Front steel plate centering device of double-side shear and double-side shear equipment
By combining the fixed and moving side telescopic mechanisms with the guide rail and lifting mechanism, rolling friction centering of stainless steel plates is achieved, solving the surface scratch problem caused by traditional centering methods and improving centering accuracy and cutting quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-03-10
AI Technical Summary
Traditional centering methods can easily cause surface scratches when aligning stainless steel sheets, and the centering accuracy and flexibility are insufficient, affecting the quality of the cut edges and the utilization rate of materials.
By employing a fixed-side and a movable-side telescopic mechanism, combined with a guide rail and a lifting mechanism, the steel plate is aligned by rolling friction through rollers, avoiding sliding friction and improving alignment accuracy and flexibility.
It achieves surface protection of stainless steel sheets, improves centering accuracy and edge cutting quality, and reduces material waste.
Smart Images
Figure CN121624531A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of metal sheet processing equipment technology, and more specifically, to a double-sided shearing steel sheet centering device and a double-sided shearing device. Background Technology
[0002] Double-sided shears are key equipment in steel plate production lines for synchronously shearing both sides of steel plates. Their shearing accuracy directly affects the edge quality and material utilization. To accurately adjust the steel plate to the shearing centerline before shearing, a steel plate centering device is typically installed between the work rollers on the inlet side of the double-sided shear. Traditional centering methods mainly rely on pushers applying lateral thrust to the steel plate, causing it to slide on the work rollers or intermediate auxiliary structure until the set centering position is reached. These devices generally include a hydraulic or mechanical pusher arranged on one side, along with corresponding guiding and positioning structures to adjust the position of the steel plate.
[0003] However, when centering sheet materials with high surface quality requirements, such as stainless steel, the aforementioned traditional centering methods have significant shortcomings: the steel plate slides relative to the supporting surface under the action of the pusher, and the sliding friction easily produces scratches on the lower surface of the stainless steel plate, seriously affecting its surface grade and subsequent use. In addition, the traditional centering method has limited flexibility and control precision in adjusting the position of the steel plate, making it difficult to accurately control the cutting allowance while ensuring neat cut edges, which can easily lead to material waste or substandard cutting quality. Summary of the Invention
[0004] The technical problem to be solved by the present invention is: how to provide a centering device and double-sided shearing equipment that can effectively avoid surface damage during the centering process of stainless steel plates, while achieving high precision and flexible adjustment.
[0005] This invention provides a steel plate centering device before double-sided shearing, for installation between rollers at the inlet end of a double-sided shearing machine. It includes a fixed-side telescopic mechanism, a movable-side telescopic mechanism, a guide rail, a crossbeam, and a lifting mechanism. The fixed-side telescopic mechanism and the movable-side telescopic mechanism are installed opposite each other on the fixed and movable sides of the double-sided shearing machine. The telescopic ends of the fixed-side and movable-side telescopic mechanisms respectively abut against both ends of the steel plate in the width direction. The guide rail extends along the width direction of the steel plate and is installed below the steel plate. The telescopic ends of the fixed-side and movable-side telescopic mechanisms are disposed on the guide rail and are used to perform linear telescopic movements along the guide rail. The lifting end of the lifting mechanism is connected to the crossbeam and drives the crossbeam to move up and down. The crossbeam extends along the width direction of the steel plate, and a support roller is rotatably connected to the upper end of the crossbeam. The support roller is used for rolling contact with the lower surface of the steel plate.
[0006] Optionally, the double-sided shear front plate centering device further includes a first mounting base for installation on the moving side of the double-sided shear equipment. One end of the crossbeam is hinged to the lifting end of the lifting mechanism, and the other end is hinged to the first mounting base.
[0007] Optionally, the lifting mechanism includes a second mounting base, a hinged base, and a first hydraulic cylinder. The cylinder body of the first hydraulic cylinder is hinged to the second mounting base, the telescopic rod of the first hydraulic cylinder is hinged to the hinged base, and the hinged base is connected to the lower end of the crossbeam.
[0008] Optionally, the idler roller includes a support shaft, a bearing, and an annular component. The support shaft is connected to the crossbeam, and the axis of the support shaft is arranged along the length direction of the steel plate. The inner ring of the bearing is sleeved on the support shaft, and the annular component is sleeved on the outer ring of the bearing. The annular component is used for rolling connection with the lower surface of the steel plate.
