Metal plate rolling equipment

Abstract

The invention relates to metal plate rolling equipment which comprises a left fixed roller and a right fixed roller which are symmetrically arranged, a multi-layer rolling structure is adopted, through the synergistic effect of the left fixed roller, the right fixed roller and a middle adjusting roller and in combination with an upper left roller, a lower left roller, an upper right roller and a lower right roller which are arranged up and down, precise step-by-step rolling on a metal plate is achieved, and the rolling precision of the metal plate is improved. Through the dynamic pressure and curvature adjusting system, the pressure distribution and the contact state between the upper roller and the lower roller can be adjusted in real time according to the material, the thickness and the process requirements of a to-be-machined plate through the upper adjusting roller, the lower adjusting roller, the matched upper adjusting mechanism and the matched lower adjusting mechanism, and the problem of insufficient rolling caused by overpressure fracture or underpressure is effectively solved; the left detection heating mechanism and the right detection heating mechanism integrate an electromagnetic ultrasonic nondestructive testing technology and an induction heating technology, so that nondestructive testing of internal defects of a plate can be achieved in the rolling process, and local or overall efficient heating can be conducted according to needs.

Description

Technical Field

[0001] The invention relates to metal sheet rolling equipment, in particular to a metal sheet rolling equipment applied in the technical field of metal sheet rolling. Background Art

[0002] The specification of Chinese invention patent CN115055518 discloses a composite metal plate rolling mill, including a mounting bracket, a roll assembly and a cooling system; the roll assembly includes a first roll group and a second roll group arranged on the mounting bracket, and a high-frequency vibrator is arranged inside the first roll group; the cooling system includes a cooling lubricating liquid chamber and a vibration guide rod, the cooling lubricating liquid chamber is fixed on the mounting bracket, a high-pressure air intake pipe is arranged on one side wall of the cooling lubricating liquid chamber, a cooling lubricating liquid outlet is arranged on the other side wall of the cooling lubricating liquid chamber, the vibration guide rod runs through the cooling lubricating liquid chamber, one end of the vibration guide rod is connected to the first roll group, the other end of the vibration guide rod is provided with a cooling lubricating liquid channel, and a plurality of liquid outlets communicating with the cooling lubricating liquid channel are arranged on the side wall of the vibration guide rod and at positions corresponding to the cooling lubricating liquid chamber. The present invention can effectively improve the bonding strength of the composite metal plate and effectively cool the rolls.

[0003] The specification of Chinese invention patent CN116078812 discloses a metal plate rolling equipment, which includes a housing, an upper pressing roller, a support plate, a lower pressing roller, and a motor. After the metal plate is thinned, the internal layered structure becomes more obvious, which greatly deteriorates the tensile performance of the steel along the thickness direction. In the present invention, the elliptical upper pressing roller and the lower pressing roller are designed. During the rolling process, the force generated by the extrusion of one of the pressing rollers and the metal plate will mainly give the metal plate a backward force relative to the movement of the metal plate, so that a part of the corresponding layer of the metal plate is squeezed and lagged behind the movement of the metal plate, while the force generated by the extrusion of the other pressing roller and the metal plate will mainly give the metal plate a force perpendicular to the center relative to the movement of the metal plate, so that a part of the corresponding layer of the metal plate moves toward the middle. Such a design can ensure that the upper and lower layers of the metal plate are re-positioned during the rolling process and reduce the layered structure.

[0004] The above design strengthens the bonding strength of the composite metal plate by introducing a high-frequency vibrator, and uses a unique cooling and lubrication system to effectively reduce the working temperature of the roller, and the elliptical roller structure optimizes the layered structure distribution during the rolling process of the metal plate, thereby improving the quality and production efficiency of the metal plate. However, there are still certain limitations, such as the failure to achieve effective detection and real-time control of internal defects of the plate, the inability to dynamically adjust the pressure and curvature according to the characteristics of the plate and processing requirements, and the lack of integrated non-destructive testing and induction heating functions. Summary of the invention

[0005] In view of the above-mentioned existing technologies, the technical problem to be solved by the present invention is how to achieve accurate detection and timely processing of internal defects of metal plates while ensuring the rolling quality of metal plates, and flexibly adjust the pressure distribution and curvature changes during the rolling process according to the material, thickness and process requirements of the plates, further integrate electromagnetic ultrasonic non-destructive testing technology and induction heating technology, improve the intelligence level and adaptability of equipment, so as to achieve the goal of more efficient, more precise and more energy-saving metal plate rolling.

