A reversible rolling mill roll changing structure based on dynamic adaptation to rolling tasks

Abstract

This utility model discloses a reversible rolling mill roll changing structure based on dynamic adaptation to rolling tasks, relating to the field of rolling equipment technology. The structure includes a support assembly, a roll changing mechanism, a positioning mechanism, a locking element, and a guide rail. By introducing a task identification module and an annealing temperature control unit into the roll changing structure, coupled with a highly efficient rolling guide system, it achieves rapid positioning and stable switching of roll changing operations, improving roll changing accuracy and efficiency, reducing product surface defect rates, and simultaneously considering energy consumption and time management, effectively improving the timeliness of order delivery and customer satisfaction.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, and in particular to a reversible rolling mill roll changing structure based on dynamic adaptation to rolling tasks. Background Technology

[0002] With the continued growth in market demand for precision strip steel products, production scheduling and roll changing strategies for reversible rolling mills have become crucial for companies to optimize efficiency and ensure delivery. Traditional roll changing structures often suffer from problems such as fixed roll changing cycles, low precision of manual adjustments, slow response to annealing temperature control, and the need for manual readjustment after roll replacement, which seriously affects the on-time delivery rate of orders.

[0003] Furthermore, roll changing intervals have a significant impact on the surface quality of the steel strip. Failure to rationally schedule roll changing frequencies according to task variations can easily lead to excessive roll wear or uncontrolled rolling stress, resulting in product defects. Simultaneously, there is currently a lack of a technical system that integrates annealing temperature switching strategies with roll changing procedures, hindering the effective integration of task rhythm with precise energy management.

[0004] Especially with the increasing prevalence of time-of-use electricity pricing policies, rationally arranging roll changing times in conjunction with energy consumption has become a crucial means of reducing production costs and improving energy efficiency. Therefore, there is an urgent need for a roll changing structure that can combine dynamic task parameters, annealing temperature control requirements, and energy consumption optimization goals to achieve coordinated control of efficient roll changing and quality assurance. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a reversible mill roll changing structure based on dynamic adaptation to rolling tasks. By introducing a task identification module, annealing temperature control strategy, and intelligent roll changing control, it achieves automation, high precision, and high adaptability in roll changing operations.

[0006] This structure achieves smooth movement of the rolls through guide rails, precise control of the roll position through programmable positioners, and automated fixing through electric locking components. Combined with an annealing temperature control database, it adjusts the temperature range during roll changes, thereby achieving multiple optimizations in processing efficiency, energy consumption control, and product quality.

[0007] This structure can significantly improve roll changing efficiency, reduce manual intervention, improve the surface quality of steel strip, enhance the ability to deliver orders on time, and at the same time, allow for reasonable production scheduling in line with peak and off-peak electricity pricing policies, thereby improving the company's economic benefits. Attached Figure Description

[0008] Figure 1 This is a three-dimensional view of the roller changing structure of this utility model;

[0009] Figure 2 A schematic diagram of the guide rail structure for the roller changing structure;

[0010] Figure 3 This is a structural cross-sectional view of the positioning mechanism;

[0011] Figure 4 A schematic diagram showing the connection structure between the annealing temperature control module and the task identification module;

[0012] Figure 5 This is a schematic diagram showing the switching of the working state of the locking component.

[0013] Figure 6 This is a flowchart illustrating the information interaction between the task identification module and the production scheduling control system.

[0014] Figure 7 This is an enlarged view of the structure of the buffer pad;

[0015] Figure 8 This is an enlarged view of the structure of the limiting component.

[0016] [Attached image labels]

[0017] 1. Frame; 2. Guide rail; 3. Roll assembly; 4. Support assembly; 5. Lifting module; 6. Rotary bearing; 7. Positioning mechanism; 8. Sensor feedback unit; 9. Programmable positioner; 10. Locking element; 11. Electric telescopic pin; 12. Task identification module; 13. Central production scheduling control system; 14. Annealing temperature control unit; 15. Temperature strategy database; 16. Buffer pad; 17. Limiting element. Detailed Implementation

[0018] Implementation method one: such as Figure 1 As shown, a reversible mill roll changing structure based on dynamic adaptation to rolling tasks includes a frame 1, a guide rail 2, a roll assembly 3, and a support assembly 4. The guide rail 2 is mounted on the frame 1, and the roll assembly 3 moves along it in the horizontal direction; the support assembly 4 includes a lifting module 5 and a rotary bearing 6, which are used for adjusting the height of the rolls and for loading and unloading rotation operations, enhancing the convenience of loading and unloading.