[0009] Optionally, a plurality of the idler rollers are spaced apart along the length of the crossbeam, and the bearing is a spherical bearing, and the annular member is made of ductile iron.
[0010] Optionally, the upper end of the crossbeam is provided with a groove along its length, and the two ends of the support shaft are respectively connected to the two side walls of the groove.
[0011] Optionally, the telescopic ends of the fixed-side telescopic mechanism and the telescopic ends of the movable-side telescopic mechanism are respectively connected to trolleys, the trolleys are rotatably connected to the guide rail, and the upper end of the trolley is provided with a pusher head, which is used to abut against the end of the steel plate in the width direction.
[0012] Optionally, the pusher includes a connecting seat and an abutting roller. The connecting seat is connected to the upper end of the trolley, and the abutting roller is rotatably connected to the connecting seat. The axis of the abutting roller is vertically arranged, and the abutting roller is used to make rolling contact with the end of the steel plate in the width direction.
[0013] Optionally, the fixed-side telescopic mechanism includes a second hydraulic cylinder, and the movable-side telescopic mechanism includes a third hydraulic cylinder. The second hydraulic cylinder and the third hydraulic cylinder are arranged opposite each other along the width direction of the steel plate. The telescopic rods of the second hydraulic cylinder and the third hydraulic cylinder are respectively connected to the trolley, and the telescopic stroke of the second hydraulic cylinder is less than the telescopic stroke of the third hydraulic cylinder.
[0014] Compared with related technologies, the double-sided pre-shear steel plate centering device provided by the present invention has the following technical advantages: The double-sided shearing steel plate centering device provided by this invention, by setting a fixed-side telescopic mechanism and a movable-side telescopic mechanism and installing them respectively on the fixed side and movable side of the double-sided shearing equipment, and by setting them opposite to each other, allows the device to adapt to the inherent structure of the double-sided shearing equipment and apply thrust simultaneously from both ends of the steel plate width direction; by setting a guide rail extending along the steel plate width direction and setting the telescopic ends of the two sides of the telescopic mechanism on the guide rail, the thrust application point can move along a precise straight trajectory, ensuring the guiding accuracy and stability of the steel plate centering process; at the same time, by setting a lifting mechanism to drive the crossbeam to move up and down, the crossbeam and the rollers on it have a lifting function, so that the steel plate can be lifted away from the working roller track below when needed; by setting the crossbeam to extend along the steel plate width direction and rotatingly connecting the rollers at its upper end, when the crossbeam is raised, the lower surface of the steel plate only contacts the rollers; thus, during the centering process, when the steel plate moves laterally under the push of the two sides of the telescopic mechanism, its lower surface and the rollers experience rolling friction, rather than the sliding friction of the traditional technology. This series of structural synergies ultimately achieves efficient and precise steel plate centering while completely avoiding scratches on the lower surface of stainless steel plates caused by sliding friction, effectively protecting the surface quality of the plates. Furthermore, the improved centering accuracy lays the foundation for precise cutting by double-sided shearing, control of cutting allowance, and reduction of material waste.
[0015] In addition, the present invention also provides a double-sided shearing device, including the double-sided shearing front steel plate centering device as described above.
[0016] Compared with related technologies, the double-sided shearing device provided by the present invention, by setting the double-sided shearing front steel plate centering device as described above, has roughly the same technical effect as the above-mentioned double-sided shearing front steel plate centering device, and will not be repeated here. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the planar layout structure of the double-sided shearing front steel plate centering device according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the AA section structure; Figure 3 for Figure 1 Schematic diagram of the BB section structure; Figure 4 for Figure 3 Schematic diagram of the CC section.
[0018] Explanation of reference numerals in the attached figures: 10-Fixed side telescopic mechanism, 20-Moving side telescopic mechanism, 30-Guide rail, 40-Crossbeam, 50-Lifting mechanism, 51-Second mounting seat, 52-Hinged seat, 53-First hydraulic cylinder, 60-Idler roller, 61-Support shaft, 62-Bearing, 63-Ring component, 70-First mounting seat, 80-Trolley, 90-Push head, 91-Connecting seat, 92-Abutting roller, 01-Steel plate. Detailed Implementation
[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.