[0006] In order to solve the above problems, the present invention provides a metal sheet rolling equipment, including a symmetrically arranged left fixed roller and a right fixed roller, a middle adjusting roller is arranged between the symmetrically arranged left fixed roller and the right fixed roller, a left upper roller and a left lower roller are arranged on the upper and lower sides of the left fixed roller, a right upper roller and a right lower roller are arranged on the upper and lower sides of the right fixed roller, an upper adjusting roller and a lower adjusting roller are arranged on the upper and lower sides of the middle adjusting roller, a left detection heating mechanism and a right detection heating mechanism are arranged between the left fixed roller and the middle adjusting roller, and between the right fixed roller and the middle adjusting roller, and the middle adjusting roller The two ends are rotatably connected with a middle adjustment mechanism, the two ends of the left fixed roller and the right fixed roller are rotatably connected with a bracket, the middle adjustment roller, the upper left roller, the lower left roller, the upper right roller and the lower right roller are all slidably connected with the bracket, the upper adjustment mechanism and the lower adjustment mechanism are rotatably connected at both ends of the upper and lower adjustment rollers, respectively, the left fixed roller, the right fixed roller, the middle adjustment roller and the upper left roller, the upper right roller, the upper adjustment roller, the lower left roller, the lower right roller and the lower adjustment roller are all contacted with the plates to be rolled, and the left detection heating mechanism and the right detection heating mechanism are electrically connected with the same controller.

[0007] In the above-mentioned metal sheet rolling equipment, multi-level precision rolling is realized, and electromagnetic ultrasonic detection and induction heating technology are introduced before and after the first and second rolling. The coil can not only perform non-destructive testing to identify internal defects of the plate, but also intelligently control the heating process of the plate to ensure that the material is in the optimal deformation state. The pressure distribution and plate curvature can be dynamically adjusted according to the test results, thereby realizing full-process quality monitoring and precise control. The entire work flow is designed as a continuous and efficient automation mode, ensuring strict control of the plate thickness, flatness, and internal quality from the first to the second rolling process, thereby improving product quality and production efficiency.

[0008] As a further improvement of the present application, both ends of the upper left roller and the upper right roller pass through the bracket, and the penetrating parts are rotatably connected to the same upper pressure frame, and the upper pressure frame is slidably connected to the bracket.

[0009] As a further improvement of the present application, both ends of the lower left roller and the lower right roller pass through the bracket, and the penetrating parts are rotatably connected to the same lower pressure frame, and the lower pressure frame is slidably connected to the bracket.

[0010] As a further improvement of the present application, an upper pressure hydraulic cylinder and a lower pressure hydraulic cylinder are respectively fixedly connected between the upper pressure frame and the bracket, and between the lower pressure frame and the bracket, and both the upper pressure hydraulic cylinder and the lower pressure hydraulic cylinder are connected to external equipment.

[0011] As another improvement of the present application, the left detection and heating mechanism and the right detection and heating mechanism both include a shell, and multiple coils are fixedly connected in the multiple shells. The multiple coils are stacked in sequence, both ends of the middle adjustment roller pass through the bracket, and the penetrating parts are rotatably connected to the lower adjustment mechanism, and the multiple coils are electrically connected to the controller.

[0012] As another improved supplement of the present application, both ends of the multiple shells are arc structures, and the arc structures are slidingly connected to the outer ends of the left fixed roller, the right fixed roller and the middle adjustment roller, and the multiple shells are fixedly connected to the middle adjustment mechanism.

[0013] As another improvement supplement to the present application, the upper adjusting mechanism and the lower adjusting mechanism are both double-acting hydraulic cylinders, and the upper adjusting mechanism and the lower adjusting mechanism are fixedly connected with slip rings at one end close to the upper adjusting roller and the lower adjusting roller, and the slip rings are rotatably connected to the upper adjusting roller and the lower adjusting roller respectively, and the upper adjusting mechanism and the lower adjusting mechanism are fixedly connected with one end close to the upper pressure frame and the lower pressure frame at one end away from the upper adjusting roller and the lower adjusting roller respectively.

[0014] As another improvement of the present application, the middle adjustment mechanism includes an adjustment ring rotatably connected to the middle adjustment roller, the outer end of the adjustment ring is fixedly connected to one end of the left detection and heating mechanism and the right detection and heating mechanism that are close to each other, the top and bottom ends of the adjustment ring are fixedly connected with adjustment hydraulic cylinders, the multiple adjustment hydraulic cylinders are all single-acting hydraulic cylinders, and the multiple adjustment hydraulic cylinders are fixedly connected to the bracket.

