Strip steel centering and balancing device

Abstract

The invention discloses a strip steel centering balancing device which comprises centering oil cylinder sets symmetrically arranged on the two sides of a preset steel strip operation center line and a detection module used for detecting the position of a steel strip, and the centering oil cylinder sets comprise the first oil cylinder set and the second oil cylinder set which are symmetrically arranged on the two sides of the center line. The steel belt is located between the first oil cylinder set and the second oil cylinder set, and the telescopic end of the first oil cylinder set and the telescopic end of the second oil cylinder set abut against the two side ends of the steel belt respectively. The detection module is electrically connected with a control system of the centering oil cylinder set, and the control system drives the first oil cylinder set and the second oil cylinder set at the same time according to the detection result of the detection module so that the steel belt can run at the position of the center line.

Description

Technical Field

[0001] The invention belongs to the technical field of strip steel production, and in particular relates to a strip steel centering and balancing device. Background Art

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

[0003] Currently, steel belt alignment is achieved through multiple manual adjustments by the operator in advance. This adjustment method has great limitations. It not only wastes a lot of manpower and time, but also causes consistency deviations in manual operation, resulting in misalignment of the steel belt. After long-term operation, the steel belt may deviate again. At this time, it is impossible to make timely adjustments, and the overall quality of the steel belt cannot be guaranteed. Summary of the Invention

[0004] The purpose of the present invention is to provide a strip centering and balancing device, which automatically adjusts the centering position of the steel strip during its operation and ensures the consistency and stability of the steel strip quality.

[0005] The technical solution adopted by the present invention to solve its technical problem is to propose a strip centering and balancing device, including a centering cylinder group symmetrically arranged on both sides of a preset center line of the steel strip operation 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 center line, the steel strip is located between the first cylinder group and the second cylinder group, and the telescopic end of the first cylinder group and the telescopic end of the second cylinder group respectively abut against the two side ends of the steel strip; 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 steel strip runs at the position of the center line.

[0006] Furthermore, the first cylinder group includes at least one left-centering cylinder, which is horizontally arranged on the left side of the center line; the second cylinder group includes at least one right-centering cylinder, which is horizontally arranged on the right side of the center line, and the left-centering cylinder and the right-centering cylinder are arranged opposite to each other, and the steel belt is 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 belt and the maximum telescopic stroke of the left centering cylinder or the right centering cylinder.

[0008] The distance between the telescopic end of the left centering oil cylinder and the telescopic end of the right centering oil cylinder is always the width of the steel belt.

[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, and the left position sensor is used to detect the telescopic stroke of the left centering cylinder; the second position sensor group includes at least one right position sensor, and the right position sensor is used to detect the telescopic stroke of the right centering cylinder.

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

[0011] Furthermore, the control system includes a data processing module, which is used to calculate the steel belt width and the front axle centerline angle based on the detection data of the detection module, and the front axle centerline angle is the angle between the center line of the steel belt when it is running and the center line; 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.

[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 belt or the surface features of the steel belt, and the surface features at least include the surface image of the steel belt; the control system simultaneously drives the first cylinder group and the second cylinder group according to the position of the steel belt, so that the steel belt runs at the position of the center line.

[0013] Furthermore, the control system includes an image processing module, which is used to judge the running state of the steel belt based on the surface features, and the running state of the steel belt at least includes 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 running state of the steel belt, so that the running state of the steel belt is the normal state.

[0014] Furthermore, the hydraulic drive systems of the left centering cylinder and the right centering cylinder are both provided with a proportional pressure valve and a proportional reversing valve, and the control system simultaneously drives the left centering cylinder and the right centering cylinder through the proportional pressure valve and the proportional reversing valve.

[0015] The left centering cylinder and the right centering cylinder are in a clamping state on the steel belt, and the two telescopic ends are respectively in contact with the two side ends of the steel belt to jointly maintain the running position of the steel belt so that the steel belt runs at the position of the center line.

