A strip steel centering balancing device

Abstract

This invention discloses a strip steel centering and balancing device, comprising a centering cylinder group symmetrically arranged on both sides of a preset centerline for the operation of the strip steel, and a detection module for detecting the position of the strip steel. The centering cylinder group includes a first cylinder group and a second cylinder group symmetrically arranged on both sides of the centerline, with the strip steel located between the first cylinder group and the second cylinder group, and the telescopic ends of the first cylinder group and the second cylinder group respectively abutting against the two ends of the strip steel. The detection module is electrically connected to the control system of the centering cylinder group, and the control system simultaneously drives the first cylinder group and the second cylinder group according to the detection result of the detection module, so that the strip steel runs at the position of the centerline.

Description

Technical Field

[0001] This invention belongs to the field of strip steel production technology, and specifically relates to a strip steel centering and balancing device. Background Technology

[0002] During the production of steel strip, the process of centering the steel strip ensures the final quality of the steel strip. Aligning the steel strip with the center line ensures the stability of the steel strip rolling operation and the symmetry of the rolled plate shape, thus ensuring the smooth progress of the entire production process.

[0003] Currently, steel strip alignment is achieved through multiple manual adjustments by the operator. This adjustment method has significant limitations, wasting a lot of manpower and time. Furthermore, the inconsistency of manual operation can lead to misalignment of the steel strip. After long-term operation, the steel strip may become misaligned again, and it is impossible to adjust it in time, thus compromising the overall quality of the steel strip. Summary of the Invention

[0004] The purpose of this invention is to provide a strip centering and balancing device that automatically adjusts the centering position of the strip during its operation, ensuring consistent and stable strip quality.

[0005] The technical solution adopted by this invention to solve its technical problem is to propose a strip steel centering and balancing device, including a centering cylinder group symmetrically arranged on both sides of a preset centerline of the strip's operation, and a detection module for detecting the position of the strip. The centering cylinder group includes a first cylinder group and a second cylinder group symmetrically arranged on both sides of the centerline. The strip is located between the first cylinder group and the second cylinder group, and the telescopic ends of the first cylinder group and the second cylinder group respectively abut against the two ends of the strip. The detection module is electrically connected to the control system of the centering cylinder group. The control system simultaneously drives the first cylinder group and the second cylinder group according to the detection result of the detection module, so that the strip runs at the position of the centerline.

[0006] Furthermore, the first cylinder group includes at least one left centering cylinder, which is horizontally positioned to the left of the center line; the second cylinder group includes at least one right centering cylinder, which is horizontally positioned to the right of the center line, and the left centering cylinder and the right centering cylinder are positioned opposite each other, with the steel strip located between the left centering cylinder and the right centering cylinder.

[0007] Furthermore, the distance between the left centering cylinder and the right centering cylinder is the sum of the width of the steel strip and the maximum extension stroke of either the left centering cylinder or the right centering cylinder.

[0008] The distance between the telescopic ends of the left centering cylinder and the right centering cylinder is always equal to the width of the steel strip.

[0009] Furthermore, the detection module includes a first position sensor group and a second position sensor group. The first position sensor group includes at least one left position sensor, which is used to detect the extension and retraction stroke of the left centering cylinder. The second position sensor group includes at least one right position sensor, which is used to detect the extension and retraction stroke of the right centering cylinder.

[0010] Furthermore, the first position sensor group includes multiple left position sensors, and the first cylinder group includes multiple left centering cylinders, with each left position sensor corresponding to one left centering cylinder; the second position sensor group includes multiple right position sensors, and the second cylinder group includes multiple right centering cylinders, with each right position sensor corresponding to one right centering cylinder.

[0011] Furthermore, the control system includes a data processing module, which is used to calculate the width of the steel strip and the centerline angle of the front axle based on the detection data from the detection module. The centerline angle of the front axle is the angle between the centerline of the steel strip and the centerline during operation. The control system simultaneously drives the first cylinder group and the second cylinder group based on the centerline angle of the front axle to make the centerline angle of the front axle zero.

[0012] Furthermore, the detection module includes an image detection unit, which is suspended above or below the center line. The image detection unit is used to detect the position of the steel strip or the surface features of the steel strip, and the surface features include at least the surface image of the steel strip. The control system simultaneously drives the first hydraulic cylinder group and the second hydraulic cylinder group according to the position of the steel strip, so that the steel strip runs at the position of the center line.

[0013] Furthermore, the control system includes an image processing module, which is used to determine the operating state of the steel strip based on the surface features. The operating state of the steel strip includes at least an extrusion state and a normal state when not extruded. The control system simultaneously drives the first hydraulic cylinder group and the second hydraulic cylinder group according to the operating state of the steel strip, so that the operating state of the steel strip is the normal state.