[0015] The steps include: S1, first rolling; The plate to be rolled first passes through the left fixed roller and the upper left roller and the left fixed roller and the lower left roller for the first rolling; S2, first electromagnetic ultrasonic testing; The plate processed by S1 is inspected using multiple coils on the left inspection and heating mechanism; S3, first electromagnetic induction heating; The plate processed by S1 is heated by multiple coils on the left detection and heating mechanism, and the coils are used to detect the plate condition in real time during the heating process; S4, curvature and pressure regulation; According to the conditions of S2 and S3, the pressure of the plate is adjusted by using the middle adjustment mechanism, the upper adjustment mechanism and the lower adjustment mechanism, and the change of pressure further adjusts the curvature of the plate; S5, secondary electromagnetic ultrasonic testing; The plate after S4 is inspected using multiple coils on the right inspection and heating mechanism; S6, secondary electromagnetic induction heating; Use multiple coils on the right detection and heating mechanism to heat the plate after S4, and use the coils to detect the plate condition in real time during the heating process; S7, secondary rolling; The plate is rolled twice by the right fixed roller and the right upper roller and the right fixed roller and the right lower roller.

[0016] In summary, this application has the following beneficial effects: 1. Multi-layer precision rolling technology: Through the multi-level and all-round rolling structure, it ensures the uniform thickness and high surface flatness of the metal sheet, and improves the rolling accuracy and product quality.

[0017] 2. Dynamic pressure and curvature adjustment system; using upper and lower adjustment rollers and upper and lower adjustment mechanisms, combined with hydraulic control technology, to achieve real-time and precise control of the pressure and contact curvature of plates of different materials and thicknesses, effectively preventing quality problems caused by overpressure or underpressure.

[0018] 3. Integrated detection and heating functions; the left detection and heating mechanism and the right detection and heating mechanism integrate electromagnetic ultrasonic non-destructive testing technology and induction heating technology, realizing simultaneous quality monitoring and temperature control during the rolling process, improving material plasticity, and improving production efficiency and continuous automation level.

[0019] 4. Flexible and adaptable equipment structure; the central adjustment mechanism can accurately adjust the position and angle of the central adjustment roller, and cooperate with the slidingly connected roller components to enable the equipment to adapt to the processing of plates of different specifications, enhancing flexibility and scope of application.

[0020] 5. Efficient hydraulic control system; the upper pressure hydraulic cylinder and the lower pressure hydraulic cylinder independently and accurately control the pressure of the upper roller, realizing automatic pressure control and improving the accuracy and efficiency of rolling various types of plates.

[0021] 6. Integrated multifunctional coil design; the coil acts as both an electromagnetic ultrasonic detection element and an induction heating component. While ensuring the detection accuracy, it can heat the plate locally or as a whole as needed to improve the processing quality.

[0022] 7. All-round and multi-dimensional fine-tuning capabilities; the upper and lower adjustment mechanisms are equipped with double-acting hydraulic cylinder functions, which can fine-tune the rollers in multiple directions to ensure high-precision control of plate thickness, curvature and other parameters.

[0023] 8. Comprehensive coordination and fine adjustment mechanism: The middle adjustment mechanism links the middle adjustment roller through the adjustment ring, and uses the single-acting hydraulic cylinder to perform fine adjustment of the position and rotation angle, so as to comprehensively and deeply intervene in the entire rolling process and improve the processing capacity and product stability under complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the overall structure diagram of this application; Figure 2 This is an overall exploded view of this application; Figure 3 Partial explosion for this application Figure 1 ; Figure 4 Partial explosion for this application Figure 2 ; Figure 5 Partial explosion for this application Figure 3 ; Figure 6 Partial explosion for this application Figure 4 ; Figure 7 This is a coil structure diagram of the present application; Figure 8 This is the front view of the application; Fig. 9 It is the AA cross-sectional view of this application; Fig.10 It is the BB cross-sectional view of this application; Fig.11 It is the CC section view of this application; Fig.12 It is the DD cross-sectional view of this application; Fig.13 The appearance structure of this application Figure 1 ; Fig.14 The appearance structure of this application Figure 2 .

[0025] Description of the numbers in the figure: 1. Left fixed roller; 2. Right fixed roller; 3. Middle adjusting roller; 4. Upper left roller; 5. Lower left roller; 6. Upper right roller; 7. Lower right roller; 8. Upper adjusting roller; 9. Lower adjusting roller; 10. Left detection and heating mechanism; 11. Right detection and heating mechanism; 12. Middle adjusting mechanism; 13. Bracket; 14. Upper adjusting mechanism; 15. Lower adjusting mechanism; 16. Upper pressure frame; 17. Lower pressure frame; 18. Upper pressure hydraulic cylinder; 19. Lower pressure hydraulic cylinder; 20. Shell; 21. Coil; 22. Adjusting ring; 23. Adjusting hydraulic cylinder. DETAILED DESCRIPTION