[0016] Furthermore, the telescopic end is provided with a pushing member for contacting the side end of the steel belt, and the thickness of the pushing member in the direction perpendicular to the surface of the steel belt is much greater than the thickness of the steel belt; the pushing member is provided with a first component and a second component on the side facing the side end of the steel belt, and the first component and the second component are spaced apart from each other to form a pushing gap, the height of the pushing gap is greater than the thickness of the steel belt, and the length of the first component is smaller than the second component.

[0017] The beneficial effects of the present invention are: The present invention proposes a strip centering and balancing device, which determines the running position of the steel strip through a detection module, adjusts the running position of the steel strip through symmetrically arranged centering cylinders, so that the steel strip runs at the center line position, and automatically adjusts the centering of the steel strip in real time so that the steel strip can run smoothly on the center line.

[0018] During the production process of the steel strip, the centering and balancing device of the present application can detect the running position of the steel strip in real time and make timely adjustments, which can effectively ensure the consistency of product quality, make the product quality stable and controllable, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In the drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. It is clear that those skilled in the art can derive other drawings from these drawings without inventive effort.

[0020] Figure 1 This is a schematic diagram of a strip centering and balancing device according to an embodiment of the present invention; Figure 2 Schematic diagram of the alignment between the pusher and the steel belt; Figure 3 This is a structural diagram of a pusher; Figure 4 This is a schematic diagram of the layout of the hydraulic drive system of the centering cylinder; Figure 5 This is the principle block diagram of the control system for steel strip centering adjustment. DETAILED DESCRIPTION

[0021] To more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following describes specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. Those skilled in the art can derive other drawings and other embodiments based on these drawings without inventive effort. Furthermore, design orientations only represent relative positional relationships between components, not absolute positional relationships.

[0022] The embodiment of the present invention provides a strip centering and balancing device, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 It mainly includes a centering cylinder group symmetrically arranged on both sides of the preset center line of the steel belt operation 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 center line. The steel belt is located between the first cylinder group and the second cylinder group, and the telescopic end of the first cylinder group and the telescopic end of the second cylinder group are respectively in contact with the two side ends of the steel belt; 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 results of the detection module, so that the steel belt runs at the position of the center line.

[0023] 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, the first cylinder group and the second cylinder group are located on either side 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.

[0024] In a specific embodiment, the first cylinder group includes at least one left-centered cylinder, which is horizontally arranged on the left side of the center line; the second cylinder group includes at least one right-centered cylinder, which is horizontally arranged on the right side of the center line, and the left-centered cylinder and the right-centered cylinder are arranged opposite to each other, and the steel belt is located between the left-centered cylinder and the right-centered cylinder.

[0025] Each left centering cylinder is equipped with a right centering cylinder on the opposite side of the steel belt. The centering cylinders are arranged in pairs. The pushing effect of each pair of centering cylinders on the steel belt is symmetrical to avoid unnecessary damage to the steel belt when the centering cylinders push it.

[0026] See also Figure 1 Taking a left-centering cylinder and a right-centering cylinder as an example, the left-centering cylinder and the right-centering cylinder are in a left-right "clamping" state on the steel belt. The telescopic ends of the cylinders on both sides are respectively in contact with the two side ends of the steel belt, jointly maintaining the running position of the steel belt, so that the steel belt runs on the center line.

[0027] Taking the left centering cylinder as an example, its telescopic end can be provided with a pushing member for contacting the side end of the steel belt. The pushing member can be located directly in front of the telescopic end. The thickness of the pushing member in the direction perpendicular to the surface of the steel belt (vertical direction) is much greater than the thickness of the steel belt, which can make the alignment of the steel belt and the telescopic end more convenient and reduce the alignment accuracy requirements.

[0028] As a feasible embodiment, the pushing member can be a flat plate structure, such as Figure 2 As shown in , the feasible contact area between the telescopic end and the side end of the steel belt is effectively expanded; at this time, the centering cylinders on both sides can have a certain assembly error in height, which will not affect the centering of the steel belt. As another feasible embodiment, as Figure 3 As shown in the figure, a first component and a second component are provided on the side of the pushing member facing the side end of the steel belt, and the first component and the second component are spaced apart from each other to form a pushing gap. The height of the pushing gap is greater than the thickness of the steel belt, and the length of the first component is smaller than the second component. The two symmetrically arranged centering cylinders should be kept at the same height as much as possible so that the steel belt can run stably in the pushing gaps of the pushing members on both sides; wherein, the second component plays the role of supporting the steel belt, and the first component can limit the deformation and jumping of the steel belt and deviate from the existing operating range.