[0021] In the description of this invention, the orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.
[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0023] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.
[0024] like Figures 1 to 3As shown, this embodiment of the invention provides a steel plate centering device before double-sided shearing, for installation between rollers at the inlet end of a double-sided shearing machine. It includes a fixed-side telescopic mechanism 10, a movable-side telescopic mechanism 20, a guide rail 30, a crossbeam 40, and a lifting mechanism 50. The fixed-side telescopic mechanism 10 and the movable-side telescopic mechanism 20 are installed opposite to each other on the fixed and movable sides of the double-sided shearing machine. The telescopic ends of the fixed-side telescopic mechanism 10 and the movable-side telescopic mechanism 20 respectively abut against both ends of the steel plate 01 in the width direction. The guide rail 30 runs along the steel plate... The plate 01 extends in the width direction and is installed below the steel plate 01. The telescopic ends of the fixed-side telescopic mechanism 10 and the telescopic ends of the movable-side telescopic mechanism 20 are set on the guide rail 30 and are used to perform linear telescopic movements along the guide rail 30 respectively. The lifting end of the lifting mechanism 50 is connected to the crossbeam 40 and is used to drive the crossbeam 40 to move up and down. The crossbeam 40 extends in the width direction of the steel plate 01, and the upper end of the crossbeam 40 is rotatably connected to a roller 60. The roller 60 is used to roll in contact with the lower surface of the steel plate 01.
[0025] It should be noted that the double-sided shearing equipment typically includes a fixed-side frame with a fixed position and a movable-side frame whose position can be adjusted along the width direction of the steel plate 01 to adapt to shearing steel plates 01 of different widths. The fixed-side telescopic mechanism 10 and the movable-side telescopic mechanism 20 of this centering device are respectively installed on the foundation or frame of the fixed side and the movable side, thereby matching the reference of its centering action with the double-sided shearing main unit. The core functional sequence of this centering device is "lifting-centering-lowering". When the steel plate 01 is conveyed from the previous process roller conveyor to the designated area before the double-sided shearing, that is, when it is conveyed to the working roller conveyor at the entrance end of the double-sided shearing equipment, as... Figure 1 As shown, the incoming direction of steel plate 01 is as follows: Figure 1As indicated by the hollow arrow, which also points along the length of the steel plate 01, multiple sets of the fixed-side telescopic mechanism 10, the movable-side telescopic mechanism 20, and the guide rail 30 of this centering device are respectively arranged and distributed between the working rollers at the entrance end of the double-sided shearing equipment. Simultaneously, multiple sets of the lifting mechanism 50, the crossbeam 40, and the first mounting base 70 are also respectively arranged and distributed between the working rollers to avoid interference with the working rollers or other components of the double-sided shearing equipment, ensuring they do not affect each other. During the centering process, the lifting mechanism 50 first activates, raising the support roller 60 via the crossbeam 40, thereby smoothly lifting the steel plate 01 away from the surface of the fixed roller, causing the steel plate 01 to disengage from the roller. Subsequently, the fixed-side telescopic mechanism 10 and the movable-side telescopic mechanism 20 work together according to the instructions of the control system. Their telescopic ends (such as via the trolley 80 and the pusher 90) move towards or in opposite directions along the guide rail 30, precisely pushing the ends of the steel plate 01 in the width direction from both sides, forcing the steel plate 01 to slide laterally on the surface of the roller 60 above the crossbeam 40 until it is adjusted to the set shearing centerline position. After centering, the lifting mechanism 50 drives the crossbeam 40 to descend, and the steel plate 01 falls back to the original roller table plane, and is then sent by the roller table to the subsequent double-sided shearing station for shearing. Throughout the process, the lower surface of the steel plate 01 only contacts the rotatable roller 60, and the friction is rolling friction.