[0026] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0027] The first implementation method: Figure 1-12 The figure shows a metal sheet rolling equipment, comprising a symmetrically arranged left fixed roller 1 and a right fixed roller 2, a middle adjusting roller 3 is arranged between the symmetrically arranged left fixed roller 1 and the right fixed roller 2, a left upper roller 4 and a left lower roller 5 are arranged on the upper and lower sides of the left fixed roller 1, a right upper roller 6 and a right lower roller 7 are arranged on the upper and lower sides of the right fixed roller 2, an upper adjusting roller 8 and a lower adjusting roller 9 are arranged on the upper and lower sides of the middle adjusting roller 3, a left detection heating mechanism 10 and a right detection heating mechanism 11 are arranged between the left fixed roller 1 and the middle adjusting roller 3 and between the right fixed roller 2 and the middle adjusting roller 3, and a middle adjusting roller 3 is rotatably connected at both ends. Mechanism 12, both ends of the left fixed roller 1 and the right fixed roller 2 are rotatably connected with the bracket 13, the middle adjusting roller 3, the upper left roller 4, the lower left roller 5, the upper right roller 6 and the lower right roller 7 are all slidably connected with the bracket 13, the upper adjusting roller 8 and the lower adjusting roller 9 are rotatably connected with the upper adjusting mechanism 14 and the lower adjusting mechanism 15 at both ends respectively, the left fixed roller 1, the right fixed roller 2, the middle adjusting roller 3 and the upper left roller 4, the upper right roller 6, the upper adjusting roller 8 and the lower left roller 5, the lower right roller 7, the lower adjusting roller 9 are all contacted with the plates to be rolled, and the left detection heating mechanism 10 and the right detection heating mechanism 11 are electrically connected with the same controller.

[0028] In the above-mentioned metal sheet rolling equipment, multi-level precision rolling is realized, and electromagnetic ultrasonic detection and induction heating technology are introduced before and after the first and second rolling. The coil 21 can not only perform non-destructive testing to identify internal defects of the plate, but also intelligently control the heating process of the plate to ensure that the material is in the optimal deformation state. The pressure distribution and plate curvature can be dynamically adjusted according to the test results, thereby realizing full-process quality monitoring and precise control. The entire work process is designed as a continuous and efficient automation mode, ensuring strict control of the plate thickness, flatness, and internal quality from the first to the second rolling process, thereby improving product quality and production efficiency.

[0029] Multi-layer precision rolling, through the left fixed roller 1, the right fixed roller 2 and the middle adjusting roller 3, as well as the upper left roller 4, the lower left roller 5, the upper right roller 6, and the lower right roller 7 arranged up and down, realizes multi-level and all-round rolling of the metal plate, ensuring the uniform thickness and high surface flatness of the plate, and improving the rolling accuracy and product quality.

[0030] Dynamic pressure and curvature adjustment. The upper adjusting roller 8 and the lower adjusting roller 9 in the equipment cooperate with the upper adjusting mechanism 14 and the lower adjusting mechanism 15. They can adjust the pressure distribution and contact arc between the upper and lower rollers in real time according to the different materials, thicknesses and process requirements of the plates to be rolled, effectively preventing the plate from breaking due to overpressure or insufficient rolling caused by underpressure.

[0031] The integrated detection and heating system, the left detection and heating mechanism 10 and the right detection and heating mechanism 11 integrate electromagnetic ultrasonic detection and induction heating technology, which can realize non-destructive detection during the plate rolling process, and timely discover and locate internal defects; at the same time, the electromagnetic field generated by the left detection and heating mechanism 10 and the right detection and heating mechanism 11 can also efficiently heat the plate locally or as a whole, which helps to improve the plasticity of the material and improve the rolling efficiency. Both are managed by the same controller to realize simultaneous detection and processing, thereby improving the continuity and automation level of the production process.

[0032] Highly flexible and adaptable, the middle adjustment mechanism 12 can accurately control the position and angle change of the middle adjustment roller 3. Combined with the roller components slidably connected to the bracket 13, the entire equipment can adapt to the rolling requirements of plates of different specifications, thereby enhancing the flexibility and applicability of the equipment. It not only realizes precise control and efficient production in the metal plate rolling process, but also ensures product quality through integrated detection and heating functions, reduces production costs, and improves the overall technical advancement and market competitiveness of the equipment.

[0033] The second implementation method: Figure 1-14 As shown, both ends of the upper left roller 4 and the upper right roller 6 pass through the bracket 13 , and the passing parts are rotatably connected to the same upper pressure frame 16 , and the upper pressure frame 16 is slidably connected to the bracket 13 .

