Restraint roll apparatus and shearing apparatus for steel plate

Abstract

The present invention provides a restraint roll apparatus comprising: a pair of restraint roll units for pressing and restraining the upper side and the lower side of a steel plate and transferring the steel plate in a restrained state while rotating same; a pressing unit that is installed to connect the pair of restraint roll units and applies a pressing force so that the pair of restraint roll units press the steel plate; and an adjustment unit for adjusting the alignment of the restraint roll units by rotating the restraint roll units with respect to a rotation center unit.

Description

Restraint roll device and steel plate cutting device

[0001] The present invention relates to a restraining roll device and a steel plate cutting device.

[0002] It is to be noted that the content described in this section merely provides background information for the present invention and does not constitute prior art.

[0003] The sheet metal cutting process, especially the width cutting process, is a process of cutting off unnecessary parts on both sides of the rolled sheet metal to the size required by the customer.

[0004] When the cutting unit cuts the widthwise end area of ​​the steel plate, the restraining roll device can transport and stop the steel plate using rotational force while restraining the upper and lower surfaces of the steel plate with force.

[0005] However, if the alignment direction of the restraining roll device is changed due to unexpected external force, impact, etc., the straightness of the rear plate cannot be secured, so the cutting line on the side of the rear plate deviates from a straight line, and in severe cases, this can lead to defects.

[0006] In the past, when realignment of a restraining roll was required, the tension of the spring supporting the restraining roll had to be released. This was done manually using a hydraulic jack or a long lever by two people, to remove the tension of the spring supporting the restraining roll weighing several tons.

[0007] Accordingly, there is a problem that the precision of the alignment may be reduced because the alignment of the restraint roll is realigned by the worker's manpower, the work efficiency such as realignment may be reduced, and the possibility of safety accidents to the worker, such as falling or being caught, may increase.

[0008] In addition, since it takes about 30 minutes per restraint roll to complete the realignment and adjustment of the restraint rolls, there is a problem that productivity may decrease as excessive work time for equipment maintenance is consumed.

[0009] (Patent Document 1) KR 10-1720089 B1

[0010] In one aspect, the present invention aims to provide a restraining roll device and a steel plate cutting device that can improve the precision of alignment by aligning the restraining roll unit using the power of a mechanical device rather than the manpower of a worker or the like.

[0011] The present invention, in one aspect, aims to provide a restraint roll device and a steel plate cutting device that can prevent the occurrence of safety accidents of workers in advance, by adjusting the alignment state of the restraint roll unit using the power of a mechanical device rather than the manpower of a worker, thereby improving the workability of workers and shortening the work time, thereby improving productivity.

[0012] In one aspect to achieve the above object, the present invention provides a restraint roll device including a pair of restraint roll units that restrain the upper and lower sides of a steel plate by applying pressure and transport the restrained steel plate while rotating; a pressing unit that is installed to connect the pair of restraint roll units and applies a pressing force so that the pair of restraint roll units press the steel plate; and an adjustment unit that rotates the restraint roll units about a rotation center unit to adjust the alignment state of the restraint roll units.

[0013] The restraint roll device of the present invention has the effect of improving the precision of the alignment state by aligning the restraint roll unit using the power of a mechanical device rather than the manpower of a worker or the like.

[0014] The above restraint roll unit may include a restraint roll that presses a steel plate and transports the steel plate while rotating; a driving member that is connected to the restraint roll via a driving shaft and rotates the restraint roll; and a housing that is connected to the rotation center unit and rotates with respect to the rotation center unit by the adjustment unit.

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

[0016] The above fixing member may include a first fixing member installed in the adjustment frame and fixing the housing by pressing in a first direction; and a second fixing member installed in the adjustment frame and fixing the housing by pressing in a second direction intersecting the first direction.

[0017] The above-mentioned fixing member may include a fixing bolt installed through the adjustment frame and having one side fixed to the housing; a pressure module installed on the other side of the fixing bolt and applied with tension to the fixing bolt while being in close contact with the adjustment frame by the tension of a spring; and a tension adjustment module having a tension cylinder that accommodates the pressure module and adjusts the tension of the spring by the pressure provided between the pressure module and the tension cylinder.

[0018] The pressurizing module may include a cylinder shaft through which the fixing bolt is installed and one side of which is arranged to be 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 control module may include a tension cylinder that accommodates the cylinder shaft and forms a pressure space to which pressure is supplied together with the cylinder shaft; and a pressure control member that adjusts the tension of the spring by injecting or discharging pressure into the pressure space between the cylinder shaft and the tension cylinder.