[0029] It can be understood that the distance between the left centering cylinder and the right centering cylinder is the sum of the width of the steel belt and the maximum telescopic stroke of the left centering cylinder or the right centering cylinder. When the telescopic stroke is limited, the adjustment range of the cylinder on the steel belt is larger, and the steel belt always maintains a stable "clamping" state with the cylinders on both sides; the steel belt is always affected by the push of the cylinders on both sides. When the stroke of the cylinder changes, the position of the steel belt changes, and the response is faster and more effective.

[0030] In this application, the two side ends of the steel belt are respectively abutted against the telescopic ends of the centering cylinders on both sides. On the basis of determining the telescopic stroke of the centering cylinder, the running position of the steel belt can be calculated according to the spacing between the centering cylinders on both sides and the width of the steel belt, and then it can be determined whether the steel belt is on the center line.

[0031] In a 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 telescopic stroke of the left centering cylinder; the second position sensor group includes at least one right position sensor, which is used to detect the telescopic stroke of the right centering cylinder.

[0032] For example, a left position sensor is provided corresponding to a left centering cylinder, and a right position sensor is provided corresponding to a right centering cylinder to detect the telescopic stroke of the centering cylinders on both sides of the steel belt, thereby calculating the running position of the steel belt.

[0033] In practice, the centerline can be preset at the exact center of two symmetrically positioned centering cylinders. Based on the cylinder's telescopic stroke and the belt's width, a direct comparison can be made to determine whether the belt's running position is on the centerline. Of course, the centerline can also deviate from the center, and comparison can be performed based on the distance from the centerline.

[0034] In specific implementation, multiple centering cylinders can be set on both sides of the steel belt, that is, multiple left centering cylinders and multiple right centering cylinders. The number of cylinders on the left and right sides is the same, and the corresponding number of position sensors can be set synchronously.

[0035] Exemplarily, the first position sensor group includes multiple left position sensors, the first cylinder group includes multiple left centering cylinders, and each left position sensor corresponds to a left centering cylinder; the second position sensor group includes multiple right position sensors, the second cylinder group includes multiple right centering cylinders, and each right position sensor corresponds to a right centering cylinder.

[0036] The detection data of the position sensors on both sides can better feedback the running posture of the steel belt. The running position of the steel belt can be calculated through the position detection data of multiple points. The deviation angle between the center line of the steel belt and the center line is calculated based on the running position of the steel belt, which is used as the basis for adjustment.

[0037] Feasibly, the control system may include a data processing module, which is used to calculate the steel belt width and the front axle centerline angle based on the detection data of the detection module, where the front axle centerline angle is the angle between the center line and the center line when the steel belt is running; the control system drives the first cylinder group and the second cylinder group simultaneously according to the front axle centerline angle, so that the front axle centerline angle is zero, that is, the center line of the steel belt itself overlaps with the center line, and the steel belt runs at the position of the center line.

[0038] Specifically, when the centerline angle of the front bridge is a left deviation, the first cylinder group / left centering cylinder is driven to increase the telescopic stroke, and the second cylinder group / right centering cylinder is driven to reduce the telescopic stroke. The increased stroke is the same as the reduced stroke, so that the steel belt is always under the influence of the centering cylinders on both sides.

[0039] During the operation of the steel belt, under ideal conditions, the distance between the telescopic end of the left centering cylinder and the telescopic end of the right centering cylinder is always the width of the steel belt. However, the possibility of adjustment deviation after long-term operation cannot be ruled out. At this time, the steel belt will be squeezed and deformed.

