Steel sheet hot compounding production system based on dynamic control

Abstract

The application provides a steel plate hot compounding production system based on dynamic control, which comprises a steel plate feeding device and a hot compounding device, the steel plate feeding device controls the feeding speed of the steel plate by a first driving motor, the hot compounding device comprises an upper film laminating device and a lower film laminating device, the upper film laminating device and the lower film laminating device both comprise a film laminating roller and a cooling device, the film laminating rollers at the upper and lower positions are synchronously controlled in rotating speed by a second driving motor, and the cooling device is attached to the half circle of the film laminating roller which is away from the steel plate; the application further comprises a plurality of groups of temperature sensors and light-controlled switches which are uniformly arranged on the roller surface of the film laminating roller along the circumferential direction of the film laminating roller, and each group of the temperature sensors and the light-controlled switches alternately enters and exits the attaching area of the cooling device in the rotating period of the film laminating roller.

Description

Technical Field

[0001] This invention relates to the field of centralized control technology for factory production, and in particular to a steel plate hot composite production system based on dynamic control. Background Technology

[0002] After being coated with a polymer film, steel plates can exhibit advantages such as improved durability and enhanced corrosion resistance. The principle of steel plate coating technology is very simple: first, the steel plate is heated to 200–300°C, and then a pre-made room-temperature polymer film with a thickness of 10–40 μm is thermally bonded to the steel plate surface using a roller pressing method. However, this thermal bonding process requires strict temperature control precision; otherwise, the quality of the coated steel plate cannot be guaranteed.

[0003] Traditional thermal bonding principles, such as Figure 1 As shown, the upper and lower polymer films (2) are thermally bonded to the upper and lower surfaces of a high-temperature steel plate (3) by the upper and lower coating rollers (1) respectively. During the contact between the steel plate (3) and the polymer film (2), the inner side of the film heats up rapidly and reaches its maximum temperature. Then, as heat conduction proceeds, the heat is conducted from the inner side of the film to the outer side. Each unit on the cross-section of the film (assuming it is divided into several units in the thickness direction) heats up sequentially until the outer side of the film reaches its maximum temperature. The entire process takes only about 0.05 seconds. Subsequently, the heat transmitted from the upper and lower polymer films (2) is absorbed by the rubber layer of the coating roller (1). As the coating continues, the surface temperature of the coating roller (1) increases, affecting the subsequent heat conduction effect, which can easily lead to defects such as film wrinkling, film breakage, and peeling.

[0004] Traditional thermal lamination processes fail to precisely control the temperature of the rubber layer on the laminating roller during production. Instead, they typically increase the initial temperature of the laminating roller by raising the temperature field, thereby reducing the temperature difference that occurs on the roller surface as lamination continues. This helps alleviate defects such as film wrinkling, breakage, and peeling to some extent.

[0005] However, even increasing the initial temperature of the coating roller cannot change the fact that a temperature difference will occur on the surface of the coating roller as coating continues. Secondly, increasing the initial temperature of the coating roller will, to some extent, affect the thermal conductivity of the polymer film and the rubber layer of the coating roller. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problems by providing a steel plate thermal composite production system based on dynamic control.

[0007] The technical solution of this invention is a steel plate thermal lamination production system based on dynamic control, including a steel plate feeding device and a thermal lamination device. The steel plate feeding device is controlled by a first drive motor to control the feeding speed of the steel plate. The thermal lamination device includes an upper lamination device and a lower lamination device. Both the upper and lower lamination devices include a lamination roller and a cooling device. The rotation speed of the upper and lower lamination rollers is synchronously controlled by a second drive motor. The cooling device is attached to the half-circumference of the lamination roller facing away from the steel plate. The system also includes multiple sets of temperature sensors and light-controlled switches evenly arranged along the circumference of the lamination roller on the roller surface. Each set of temperature sensors and light-controlled switches alternately enters and exits the contact area of ​​the cooling device during the rotation cycle of the lamination roller.

[0008] It also includes a dynamic control method configured on the first drive motor and the second drive motor, the dynamic control method including

[0009] The temperature value measured by the temperature sensor corresponding to the first light-controlled switch exiting the bonding area of ​​the coating roller rotating at the initial speed is obtained and set as the initial temperature value, and the current phase angle of the coating roller is set as the initial phase angle.

[0010] The highest temperature value measured by the temperature sensor as the coating roller rotates is obtained, and the phase angle of the coating roller when the temperature sensor reaches the highest temperature value is set as the high temperature phase angle.

[0011] Based on the initial phase angle, the high temperature phase angle, and the heat dissipation phase angle corresponding to the bonding area, the pre-heat dissipation phase angle corresponding to the temperature sensor from the position of the highest temperature value to the position of entering the bonding area is obtained. Based on the pre-heat dissipation parameters and heat dissipation parameters retrieved from the database and the obtained pre-heat dissipation phase angle and heat dissipation phase angle, the first driving speed of the first drive motor and the second drive motor is given.

[0012] Repeat the acquisition of the temperature value measured by the temperature sensor corresponding to the bonding area where the light-controlled switch exits the bonding area again, and set it as the intermediate temperature value;

[0013] Based on the comparison between the current intermediate temperature value and the initial temperature value, the second driving speed of the first drive motor and the second drive motor is given in real time.

[0014] In one embodiment, the coating roller includes a steel roller and a rubber layer disposed outside the steel roller.

[0015] In one embodiment, a plurality of mounting grooves are provided on the rubber layer, and the temperature sensor and the light control switch are embedded in the mounting grooves, forming the circumferential surface of the coating roller together with the surface of the rubber layer.