[0014] Furthermore, both the left and right centering cylinders are equipped with proportional pressure valves and proportional directional valves in their hydraulic drive systems. The control system drives the left and right centering cylinders simultaneously through the proportional pressure valves and proportional directional valves.

[0015] The left and right centering cylinders clamp the steel belt, with their two telescopic ends abutting against the two sides of the steel belt respectively, jointly maintaining the running position of the steel belt and keeping it running at the center line.

[0016] Furthermore, the telescopic end is provided with a pusher for contacting the side end of the steel strip. The thickness of the pusher in the direction perpendicular to the surface of the steel strip is much greater than the thickness of the steel strip. A first component and a second component are provided on the side of the pusher facing the side end of the steel strip. The first component and the second component are spaced vertically to form a push gap. The height of the push gap is greater than the thickness of the steel strip, and the length of the first component is less than that of the second component.

[0017] The beneficial effects of this invention are as follows:

[0018] The present invention proposes a strip steel centering and balancing device, which determines the running position of the steel strip through a detection module, and adjusts the running position of the steel strip through symmetrically arranged centering cylinders, so that the steel strip runs on the center line. The automatic real-time adjustment of the steel strip centering enables the steel strip to run smoothly on the center line.

[0019] The centering and balancing device of this application can detect the running position of the steel strip in real time during the production process and make timely adjustments, which can effectively ensure the consistency of product quality, make the product quality stable and controllable, and improve production efficiency. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0021] Figure 1 This is a schematic diagram of a strip steel centering and balancing device according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram showing the alignment of the pusher component and the steel strip;

[0023] Figure 3 This is a structural diagram of a type of pusher component;

[0024] Figure 4 This is a schematic diagram of the hydraulic drive system layout for the centering cylinder;

[0025] Figure 5 This is a block diagram illustrating the principle of the control system for adjusting the centering of the steel strip. Detailed Implementation

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention and the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort. Furthermore, the design orientation only indicates the relative positional relationship between the components, not the absolute positional relationship.

[0027] This invention provides a strip steel centering and balancing device. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 It mainly includes a centering cylinder group symmetrically arranged on both sides of the preset centerline of the steel belt and a detection module for detecting the position of the steel belt. The centering cylinder group includes a first cylinder group and a second cylinder group symmetrically arranged on both sides of the centerline. The steel belt is located between the first cylinder group and the second cylinder group, and the extension ends of the first cylinder group and the extension ends of the second cylinder group respectively abut against the two ends of the steel belt. The detection module is electrically connected to the control system of the centering cylinder group. The control system drives the first cylinder group and the second cylinder group simultaneously according to the detection result of the detection module, so that the steel belt runs at the position of the centerline.

[0028] In this application, the running position of the steel belt should be located at the centerline, that is, the centerline of the steel belt itself overlaps with the centerline. The running position of the steel belt is adjusted by the centering cylinder group, specifically determined by the first cylinder group and the second cylinder group located on both sides of the steel belt. The first cylinder group and the second cylinder group jointly maintain the running position of the steel belt, so that the steel belt runs at the centerline position.

[0029] In one specific embodiment, the first cylinder group includes at least one left centering cylinder, which is horizontally positioned to the left of the center line; the second cylinder group includes at least one right centering cylinder, which is horizontally positioned to the right of the center line, and the left and right centering cylinders are arranged opposite to each other, with the steel strip located between the left and right centering cylinders.

[0030] Each left centering cylinder is paired with a right centering cylinder on the opposite side of the steel belt. The centering cylinders are arranged in pairs, and the pushing effect of each pair of centering cylinders on the steel belt is symmetrical, so as to avoid unnecessary damage to the steel belt when the centering cylinder pushes it.

[0031] Please see Figure 1 Taking a left centering cylinder and a right centering cylinder as an example, the left and right centering cylinders are in a "clamping" state on the steel belt. The extension and retraction ends of the two cylinders abut against the two sides of the steel belt respectively, and together maintain the running position of the steel belt, so that the steel belt runs at the center line position.

[0032] Taking the left centering cylinder as an example, its telescopic end can be equipped with a pusher for contacting the side end of the steel strip. The pusher can be located directly in front of the telescopic end. The thickness of the pusher in the direction perpendicular to the surface of the steel strip (vertical direction) is much greater than the thickness of the steel strip, which makes the alignment of the steel strip and the telescopic end more convenient and reduces the alignment accuracy requirements.