[0026] Specifically, the fixed-side telescopic mechanism 10 and the movable-side telescopic mechanism 20 can be linear drive components such as hydraulic cylinders, electric push rods, or pneumatic cylinders. The guide rail 30 is typically two parallel precision linear guide rails, which can be supported by welding two channel steel components, providing stable guidance and preventing, for example, the trolley 80 and push head 90 from slipping off the side, ensuring the straightness of the telescopic end's movement trajectory. The crossbeam 40 is a long strip structure with sufficient strength and rigidity, used to support the idler roller 60 and transmit lifting force. The idler roller 60 is arranged along the length of the crossbeam 40, and its total coverage should be able to accommodate the maximum width of the required centering steel plate 01, providing continuous and uniform rolling support for the steel plate 01.
[0027] In this embodiment, the double-sided shearing steel plate centering device provides a fixed-side telescopic mechanism 10 and a movable-side telescopic mechanism 20, which are respectively installed on the fixed side and movable side of the double-sided shearing equipment and arranged opposite to each other. This allows the device to adapt to the inherent structure of the double-sided shearing equipment and apply thrust simultaneously from both ends of the steel plate 01 in the width direction. Furthermore, by providing a guide rail 30 extending along the width direction of the steel plate 01 and placing the telescopic ends of the two telescopic mechanisms on the guide rail 30, the thrust application point can move along a precise linear trajectory, ensuring the centering process of the steel plate 01. The system ensures guiding accuracy and stability. Simultaneously, a lifting mechanism 50 drives the crossbeam 40 to move up and down, enabling the crossbeam 40 and its rollers 60 to lift. This allows the steel plate 01 to be lifted away from the lower working roller conveyor when needed. Furthermore, by extending the crossbeam 40 along the width of the steel plate 01 and rotatably connecting the rollers 60 at its upper end, when the crossbeam 40 is raised, the lower surface of the steel plate 01 only contacts the rollers 60. Therefore, during the centering process, as the steel plate 01 moves laterally under the push of the telescopic mechanisms on both sides, its lower surface experiences rolling friction with the rollers 60, rather than the sliding friction found in traditional technologies. This series of structural synergies ultimately achieves efficient and precise centering of the steel plate 01 while completely avoiding scratches on the lower surface of stainless steel plates caused by sliding friction, effectively protecting the surface quality of the plate. The improved centering accuracy also lays the foundation for precise cutting by the subsequent double-sided shearing, control of cutting allowance, and reduction of material waste.
[0028] Optionally, such as Figure 1 and Figure 3 As shown, the double-sided shear front plate centering device also includes a first mounting base 70 for installation on the moving side of the double-sided shear equipment. One end of the crossbeam 40 is hinged to the lifting end of the lifting mechanism 50, and the other end is hinged to the first mounting base 70.
[0029] Specifically, a first mounting base 70 is provided, and the crossbeam 40 is mounted using a hinged connection at both ends, forming a simply supported beam structure. The first mounting base 70 is fixedly mounted on the moving side foundation or structural component of the double-sided shear equipment. This mounting method allows the crossbeam 40 to swing around its hinge point during lifting and lowering, such as... Figure 3 As shown in the figure, the dotted line of the crossbeam 40 indicates its initial position, which is in an inclined state. The lifting mechanism 50 can be installed below the working roller conveyor, that is, in the pit below the steel plate 01. When it is necessary to lift the steel plate 01 away from the working roller conveyor, the lifting mechanism 50 only needs to lift one end of the crossbeam 40. When the crossbeam 40 is lifted to the horizontal, all or most of the rollers 60 on the crossbeam 40 just support the steel plate 01. Of course, it should be understood that the installation height of the first mounting seat 70 needs to meet the requirement that when the crossbeam 40 is lifted to the horizontal, the upper end face of the rollers 60 on it should be higher than the upper end face of the working roller conveyor.
[0030] In this embodiment, by designing the crossbeam 40 with one end hinged to the lifting mechanism 50 and the other end hinged to the first mounting base 70 fixed on the moving side, the application of the lifting action is more reasonable, and the stress state of the crossbeam 40 is improved. This design not only reduces the weight of the crossbeam 40 that the lifting mechanism 50 needs to overcome, making the lifting process smoother and power consumption lower, but also enhances the structural following and overall stability between the centering device and the moving side of the double-sided shear, which is beneficial to maintaining centering accuracy for a long time when the position of the moving side changes. Moreover, only one lifting mechanism 50 is needed to drive the lifting of one crossbeam 40, saving costs.