[0020] The above-mentioned fixing member may include: a fixing bolt installed through the adjustment frame and having one side fixed to the housing; a cylinder shaft through which the fixing bolt is installed and having one side disposed in contact with the adjustment frame; a tension cylinder accommodating the cylinder shaft and forming a pressure space to which pressure is supplied together with the cylinder shaft; a spring disposed on the opposite side of the adjustment frame with the cylinder shaft interposed therebetween and 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 adjusts the tension of the spring by injecting or discharging hydraulic or pneumatic pressure into the pressure space between the cylinder shaft and the tension cylinder to move the tension cylinder relative to the cylinder shaft.

[0021] The above-mentioned rotating member may include a wedge member that is installed so as to be able to move forward and backward between the housing and the adjustment frame, and whose thickness varies in the direction of movement; and a servo motor that moves the wedge member forward and backward to adjust the distance between the housing and the adjustment frame.

[0022] The fixing bolt of the above-mentioned fixed member is installed by penetrating the wedge hole of the wedge member, and the first diameter of the wedge hole is configured to be larger than the second diameter of the fixing bolt, so that the wedge member can move in a direction intersecting the longitudinal direction of the fixing bolt when the fixing bolt penetrates the wedge member.

[0023] As another aspect for achieving the above purpose, the present invention provides a steel plate cutting device including: a roll table for transporting a steel plate; a cutting unit for continuously cutting a widthwise end region of a steel plate transported on the roll table; and the aforementioned restraining roll device, which is arranged around the cutting unit in the transport direction of the steel plate and transports the steel plate in a pressurized state.

[0024] The above restraining roll device may include a first restraining roll device arranged on the upstream side of the steel plate being transported; and a second restraining roll device arranged on the downstream side of the steel plate being transported and installed spaced apart from the cutting unit in the transport direction of the steel plate.

[0025] According to one embodiment of the present invention, there is an effect of improving the precision of the alignment state by aligning the restraining roll unit using the power of a mechanical device rather than manpower such as a worker.

[0026] In one aspect, the present invention has the effect of preventing the occurrence of safety accidents to workers in advance, by adjusting the alignment state of a restraining roll unit using the power of a mechanical device rather than the manpower of a worker or the like, thereby improving the workability of workers and shortening the work time, thereby improving productivity.

[0027] FIG. 1 is a perspective view of a restraint roll device according to one embodiment of the present invention.

[0028] Figure 2 is a front view of a restraint roll device according to one embodiment of the present invention.

[0029] Figure 3 is a plan view of a restraint roll device according to one embodiment of the present invention.

[0030] FIG. 4 is a drawing showing a process in which the alignment state of the restraint roll unit is adjusted by moving the wedge member of the adjustment unit backward in the restraint roll device of FIG. 3 and rotating the restraint roll device counterclockwise.

[0031] FIG. 5 is a drawing showing a process in which the alignment state of the restraint roll unit is adjusted by advancing the wedge member of the adjustment unit in the restraint roll device of FIG. 3 and rotating the restraint roll device counterclockwise.

[0032] Figure 6 is a cross-sectional view of part 'A' of Figure 3.

[0033] Figure 7 is a cross-sectional view of part 'B' of Figure 4.

[0034] Figure 8 is a cross-sectional view of part 'C' of Figure 5.

[0035] Figure 9 is a plan view of a steel plate cutting device according to one embodiment of the present invention.

[0036] Fig. 10 is a drawing showing a misaligned state of the restraint roll unit included in the steel plate cutting device of Fig. 9.

[0037] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the embodiments of the present invention may be modified in various ways, 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 fully explain the present invention to those skilled in the art. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

[0038] Referring to the drawings, the restraining roll device and the steel plate cutting device of the present invention are illustrated in the transport direction (front-back direction), width direction (left-right), and up-down direction, and although the terms of transport direction, width direction, and up-down direction are used in the detailed description of the invention, this is for the convenience of explanation, and it is to be noted that the technical features of the restraining roll device and the steel plate cutting device of the present invention are not limited to these directions.

[0039] Hereinafter, the X-axis illustrated in the attached drawing is the transport direction (front-backward direction) of the restraining roll device and the steel plate cutting device, the Y-axis is the width direction (left-right direction) of the restraining roll device and the steel plate cutting device, and the Z-axis is the up-down direction of the restraining roll device and the steel plate cutting device.

[0040] Hereinafter, components included in a restraint roll device (30) according to one embodiment of the present invention will be specifically described with reference to FIGS. 1 to 10.

[0041] Fig. 1 is a perspective view of a restraining roll device (30) according to one embodiment of the present invention. Fig. 2 is a front view of a restraining roll device (30) according to one embodiment of the present invention. Fig. 3 is a plan view of a restraining roll device (30) according to one embodiment of the present invention.