[0040] In this application, the surface of the steel belt is generally a smooth and flat structural surface, which is equivalent to a mirror surface when flattened. When the steel belt is slightly deformed, the surface will show halos, color changes, etc. These surface features can be directly observed; and the running position of the steel belt can also be determined by image recognition.

[0041] While acquiring the running image of the steel belt, the surface features of the steel belt can also be acquired synchronously. Based on these surface features, the structural changes of the steel belt itself can be reflected, such as whether it is squeezed and deformed, whether the telescopic end of the centering cylinder is too long, etc.

[0042] In a 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 at least include the surface image of the steel strip; the control system simultaneously drives the first cylinder group and the second cylinder group according to the position of the steel strip, so that the steel strip runs at the center line position.

[0043] Specifically, the image detection unit captures images of the steel strip in motion, automatically identifying and determining its position, and reporting this determination to the control system. Using the centering cylinders on either side as boundaries and the steel strip's width as the inner limit, the unit calculates the distance between the boundaries and the inner limit, comparing this distance with the distance between the centerline and the boundaries to determine whether the steel strip is operating at the centerline. The control system also determines surface characteristics.

[0044] Exemplarily, the control system includes an image processing module, which is used to judge the running state of the steel belt based on surface features, and the running state of the steel belt includes at least an extrusion state and a normal state when not extruded; the control system drives the first cylinder group and the second cylinder group at the same time according to the running state of the steel belt, so that the running state of the steel belt is normal.

[0045] It is understandable that the steel belt should not be in an extrusion state, regardless of whether it is the extrusion caused by the centering cylinder or the extrusion caused by the structural changes of the steel belt itself; when the steel belt has an extrusion area that exceeds the specification, it should be judged as an extrusion state. At this time, the extrusion risk caused by the centering cylinder should be eliminated first. If the extrusion deformation is not caused by the centering cylinder, the machine should be stopped for self-inspection to ensure that the structure of the steel belt itself meets the standards in the initial state.

[0046] In specific implementation, it can be assumed that the structure of the steel belt itself is stable and meets the standards, and the extrusion state is caused by the centering cylinder. Therefore, this problem can be solved by simply adjusting the telescopic stroke of the centering cylinder, so that the steel belt can operate normally under the push of the centering cylinder and will not be deformed by its extrusion.

[0047] Of course, the structure of the steel strip itself can be tested 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 reaching the centering and balancing device meet the production standards, that is, the structure of the steel strip itself is stable and meets the standards.

[0048] In the embodiments of the present application, the image detection unit can also be implemented in conjunction with the position sensor. The maximum value of the telescopic end spacing is limited by the position sensor, and the minimum value of the telescopic end spacing is limited by the surface features. Real-time adjustments are made during the operation of the steel belt to ensure that the steel belt runs smoothly at the center line position.

[0049] In an embodiment of the present application, a proportional pressure valve and a proportional reversing valve are provided in the hydraulic drive systems of the left centering cylinder and the right centering cylinder, and the control system simultaneously drives the left centering cylinder and the right centering cylinder through the proportional pressure valve and the proportional reversing valve.

[0050] See also Figure 4 The left and right centering cylinders can share a set of main working pipelines (T1, P1), which are divided into various hydraulic circuits (A, B) through proportional reversing valves. The proportional pressure valve can be installed on the P pipeline to control the centering pressure. A control pipeline and an oil drain pipeline can be installed at the proportional pressure valve. Figure 4 As shown in Figure 2, the proportional directional valve is used to control the speed and direction of the centering cylinder. Pressure sensors can also be installed on each hydraulic circuit, B1, and B2, to monitor cylinder pressure.

[0051] See also Figure 4 、 Figure 5 The pressure sensor together with the above-mentioned detection module can constitute the detection system of the centering balancing device, and the proportional pressure valve and the proportional reversing valve can constitute the execution system of the centering balancing device. The control system adjusts the parameters of the execution system according to the detection data of the detection system, so that the telescopic stroke of the centering cylinder changes and the running position of the steel belt is adjusted.

