Constraint roll device and steel plate cutting device

Abstract

A constraining roll device and a steel plate cutting device are provided that can improve the precision of the alignment state by aligning constraining roll units using the power of a mechanical device. [Solution] The present invention includes a pair of constraining roll units that pressurize the upper and lower sides of a steel sheet to constrain it and rotate to transport the steel sheet in the constrained state, a pressure unit that is installed to connect the pair of constraining roll units and applies pressure so that the pair of constraining roll units pressurize the steel sheet, and an adjustment unit that rotates the constraining roll units based on a rotation center unit to adjust the alignment of the constraining roll units, and the constraining roll units are The present invention is characterized by including a constraining roll that applies pressure to the steel sheet and transfers the steel sheet while rotating, a driving member connected to the constraining roll via a drive shaft and driving the constraining roll to rotate, and a housing connected to the rotation center unit and rotated around the rotation center unit by the adjustment unit.

Description

[Technical Field]

[0001] The present invention relates to a constrained roll device and a steel plate cutting device, and more particularly to a constrained roll device and a steel plate cutting device that can improve the precision of alignment by aligning constrained roll units using the power of a mechanical device. [Background technology]

[0002] It is to be understood that the material set forth in this section is merely provided as background information for the present invention and may not constitute prior art.

[0003] The cutting process for thick steel plates, particularly the width cutting process, is a process in which unnecessary portions on both sides of a rolled blade plate are cut out to a size required by a customer.

[0004] When the cutting unit cuts the widthwise end region of the thick steel plate, the restraining roll device can use rotational force to transport and stop the steel plate while restraining it from both the top and bottom surfaces of the thick steel plate with force.

[0005] However, if the alignment direction of the restraint roll device is changed due to an unexpected external force or impact, the straightness of the steel plate cannot be ensured, and the cutting line on the side of the steel plate may deviate from a straight line, which in serious cases may lead to defects.

[0006] Previously, when it was necessary to realign the restraint roll, the tension on the spring supporting the restraint roll had to be released. However, removing the tension on the spring supporting the restraint roll, which weighed several tons, required manual labor using a hydraulic jack or two people using a long lever.

[0007] As a result, the precision of the alignment may be reduced because the alignment of the restraint rolls must be rearranged manually by the worker, which reduces the efficiency of work such as realignment, and increases the possibility of safety accidents involving workers, such as falls and cramps.

[0008] Furthermore, the time required to complete the realignment and adjustment of the restraint rolls is approximately 30 minutes per restraint roll, which increases the time required for equipment maintenance work and may result in reduced productivity. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Registration No. 10-1720089 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention aims to provide a constraining roll device and a steel plate cutting device that can improve the precision of the alignment state by aligning the constraining roll units using the power of a machine rather than the human power of an operator or the like.

[0011] The present invention aims to provide a constraint roll device and a steel plate cutting device that can improve the workability of workers, shorten work time, improve productivity, and prevent safety accidents from occurring to workers by adjusting the alignment state of constraint roll units using the power of a mechanical device rather than the human power of a worker or the like. [Means for solving the problem]

[0012] In order to achieve the above-mentioned object, the present invention provides a constraining roll device including a pair of constraining roll units that pressurize the upper and lower sides of a steel sheet to constrain it and rotate to transport the steel sheet in a constrained state, a pressure unit that is installed to connect the pair of constraining roll units and applies a pressure force so that the pair of constraining roll units pressurize the steel sheet, and an adjustment unit that rotates the constraining roll units based on a rotation center unit to adjust the alignment of the constraining roll units.

[0013] The constraining roll device of the present invention has the advantage that it can improve the precision of the alignment by aligning the constraining roll units using the power of a machine rather than the human power of an operator or the like.

[0014] The constraining roll unit may include a constraining roll that pressurizes the steel plate and transfers the steel plate while rotating, a driving member connected to the constraining roll via a driving shaft and driving the constraining roll to rotate, and a housing connected to the rotation center unit and rotated around the rotation center unit by the adjustment unit.

[0015] The adjustment unit may include an adjustment frame installed around the housing, a fixing member installed on the adjustment frame and fixed to the housing at one side thereof while being in close contact with the adjustment frame via the tension of a spring, and a rotating member that moves a wedge member forward or backward between the housing and the adjustment frame to rotate the housing based on the rotation center unit.

[0016] The fixing member may include a first fixing member that is installed on the adjustment frame and presses the housing in a first direction to fix it, and a second fixing member that is installed on the adjustment frame and presses the housing in a second direction that intersects with the first direction to fix it.

[0017] The fixing member may include a fixing bolt that is installed through the adjustment frame and has one side fixed to the housing; a pressure module that is installed on the other side of the fixing bolt and applies tension to the fixing bolt while being in close contact with the adjustment frame using tension of a spring; and a tension adjustment module that has a tension cylinder that houses the pressure module and adjusts the tension of the spring using pressure applied between the pressure module and the tension cylinder.