[0042] A restraint roll device (30) according to one embodiment of the present invention may include a pair of restraint roll units (100), a pressurizing unit (200), and an adjustment unit (300).

[0043] A pair of restraint roll units (100) can restrain the upper and lower sides of a steel plate (S) by applying pressure, and transport the restrained steel plate (S) while rotating.

[0044] For example, a pair of restraint roll units (100) may be composed of a first restraint roll unit (100a) and a second restraint roll unit (100b), and the first and second restraint roll units (100) may be arranged spaced apart from each other in the vertical direction (Z) with a steel plate (S) interposed therebetween.

[0045] The first restraining roll unit (100a) can restrain the upper side of the steel plate (S) by applying pressure, and can transport the restrained steel plate (S) while rotating. The second restraining roll unit (100b) can restrain the lower side by applying pressure, and can transport the restrained steel plate (S) while rotating.

[0046] The pressurizing unit (200) is installed to connect a pair of restraining roll units (100), and can apply a pressing force to the pair of restraining roll units (100) to pressurize the steel plate (S).

[0047] The pressurizing unit (200) may be composed of a pressurizing cylinder (210) connecting a pair of restraint roll units (100), and the pressurizing cylinder (210) may be fixed to a cylinder bracket (230).

[0048] One side of the pressurized cylinder (210) can be fixed to a first cylinder bracket (230a) installed in the housing (130) of the first restraining roll unit (100a), and the other side can be fixed to a second cylinder bracket (230b) installed in the housing (130) of the second restraining roll unit (100b).

[0049] The adjustment unit (300) can adjust the alignment of the restraining roll unit (100) by rotating the restraining roll unit (100) based on the rotation center unit (400). For example, the adjustment unit (300) can adjust the alignment of the restraining roll unit (100) using the power of a mechanical device such as a hydraulic motor (335a) or a servo motor (353) rather than manual operation by a worker, thereby having the effect of more precisely adjusting the alignment of the restraining roll unit (100).

[0050] The rotation center unit (400) can be installed on each of the restraining roll units (100). The rotation center unit (400) can serve as the rotation axis of the restraining roll unit (100) while being fixed to a surrounding fixed structure.

[0051] The restraint roll unit (100) may include a restraint roll (110), a driving member (150), and a housing (130).

[0052] The restraint roll (110) can pressurize the steel plate (S) and transport the steel plate (S) while rotating.

[0053] The driving member (150) is connected to the restraining roll (110) via a driving shaft and can rotate the restraining roll (110). The driving shaft can be rotated by the driving member (150) while being accommodated inside the housing (130).

[0054] The housing (130) is connected to the rotation center unit (400) and can rotate around the rotation center unit (400) by the adjustment unit (300). A driving shaft may be arranged inside the housing (130), and an adjustment unit (300) may be arranged outside the housing (130).

[0055] The adjustment unit (300) may include an adjustment frame (310), a fixed member (330), and a rotating member (350).

[0056] The adjustment frame (310) can be installed around the housing (130). The adjustment frame (310) can be fixed to a surrounding fixed structure and can form an installation portion of the fixed member (330) and the rotating member (350).

[0057] The fixed member (330) is installed in the adjustment frame (310), and with one side fixed to the housing (130), it can be pressed against the adjustment frame (310) by the tension of the spring (334) to fix the housing (130).

[0058] The fixed member (330) may include a first fixed member (330a) and a second fixed member (330b).

[0059] The first fixing member (330a) is installed in the adjustment frame (310) and can fix the housing (130) by pressing it in the first direction. The first fixing member (330a) can fix the housing (130) by pressing it in a direction corresponding to the first direction, that is, the transport direction (X, forward / backward direction).

[0060] The second fixing member (330b) is installed on the adjustment frame (310) and can fix the housing (130) by pressing it in a second direction intersecting the first direction. The second fixing member (330b) can fix the housing (130) by pressing it in a direction corresponding to the second direction, that is, the up-down direction (Z).

[0061] The rotating member (350) can rotate the housing (130) about 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 spring (334) of the first fixed member (330a) and the second fixed member (330b). At this time, the alignment state of the restraining roll unit (100) can be adjusted while the housing (130) rotates about the rotation center unit (400).

[0062] The first fixing member (330a) and the second fixing member (330b) can be installed together in one adjusting frame (310).

[0063] 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).

[0064] For example, 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). Accordingly, the wedge member (351) of the rotating member (350) can be more easily fitted between the housing (130) and the adjustment frame (310).

[0065] The rotating member (350) may include a wedge member (351) and a servo motor (353).

[0066] The wedge member (351) is installed so as to be able to move forward and backward between the housing (130) and the adjustment frame (310), and the thickness of the wedge member (351) may vary along the direction of movement. For example, the wedge member (351) may move forward and backward in the left and right directions, which are the width direction (Y).