[0033] As one possible embodiment, the pusher can be a flat plate structure, such as... Figure 2 As shown, the feasible contact area between the telescopic end and the side end of the steel strip is effectively expanded; at this time, there can be a certain assembly error in the height of the centering cylinders on both sides, which does not affect the centering of the steel strip. As another feasible embodiment, such as Figure 3 As shown, a first component and a second component are provided on the side of the pusher facing the steel strip. The first component and the second component are arranged vertically to form a push gap. The height of the push gap is greater than the thickness of the steel strip, and the length of the first component is less than that of the second component. The two symmetrically arranged centering cylinders should be kept at the same height as much as possible so that the steel strip can run stably within the push gap of the pushers on both sides. The second component can bear the steel strip, and the first component can limit the deformation and jumping of the steel strip, so as to prevent it from moving out of the existing operating range.

[0034] Understandably, the distance between the left and right centering cylinders is the sum of the width of the steel belt and the maximum extension stroke of either the left or right centering cylinder. With a limited extension stroke, this allows the cylinders to adjust the steel belt within a wider range and keeps the steel belt in a stable "clamping" state with both cylinders. The steel belt is always affected by the push of the cylinders on both sides. Changes in the stroke of the cylinders change the position of the steel belt, resulting in a faster and more effective response.

[0035] In this application, the two ends of the steel belt abut against the telescopic ends of the centering cylinders on both sides. Based on the telescopic stroke of the centering cylinders, the running position of the steel belt can be calculated according to the distance between the two centering cylinders and the width of the steel belt, and then it can be determined whether the steel belt is on the center line.

[0036] In one specific embodiment, the detection module includes a first position sensor group and a second position sensor group. The first position sensor group includes at least one left position sensor, which is used to detect the extension and retraction stroke of the left centering cylinder. The second position sensor group includes at least one right position sensor, which is used to detect the extension and retraction stroke of the right centering cylinder.

[0037] For example, a left position sensor is set for each left centering cylinder and a right position sensor is set for each right centering cylinder to detect the extension and retraction stroke of the centering cylinders on both sides of the steel belt, thereby calculating the running position of the steel belt.

[0038] In practice, the centerline can be preset at the exact midpoint between two symmetrically arranged centering cylinders. Based on the extension and retraction stroke of the centering cylinders and the width of the steel belt, it can be directly compared to determine whether the steel belt's running position is within the centerline. Of course, the centerline can also deviate from the exact center position; the comparison can be made based on the distance of this deviation.

[0039] In practical implementation, multiple centering cylinders can be installed on both sides of the steel belt, namely multiple left centering cylinders and multiple right centering cylinders. The number of cylinders on both sides is the same, and the corresponding number of position sensors can be installed synchronously.

[0040] For example, the first position sensor group includes multiple left position sensors, and the first cylinder group includes multiple left centering cylinders, with each left position sensor corresponding to one left centering cylinder; the second position sensor group includes multiple right position sensors, and the second cylinder group includes multiple right centering cylinders, with each right position sensor corresponding to one right centering cylinder.

[0041] The detection data from the position sensors on both sides can better reflect the running posture of the steel belt. The running position of the steel belt can be calculated by the position detection data of multiple points. Based on the running position of the steel belt, the deviation angle between the centerline and the center line of the steel belt can be calculated, which is used as the basis for adjustment.

[0042] It is feasible for the control system to include a data processing module, which is used to calculate the steel strip width and the front axle centerline angle based on the detection data from the detection module. The front axle centerline angle is the angle between the centerline and the center line when the steel strip is running. The control system simultaneously drives the first cylinder group and the second cylinder group according to the front axle centerline angle, so that the front axle centerline angle is zero, that is, the centerline of the steel strip itself overlaps with the center line, and the steel strip runs at the position of the center line.

[0043] Specifically, when the centerline angle of the bridge is deviated to the left, the first hydraulic cylinder group / left centering cylinder is driven to increase the extension stroke, and the second hydraulic cylinder group / right centering cylinder is driven to reduce the extension stroke. The increased stroke and the reduced stroke are the same, so that the steel belt is always under the influence of the centering cylinders on both sides.

[0044] During the operation of the steel belt, ideally, the distance between the extension and retraction ends of the left and right centering cylinders is always the width of the steel belt. However, the possibility of adjustment deviations after long-term operation cannot be ruled out. In this case, the steel belt will be squeezed, causing it to deform.

[0045] In this application, the surface of the steel strip is generally a smooth and flat structural surface, which is equivalent to a mirror when laid flat. When the steel strip is slightly deformed, the surface will show phenomena such as halo and color change. These surface features can be directly observed. The running position of the steel strip can also be determined by image recognition.