[0018] The pressure module may include a cylinder shaft through which the fixing bolt is installed and one side of which is disposed in contact with the adjustment frame, and a spring installed between the tension cylinder and the cylinder shaft to provide tension so that the cylinder shaft is in close contact with the adjustment frame.

[0019] The tension adjustment module may include a tension cylinder that accommodates the cylinder shaft and, together with the cylinder shaft, forms a pressure space to which pressure is supplied, and a pressure adjustment member that injects or discharges pressure into the pressure space between the cylinder shaft and the tension cylinder to adjust the tension of the spring.

[0020] The fixing member may include a fixing bolt that is installed to pass through the adjustment frame and has one side fixed to the housing; a cylinder shaft that is installed to have the fixing bolt pass through and one side in contact with the adjustment frame; a tension cylinder that receives the cylinder shaft and forms a pressure space to which pressure is supplied together with the cylinder shaft; a spring that is installed on the opposite side of the adjustment frame across the cylinder shaft and is installed between the tension cylinder and the cylinder shaft to provide tension so that the cylinder shaft is in close contact with the adjustment frame; and a pressure adjusting member that injects or discharges hydraulic or air pressure into or from the pressure space between the cylinder shaft and the tension cylinder to adjust the tension of the spring while moving the tension cylinder relative to the cylinder shaft.

[0021] The rotating member may include a wedge member that is installed between the housing and the adjustment frame to be able to move back and forth and whose thickness changes in the moving direction, and a servo motor that moves the wedge member back and forth to adjust the distance between the housing and the adjustment frame.

[0022] The fixing bolt of the fixing member may be installed by passing through the wedge hole of the wedge member, and a first diameter of the wedge hole may be configured to be larger than a second diameter of the fixing bolt, and when the fixing bolt passes through the wedge member, the wedge member may be movable in a direction intersecting the longitudinal direction of the fixing bolt.

[0023] In order to achieve the above-mentioned object, the present invention provides a steel plate cutting device including a roll table for transporting a steel plate, a cutting unit for continuously cutting an edge region in the width direction of the steel plate transported on the roll table, and the aforementioned constraint roll device that is disposed around the cutting unit in the transport direction of the steel plate and transports the steel plate in a pressurized state.

[0024] The constraining roll device may include a first constraining roll device disposed upstream of the steel plate being transported, and a second constraining roll device disposed downstream of the steel plate being transported and installed at a distance from the cutting unit in the transport direction of the steel plate. [Effects of the Invention]

[0025] According to the present invention, it is possible to improve the precision of the alignment by aligning the restraint roll units using the power of a machine device instead of the human power of an operator or the like.

[0026] The present invention has the effect of improving the worker's workability while shortening the work time, thereby improving productivity, and preventing the occurrence of safety accidents involving workers, by adjusting the alignment state of the restraint roll units using the power of a mechanical device rather than the human power of a worker or the like. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a perspective view of a restraining roll device of the present invention. [Figure 2] FIG. 1 is a front view of a restraining roll device of the present invention. [Figure 3] FIG. 1 is a plan view of a restraining roll device of the present invention. [Figure 4]4 is a diagram showing a process of adjusting the alignment state of the constraining roll units in the constraining roll device of FIG. 3 by moving backward the wedge members of the adjustment units and rotating the constraining roll device counterclockwise. FIG. [Figure 5] 4 is a diagram showing a process of adjusting the alignment state of the constraining roll units in the constraining roll device of FIG. 3 by advancing the wedge members of the adjustment units and rotating the constraining roll device counterclockwise. FIG. [Figure 6] FIG. 4 is a cross-sectional view of part “A” in FIG. 3. [Figure 7] FIG. 5 is a cross-sectional view of part “B” in FIG. 4. [Figure 8] FIG. 6 is a cross-sectional view of part “C” in FIG. 5. [Figure 9] 1 is a plan view of a steel plate cutting device according to the present invention. [Figure 10] 10 is a diagram showing a state in which the alignment of the restraining roll units included in the steel plate cutting device of FIG. 9 is misaligned. DETAILED DESCRIPTION OF THE INVENTION

[0028] The present invention will be described below with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various different forms, and the scope of the present invention is not limited to the embodiments described below. Furthermore, the embodiments of the present invention are provided to more completely explain the present invention to those having average knowledge in the art. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

[0029] As shown in the drawings, the constraining roll device and steel plate cutting device of the present invention are shown in the transfer direction (front-back direction), width direction (left-right), and up-down direction, and the detailed description of the invention also uses the terms transfer direction, width direction, and up-down direction, but this is done for the convenience of explanation, and it is made clear that the technical features of the constraining roll device and steel plate cutting device of the present invention are not limited to these directions.

[0030] In the following, the X axis shown in the accompanying drawings is the transfer direction (front-back direction) of the constraining roll device and the steel plate cutting device, the Y axis is the width direction (left-right direction) of the constraining roll device and the steel plate cutting device, and the Z axis is the up-down direction of the constraining roll device and the steel plate cutting device.