[0067] The distance between the housing (130) and the adjustment frame (310) can be adjusted depending on the thickness of the wedge member (351) placed between the housing (130) and the adjustment frame (310).

[0068] That is, when the wedge member (351) is inserted between the housing (130) and the adjustment frame (310), the thickness of the wedge member (351) arranged between the housing (130) and the adjustment frame (310) changes, so that the housing (130) can rotate with respect to the rotation center unit (400). At this time, the driving member (150), the driving shaft, and the restraining roll (110) connected to the housing (130) can rotate as one unit, so that the alignment state of the restraining roll unit (100) can be adjusted. After the alignment state of the restraining roll unit (100) is adjusted to the correct position, the wedge member (351) can be fixed in position so that the alignment state of the restraining roll unit (100) does not change.

[0069] The servo motor (353) can move the wedge member (351) forward and backward to adjust the distance between the housing (130) and the adjustment frame (310). When power and a signal are applied to the servo motor (353), the wedge member (351) can be moved forward and backward, and can play a role in moving the wedge member (351) forward and backward within a specified precision error range.

[0070] The servo motor (353) may be designed to exert sufficient force to move the wedge member (351) forward or backward when the tension of the spring (334) of the fixed member (330) is released.

[0071] The fixing bolt (331) of the fixing member (330) can be installed by penetrating the wedge hole (352) of the wedge member (351). The first diameter of the wedge hole (352) is configured to be larger than the second diameter of the fixing bolt (331), so that when the fixing bolt (331) penetrates the wedge member (351), the wedge member (351) can move in a direction intersecting the longitudinal direction of the fixing bolt (331).

[0072] For example, the wedge member (351) may be movable in a direction perpendicular to the longitudinal direction of the fixing bolt (331). Specifically, the fixing bolt (331) is formed to extend in the longitudinal direction, which is the transport direction (X), and the wedge member (351) may be movable in the width direction (Y) perpendicular to the transport direction (X).

[0073] For example, the first diameter of the wedge hole (352) may have a range of 1.5 to 3 times the second diameter of the fixing bolt (331).

[0074] Hereinafter, with reference to FIGS. 3 to 5, the process of adjusting the alignment state of the restraint roll unit (100) will be briefly described as follows.

[0075] Fig. 3 is a plan view of a restraining roll device (30) according to one embodiment of the present invention. Fig. 4 is a drawing illustrating a process in which the alignment state of the restraining roll unit (100) is adjusted by moving the wedge member (351) of the adjustment unit (300) backward in the restraining roll device (30) of Fig. 3 so that the restraining roll device (30) rotates clockwise. Fig. 5 is a drawing illustrating a process in which the alignment state of the restraining roll unit (100) is adjusted by moving the wedge member (351) of the adjustment unit (300) forward in the restraining roll device (30) of Fig. 3 so that the restraining roll device (30) rotates counterclockwise.

[0076] When a misalignment occurs in the restraint roll (110) of the restraint roll device (30) and the alignment of the restraint roll unit (100) needs to be adjusted (see Fig. 10), the alignment of the restraint roll unit (100) can be adjusted to the correct position through the following process, as shown in Fig. 9. (see Fig. 9)

[0077] First, the tension of the spring (334) applied to the fixed member (330) can be released.

[0078] Next, the rotating member (350) can rotate the housing (130) around the rotation center unit (400) by advancing or reversing the wedge member (351) between the housing (130) and the adjustment frame (310). At this time, the servo motor (353) can determine the degree of advancing or reversing of the wedge member (351) by taking into consideration the misalignment of the restraining roll (110), etc.

[0079] Specifically, referring to FIG. 3, the housing (130) can be arranged parallel to the horizontal line (L) in the left-right direction. Thereafter, when the fixed state of the fixed member (330) is released, the wedge member (351) can be moved forward and backward in the left-right direction by the configuration of the servo motor (353). The wedge member (351) can have a shape in which the thickness increases from one side in the width direction (Y) to the other side in the width direction (Y).

[0080] Referring to Fig. 4, when the servo motor (353) moves the wedge member (351) to the left, a thin portion of the wedge member (351) is placed between the housing (130) and the adjustment frame (310), and the housing (130) can rotate clockwise with respect to the rotation center unit (400). That is, the restraint roll (110) can rotate upward, and the driving member (150) can rotate downward.

[0081] Referring to Fig. 5, when the servo motor (353) moves the wedge member (351) to the right, a thick portion of the wedge member (351) is placed between the housing (130) and the adjustment frame (310), and the housing (130) can rotate counterclockwise with respect to the rotation center unit (400). That is, the restraining roll (110) can rotate downward, and the driving member (150) can rotate upward.