[0034] Both ends of the left lower roller 5 and the right lower roller 7 penetrate the bracket 13 , and the penetrated parts are rotatably connected to the same lower pressure frame 17 , and the lower pressure frame 17 is slidably connected to the bracket 13 .

[0035] An upper pressure hydraulic cylinder 18 and a lower pressure hydraulic cylinder 19 are fixedly connected between the upper pressure frame 16 and the bracket 13 and between the lower pressure frame 17 and the bracket 13, respectively. The upper pressure hydraulic cylinder 18 and the lower pressure hydraulic cylinder 19 are both connected to external equipment.

[0036] The left detection and heating mechanism 10 and the right detection and heating mechanism 11 both include a shell 20, and multiple coils 21 are fixedly connected in the multiple shells 20. The multiple coils 21 are stacked in sequence. Both ends of the middle adjustment roller 3 pass through the bracket 13, and the penetrating parts are rotatably connected to the lower adjustment mechanism 15. The multiple coils 21 are electrically connected to the controller.

[0037] Both ends of the multiple shells 20 are arc-shaped structures, and the arc-shaped structures are slidably connected to the outer ends of the left fixed roller 1, the right fixed roller 2 and the middle adjustment roller 3. The multiple shells 20 are fixedly connected to the middle adjustment mechanism 12.

[0038] The upper adjusting mechanism 14 and the lower adjusting mechanism 15 are both double-acting hydraulic cylinders. The upper adjusting mechanism 14 and the lower adjusting mechanism 15 are fixedly connected with slip rings at one end close to the upper adjusting roller 8 and the lower adjusting roller 9, and the slip rings are rotatably connected to the upper adjusting roller 8 and the lower adjusting roller 9 respectively. The upper adjusting mechanism 14 and the lower adjusting mechanism 15 are fixedly connected with one end close to the upper pressure frame 16 and the lower pressure frame 17 at one end away from the upper adjusting roller 8 and the lower adjusting roller 9 respectively.

[0039] The middle adjustment mechanism 12 includes an adjustment ring 22 rotatably connected to the middle adjustment roller 3. The outer end of the adjustment ring 22 is fixedly connected to one end of the left detection and heating mechanism 10 and the right detection and heating mechanism 11 that are close to each other. The top and bottom ends of the adjustment ring 22 are fixedly connected to adjustment hydraulic cylinders 23. The multiple adjustment hydraulic cylinders 23 are all single-acting hydraulic cylinders, and the multiple adjustment hydraulic cylinders 23 are all fixedly connected to the bracket 13.

[0040] Precise pressure adjustment and flexible support, the upper left roller 4 and the upper right roller 6 are slidably connected to the bracket 13 through the upper pressure frame 16, combined with the design of both ends passing through the bracket 13 and rotatably connected, so that the upper roller can achieve uniform pressure distribution during rolling, and the upper and lower clamping forces can be adjusted according to the requirements of plates of different thicknesses, ensuring flexibility and adaptability during the upper rolling process.

[0041] Efficient dynamic hydraulic control, the lower left roller 5 and the lower right roller 7 also adopt a sliding connection method, and are connected to external equipment through the lower pressure frame 17 and the upper pressure hydraulic cylinder 18 and the lower pressure hydraulic cylinder 19. It can not only independently and accurately adjust the pressure applied by the rollers to the plate, but also realize automatic pressure control, thereby improving the accuracy and efficiency of the equipment in rolling plates of different specifications.

[0042] The detection and heating functions are integrated. Multiple stacked coils 21 are installed inside the left detection and heating mechanism 10 and the right detection and heating mechanism 11. These coils 21 can be used as electromagnetic ultrasonic detection elements to monitor the quality of the plate in real time, and can also be used as induction heating components to provide local or overall heating for the plate as needed during the rolling process, thereby improving the processing quality and production efficiency.

[0043] Adaptive contact and stable structure, the arc structure at both ends of the shell 20 enables it to be slidably connected with the outer ends of the left fixed roller 1, the right fixed roller 2 and the middle adjusting roller 3, which enhances the stability of the equipment during the rolling process and ensures good contact between the detection and heating mechanism and the plate to be processed, which is beneficial to improving the detection accuracy and heating effect, and at the same time facilitates the cleaning of the outer ends of the left fixed roller 1, the right fixed roller 2 and the middle adjusting roller 3 through the shell 20.

[0044] All-round and multi-dimensional adjustment, the upper adjustment mechanism 14 and the lower adjustment mechanism 15 are both double-acting hydraulic cylinders, which are rotatably connected to the upper adjustment roller 8 and the lower adjustment roller 9 through slip rings, so that the entire equipment can fine-tune the rollers from multiple directions, ensuring high-precision control of parameters such as plate thickness and curvature during the rolling process.