[0031] The components included in the restraining roll device 30 of the present invention will be specifically described below with reference to FIGS.

[0032] Fig. 1 is a perspective view of a constrained roll apparatus 30 of the present invention. Fig. 2 is a front view of a constrained roll apparatus 30 of the present invention. Fig. 3 is a plan view of a constrained roll apparatus 30 of the present invention.

[0033] The constraining roll device 30 of the present invention may include a pair of constraining roll units 100 , a pressure unit 200 , and an adjustment unit 300 .

[0034] The pair of restraining roll units 100 pressurize the upper and lower sides of the steel sheet S to restrain it, and can transport the steel sheet S in a restrained state while rotating.

[0035] As an example, the pair of constraining roll units 100 may be composed of a first constraining roll unit 100a and a second constraining roll unit 100b, and the first and second constraining roll units 100 may be arranged spaced apart in the vertical direction Z with the steel sheet S sandwiched therebetween.

[0036] The first constraining roll unit 100a applies pressure to the upper side of the steel sheet S to constrain it, and can transport the steel sheet S in the constrained state while rotating. The second constraining roll unit 100b applies pressure to the lower side to constrain it, and can transport the steel sheet S in the constrained state while rotating.

[0037] The pressure unit 200 is installed so as to connect the pair of constraining roll units 100 and can apply pressure to the steel sheet S so that the pair of constraining roll units 100 pressurize the steel sheet S.

[0038] The pressure unit 200 may be configured with a pressure cylinder 210 that connects between the pair of restraint roll units 100 , and the pressure cylinder 210 may be fixed to a cylinder bracket 230 .

[0039] One side of the pressure cylinder 210 may be fixed to a first cylinder bracket 230a installed in the housing 130 of the first constraining roll unit 100a, and the other side may be fixed to a second cylinder bracket 230b installed in the housing 130 of the second constraining roll unit 100b.

[0040] The adjustment unit 300 can adjust the alignment of the constraining roll units 100 by rotating the constraining roll units 100 based on the rotation center unit 400. For example, the adjustment unit 300 adjusts the alignment of the constraining roll units 100 using the power of a mechanical device such as a hydraulic motor 335a or a servo motor 353, rather than the manual operation of an operator, thereby achieving the effect of more precisely adjusting the alignment of the constraining roll units 100.

[0041] The rotation center unit 400 may be installed in each of the constraining roll units 100. The rotation center unit 400 can serve as a rotation axis of the constraining roll unit 100 while being fixed to a surrounding fixed structure.

[0042] The constraining roll unit 100 may include a constraining roll 110 , a drive member 150 , and a housing 130 .

[0043] The restraining rolls 110 apply pressure to the steel sheet S and can transport the steel sheet S while rotating.

[0044] The driving member 150 is connected to the restraint roll 110 via a driving shaft to rotate the restraint roll 110. The driving shaft can be rotated by the driving member 150 while being housed inside the housing 130.

[0045] The housing 130 is connected to the rotation center unit 400 and can be rotated around the rotation center unit 400 by the adjustment unit 300. A drive shaft may be disposed inside the housing 130, and the adjustment unit 300 may be disposed outside the housing 130.

[0046] The adjustment unit 300 may include an adjustment frame 310 , a fixed member 330 , and a rotating member 350 .

[0047] The adjustment frame 310 may be installed around the periphery of the housing 130. The adjustment frame 310 may be fixed to a surrounding fixed structure and may form a mounting portion for the fixed member 330 and the rotating member 350.

[0048] The fixing member 330 is installed on the adjustment frame 310 and can fix the housing 130 by being in close contact with the adjustment frame 310 through the tension of the spring 334 while one side is fixed to the housing 130 .

[0049] The fixing member 330 may include a first fixing member 330a and a second fixing member 330b.

[0050] The first fixing member 330a is installed on the adjustment frame 310 and can pressurize and fix the housing 130 in a first direction. The first fixing member 330a can pressurize and fix the housing 130 in a direction corresponding to the first direction, which is the transfer direction (X, front-rear direction).

[0051] The second fixing member 330b is installed on the adjustment frame 310 and can pressurize and fix the housing 130 in a second direction intersecting the first direction. The second fixing member 330b can pressurize and fix the housing 130 in a direction corresponding to the second direction, i.e., the vertical direction Z.

[0052] The rotating member 350 can rotate the housing 130 based on the rotation center unit 400 by moving the wedge member 351 forward or backward between the housing 130 and the adjustment frame 310 while releasing the tension of the springs 334 of the first fixing member 330a and the second fixing member 330b. At this time, the housing 130 can rotate based on the rotation center unit 400, thereby adjusting the alignment of the constraining roll unit 100.

[0053] The first fixing member 330 a and the second fixing member 330 b may be installed together on one adjustment frame 310 .