[0082] Next, by applying tension to the spring (334) to the fixed member (330), the fixed member (330) can fix the housing (130), thereby supporting the aligned restraint roll device (30).

[0083] Fig. 6 is a cross-sectional view of part 'A' of Fig. 3. Fig. 7 is a cross-sectional view of part 'B' of Fig. 4. Fig. 8 is a cross-sectional view of part 'C' of Fig. 5.

[0084] The fixed member (330) may include a fixed bolt (331), a pressure module, and a tension adjustment module.

[0085] The fixed bolt (331) is installed through the adjustment frame (310), and one side can be fixed to the housing (130).

[0086] The pressurized module is installed on the other side of the fixed bolt (331), and can apply tensile force to the fixed bolt (331) by being pressed against the adjustment frame (310) by the tension of the spring (334).

[0087] The tension control module has a tension cylinder (332) that accommodates a pressurization module, and can control the tension of the spring (334) by using the pressure provided between the pressurization module and the tension cylinder (332).

[0088] The tension adjustment module can be placed on the opposite side of the housing (130) with the adjustment frame (310) in between.

[0089] The pressurizing module may include a cylinder shaft (333) and a spring (334).

[0090] The cylinder shaft (333) can be installed with a fixing bolt (331) passing through it, and one side can be arranged to be in contact with the adjustment frame (310). The cylinder shaft (333) can apply tensile force to the fixing bolt (331) while being pressed against the adjustment frame (310) by the tension of the spring (334).

[0091] The cylinder shaft (333) can be installed so as to slide on the fixed bolt (331) through which the fixed bolt (331) passes. One side of the cylinder shaft (333) can be arranged to be in contact with the adjusting frame (310), and the other side of the cylinder shaft (333) can be arranged to be in contact with the spring (334).

[0092] The cylinder shaft (333) may be spaced apart from the nut (331a) of the fixed bolt (331) while being supported by the tension of the spring (334). When the spring (334) is compressed, the cylinder shaft (333) moves toward the nut (331a) of the fixed bolt (331), and the distance between the cylinder shaft (333) and the nut (331a) of the fixed bolt (331) may be reduced.

[0093] At least a portion of the cylinder shaft (333) may be placed inside the tension cylinder (332) together with the spring (334), and the remaining portion may be placed so as to protrude from the tension cylinder (332) and come into contact with the adjustment frame (310).

[0094] A spring (334) may be installed between a tension cylinder (332) and a cylinder shaft (333) to provide tension so that the cylinder shaft (333) is brought into close contact with the adjustment frame (310). The spring (334) may be accommodated inside the tension cylinder (332). For example, the spring (334) may be configured as a coil spring (334), and one side of the cylinder shaft (333) may be fitted into the inside of the spring (334).

[0095] The tension control module may include a tension cylinder (332) and a pressure control member (335).

[0096] The tension cylinder (332) can accommodate a cylinder shaft (333) and form a pressure space (T) to which pressure is supplied together with the cylinder shaft (333).

[0097] The tension cylinder (332) is placed between the adjusting frame (310) and the nut (331a) of the fixing bolt (331), and the fixing bolt (331) is installed through it, and an accommodation space can be formed inside. A cylinder shaft (333) can be slidably coupled to the tension cylinder (332).

[0098] A part of the cylinder shaft (333) may be accommodated in the tension cylinder (332), and the remaining part of the cylinder shaft (333) may protrude from the tension cylinder (332) and be arranged to be in contact with the adjustment frame (310).

[0099] The pressure regulating member (335) can adjust the tension of the spring (334) by injecting or discharging pressure into the pressure space (T) between the cylinder shaft (333) and the tension cylinder (332).

[0100] The pressure regulating 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).

[0101] When pressure is injected into the pressure space (T) by the pressure regulating member (335), the spring (334) can be compressed as the pressure space (T) increases. When the spring (334) is compressed, the gap between the regulating frame (310) and the tension cylinder (332) can be narrowed, and the servo motor (353) can easily insert the wedge member (351) between the housing (130) and the regulating frame (310).

[0102] Specifically, when the spring (334) is compressed, the compressive force applied to the wedge member (351) may be reduced by the tensile force applied to the fixing bolt (331). Accordingly, the servo motor (353) can easily insert the wedge member (351) between the housing (130) and the adjustment frame (310).

[0103] For example, the pressure regulating member (335) can provide hydraulic pressure to the pressure space (T) by driving the hydraulic motor (335a).

[0104] First, when the hydraulic motor (335a) injects hydraulic oil into the pressure space (T) via the hydraulic supply line (335b), the pressure space (T) can increase. At this time, as the tension cylinder (332) moves relative to the cylinder shaft (333), the spring (334) can be compressed, and the distance between the tension cylinder (332) and the adjustment frame (310) can become shorter.

