected to one end thereof, while the other side of the guide poles 62a and 62b is the rack gear 80 and the pinion gear. A roller support 88 is mounted to smoothly move the guide posts 62a and 62b by the 82, and the roller support 88 is a roller as shown in Figs. It is fixed to the lower support object 201 of the table 200 and is at the same level as the pinion gear 82 so that the guide stand 62a ( 62b) are horizontally maintained, and are arranged so that they can be finely adjusted from side to side in that state. 8. The width measuring sensor (59) continuously transmits a pulse signal indicating a moving distance of the moving table (34) to the control computer (100), and the control computer (100) calculates the calculated moving table ( 34. The side alignment device of the bending plate, characterized in that configured to measure the actual width of the iron plate (s) by subtracting the moving distance of the first moving table (34) and the fixing table (32). 10. The method of claim 9, wherein the actual width of the iron plate (s) is used for the center position adjustment of the iron plate (s), the center position adjustment of the iron plate (s) is made through a fine adjustment distance obtained by the following formula, Fine adjustment distance = (actual width of steel plate-width of steel plate) / 2, In addition, by moving the iron plate (S) in the lateral direction of the roller table 200 by the fine adjustment amount obtained in the above formula is characterized in that the central portion of the accurate iron plate (s) can be accurately entered into the width cutting device of the subsequent process Lateral alignment device for bending blades. 11. The method according to claim 10, wherein the stator 32 is set in advance so as to reference a zero point in the width direction with respect to the width cutting device (not shown) in a subsequent process, thereby between the stator 32 and the movable table 34. The actual position of the iron plate (s) located in the side alignment device of the bending blades, characterized in that the same applies to the cutting position in the width cutting device.