[0045] Comprehensive coordination and fine adjustment, the middle adjustment mechanism 12 is linked with the middle adjustment roller 3 through the adjustment ring 22, and uses the single-acting adjustment hydraulic cylinder 23 to finely adjust the position and rotation angle of the middle adjustment roller, thereby realizing comprehensive and in-depth intervention in the entire rolling process, further enhancing the adaptability and flexibility of the equipment, helping to handle rolling tasks under complex working conditions, and improving product quality and production stability.

[0046] The third implementation method: Figure 1-14 Shown, comprising the following steps; S1, first rolling; The plate to be rolled first passes through the left fixed roller 1 and the upper left roller 4 and the left fixed roller 1 and the lower left roller 5 for the first rolling; S2, first electromagnetic ultrasonic testing; The plate processed by S1 is inspected by using the plurality of coils 21 on the left inspection and heating mechanism 10; S3, first electromagnetic induction heating; The plate processed by S1 is heated by using a plurality of coils 21 on the left detection and heating mechanism 10, and the coils 21 are used to detect the condition of the plate in real time during the heating process; S4, curvature and pressure regulation; According to the conditions of S2 and S3, the pressure of the plate is adjusted by the middle adjustment mechanism 12, the upper adjustment mechanism 14 and the lower adjustment mechanism 15, and the change of the pressure further adjusts the curvature of the plate; S5, secondary electromagnetic ultrasonic testing; Using the multiple coils 21 on the right detection and heating mechanism 11 to detect the plate after S4; S6, secondary electromagnetic induction heating; The plate after S4 is heated by using a plurality of coils 21 on the right detection and heating mechanism 11, and the coils 21 are used to detect the condition of the plate in real time during the heating process; S7, secondary rolling; The plate is rolled twice by passing through the right fixed roller 2 and the right upper roller 6 and the right fixed roller 2 and the right lower roller 7.

[0047] S1. In the first rolling stage, the metal sheet to be processed is first rolled through the gap between the left fixed roller 1 and the upper left roller 4 and the lower left roller 5. During this process, the rollers exert appropriate pressure on the sheet to cause plastic deformation when it passes through, thereby reducing the thickness and ensuring flatness. The rolling force is precisely controlled by the hydraulic system to adapt to sheets of different materials and thicknesses.

[0048] S2, the first electromagnetic ultrasonic testing stage, after the first rolling is completed, the plate is moved to the left detection heating mechanism 10, and the multiple coils 21 installed inside it generate a changing magnetic field when an alternating current of a specific frequency is passed through it. When the magnetic field acts on the surface of the metal plate, according to the principle of electromagnetic induction, eddy currents are induced in the plate. The mechanical vibrations generated by these eddy currents are ultrasonic waves. The coil 21 is used to receive the reflected ultrasonic signal. By analyzing the changes in the signal, it is possible to non-destructively detect whether there are defects such as cracks and inclusions inside the plate, and obtain the plate structure information. A magnetic field is generated. When current passes through the electromagnetic coil 21, based on the According to Faraday's law of electromagnetic induction, an alternating magnetic field will be formed in the space around it. When this magnetic field acts on the surface of conductive or magnetic materials, eddy currents will be induced. The interaction force between the eddy currents and the material, the Lorentz force, will cause mechanical vibrations in a tiny part of the material. These vibrations spread to form ultrasonic waves. Similarly, when ultrasonic waves are reflected back in the material and pass through the coil 21 area, they will also cause eddy current changes in the material, and then induce voltage signals in the coil 21. Through precise circuit design and signal processing, information about defects or material properties can be decoded from these electrical signals.

[0049] S3, the first electromagnetic induction heating stage, the coil 21 in the left detection heating mechanism 10 is also used. When high-frequency alternating current passes through the coil 21, skin effect and eddy current loss will be generated inside the plate, and electrical energy will be efficiently converted into thermal energy to heat the plate locally or as a whole. At the same time, since the coil 21 also has a detection function, the temperature distribution of the plate and the changes in material properties can be monitored in real time during the heating process, so as to adjust the heating parameters in time.

[0050] S4, the stage of intelligent adjustment of curvature and pressure. According to the plate quality and temperature data obtained in S2 and S3, the control system changes the position of the middle adjustment roller 3 by operating the middle adjustment mechanism 12, and drives the upper adjustment mechanism 14 and the lower adjustment mechanism 15 by the upper pressure hydraulic cylinder 18 and the lower pressure hydraulic cylinder 19 to fine-tune the pressure of the roller on the plate. The dynamic adjustment process enables the plate to maintain the ideal curvature and straightness during the subsequent rolling process, avoiding problems such as warping due to uneven stress.