[0046] While acquiring images of the steel strip in operation, the surface features of the steel strip can be acquired simultaneously. Based on these surface features, changes in the steel strip's own structure can be reflected, such as whether it has been squeezed and deformed, or whether the telescopic end of the centering cylinder is too long.

[0047] In one specific embodiment, the detection module includes an image detection unit, which is suspended above or below the center line. The image detection unit is used to detect the position of the steel strip or the surface features of the steel strip, and the surface features include at least the surface image of the steel strip. The control system simultaneously drives the first hydraulic cylinder group and the second hydraulic cylinder group according to the position of the steel strip, so that the steel strip runs at the position of the center line.

[0048] Specifically, the image detection unit acquires images of the running steel strip, can automatically identify and determine its running position, and transmits the determination result to the control system. Based on the centering cylinders on both sides as boundaries and the width of the steel strip as the inner limit, it calculates the distance between the boundary and the inner limit on both sides, and compares this distance with the distance between the centerline and the boundary on both sides, thereby determining whether the steel strip is running at the centerline position. The determination of surface features can be performed by the control system.

[0049] For example, the control system includes an image processing module, which is used to determine the running state of the steel strip based on surface features. The running state of the steel strip includes at least an extrusion state and a normal state when not extruded. The control system simultaneously drives the first hydraulic cylinder group and the second hydraulic cylinder group according to the running state of the steel strip, so that the running state of the steel strip is the normal state.

[0050] Understandably, the steel strip should not be under compression, whether it is compression caused by the centering cylinder or compression caused by changes in the steel strip's own structure. When the steel strip has an oversized compression area, it should be judged as being under compression. In this case, the risk of compression caused by the centering cylinder should be eliminated first. If the compression deformation is not caused by the centering cylinder, the machine should be stopped for self-inspection to ensure that the steel strip's own structure meets the standard in its initial state.

[0051] In practical implementation, it can be assumed that the steel strip's own structure is stable and conforms to the standard. Then, the extrusion state is caused by the centering cylinder. Therefore, this problem can be solved by simply adjusting the extension and retraction stroke of the centering cylinder, so that the steel strip can run normally under the push of the centering cylinder and not be deformed by its extrusion.

[0052] Of course, the steel strip's own structure can be inspected upstream of the centering and balancing device to ensure that the steel strip meets the production standards. This is also an existing feature of the production line. Therefore, it can be assumed that the steel strips arriving at the centering and balancing device all meet the production standards, that is, the steel strip's own structure is stable and meets the standards.

[0053] In the embodiments of this application, the image detection unit can also be implemented in conjunction with the position sensor. The position sensor limits the maximum value of the telescopic end spacing, and the surface features limit the minimum value of the telescopic end spacing. The adjustment is made in real time during the operation of the steel belt so that the steel belt runs smoothly at the position of the center line.

[0054] In the embodiments of this application, both the left centering cylinder and the right centering cylinder are equipped with a proportional pressure valve and a proportional directional valve in their hydraulic drive systems. The control system drives the left centering cylinder and the right centering cylinder simultaneously through the proportional pressure valve and the proportional directional valve.

[0055] Please see Figure 4 The left and right centering cylinders can share a main working pipeline (T1, P1), which is then divided into various hydraulic circuits (A, B) via a proportional directional valve. A proportional pressure valve can be installed on pipeline P to control the centering pressure. A separate control pipeline and drain pipeline can be installed at the proportional pressure valve, such as... Figure 4 As shown in the diagram, the proportional directional valve is used to control the speed and direction of the centering cylinder. Meanwhile, pressure sensors can be installed on their respective hydraulic circuits B1 and B2 to detect the cylinder pressure.

[0056] Please see Figure 4 , Figure 5 The pressure sensor, together with the aforementioned detection module, constitutes the detection system of the centering and balancing device. The proportional pressure valve and the proportional directional valve constitute the execution system of the centering and balancing device. The control system adjusts the parameters of the execution system based on the detection data of the detection system, thereby changing the extension and retraction stroke of the centering cylinder and adjusting the running position of the steel belt.

[0057] When using the centering and balancing device of this application:

[0058] During the strip alignment process, the position sensor detects the position of the steel plate's centerline in real time.

[0059] When the strip deviates from the centerline, for example, if the steel plate deviates to the left, the control system issues a command to control the hydraulic system. Through the proportional pressure valve and proportional directional valve, the pressure of the right cylinder is reduced, and the flow rate of the cylinder is reduced, while the pressure and flow rate of the left cylinder are increased. This causes the cylinder to deviate to the right, pushing the strip to move to the right and stopping when it is on the centerline. This process is continuously adjusted in real time to keep the strip in the centerline position.