[0031] Optionally, such as Figure 3 As shown, the lifting mechanism 50 includes a second mounting base 51, a hinged base 52, and a first hydraulic cylinder 53. The cylinder body of the first hydraulic cylinder 53 is hinged to the second mounting base 51, and the telescopic rod of the first hydraulic cylinder 53 is hinged to the hinged base 52. The hinged base 52 is connected to the lower end of the crossbeam 40.
[0032] Specifically, the second mounting base 51 is fixed below the working roller conveyor, that is, in the pit below the steel plate 01. The cylinder body of the first hydraulic cylinder 53 is connected to the second mounting base 51 by a pin, and its telescopic rod is connected to the hinge seat 52 by a pin, forming a rotatable hinge point. This double-hinged structure allows the axis of the first hydraulic cylinder 53 to adaptively adjust with the movement posture of the crossbeam 40 when pushing the crossbeam 40, avoiding unnecessary lateral bending moment on the hydraulic cylinder, extending the service life of the hydraulic cylinder, and ensuring the effective transmission of the pushing force.
[0033] In this embodiment, by employing an articulated lifting drive mechanism consisting of a second mounting base 51, a hinged base 52, and a first hydraulic cylinder 53, not only is reliable lifting power provided, but its adaptive articulation characteristics also effectively solve the alignment problem between the hydraulic cylinder and the crossbeam 40 caused by machining, installation errors, or load imbalance. This ensures that the crossbeam 40 can be smoothly and easily lifted and lowered, thereby ensuring that the steel plate 01 is stably lifted and placed, preventing the steel plate 01 from tilting or slipping during the lifting process, and creating conditions for subsequent precise alignment.
[0034] Optionally, such as Figure 3 and Figure 4 As shown, the idler roller 60 includes a support shaft 61, a bearing 62, and an annular member 63. The support shaft 61 is connected to the crossbeam 40, and the axis of the support shaft 61 is arranged along the length direction of the steel plate 01. The inner ring of the bearing 62 is sleeved on the support shaft 61, and the annular member 63 is sleeved on the outer ring of the bearing 62. The annular member 63 is used for rolling connection with the lower surface of the steel plate 01.
[0035] Specifically, the support shaft 61 is fixedly mounted on the crossbeam 40, and its end can be fixed by a shaft end baffle, serving as the rotation center shaft of the idler roller 60. Holes can be drilled at the shaft end of the support shaft 61 and at the contact surface with the bearing 62 to form a channel for the bearing 62's lubricating oil. The bearing 62 is the core component for achieving low-resistance rotation of the annular component 63 relative to the support shaft 61. Its inner ring has an interference or transition fit with the support shaft 61, and its outer ring fits the inner hole of the annular component 63. The annular component 63, as a rolling element that directly contacts the lower surface of the steel plate 01, can have its outer cylindrical surface designed to be wear-resistant and relatively rounded to avoid scratching the lower surface of the steel plate 01, further reducing rolling resistance and the impact on the surface of the steel plate 01.
[0036] In this embodiment, by specifying the idler roller 60 as a rolling unit composed of a support shaft 61, a bearing 62, and an annular component 63, the rolling friction connection between the steel plate 01 and the support component is clearly achieved. The bearing 62 greatly reduces the coefficient of friction of the rotating annular component 63, allowing the steel plate 01 to move easily under a small thrust, making centering operation labor-saving and precise. This structure is the key execution unit that enables this device to achieve "rolling instead of sliding" and protect the surface of the steel plate.
[0037] like Figure 1 , Figure 3 and Figure 4 As shown, a plurality of the idler rollers 60 are spaced apart along the length of the crossbeam 40, and the bearing 62 is a spherical bearing, and the annular member 63 is made of ductile iron.
[0038] Specifically, multiple idler rollers 60 are spaced apart along the length of the crossbeam 40 and evenly distributed to provide continuous and uniform support for steel plates 01 of different widths, preventing the steel plates 01 from flexing due to insufficient support points. A spherical plain bearing is chosen as the bearing 62 because its spherical joint structure has a unique self-aligning function. Even if the mounting axis of the support shaft 61 is not completely perpendicular to the actual adjustment direction of the steel plate 01, the spherical plain bearing can ensure that the annular component 63 can rotate freely with the movement direction of the steel plate 01 through slight inner ring deflection, always maintaining a rolling state. This avoids the sliding friction or even jamming that may occur with ordinary bearings due to directional deviation. The annular component 63 is made of ductile iron because its internal spherical graphite structure has excellent shock absorption, noise reduction, and self-lubricating properties. When rolling in contact with the stainless steel plate, it can further buffer micro-impacts, minimizing the possibility of micro-scratches on the surface of the high-gloss steel plate 01.