[0051] S5, the second electromagnetic ultrasonic testing stage, after the above adjustment, the plate enters the right detection heating mechanism 11 area and undergoes electromagnetic ultrasonic testing again. This step is used to confirm the effect of the first pressure and curvature adjustment and further detect other possible minor defects.

[0052] S6, the secondary electromagnetic induction heating stage, similar to the process of S3, the coil 21 in the right detection and heating mechanism 11 performs a second induction heating on the plate to ensure that the plate reaches the required temperature state before entering the final rolling process, and at the same time monitors the performance changes of the plate online to ensure the smooth implementation of subsequent processes.

[0053] S7, secondary fine rolling stage. Finally, when the plate is subjected to the second precision rolling by the right fixed roller 2 in cooperation with the upper right roller 6 and the lower right roller 7, due to the various quality controls and parameter optimizations in the early stages, more precise size control and surface quality improvement can be achieved, completing the entire high-quality metal plate rolling process.

[0054] Step-by-step precise rolling is achieved through the cooperation of the left fixed roller 1 with the upper left roller 4 and the lower left roller 5, as well as the right fixed roller 2 with the upper right roller 6 and the lower right roller 7, to achieve step-by-step refined rolling of the metal sheet, effectively control the thickness and shape of the sheet, and improve the dimensional accuracy and flatness of the product.

[0055] Nondestructive testing and defect identification, in the first and second electromagnetic ultrasonic testing stages, the electromagnetic field generated by the coil 21 is used to excite and receive ultrasonic signals, so that tiny cracks, inclusions and other defects inside the plate can be detected in real time and nondestructively, ensuring product quality and reducing scrap rate.

[0056] Intelligent induction heating technology introduces an electromagnetic induction heating link between the first and second rolling, which can quickly and evenly heat the plate to the appropriate temperature according to process requirements. At the same time, combined with the detection function of coil 21, real-time monitoring of temperature and performance parameters during the heating process can be achieved to ensure the optimal plastic deformation state of the material.

[0057] Dynamic pressure and curvature adjustment: According to the test results, the middle adjustment mechanism 12, the upper adjustment mechanism 14 and the lower adjustment mechanism 15 are flexibly adjusted, so that the equipment can automatically optimize the pressure distribution and the curvature of the plate according to the specific characteristics of the plate to be processed, such as thickness and material, to reduce product quality problems caused by uneven stress.

[0058] Efficient continuous production process, the entire work flow is designed as a continuous operation mode, from the first to the second rolling, and then to the intermediate quality inspection and control links, forming a complete and efficient automated production process, which improves production efficiency and reduces the cost and error risk of manual intervention.

[0059] Comprehensive quality control, through strict control of each step and interrelated design, the equipment can not only ensure that the final product meets high standards in thickness, flatness, internal quality, etc., but also can quickly adapt and optimize for different batches or types of products to meet diversified market needs.

[0060] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A metal sheet rolling equipment, characterized in that: The invention comprises a symmetrically arranged left fixed roller (1) and a right fixed roller (2), wherein a middle adjusting roller (3) is arranged between the symmetrically arranged left fixed roller (1) and the right fixed roller (2), wherein an upper left roller (4) and a lower left roller (5) are arranged on the upper and lower sides of the left fixed roller (1), respectively, an upper right roller (6) and a lower right roller (7) are arranged on the upper and lower sides of the right fixed roller (2), respectively, an upper adjusting roller (8) and a lower adjusting roller (9) are arranged on the upper and lower sides of the middle adjusting roller (3), a left detection heating mechanism (10) and a right detection heating mechanism (11) are arranged between the left fixed roller (1) and the middle adjusting roller (3) and between the right fixed roller (2) and the middle adjusting roller (3), respectively, and the middle adjusting roller (3) is rotatably connected with a middle adjusting mechanism (12) at both ends, and the left Both ends of the fixed roller (1) and the right fixed roller (2) are rotatably connected to a bracket (13); the middle adjustment roller (3), the upper left roller (4), the lower left roller (5), the upper right roller (6) and the lower right roller (7) are slidably connected to the bracket (13); both ends of the upper adjustment roller (8) and the lower adjustment roller (9) are rotatably connected to an upper adjustment mechanism (14) and a lower adjustment mechanism (15); plates to be rolled are contacted and arranged between the left fixed roller (1), the right fixed roller (2), the middle adjustment roller (3) and the upper left roller (4), the upper right roller (6), the upper adjustment roller (8) and the lower left roller (5), the lower right roller (7) and the lower adjustment roller (9); and the left detection heating mechanism (10) and the right detection heating mechanism (11) are electrically connected to the same controller.