[0060] It also employs sequential sensors to measure the width of the steel strip and the angle of the front axle centerline. The hydraulic drive system is adjusted using a closed-loop control program. If the strip deviates from the centerline, the hydraulic pressure automatically pushes the strip back to the centerline position according to the closed-loop control system. This provides strong support for the forming capacity of the pre-welding machine.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0062] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered within the scope of protection of the present invention.

Claims

1. A strip steel centering and balancing device, characterized in that, The system includes a centering cylinder group symmetrically arranged on both sides of a preset centerline for the operation of a steel strip, and a detection module for detecting the position of the steel strip. The centering cylinder group includes a first cylinder group and a second cylinder group symmetrically arranged on both sides of the centerline. The steel strip is located between the first cylinder group and the second cylinder group, and the telescopic ends of the first cylinder group and the second cylinder group respectively abut against the two ends of the steel strip. The detection module is electrically connected to the control system of the centering cylinder group. The control system simultaneously drives the first cylinder group and the second cylinder group according to the detection result of the detection module, so that the steel strip runs at the position of the centerline. Specifically, the detection module includes an image detection unit, which is used to detect the position of the steel strip and the surface features of the steel strip, wherein the surface features include at least the surface image of the steel strip; the control system simultaneously drives the first hydraulic cylinder group and the second hydraulic cylinder group according to the position of the steel strip, so that the steel strip runs at the position of the center line; The control system includes an image processing module, which is used to determine the operating state of the steel strip based on the surface features. The operating state of the steel strip includes at least an extrusion state and a normal state when not extruded. The control system simultaneously drives the first cylinder group and the second cylinder group according to the operating state of the steel strip, so that the operating state of the steel strip is the normal state.

2. The strip steel centering and balancing device according to claim 1, characterized in that, The first cylinder group includes at least one left centering cylinder, which is horizontally positioned to the left of the center line; the second cylinder group includes at least one right centering cylinder, which is horizontally positioned to the right of the center line, and the left centering cylinder and the right centering cylinder are positioned opposite each other, with the steel strip located between the left centering cylinder and the right centering cylinder.

3. The strip steel centering and balancing device according to claim 2, characterized in that, The distance between the left centering cylinder and the right centering cylinder is the sum of the width of the steel strip and the maximum extension stroke of either the left centering cylinder or the right centering cylinder.

4. The strip steel centering and balancing device according to claim 2, characterized in that, The detection module includes a first position sensor group and a second position sensor group. The first position sensor group includes at least one left position sensor, which is used to detect the extension and retraction stroke of the left centering cylinder. The second position sensor group includes at least one right position sensor, which is used to detect the extension and retraction stroke of the right centering cylinder.

5. A strip steel centering and balancing device according to claim 4, characterized in that, The first position sensor group includes multiple left position sensors, and the first cylinder group includes multiple left centering cylinders, with each left position sensor corresponding to one left centering cylinder; the second position sensor group includes multiple right position sensors, and the second cylinder group includes multiple right centering cylinders, with each right position sensor corresponding to one right centering cylinder.

6. A strip steel centering and balancing device according to claim 4, characterized in that, The control system includes a data processing module, which is used to calculate the width of the steel strip and the centerline angle of the front axle based on the detection data of the detection module. The centerline angle of the front axle is the angle between the centerline of the steel strip and the centerline during operation. The control system simultaneously drives the first hydraulic cylinder group and the second hydraulic cylinder group according to the centerline angle of the front axle, so that the centerline angle of the front axle is zero.

7. A strip steel centering and balancing device according to claim 2, characterized in that, The image detection unit is suspended above or below the center line.

8. A strip steel centering and balancing device according to claim 2, characterized in that, The hydraulic drive systems of the left and right centering cylinders are each equipped with a proportional pressure valve and a proportional directional valve. The control system drives the left and right centering cylinders simultaneously through the proportional pressure valve and the proportional directional valve.

9. A strip steel centering and balancing device according to claim 1, characterized in that, The telescopic end is provided with a pusher for contacting the side end of the steel strip. The thickness of the pusher in the direction perpendicular to the surface of the steel strip is much greater than the thickness of the steel strip. A first component and a second component are provided on the side of the pusher facing the side end of the steel strip. The first component and the second component are spaced vertically to form a push gap. The height of the push gap is greater than the thickness of the steel strip, and the length of the first component is less than that of the second component.

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