[0039] In this embodiment, the advantages of rolling friction are synergistically amplified by combining three features: "multiple idler rollers spaced 60 times," "spherical bearing self-aligning," and "ductile iron material." The multiple idler rollers ensure uniform and stable support; the spherical bearings eliminate the risk of sliding friction caused by uncertainty in the alignment direction; and the ductile iron material provides ultimate surface protection from a materials science perspective. This combination enables the device to reliably and efficiently achieve scratch-free alignment of precision plates such as stainless steel sheets even under complex working conditions.
[0040] Optionally, such as Figure 3 and Figure 4 As shown, the upper end of the crossbeam 40 is provided with a groove along its length, and the two ends of the support shaft 61 are respectively connected to the two side walls of the groove.
[0041] Specifically, the groove formed along the length of the upper end of the crossbeam 40 can have a rectangular or U-shaped cross-section. The two ends of the support shaft 61 are reliably connected to the two side walls of the groove via welding, bolting, or by bearings fixed to the side walls of the groove. This grooved and double-sided connected structure provides an embedded installation space for the support shaft 61, making installation more convenient and positioning more accurate. It also effectively limits the axial movement or circumferential rotation that the support shaft 61 may experience when bearing the load of the steel plate 01, enhancing the rigidity and stability of the installation. Simultaneously, the groove structure also allows for flexible adjustment of the installation spacing of each idler roller 60 along the length of the crossbeam to adapt to different process requirements.
[0042] In this embodiment, by creating a groove at the upper end of the crossbeam 40 and connecting both ends of the support shaft 61 to the sidewall of the groove, a stable and precise installation foundation is provided for the core rotating shaft of the idler roller 60. This installation method makes the force on the support shaft 61 more reasonable, effectively distributing the load of the weight and thrust of the steel plate 01 to the main structure of the crossbeam 40, avoiding the problem of insufficient rigidity that may be caused by cantilever installation. The stable installation of the support shaft 61 directly ensures the stability and positional accuracy of the rotation center of the ring part 63 of the idler roller 60, thereby ensuring the uniformity and reliability of the rolling friction state when the steel plate 01 moves on the idler roller 60. It avoids the risk of sliding friction that may be indirectly caused by the idler roller 60 jamming or abnormal deflection due to the loosening or deformation of the support shaft 61. From the perspective of structural rigidity, this further consolidates the effect of the device in preventing scratches on the surface of the steel plate 01.
[0043] Optionally, such as Figure 1 and Figure 2 As shown, the telescopic ends of the fixed-side telescopic mechanism 10 and the telescopic ends of the movable-side telescopic mechanism 20 are respectively connected to a trolley 80. The trolley 80 is rotatably connected to the guide rail 30. A push head 90 is provided at the upper end of the trolley 80. The push head 90 is used to abut against the end of the steel plate 01 in the width direction.
[0044] Specifically, the trolley 80 typically includes a frame and rollers (such as V-shaped wheels or flat wheels) mounted at the bottom of the frame. The rollers cooperate with the rail surface of the guide rail 30 to achieve rolling movement. The pusher 90 is mounted on the upper end of the trolley 80 and moves with it. This transmission chain of "telescopic mechanism - trolley 80 - pusher 90" converts the linear thrust of the hydraulic cylinder into precise linear motion of the trolley 80 along the guide rail 30, which is then acted on the edge of the steel plate 01 through the pusher 90. The use of the trolley 80 transfers the sliding friction (relative to the stationary base) at the telescopic end of the telescopic mechanism to the rolling friction between the rollers of the trolley 80 and the guide rail 30, significantly reducing movement resistance and improving response speed and centering efficiency.