[0105] 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, as the tension cylinder (332) moves relative to the cylinder shaft (333), the spring (334) may be relaxed, and the distance between the tension cylinder (332) and the adjustment frame (310) may increase.

[0106] The fixed member (330) may include a fixed bolt (331), a cylinder shaft (333), a tension cylinder (332), a spring (334), and a pressure regulating member (335).

[0107] The fixed bolt (331) is installed through the adjustment frame (310), and one side can be fixed to the housing (130).

[0108] The cylinder shaft (333) can be installed with a fixing bolt (331) passing through it, and one side can be arranged to be in contact with the adjustment frame (310).

[0109] The tension cylinder (332) can accommodate a cylinder shaft (333) and form a pressure space (T) to which pressure is supplied together with the cylinder shaft (333).

[0110] A spring (334) can be installed between the tension cylinder (332) and the cylinder shaft (333) to provide tension so that the cylinder shaft (333) is in close contact with the adjustment frame (310).

[0111] The pressure regulating member (335) can adjust the tension of the spring (334) by injecting or discharging hydraulic or pneumatic pressure into the pressure space (T) between the cylinder shaft (333) and the tension cylinder (332) to move the tension cylinder (332) relative to the cylinder shaft (333).

[0112] Below, with reference to FIGS. 6 to 8, the details of the configuration in the process of adjusting the alignment state of the restraint roll unit (100) are described as follows.

[0113] Referring to FIG. 6, the fixed member (330) and the rotating member (350) can be installed in connection with each other.

[0114] The fixing bolt (331) of the fixed member (330) can be fixed to the housing (130) by penetrating the tension cylinder (332), cylinder shaft (333), adjustment frame (310), and wedge member (351).

[0115] Referring to FIGS. 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).

[0116] The wedge member (351) may be placed 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) placed between the housing (130) and the adjustment frame (310). Accordingly, the position of the housing (130) may be adjusted by the wedge member (351) being inserted between the housing (130) and the adjustment frame (310) and pushing the housing (130).

[0117] At this time, the adjustment frame (310) is fixed, and the alignment state of the restraint roll unit (100) can be adjusted as the housing (130) moves based on the fixed adjustment frame (310).

[0118] Referring to Fig. 7, when pressure is discharged from the pressure space (T) by the pressure regulating member (335), the spring (334) can be relaxed as the pressure space (T) becomes smaller.

[0119] When the spring (334) is relaxed, the gap between the adjustment frame (310) and the tension cylinder (332) can be widened. At this time, the servo motor (353) can move the wedge member (351) to the left, thereby placing a thin portion of the wedge member (351) between the housing (130) and the adjustment frame (310).

[0120] Referring to Fig. 8, when pressure is injected into the pressure space (T) by the pressure regulating member (335), the spring (334) can be compressed as the pressure space (T) increases.

[0121] 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) may move the wedge member (351) to the right, thereby placing a thick portion of the wedge member (351) between the housing (130) and the adjustment frame (310).

[0122] Next, with reference to FIGS. 9 and 10, components included in a steel plate cutting device according to one embodiment of the present invention will be specifically described.

[0123] Fig. 9 is a plan view of a steel plate cutting device according to one embodiment of the present invention. Fig. 10 is a drawing illustrating a misaligned state of a restraining roll unit (100) included in the steel plate cutting device of Fig. 9.

[0124] A steel plate cutting device according to one embodiment of the present invention may include a roll table, a cutting unit (20), and the aforementioned restraining roll device (30).

[0125] The roll table can transport a steel plate (S), and a plurality of transport roll units (10) can be arranged at a predetermined interval along the transport direction (X) of the steel plate (S).

[0126] The transfer roll unit (10) may include a transfer roll and a transfer motor. The transfer roll may transfer a steel plate (S) while rotating. The transfer motor may provide a driving force to rotate the transfer roll.

[0127] The cutting unit (20) can continuously cut the width direction (Y) end area of ​​the steel plate (S) being transported on the roll table.

[0128] The cutting unit (20) may have an upper blade positioned on the upper side and a lower blade positioned on the lower side.

[0129] When performing a process of sequentially cutting the side of the steel plate (S) by using the rotational-translational motion of the upper blade among the blades provided on both sides, the steel plate (S) can be kept stationary by the restraining roll device (30).