[0054] The rotating member 350 can rotate the housing 130 around the rotation center unit 400 by moving the wedge member 351 forward or backward between the housing 130 and the adjustment frame 310 .

[0055] The rotating member 350 can move the wedge member 351 forward or backward between the housing 130 and the adjustment frame 310 while adjusting the tension of the spring 334 of the fixed member 330. This allows the wedge member 351 of the rotating member 350 to be more easily sandwiched between the housing 130 and the adjustment frame 310.

[0056] The rotating member 350 may include a wedge member 351 and a servo motor 353 .

[0057] The wedge member 351 is installed between the housing 130 and the adjustment frame 310 so as to be able to move back and forth, and the thickness of the wedge member 351 may vary along the moving direction. For example, the wedge member 351 may move back and forth in the width direction Y, i.e., left and right.

[0058] The distance between the housing 130 and the adjustment frame 310 can be adjusted depending on the thickness of the wedge member 351 disposed between the housing 130 and the adjustment frame 310 .

[0059] That is, when wedge member 351 is inserted between housing 130 and adjustment frame 310, the thickness of wedge member 351 disposed between housing 130 and adjustment frame 310 changes, and housing 130 can rotate based on rotation center unit 400. At this time, driving member 150, drive shaft, and constraint roll 110 connected to housing 130 rotate integrally, and the alignment of constraint roll unit 100 can be adjusted. After the alignment of constraint roll unit 100 is adjusted to a predetermined position, wedge member 351 is fixed in position, so that the alignment of constraint roll unit 100 cannot be changed.

[0060] The servo motor 353 can adjust the distance between the housing 130 and the adjustment frame 310 by advancing and retracting the wedge member 351. When power and a signal are applied to the servo motor 353, the servo motor 353 can move the wedge member 351 forward and backward (forward or backward) and can play a role in moving the wedge member 351 forward and backward within a specified accuracy error range.

[0061] The servo motor 353 may be configured to generate a sufficient force to move the wedge member 351 forward or backward when the tension of the spring 334 of the fixing member 330 is released.

[0062] The fixing bolt 331 of the fixing member 330 may be installed by passing through the wedge hole 352 of the wedge member 351. The first diameter of the wedge hole 352 may be configured to be larger than the second diameter of the fixing bolt 331, and the wedge member 351 may be movable in a direction intersecting the longitudinal direction of the fixing bolt 331 when the fixing bolt 331 passes through the wedge member 351.

[0063] The wedge member 351 may be movable in a direction perpendicular to the length direction of the fixing bolt 331. Specifically, the fixing bolt 331 is formed to extend in the length direction, which is the transfer direction X, and the wedge member 351 may be movable in the width direction Y, which is perpendicular to the transfer direction X.

[0064] The first diameter of the wedge hole 352 may be in the range of 1.5 to 3 times the second diameter of the fixing bolt 331 .

[0065] Hereinafter, the process of adjusting the alignment state of the restraining roll unit 100 will be briefly described with reference to FIGS.

[0066] Figure 3 is a plan view of the constrained roll apparatus 30 of the present invention. Figure 4 is a diagram showing the process of adjusting the alignment of the constrained roll units 100 in the constrained roll apparatus 30 of Figure 3 by moving the wedge member 351 of the adjusting unit 300 backward and rotating the constrained roll apparatus 30 clockwise. Figure 5 is a diagram showing the process of adjusting the alignment of the constrained roll units 100 in the constrained roll apparatus 30 of Figure 3 by moving the wedge member 351 of the adjusting unit 300 forward and rotating the constrained roll apparatus 30 counterclockwise.

[0067] If the constraining roll 110 of the constraining roll device 30 is misaligned and the alignment of the constraining roll unit 100 needs to be adjusted (see FIG. 10), the alignment of the constraining roll unit 100 can be adjusted to the fixed position as shown in FIG. 9 by going through the following process (see FIG. 9).

[0068] First, the tension on the spring 334 applied to the fixed member 330 can be released.

[0069] Next, the rotating member 350 moves the wedge member 351 forward or backward between the housing 130 and the adjustment frame 310, thereby rotating the housing 130 based on the rotation center unit 400. At this time, the servo motor 353 can determine the degree of forward or backward movement of the wedge member 351, taking into account the deviation of the restraint roll 110, etc.

[0070] 3, the housing 130 may be disposed in the left-right direction parallel to a horizontal line L. Then, with the fixing member 330 released from its fixed state, the wedge member 351 can be moved back and forth in the left-right direction by the servo motor 353. The wedge member 351 may have a shape in which its thickness increases from one side in the width direction Y to the other side in the width direction Y.

[0071] 4, when servo motor 353 moves wedge member 351 to the left, a thinner portion of wedge member 351 is disposed between housing 130 and adjustment frame 310, allowing housing 130 to rotate clockwise around rotation center unit 400. That is, restraint roll 110 rotates upward, and drive member 150 rotates downward.