[0045] In this embodiment, by introducing a trolley 80 with rollers as the motion carrier of the telescopic mechanism's actuator, the friction mode of the key kinematic pair is changed from sliding to rolling. This significantly reduces the friction force that the fixed-side telescopic mechanism 10 and the moving-side telescopic mechanism 20 need to overcome during drive alignment, allowing for the selection of smaller drive units (such as hydraulic cylinders), lower energy consumption, more sensitive system response, and more precise positioning control, thereby improving the efficiency and accuracy of the entire alignment process.
[0046] Optionally, such as Figure 1 and Figure 2 As shown, the pusher 90 includes a connecting seat 91 and an abutting roller 92. The connecting seat 91 is connected to the upper end of the trolley 80, and the abutting roller 92 is rotatably connected to the connecting seat 91. The axis of the abutting roller 92 is vertically arranged, and the abutting roller 92 is used to make rolling contact with the end of the steel plate 01 in the width direction.
[0047] Specifically, the abutment roller 92 is mounted on the connecting seat 91 via a vertical shaft and can rotate freely around the vertical axis. When the pusher head 90 pushes the steel plate 01, the side of the steel plate 01 contacts the cylindrical surface of the abutment roller 92. As the steel plate 01 moves laterally, the abutment roller 92 rotates, thereby converting the sliding friction between the steel plate 01 and the pusher head 90 into rolling friction.
[0048] In this embodiment, by setting the pusher 90 as an abutment roller 92 that can rotate around a vertical axis, the frictional properties of the lateral force-bearing point of the steel plate 01 are changed. This makes the side edge of the steel plate 01 roll contact with the pusher 90 when it moves laterally, further reducing the frictional resistance on the side of the steel plate 01, avoiding possible wear or deformation of the steel plate 01 edge due to sliding and pushing, making the centering action smoother and more precise, especially beneficial for protecting the finished edge, and improving the final cutting quality of the double-sided shear.
[0049] Optionally, such as Figure 1 and Figure 2As shown, the fixed-side telescopic mechanism 10 includes a second hydraulic cylinder, and the movable-side telescopic mechanism 20 includes a third hydraulic cylinder. The second hydraulic cylinder and the third hydraulic cylinder are arranged opposite each other along the width direction of the steel plate 01. The telescopic rods of the second hydraulic cylinder and the third hydraulic cylinder are respectively connected to the trolley 80, and the telescopic stroke of the second hydraulic cylinder is less than that of the third hydraulic cylinder.
[0050] Specifically, the fixed side typically corresponds to the side of the frame in a double-sided shearing machine that is fixed in position, and the required stroke range for adjusting the steel plate 01 is relatively small. The moving side, on the other hand, corresponds to the side of the frame in the double-sided shearing machine that can move laterally. To accommodate shearing steel plates 01 of different widths, the position of the moving side frame itself is variable, therefore the centering device pusher in front of it requires a larger stroke adjustment range to match. Setting the extension stroke of the second hydraulic cylinder (fixed side) to be less than that of the third hydraulic cylinder (moving side) is precisely to economically and rationally adapt to this equipment layout and operating conditions, avoiding structural redundancy and cost waste caused by excessively long strokes of the fixed-side hydraulic cylinder.
[0051] In this embodiment, by configuring different strokes for the telescopic mechanisms on the fixed and moving sides, the device demonstrates a deep adaptation and integrated design philosophy with the double-sided shear main unit structure. This differentiated stroke design not only fully meets the centering requirements of steel plates 01 of all widths, but also optimizes the structural dimensions and manufacturing costs of the device, enhancing the product's practicality and economy. It ensures that regardless of the position of the moving side, the centering device can efficiently and accurately position the steel plate 01 onto the correct shearing centerline.
[0052] In addition, another embodiment of the present invention provides a double-sided shearing device, including the double-sided shearing pre-slab centering device as described above.
[0053] In this embodiment, the double-sided shearing device provided in this embodiment has the same technical effect as the double-sided shearing pre-steel plate centering device described above, and will not be repeated here.
[0054] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.