[0052] When the centering and balancing device of this application is used: During the strip centering process, the position sensor detects the centerline position of the steel plate in real time. When the strip is offset and is not on the center line, for example, the steel plate is deviating to the left, the control system sends a command to control the hydraulic system, and through the proportional pressure valve and proportional directional valve, reduces the pressure of the right cylinder, and at the same time reduces the cylinder flow, increases the pressure and flow of the left cylinder, causes the cylinder to offset to the right, pushes the strip to move to the right, and stops after it is at the center line. This process is continuously adjusted in real time to keep the strip in the center line position.

[0053] Sequential sensors are used to measure the strip width and the front axle centerline angle. The hydraulic drive system operates in a closed-loop control program. If the strip deviates from the centerline, the hydraulic pressure automatically pushes it back to the centerline according to the closed-loop control system, effectively supporting the pre-welding machine's forming capabilities.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0055] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention should not be considered to be limited to these descriptions. For those skilled in the art to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A strip centering balancing device, characterized in that: It includes a centering cylinder group symmetrically arranged on both sides of a preset center line of a steel belt running 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 center line, the steel belt is located between the first cylinder group and the second cylinder group, and the telescopic end of the first cylinder group and the telescopic end of the second cylinder group are respectively abutted against the two side ends of the steel belt; 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 steel belt runs at the position of the center line.

2. A strip 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 arranged on the left side of the center line; the second cylinder group includes at least one right centering cylinder, which is horizontally arranged on the right side of the center line, and the left centering cylinder and the right centering cylinder are arranged opposite to each other, and the steel belt is located between the left centering cylinder and the right centering cylinder.

3. A strip 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 belt and the maximum telescopic stroke of the left centering cylinder or the right centering cylinder.

4. A strip 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, and the left position sensor is used to detect the telescopic stroke of the left centering cylinder; the second position sensor group includes at least one right position sensor, and the right position sensor is used to detect the telescopic stroke of the right centering cylinder.

5. A strip centering and balancing device according to claim 4, characterized in that: The first position sensor group includes a plurality of left position sensors, the first cylinder group includes a plurality of left centering cylinders, and each of the left position sensors corresponds to one of the left centering cylinders; the second position sensor group includes a plurality of right position sensors, the second cylinder group includes a plurality of right centering cylinders, and each of the right position sensors corresponds to one of the right centering cylinders.

6. A strip 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 steel belt width and the front axle centerline angle based on the detection data of the detection module, and the front axle centerline angle is the angle between the midline of the steel belt when it is running and the centerline; the control system drives the first cylinder group and the second cylinder group simultaneously according to the front axle centerline angle, so that the front axle centerline angle is zero.

7. A strip centering and balancing device according to claim 2, characterized in that: 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 belt or the surface features of the steel belt, and the surface features at least include the surface image of the steel belt; the control system drives the first cylinder group and the second cylinder group simultaneously according to the position of the steel belt, so that the steel belt runs at the position of the center line.

8. The strip centering and balancing device according to claim 6, characterized in that: The control system includes an image processing module, which is used to judge the running state of the steel strip according to the surface features, and the running state of the steel strip at least includes an extrusion state and a normal state when not extruded; The control system drives the first oil cylinder group and the second oil cylinder group simultaneously according to the running state of the steel belt, so that the running state of the steel belt is the normal state.

9. The strip centering and balancing device according to claim 2, characterized in that: The hydraulic drive systems of the left centering cylinder and the right centering cylinder are both provided with a proportional pressure valve and a proportional reversing valve, and the control system simultaneously drives the left centering cylinder and the right centering cylinder through the proportional pressure valve and the proportional reversing valve.

10. The strip centering and balancing device according to claim 1, characterized in that: The telescopic end is provided with a pushing member for contacting the side end of the steel belt, and the thickness of the pushing member in the direction perpendicular to the surface of the steel belt is much greater than the thickness of the steel belt; the pushing member is provided with a first component and a second component on the side facing the side end of the steel belt, and the first component and the second component are spaced apart from each other to form a pushing gap, the height of the pushing gap is greater than the thickness of the steel belt, and the length of the first component is smaller than the second component.

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