[0072] 5, when servo motor 353 moves wedge member 351 to the right, a thicker portion of wedge member 351 is disposed between housing 130 and adjustment frame 310, allowing housing 130 to rotate counterclockwise around rotation center unit 400. That is, restraint roll 110 rotates downward, and driving member 150 rotates upward.

[0073] Next, tension of the spring 334 is applied to the fixing member 330, and the fixing member 330 fixes the housing 130, thereby supporting the restraint roll device 30 whose alignment has been completed.

[0074] Fig. 6 is a cross-sectional view of part "A" in Fig. 3. Fig. 7 is a cross-sectional view of part "B" in Fig. 4. Fig. 8 is a cross-sectional view of part "C" in Fig. 5.

[0075] The fixing member 330 may include a fixing bolt 331, a pressure module, and a tension adjustment module.

[0076] The fixing bolt 331 is installed through the adjustment frame 310 and can be fixed to the housing 130 at one end.

[0077] The pressure module is installed on the other side of the fixing bolt 331 and can apply tension to the fixing bolt 331 while being in close contact with the adjustment frame 310 through the tension of the spring 334 .

[0078] The tension adjustment module has a tension cylinder 332 that houses the pressure module, and the tension of the spring 334 can be adjusted via the pressure provided between the pressure module and the tension cylinder 332.

[0079] The tension adjustment modules may be located on opposite sides of the housing 130 across the adjustment frame 310 .

[0080] The pressure module may include a cylinder shaft 333 and a spring 334 .

[0081] The cylinder shaft 333 may be installed with the fixing bolt 331 passing therethrough, and one side may be disposed in contact with the adjustment frame 310. The cylinder shaft 333 may apply a tensile force to the fixing bolt 331 while being in close contact with the adjustment frame 310 via the tension of the spring 334.

[0082] The cylinder shaft 333 may be slidably installed on the fixing bolt 331 through which the fixing bolt 331 passes. One side of the cylinder shaft 333 may be disposed to contact the adjustment frame 310, and the other side of the cylinder shaft 333 may be disposed to contact the spring 334.

[0083] The cylinder shaft 333 may be supported by the tension of the spring 334 and spaced apart from the nut 331a of the fixing bolt 331. When the spring 334 is compressed, the cylinder shaft 333 moves toward the nut 331a of the fixing bolt 331, thereby reducing the distance between the cylinder shaft 333 and the nut 331a of the fixing bolt 331.

[0084] At least a portion of the cylinder shaft 333 may be disposed inside the tension cylinder 332 together with the spring 334 , and the remaining portion may be disposed so as to protrude from the tension cylinder 332 and contact the adjustment frame 310 .

[0085] The spring 334 is installed between the tension cylinder 332 and the cylinder shaft 333 and can provide tension so that the cylinder shaft 333 is in close contact with the adjustment frame 310. The spring 334 can be housed inside the tension cylinder 332. For example, the spring 334 can be a coil spring 334, and one side of the cylinder shaft 333 can be inserted inside the spring 334.

[0086] The tension adjustment module may include a tension cylinder 332 and a pressure adjustment member 335 .

[0087] The tension cylinder 332 accommodates a cylinder shaft 333 and can form a pressure space T together with the cylinder shaft 333 to which pressure is supplied.

[0088] The tension cylinder 332 is disposed between the adjustment frame 310 and the nut 331a of the fixing bolt 331, and the fixing bolt 331 passes through the tension cylinder 332 to form an accommodation space therein. A cylinder shaft 333 may be slidably coupled to the tension cylinder 332.

[0089] A portion of the cylinder shaft 333 may be housed in the tension cylinder 332 , and the remaining portion of the cylinder shaft 333 may be disposed so as to protrude from the tension cylinder 332 and come into contact with the adjustment frame 310 .

[0090] The pressure adjusting member 335 can adjust the tension of the spring 334 by injecting or discharging pressure into or from the pressure space T between the cylinder shaft 333 and the tension cylinder 332 .

[0091] The pressure adjusting member 335 can adjust the tension of the spring 334 by injecting or discharging pressure into the pressure space T and moving the tension cylinder 332 relative to the cylinder shaft 333.

[0092] When pressure is injected into the pressure space T by the pressure adjustment member 335, the pressure space T increases, and the spring 334 can be compressed. When the spring 334 is compressed, the gap between the adjustment frame 310 and the tension cylinder 332 decreases, and the servo motor 353 can easily insert the wedge member 351 between the housing 130 and the adjustment frame 310.

[0093] Specifically, when the spring 334 is compressed, the compressive force acting on the wedge member 351 may be reduced by the tensile force applied to the fixing bolt 331. Therefore, the servo motor 353 can easily insert the wedge member 351 between the housing 130 and the adjustment frame 310.

[0094] The pressure adjusting member 335 can provide hydraulic pressure to the pressure space T by driving the hydraulic motor 335a.