Claims
1. A double edge shear front plate alignment device for installation between the roller beds at the entry end of a double edge shear apparatus, characterised in that, The device comprises a fixed side telescopic mechanism (10), a moving side telescopic mechanism (20), a guide rail (30), a crossbeam (40) and a lifting mechanism (50), the fixed side telescopic mechanism (10) and the moving side telescopic mechanism (20) are arranged on the fixed side and the moving side of the double-sided shearing device respectively, the telescopic ends of the fixed side telescopic mechanism (10) and the moving side telescopic mechanism (20) are arranged on the two ends of the steel plate (01) in the width direction, the guide rail (30) extends along the width direction of the steel plate (01) and is arranged below the steel plate (01), the telescopic ends of the fixed side telescopic mechanism (10) and the moving side telescopic mechanism (20) are arranged on the guide rail (30) and are arranged to move linearly along the guide rail (30) respectively, the lifting end of the lifting mechanism (50) is connected with the crossbeam (40) and is arranged to drive the crossbeam (40) to move up and down, the crossbeam (40) extends along the width direction of the steel plate (01), and the upper end of the crossbeam (40) is rotatably connected with a supporting roller (60), and the supporting roller (60) is arranged to be rotatably connected with the lower surface of the steel plate (01).
2. The double-plate alignment device of claim 1, wherein The device further comprises a first mounting seat (70) arranged on the moving side of the double-sided shearing device, one end of the crossbeam (40) is hingedly connected with the lifting end of the lifting mechanism (50), and the other end is hingedly connected with the first mounting seat (70).
3. The double legged shear lead centering device of claim 2, wherein, The lifting mechanism (50) comprises a second mounting seat (51), a hinged seat (52) and a first hydraulic cylinder (53), the cylinder body of the first hydraulic cylinder (53) is hingedly connected with the second mounting seat (51), the telescopic rod of the first hydraulic cylinder (53) is hingedly connected with the hinged seat (52), and the hinged seat (52) is connected with the lower end of the crossbeam (40).
4. The double-shouldered shear lead alignment device of claim 1, wherein, The supporting roller (60) comprises a supporting shaft (61), a bearing (62) and a ring-shaped part (63), the supporting shaft (61) is connected with the crossbeam (40), the axis of the supporting shaft (61) extends along the length direction of the steel plate (01), the inner ring of the bearing (62) is sleeved on the supporting shaft (61), and the ring-shaped part (63) is sleeved on the outer ring of the bearing (62), and the ring-shaped part (63) is arranged to be rotatably connected with the lower surface of the steel plate (01).
5. The double-shouldered shear lead alignment device of claim 4, wherein, A plurality of supporting rollers (60) are arranged at intervals along the length direction of the crossbeam (40), the bearing (62) is a joint bearing, and the ring-shaped part (63) is made of nodular cast iron.
6. The double-shouldered shear lead alignment device of claim 4, wherein, The upper end of the crossbeam (40) is provided with a groove along the length direction thereof, and the two ends of the supporting shaft (61) are connected with the two side walls of the groove respectively.
7. The double-shouldered shear lead alignment device of claim 1, wherein, The telescopic ends of the fixed side telescopic mechanism (10) and the moving side telescopic mechanism (20) are respectively connected with a trolley (80), the trolley (80) is rotatably connected with the guide rail (30), the upper end of the trolley (80) is provided with a pushing head (90), and the pushing head (90) is arranged to abut against the end of the steel plate (01) in the width direction.
8. The double-shouldered shear lead alignment device of claim 7, wherein, The pushing head (90) comprises a connecting seat (91) and an abutting roller (92), the connecting seat (91) is connected to the upper end of the trolley (80), the abutting roller (92) is rotationally connected to the connecting seat (91), and the axis of the abutting roller (92) is vertically arranged, and the abutting roller (92) is used for rolling contact with the end of the steel plate (01) in the width direction.
9. The double-shouldered shear lead alignment device of claim 7, wherein, The fixed side telescopic mechanism (10) comprises a second hydraulic cylinder, the moving side telescopic mechanism (20) comprises a third hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are arranged opposite along the width direction of the steel plate (01), the telescopic rod of the second hydraulic cylinder and the telescopic rod of the third hydraulic cylinder are respectively connected with the trolley (80), and the telescopic stroke of the second hydraulic cylinder is smaller than that of the third hydraulic cylinder.
10. A double edge shearing apparatus characterized by, A steel plate centering device before double-edge shearing, comprising the steel plate centering device according to any one of claims 1-9.