2. The metal sheet rolling equipment according to claim 1, characterized in that: Both ends of the upper left roller (4) and the upper right roller (6) pass through the bracket (13), and the passing parts are rotatably connected to the same upper pressure frame (16), and the upper pressure frame (16) is slidably connected to the bracket (13).

3. The metal sheet rolling equipment according to claim 1, characterized in that: Both ends of the left lower roller (5) and the right lower roller (7) pass through the bracket (13), and the passing parts are rotatably connected to the same lower pressure frame (17), and the lower pressure frame (17) is slidably connected to the bracket (13).

4. The metal sheet rolling equipment according to claim 2, characterized in that: An upper pressure hydraulic cylinder (18) and a lower pressure hydraulic cylinder (19) are respectively fixedly connected between the upper pressure frame (16) and the bracket (13) and between the lower pressure frame (17) and the bracket (13), and the upper pressure hydraulic cylinder (18) and the lower pressure hydraulic cylinder (19) are both connected to external equipment.

5. The metal sheet rolling equipment according to claim 1, characterized in that: The left detection and heating mechanism (10) and the right detection and heating mechanism (11) both comprise a shell (20), a plurality of coils (21) are fixedly connected inside the plurality of shells (20), the plurality of coils (21) are stacked in sequence, both ends of the middle adjustment roller (3) pass through the bracket (13), and the passing portions are rotatably connected to the lower adjustment mechanism (15), and the plurality of coils (21) are electrically connected to a controller.

6. The metal sheet rolling equipment according to claim 5, characterized in that: Both ends of the multiple shells (20) are arc-shaped structures, and the arc-shaped structures are slidably connected to the outer ends of the left fixed roller (1), the right fixed roller (2) and the middle adjustment roller (3), and the multiple shells (20) are fixedly connected to the middle adjustment mechanism (12).

7. The metal sheet rolling equipment according to claim 3, characterized in that: The upper adjustment mechanism (14) and the lower adjustment mechanism (15) are both double-acting hydraulic cylinders. The ends of the upper adjustment mechanism (14) and the lower adjustment mechanism (15) close to the upper adjustment roller (8) and the lower adjustment roller (9) are fixedly connected to slip rings, and the slip rings are rotationally connected to the upper adjustment roller (8) and the lower adjustment roller (9) respectively. The ends of the upper adjustment mechanism (14) and the lower adjustment mechanism (15) away from the upper adjustment roller (8) and the lower adjustment roller (9) are fixedly connected to the ends of the upper pressure frame (16) and the lower pressure frame (17) close to each other.

8. The metal sheet rolling equipment according to claim 1, characterized in that: The middle adjustment mechanism (12) comprises an adjustment ring (22) rotatably connected to the middle adjustment roller (3); the outer end of the adjustment ring (22) is fixedly connected to one end of the left detection and heating mechanism (10) and the right detection and heating mechanism (11) that are close to each other; the top and bottom ends of the adjustment ring (22) are fixedly connected to adjustment hydraulic cylinders (23); the plurality of adjustment hydraulic cylinders (23) are all single-acting hydraulic cylinders, and the plurality of adjustment hydraulic cylinders (23) are fixedly connected to the bracket (13).

9. A metal sheet rolling equipment according to any one of claims 1 to 8, characterized in that: The steps include: S1, first rolling; The plate to be rolled first passes through the left fixed roller (1) and the upper left roller (4) and the left fixed roller (1) and the lower left roller (5) for the first rolling; S2, first electromagnetic ultrasonic testing; Using a plurality of coils (21) on the left detection and heating mechanism (10) to detect the plate processed by S1; S3, first electromagnetic induction heating; The plate processed by S1 is heated by using a plurality of coils (21) on the left detection and heating mechanism (10), and the coils (21) are used to detect the condition of the plate in real time during the heating process; S4, curvature and pressure regulation; According to the conditions of S2 and S3, the pressure of the plate is adjusted by using the middle adjustment mechanism (12), the upper adjustment mechanism (14) and the lower adjustment mechanism (15), and the change in pressure further adjusts the curvature of the plate; S5, secondary electromagnetic ultrasonic testing; Using a plurality of coils (12) on the right detection and heating mechanism (11) to detect the plate after S4; S6, secondary electromagnetic induction heating; The plate after S4 is heated by using a plurality of coils (12) on the right detection and heating mechanism (11), and the coils (21) are used to detect the condition of the plate in real time during the heating process; S7, secondary rolling; The plate is rolled twice by passing through the right fixed roller (2) and the right upper roller (6) and the right fixed roller (2) and the right lower roller (7).

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