[0095] First, when the hydraulic motor 335a injects hydraulic oil into the pressure space T via the hydraulic supply line 335b, the pressure space T may become larger. At this time, the tension cylinder 332 moves relative to the cylinder shaft 333, and the spring 334 may be compressed, thereby reducing the distance between the tension cylinder 332 and the adjustment frame 310.

[0096] Conversely, when the hydraulic motor 335a discharges hydraulic oil from the pressure space T via the hydraulic supply line 335b, the pressure space T may become smaller. At this time, the tension cylinder 332 moves relative to the cylinder shaft 333, allowing the spring 334 to relax, and the distance between the tension cylinder 332 and the adjustment frame 310 may increase.

[0097] The fixing member 330 may include a fixing bolt 331 , a cylinder shaft 333 , a tension cylinder 332 , a spring 334 and a pressure adjusting member 335 .

[0098] The fixing bolt 331 is installed through the adjustment frame 310 and can be fixed to the housing 130 at one end.

[0099] The cylinder shaft 333 may be installed with the fixing bolt 331 passing therethrough, and may be disposed so that one side thereof contacts the adjustment frame 310 .

[0100] The tension cylinder 332 accommodates a cylinder shaft 333 and can form a pressure space T together with the cylinder shaft 333 to which pressure is supplied.

[0101] The spring 334 is installed between the tension cylinder 332 and the cylinder shaft 333 and can provide tension so that the cylinder shaft 333 is in close contact with the adjustment frame 310 .

[0102] The pressure adjustment member 335 can adjust the tension of the spring 334 by injecting or discharging hydraulic or air pressure into or from the pressure space T between the cylinder shaft 333 and the tension cylinder 332, thereby moving the tension cylinder 332 relative to the cylinder shaft 333.

[0103] The following will describe in detail the configuration during the process of adjusting the alignment state of the restraining roll unit 100 as shown in FIGS.

[0104] As shown in FIG. 6, the fixed member 330 and the rotating member 350 can be installed in conjunction with each other.

[0105] The fixing bolt 331 of the fixing member 330 can be fixed to the housing 130 by passing through the tension cylinder 332, the cylinder shaft 333, the adjustment frame 310, and the wedge member 351.

[0106] 7 and 8, when the tension of the spring 334 is adjusted by the pressure adjustment member 335, the distance between the adjustment frame 310 and the tension cylinder 332 can be adjusted, and the distance between the housing 130 and the adjustment frame 310 can be adjusted. Specifically, the distance between the housing 130 and the adjustment frame 310 can be adjusted by the wedge member 351.

[0107] The wedge member 351 may be disposed between the housing 130 and the adjustment frame 310. The distance between the housing 130 and the adjustment frame 310 may vary depending on the thickness of the wedge member 351 disposed between the housing 130 and the adjustment frame 310. As a result, the wedge member 351 may be inserted between the housing 130 and the adjustment frame 310 to press the housing 130, thereby adjusting the position of the housing 130.

[0108] At this time, since the adjustment frame 310 is fixed, the alignment of the restraining roll unit 100 can be adjusted by moving the housing 130 based on the fixed adjustment frame 310 .

[0109] As shown in FIG. 7, when pressure is exhausted from the pressure space T by the pressure adjustment member 335, the pressure space T becomes smaller, allowing the spring 334 to relax.

[0110] When the spring 334 is relaxed, the gap between the adjustment frame 310 and the tension cylinder 332 can widen. At this time, the servo motor 353 moves the wedge member 351 to the left, allowing the thin portion of the wedge member 351 to be positioned between the housing 130 and the adjustment frame 310.

[0111] As shown in FIG. 8, when pressure is injected into the pressure space T by the pressure adjusting member 335, the pressure space T becomes larger, so that the spring 334 can be compressed.

[0112] When the spring 334 is compressed, the gap between the adjustment frame 310 and the tension cylinder 332 may narrow. At this time, the servo motor 353 moves the wedge member 351 to the right, allowing the thicker portion of the wedge member 351 to be positioned between the housing 130 and the adjustment frame 310.

[0113] Next, as shown in Figs. 9 and 10, the components included in the steel plate cutting device of the present invention will be described in detail.

[0114] Fig. 9 is a plan view of the steel plate cutting apparatus of the present invention, and Fig. 10 is a view showing a state where the constraining roll unit 100 included in the steel plate cutting apparatus of Fig. 9 is misaligned.

[0115] The steel plate cutting apparatus of the present invention may include a roll table, a cutting unit 20, and the above-described restraining roll device 30.

[0116] The roll table can transport the steel sheet S, and can have a plurality of transport roll units 10 arranged at predetermined intervals along the transport direction X of the steel sheet S.

[0117] The transfer roll unit 10 may include a transfer roll and a transfer motor. The transfer roll can transfer the steel sheet S while rotating. The transfer motor can provide a driving force for rotating the transfer roll.

[0118] The cutting unit 20 can continuously cut the end region in the width direction Y of the steel sheet S being transported on the roll table.