[0019] Implementation Method Two: (e.g.) Figure 2 and Figure 3As shown, the guide rail 2 adopts a dual-rail parallel structure and is equipped with a positioning mechanism 7. The positioning mechanism 7 includes a programmable positioner 9 and a sensor feedback unit 8. The sensor feedback unit 8 can provide real-time feedback on the current position of the roll to the positioner, controlling the roll to stop at the target position, thus improving roll changing accuracy and repeatability. To achieve synchronous leveling of the dual rails, a linkage gear assembly is provided on both sides of the guide rail 2. This assembly includes a synchronous gear, a linkage shaft, and a leveling bracket. The linkage shaft runs horizontally through both sides of the frame and is connected to the racks of the two rail supports through the synchronous gear. When one side of the rail shifts due to the force of the roll, the linkage shaft will drive the other side to adjust synchronously, thus maintaining the parallelism of the rails. In addition, a miniature hydraulic cylinder is provided at the bottom of the rail. The automatic hydraulic control module adjusts the height difference between the two rails in real time based on sensor data to ensure the coaxiality and stability of the roll during movement. The programmable positioner 9 contains an embedded control chip, a position signal processing unit, and an execution output interface. Its working principle is as follows: The sensing feedback unit 8 transmits the detected real-time position data to the control chip in the form of digital signals. The control chip has multiple preset position logic segments and threshold ranges, and automatically compares whether the current roll position information is within the target window. When the predetermined position is reached, the control chip outputs a control signal to the execution interface, driving the positioning mechanism to complete the locking action. The positioning program can be uploaded and set through an external industrial control system, supporting batch calling of multi-task position information and real-time display of task status, improving the automation of roll changing and the flexibility of the process.

[0020] Implementation Method 3: For example Figure 4As shown, the task identification module 12 is located in the roll changing system control center and is communicatively connected to the central production scheduling control system 13. The task identification module 12 internally includes a processing unit, a task data interface, and a parameter cache module. The processing unit parses task parameters received from the central production scheduling control system 13, such as strip thickness, width, product number, and target surface quality grade. The parameter cache module temporarily stores the data and, combined with historical roll changing data, models the optimal roll changing cycle and strategy. Internally, the module transmits control commands bidirectionally to the temperature control unit 14 via the CAN bus protocol, ensuring that the annealing temperature adjustment is synchronized with the preset time window before roll changing starts, achieving closed-loop collaborative control of temperature control and roll changing. The task identification module 12 can obtain information such as the product type, thickness, and annealing requirements of the current production task, and calls the temperature strategy database 15 corresponding to the annealing temperature control unit 14 to dynamically adjust the annealing zone temperature, preventing energy waste caused by temperature jumps. The temperature strategy database 15 includes a task category index module, a temperature zone mapping table, and a historical temperature control model dataset. The task category index module matches the received task parameters (such as material type, strip thickness, and expected rolling rate) with the preset temperature control model in the database. The temperature zone mapping table records the target temperature range, temperature rise rate, and holding time corresponding to different task types and annealing furnace sections. Based on the parameters input from the task identification module 12, the system retrieves the best match in the temperature zone mapping table, generates control commands, and sends them to the annealing temperature control unit 14 to independently adjust each heating section. This process is completed in real time through an edge computing chip, realizing dynamic deployment of temperature control strategies and energy consumption optimization. In addition, to improve system scalability and data fault tolerance, the task identification module can also be equipped with a redundant communication interface and a local write-back cache module, used to temporarily store task parameters or control strategies when communication is interrupted, and automatically synchronize them to the central production scheduling control system after communication is restored. This structure can support future remote scheduling system access or historical task data retrospective analysis, enhancing system flexibility and data security.

[0021] Implementation Method Four: (e.g.) Figure 5 As shown, the locking component 10 is an electric telescopic pin structure 11, which is automatically inserted and locked after the roller change is completed by the control system, and automatically unlocked and retracted during unloading, thereby improving the degree of automation and reducing the risk of misoperation.

[0022] Implementation method 5: A buffer pad 16 is set between the roll assembly 3 and the guide rail 2 to effectively absorb the sliding impact force and reduce vibration transmission; at the same time, a limiting part 17 is added to the end of the guide rail 2 to prevent the roll from sliding out of the guide rail track and ensure the safety and stability of the roll changing operation.

[0023] Implementation Method Six: To further improve the stability and temperature distribution uniformity of the roll assembly during the annealing temperature control process, optionally, a limiting guide structure and a uniform speed drive mechanism can be set in the annealing area of ​​the guide rail. The limiting guide structure may include auxiliary limiting wheel sets, roller guide frames, or other lateral limiting mechanisms set on both sides of the guide rail, used to limit the lateral offset and running posture fluctuation of the roll assembly, thereby maintaining the stable trajectory of the roll when passing through the annealing section.