[0130] After the cutting stroke of the upper blade is completed, the restraining roll (110) of the restraining roll device (30) rotates while maintaining the pressure of pressing the steel plate (S) to advance the steel plate (S) by utilizing the frictional force between the restraining roll (110) of the restraining roll device (30) and the steel plate (S), but stops the steel plate (S) at a position where the cutting line on the side of the steel plate (S) is continuous, and at this position, the upper blade can perform a rotation-translational movement again. By repeating the series of feeding-stopping-cutting processes several times, both sides of the steel plate (S) can be cut evenly to a target width.

[0131] The restraining roll device (30) is arranged around the cutting unit (20) in the transport direction (X) of the steel plate (S), and can transport the steel plate (S) while being pressed.

[0132] Referring to Fig. 1, the restraining roll device (30) can transport and stop the steel plate (S) by using rotational force while restraining the upper and lower surfaces of the steel plate (S) with force.

[0133] The restraint roll device (30) may include a first restraint roll device (30a) and a second restraint roll device (30b).

[0134] The first restraining roll device (30a) may be arranged on the upstream side of the steel plate (S) being transported. The second restraining roll device (30) may be arranged on the downstream side of the steel plate (S) being transported, and may be installed spaced apart from the cutting unit (20) in the transport direction (X) of the steel plate (S).

[0135] Referring to Fig. 9, the first and second restraining roll devices (30) can transport and stop the steel plate (S) using rotational force while restraining the upper and lower surfaces of the steel plate (S) with force.

[0136] Referring to Fig. 10, the steel plate cutting device may cause the alignment of the restraining roll unit (100) to change due to unexpected external force, impact, etc., which may cause the restraining roll (110) of the restraining roll device (30) to become misaligned. If the restraining roll (110) of the restraining roll device (30) becomes misaligned, the straightness of the steel plate (S) cannot be secured, and the cutting line on the side of the steel plate (S) may deviate from a straight line, which may lead to a problem of a defective cutting surface of the steel plate (S).

[0137] In this case, it is necessary to adjust the alignment state of the restraint roll unit (100) so that the restraint roll device (30) in a distorted state as in Fig. 10 is aligned to the correct position as in Fig. 9.

[0138] Below, the process of adjusting the alignment state of the restraint roll unit (100) is briefly described as follows.

[0139] When a misalignment occurs in the restraint roll (110) of the restraint roll device (30) (see Fig. 10) and the alignment of the restraint roll unit (100) needs to be adjusted, the alignment of the restraint roll unit (100) can be adjusted to the correct position through the following process, as shown in Fig. 9. (see Fig. 9)

[0140] First, the tension of the spring (334) applied to the fixed member (330) of the restraint roll device (30) can be released.

[0141] Next, as described above, the rotating member (350) can rotate the housing (130) about the rotation center unit (400) by advancing or reversing the wedge member (351) between the housing (130) and the adjustment frame (310). At this time, the servo motor (353) can determine the degree of advancing or reversing of the wedge member (351) by taking into consideration the misalignment of the restraining roll (110), etc.

[0142] At this time, the degree of misalignment of the restraint roll device (30) can be collected by an image recognition unit (not shown), and the control unit (not shown) can align the restraint roll device (30) to a fixed position (see FIG. 9) so that the straightness of the steel plate (S) is secured based on the information collected from the image recognition unit.

[0143] Next, by applying tension of the spring (334) to the fixed member (330) to fix the housing (130), the alignment of the restraining roll device (30) can be completed.

[0144] In addition, it goes without saying that the steel plate cutting device of the present invention can be applied with various embodiments of the restraining roll device (30) having various embodiments described above.

[0145] Therefore, the configuration of the restraint roll unit (100), the pressurizing unit (200), and the adjustment unit (300) of the restraint roll device (30) utilized in the steel plate cutting device is the same as the configuration of the restraint roll device (30) as already described, and a detailed description thereof is omitted to avoid duplication.

[0146] 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 will be apparent to those skilled in the art that various modifications and variations are possible within a scope that does not depart from the technical spirit of the present invention described in the claims.

[0147] [Explanation of symbols]

[0148] 10: Transfer roll unit 20: Cutting unit

[0149] 30: Restraint roll device 30a: First restraint roll device

[0150] 30b: Second restraint roll device 100: Restraint roll unit

[0151] 100a: First restraint roll unit 100b: Second restraint roll unit

[0152] 110: Restraint roll 130: Housing

[0153] 150: Driving member 200: Pressurizing unit

[0154] 210: Pressurized cylinder 230: Cylinder bracket

[0155] 230a: 1st cylinder bracket 230b: 2nd cylinder bracket

[0156] 300: Adjustment unit 310: Adjustment frame

[0157] 330: Fixed member 330a: First fixed member

[0158] 330b: Second fixing member 331: Fixing bolt

[0159] 331a: Nut 332: Tension cylinder

[0160] 333: Cylinder shaft 334: Spring

[0161] 335: Pressure regulating member 335a: Hydraulic motor

[0162] 335b: Hydraulic supply line 350: Rotating member

[0163] 351: Wedge member 352: Wedge hole

[0164] 353: Servo motor 400: Rotation center unit

[0165] L: horizontal line S: steel plate

[0166] T: pressure space X: transport direction (front-backward)