[0119] The cutting unit 20 can have an upper blade disposed on the upper side and a lower blade disposed on the lower side.

[0120] When the process of sequentially cutting the sides of the thick steel plate S using the rotational-translational motion of the upper blade among the blades provided on both sides is performed, the steel plate S can be kept stopped by the restraining roll device 30.

[0121] After the cutting stroke of the upper blade is completed, the constraining roll 110 of the constraining roll device 30 rotates while maintaining pressure on the steel sheet S, and the steel sheet S is advanced by the frictional force between the constraining roll 110 of the constraining roll device 30 and the steel sheet S, and the steel sheet S is stopped at a position where the cutting lines on the side of the steel sheet S continue, at which point the upper blade can again perform rotation-translation motion. The series of transfer-stop-cutting processes can be repeated several times to cut both sides of the steel sheet S to the desired width.

[0122] The restraining roll device 30 is disposed around the cutting unit 20 in the transfer direction X of the steel sheet S, and is capable of transferring the steel sheet S in a pressurized state.

[0123] As shown in FIG. 1, the restraining roll device 30 can transport and stop the steel sheet S by using a rotational force while restraining the steel sheet S from the upper and lower surfaces with forces.

[0124] The constraining roll device 30 may include a first constraining roll device 30a and a second constraining roll device 30b.

[0125] The first constraining roll device 30a may be disposed on the upstream side of the transported steel sheet S. The second constraining roll device 30 may be disposed on the downstream side of the transported steel sheet S and installed apart from the cutting unit 20 in the transport direction X of the steel sheet S.

[0126] As shown in FIG. 9, the steel sheet S can be transported and stopped using a rotational force while the first and second restraining roll devices 30 restrain the steel sheet S from the upper and lower surfaces with force.

[0127] 10, in a steel plate cutting device, the alignment state of the constraining roll unit 100 may change due to an unexpected external force, impact, or the like, which may cause a deviation or the like in the constraining roll 110 of the constraining roll device 30. If a deviation or the like occurs in the constraining roll 110 of the constraining roll device 30, the straightness of the steel plate S cannot be ensured, and the cutting line on the side surface of the steel plate S may deviate from a straight line, which may lead to a problem of a defective cut surface of the steel plate S.

[0128] In this case, it is necessary to adjust the alignment of the restraint roll unit 100 so that the restraint roll device 30, which is in a misaligned state as shown in FIG. 10, is aligned in the fixed position as shown in FIG.

[0129] The process of adjusting the alignment of the restraining roll unit 100 will be briefly described below.

[0130] If the constraining roll 110 of the constraining roll device 30 is misaligned (see FIG. 10) and the alignment of the constraining roll unit 100 needs to be adjusted, the alignment of the constraining roll unit 100 can be adjusted to the fixed position as shown in FIG. 9 by going through the following process (see FIG. 9).

[0131] First, the tension of the spring 334 applied to the fixed member 330 of the restraint roll device 30 can be released.

[0132] Next, as described above, the rotation member 350 can move the wedge member 351 forward or backward between the housing 130 and the adjustment frame 310 to rotate the housing 130 based on the rotation center unit 400. At this time, the servo motor 353 can determine the degree of forward or backward movement of the wedge member 351, taking into account the deviation of the restraint roll 110, etc.

[0133] At this time, the degree of deviation of the restraint roll device 30 can be collected by an image recognition unit (not shown) or the like, and a control unit (not shown) can align the restraint roll device 30 to a fixed position (see FIG. 9) based on the information collected from the image recognition unit or the like so as to ensure the straightness of the steel sheet S.

[0134] The restraining roll device 30 can then complete alignment by applying tension to the spring 334 on the securing member 330 to secure the housing 130 .

[0135] Furthermore, it goes without saying that the various embodiments of the restraint roll device 30 described above may be applied to the steel plate cutting device of the present invention.

[0136] Therefore, the configurations of the constraining roll unit 100, pressure unit 200, and adjustment unit 300 of the constraining roll device 30 used in the steel plate cutting device are the same as the configuration of the constraining roll device 30, as already described, and therefore detailed description thereof will be omitted to avoid duplication.

[0137] Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and it is obvious to those skilled in the art that various modifications and variations are possible within the scope that does not deviate from the technical idea of ​​the present invention described in the claims. [Explanation of symbols]

[0138] 10 Transfer Roll Unit 20 Cutting Unit 30 Restraint Roll Device 30a First restraining roll device 30b Second restraining roll device 100 Restraint Roll Unit 100a First restraining roll unit 100b Second restraining roll unit 110 Restraint Roll 130 Housing 150 driving member 200 Pressure Unit 210 Pressure Cylinder 230 Cylinder bracket 230a First cylinder bracket 230b Second cylinder bracket 300 Adjustment Unit 310 Adjustment Frame 330 Fixing member 330a first fixing member 330b Second fixing member 331 Fixing bolt 331a Nut 332 Tension cylinder 333 Cylinder shaft 334 Spring 335 Pressure adjusting member 335a Hydraulic motor 335b Hydraulic supply line 350 Rotating member 351 Wedge member 352 Wedge hole 353 Servo Motor 400 Rotational Center Unit L horizontal line S steel plate T pressure space X Transfer direction (back and forth) Y width direction (horizontal direction) Z vertical direction