[0024] The uniform speed drive mechanism can be installed at one or both ends of the guide rail. Its structure may include a rolling drive motor, a transmission coupling, and a connecting device. It is used to drive the roll assembly through the annealing zone at a preset constant speed, ensuring uniform heating time and heat input in each heating section. To further improve speed control accuracy, this mechanism can be combined with signal linkage between the encoder feedback system and the task recognition module to achieve closed-loop speed adjustment and thermal control strategy linkage. Through this structure, uniform speed control and attitude stability control of the annealing section can be achieved without manual intervention, effectively improving the consistency of the annealing process and the stability of product quality.

[0025] Implementation Method Seven: The roll changing structure described in this utility model is applicable to various strip rolling equipment, including reversible rolling mills. It offers significant advantages for precise control and rapid replacement of roll assemblies, particularly during the repeated reversing rolling processes of reversible rolling mills. Because reversible rolling mills exhibit reciprocating motion characteristics in different rolling cycles, the roll changing rhythm needs to be highly coordinated with the annealing cycle, electricity pricing strategies, and product variety switching. Therefore, the task identification module and annealing temperature control strategy linkage unit in this structure enable coordinated optimization of roll changing and temperature control. The guide rails, positioning mechanisms, and locking components in the roll changing structure possess good structural versatility, allowing for rapid deployment and efficient operation without additional modifications to the main body of the reversible rolling mill.

[0026] This utility model has a reasonable structure and is easy to operate. It is particularly suitable for high-frequency, multi-task switching precision strip rolling production environments, which can improve quality control and energy efficiency, and achieve the dual goals of enterprises in ensuring customer satisfaction while controlling production costs.

Claims

1. A reversible rolling mill roll changing structure based on dynamic adaptation to rolling tasks, characterized in that, include: The frame (1), the support assembly (4) mounted on the frame (1), the guide rail (2) and the roll assembly (3); The guide rail (2) is used to guide the roll assembly (3) to slide in the horizontal direction; The support component (4) is used to support and adjust the height and posture of the roll assembly (3); The guide rail (2) is provided with a positioning mechanism (7), a locking element (10) and a task identification module (12); the positioning mechanism (7) includes a sensing feedback unit (8) and a programmable positioner (9) for monitoring and controlling the position of the roll assembly (3); The locking component (10) is an electric telescopic pin (11) used to automatically lock and unlock the roll assembly (3); the task identification module (12) is electrically connected to the annealing temperature control unit (14), and the annealing temperature control unit (14) is equipped with a temperature strategy database (15) to adjust the annealing temperature according to the task parameters, so as to realize the dynamic linkage control of the roll changing rhythm and the annealing temperature control.

2. The roller changing structure according to claim 1, characterized in that: The support assembly (4) includes a lifting module (5) and a rotary bearing (6). The lifting module (5) is used to adjust the height of the roll assembly (3), and the rotary bearing (6) is used to assist in the rotation operation during roll loading and unloading.

3. The roller changing structure according to claim 1, characterized in that: The guide rail (2) is a parallel structure with a dual-rail synchronous leveling function to ensure the stability and coaxiality of the roll assembly (3) during movement.

4. The roller changing structure according to claim 1, characterized in that: The programmable positioner (9) in the positioning mechanism (7) receives the position signal output by the sensing feedback unit (8) and compares it with the target position information to perform positioning control.

5. The roller changing structure according to claim 1, characterized in that: The locking component (10) cooperates with the control actuator via an electric telescopic pin (11) to realize the automatic locking and unlocking operation of the roll assembly (3).

6. The roller changing structure according to claim 1, characterized in that: The task identification module (12) communicates with the central production scheduling control system (13) via industrial Ethernet or CAN bus, and outputs control parameters to the positioning mechanism (7) and the annealing temperature control unit (14).

7. The roller changing structure according to claim 1, characterized in that: The annealing temperature control unit (14) is equipped with a temperature strategy database (15) that dynamically matches the corresponding annealing section temperature based on the task characteristics.

8. The roller changing structure according to claim 1, characterized in that: A buffer pad (16) is provided between the roll assembly (3) and the guide rail (2) to absorb impact force and reduce vibration transmission.

9. The roller changing structure according to claim 1, characterized in that: A limiting member (17) is provided between the guide rail (2) and the positioning mechanism (7) to prevent the roll assembly (3) from sliding out of the track range and to ensure the safety of roll changing.

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