[0167] Y: width direction (left and right direction) Z: up and down direction

Claims

1. A pair of restraining roll units that pressurize and restrain the upper and lower sides of the steel plate and transport the restrained steel plate while rotating; A pressing unit installed to connect between a pair of the above restraining roll units and applying a pressing force so that the pair of the above restraining roll units press the steel plate; and A restraint roll device including an adjustment unit that rotates the restraint roll unit around a rotation center unit to adjust the alignment state of the restraint roll unit.

2. In the first paragraph, the restraint roll unit, A restraining roll that presses the steel plate and transports the steel plate while rotating; A driving member connected to the restraining roll via a driving shaft and rotating the restraining roll; and A restraining roll device including a housing connected to the above rotation center unit and rotated relative to the rotation center unit by the above adjustment unit.

3. In the second paragraph, the control unit, An adjustment frame installed around the periphery of the above housing; A fixing member that is installed on the above adjustment frame and fixes the housing by being pressed against the adjustment frame by the tension of the spring while one side is fixed to the housing; and A restraining roll device including a rotating member that moves a wedge member forward or backward between the housing and the adjusting frame to rotate the housing around the rotation center unit.

4. In the third paragraph, the fixing member, A first fixing member installed in the above adjustment frame and fixing the housing by pressing it in a first direction; and A restraining roll device including a second fixing member installed in the above-mentioned adjustment frame and fixing the housing by pressing it in a second direction intersecting the first direction.

5. In the third paragraph, the fixing member is A fixing bolt installed through the above adjustment frame and having one side fixed to the housing; A pressurizing module installed on the other side of the above-mentioned fixed bolt and applying tensile force to the above-mentioned fixed bolt while being pressed against the above-mentioned adjusting frame by the tension of the spring; and A restraint roll device comprising a tension cylinder that accommodates the pressurization module, and a tension adjustment module that adjusts the tension of the spring by means of pressure provided between the pressurization module and the tension cylinder.

6. In paragraph 5, the pressurizing module, A cylinder shaft through which the above fixing bolt is installed and which is arranged so that one side is in contact with the adjustment frame; and A restraining roll device including 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.

7. In paragraph 6, the tension control module, A tension cylinder that accommodates the cylinder shaft and forms a pressure space to which pressure is supplied together with the cylinder shaft; and A restraint roll device including a pressure regulating member that adjusts the tension of the spring by injecting or discharging pressure into the pressure space between the cylinder shaft and the tension cylinder.

8. In the third paragraph, the fixing member is A fixing bolt installed through the above adjustment frame and having one side fixed to the housing; A cylinder shaft through which the above fixing bolt is installed and which is arranged so that one side is in contact with the above adjustment frame; A tension cylinder that accommodates the cylinder shaft and forms a pressure space to which pressure is supplied together with the cylinder shaft; A spring disposed on the opposite side of the adjustment frame with the cylinder shaft in between, and 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 restraint roll device including a pressure regulating member that adjusts the tension of the spring by injecting or discharging hydraulic or pneumatic pressure into the pressure space between the cylinder shaft and the tension cylinder to move the tension cylinder relative to the cylinder shaft.

9. In the third paragraph, the rotating member, A wedge member that is installed so as to be able to move forward and backward between the housing and the control frame, and whose thickness changes in the direction of movement; and A restraining roll device including a servo motor that moves the wedge member forward and backward to adjust the distance between the housing and the adjusting frame.

10. In paragraph 9, The fixing bolt of the above fixed member is installed by penetrating the wedge hole of the above wedge member, A restraining roll device in which the first diameter of the wedge hole is configured to be larger than the second diameter of the fixing bolt, and the wedge member is capable of moving in a direction intersecting the longitudinal direction of the fixing bolt when the fixing bolt penetrates the wedge member.

11. Roll table for transporting steel plates; A cutting unit that continuously cuts the widthwise end area of ​​a steel plate being transported on the above roll table; and A steel plate cutting device comprising a restraining roll device according to any one of claims 1 to 10, which is arranged around the cutting unit in the direction of transport of the steel plate and transports the steel plate while being pressed.

12. In the 11th paragraph, the restraint roll device, A first restraining roll device arranged on the upstream side of the steel plate being transported; and A steel plate cutting device comprising a second restraining roll device arranged on the downstream side of the steel plate being transported and spaced apart from the cutting unit in the transport direction of the steel plate.

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