Claims

1. a pair of restraining roll units that pressurize the upper and lower sides of the steel plate to restrain it and transport the steel plate in a restrained state while rotating; a pressure unit that is installed to connect the pair of constraining roll units and applies a pressure force so that the pair of constraining roll units press the steel sheet; and A constraining roll device comprising: an adjustment unit that rotates the constraining roll unit based on a rotation center unit to adjust the alignment of the constraining roll unit.

2. The restraining roll unit is A restraining roll that pressurizes the steel plate and transports it while rotating; a drive member connected to the constraint roll via a drive shaft to rotate the constraint roll; and The restraint roll device according to claim 1 , further comprising a housing connected to the rotation center unit and adapted to rotate about the rotation center unit by the adjustment unit.

3. The adjustment unit comprises: an adjustment frame disposed around the housing; a fixing member installed on the adjustment frame, one side of which is fixed to the housing, and which fixes the housing by being in close contact with the adjustment frame through the tension of a spring; 3. The restraint roll device according to claim 2, further comprising a rotating member that moves a wedge member forward or backward between the housing and the adjustment frame to rotate the housing about the rotation center unit.

4. The fixing member is a first fixing member installed on the adjustment frame and pressing the housing in a first direction to fix the housing; and 4. The restraining roll device according to claim 3, further comprising a second fixing member mounted on the adjustment frame and configured to press and fix the housing in a second direction intersecting the first direction.

5. The fixing member is a fixing bolt that is installed through the adjustment frame and has one side fixed to the housing; a pressure module installed on the other side of the fixing bolt and applying a tension to the fixing bolt while being in close contact with the adjustment frame through the tension of a spring; 4. The restraint roll apparatus of claim 3, further comprising a tension adjustment module having a tension cylinder that houses the pressure module and adjusts the tension of the spring through pressure applied between the pressure module and the tension cylinder.

6. The pressurizing module includes: a cylinder shaft through which the fixing bolt is installed and one side of which is disposed in contact with the adjustment frame; and 6. The restraining roll device of claim 5, further comprising a spring disposed between the tension cylinder and the cylinder shaft to provide tension so that the cylinder shaft is in close contact with the adjustment frame.

7. The tension adjustment module includes: a tension cylinder that accommodates the cylinder shaft and, together with the cylinder shaft, forms a pressure space to which pressure is supplied; and 7. The restraint roll device according to claim 6, further comprising a pressure adjusting member that adjusts the tension of the spring by injecting or discharging pressure into or from the pressure space between the cylinder shaft and the tension cylinder.

8. The fixing member is a fixing bolt that is installed through the adjustment frame and has one side fixed to the housing; a cylinder shaft through which the fixing bolt is installed and one side of which is disposed in contact with the adjustment frame; a tension cylinder that accommodates the cylinder shaft and forms, together with the cylinder shaft, a pressure space to which pressure is supplied; a spring disposed on the opposite side of the adjustment frame across the cylinder shaft, the spring being installed between the tension cylinder and the cylinder shaft to provide tension so that the cylinder shaft is in close contact with the adjustment frame; and 4. The restraint roll device according to claim 3, further comprising a pressure adjustment member that adjusts the tension of the spring by injecting or discharging hydraulic or pneumatic pressure into or from the pressure space between the cylinder shaft and the tension cylinder, thereby moving the tension cylinder relative to the cylinder shaft.

9. The rotating member is a wedge member disposed between the housing and the adjustment frame so as to be movable back and forth, the thickness of which varies in the moving back and forth direction; and 4. The restraining roll device according to claim 3, further comprising a servo motor that moves the wedge member back and forth to adjust the distance between the housing and the adjustment frame.

10. The fixing bolt of the fixing member is installed through the wedge hole of the wedge member, 10. The restraint roll device of claim 9, wherein the first diameter of the wedge hole is larger than the second diameter of the fixing bolt, and when the fixing bolt passes through the wedge member, the wedge member is movable in a direction intersecting the longitudinal direction of the fixing bolt.

11. A roll table for transporting steel plates, a cutting unit that continuously cuts the end region in the width direction of the steel plate being transported on the roll table; and 11. A steel plate cutting device comprising: the restraint roll device according to claim 1, which is arranged around the cutting unit in the transport direction of the steel plate and transports the steel plate in a pressurized state.

12. The restraining roll device is a first restraining roll device disposed upstream of the transported steel plate; and 12. The steel plate cutting device according to claim 11, further comprising: a second restraining roll device disposed downstream of the transported steel plate and spaced apart from the cutting unit in the transport direction of the steel plate.

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