[0016] In one implementation, the first driving speed includes a first driving speed of a first motor corresponding to the first driving motor and a first driving speed of a second motor corresponding to the second driving motor, wherein the first driving speed of the first motor and the first driving speed of the second motor are positively correlated.

[0017] In one implementation, the second driving speed includes a first motor second driving speed corresponding to the first driving motor and a second motor second driving speed corresponding to the second driving motor, wherein the first motor second driving speed and the second motor second driving speed are positively correlated.

[0018] In one implementation, the temperature sensors and the light control switch are configured as six groups. The high-temperature phase angle is calibrated as the first phase angle, and the remaining second, third, fourth, fifth, and sixth phase angles are calibrated according to the rotation direction of the coating roller. Based on the comparison result between the intermediate temperature value measured by each temperature sensor at the initial phase angle and the initial temperature value, it is determined whether the given second driving speed is to increase or decrease. Furthermore, based on the temperature difference between the temperature value measured by each temperature sensor at the second phase angle and the temperature value measured by the previous temperature sensor at the second phase angle, the amount of increase or decrease of the given second driving speed is determined.

[0019] In one implementation, the difference between two adjacent phase angles is 60°.

[0020] In one embodiment, the third phase angle, the fourth phase angle, and the fifth phase angle are all located within the contact area of ​​the cooling device.

[0021] In one implementation, both the first drive motor and the second drive motor are servo motors.

[0022] The advantages of this invention compared to existing technologies are that both the upper and lower coating devices include a coating roller and a cooling device. Multiple sets of temperature sensors and light-controlled switches are evenly arranged along the circumference of the coating roller. Each set of temperature sensors and light-controlled switches alternately enters and exits the contact area of ​​the cooling device during the rotation cycle of the coating roller. The cooling device dissipates heat from the rubber layer of the coating roller and accurately controls the temperature of the rubber layer through dynamic control, achieving closed-loop control. This ensures that after the rubber layer of the coating roller is pressed against the polymer film, it returns to its initial temperature after passing through the cooling device, thus preventing temperature differences from forming on the roller surface as coating continues. Because multiple sets of temperature sensors and light-controlled switches are evenly arranged circumferentially on the roller surface, the adjustment cycle for the second drive speed is not one revolution of the coating roller. Therefore, the response speed is fast, and the adjustment of the coating roller's rotation speed is synchronously fed back to the steel plate feeding device for centralized control of the steel plate feeding device's feed speed. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the traditional thermal bonding principle mentioned in the background technology;

[0024] Figure 2 A schematic diagram of the hardware structure of a steel plate hot composite production system based on dynamic control provided for an embodiment of the present invention;

[0025] Figure 3 A first schematic diagram of a thermal bonding device provided for an embodiment of the present invention;

[0026] Figure 4 A second schematic diagram of the thermal bonding device provided in an embodiment of the present invention;

[0027] Figure 5 A flowchart of a dynamic control method for a steel plate hot composite production system based on dynamic control, provided for an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the phase angle when the coating roller rotates, provided for an embodiment of the present invention.

[0029] In the diagram: 1. Coating roller; 2. Polymer film; 3. Steel plate; 4. Steel plate feeding device; 5. Thermal lamination device; 6. First drive motor; 7. Upper coating device; 8. Lower coating device; 9. Coating roller; 10. Cooling device; 11. Second drive motor; 12. Temperature sensor; 13. Light control switch; 14. Steel roller; 15. Rubber layer; 16. Mounting groove. Detailed Implementation

[0030] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In one implementation, such as Figure 2-5 As shown.

[0032] The steel plate thermal lamination production system based on dynamic control provided in this embodiment includes a steel plate feeding device 4 and a thermal lamination device 5. The steel plate feeding device 4 is controlled by a first drive motor 6 to control the feeding speed of the steel plate 3. The thermal lamination device 5 includes an upper lamination device 7 and a lower lamination device 8. Both the upper lamination device 7 and the lower lamination device 8 include a lamination roller 9 and a cooling device 10. The rotation speed of the upper and lower lamination rollers 9 is synchronously controlled by a second drive motor 11. The cooling device 10 is attached to the half-circumference of the lamination roller 9 facing away from the steel plate. The system also includes multiple sets of temperature sensors 12 and light-controlled switches 13 evenly arranged on the roller surface of the lamination roller 9 along its circumference. Each set of temperature sensors 12 and light-controlled switches 13 alternately enters and exits the lamination area of ​​the cooling device 10 during the rotation cycle of the lamination roller 9. The system also includes a dynamic control method configured on the first drive motor 6 and the second drive motor 11. The dynamic control method includes acquiring the first light-controlled switch that exits the lamination area of ​​the lamination roller 9 rotating at an initial speed. The temperature value measured by the temperature sensor 12 corresponding to switch 13 is set as the initial temperature value, and the current phase angle of the coating roller 9 is set as the initial phase angle; the highest temperature value measured by the temperature sensor 12 as it rotates with the coating roller 9 is obtained, and the phase angle of the coating roller 9 when the temperature sensor 12 reaches the highest temperature value is set as the high temperature phase angle; based on the initial phase angle, the high temperature phase angle, and the heat dissipation phase angle corresponding to the bonding area, the pre-heat dissipation phase angle corresponding to the temperature sensor 12 from the highest temperature value position to the position entering the bonding area is obtained; based on the pre-heat dissipation parameters and heat dissipation parameters retrieved from the database and the obtained pre-heat dissipation phase angle and heat dissipation phase angle, the first driving speed of the first drive motor 6 and the second drive motor 11 is given; the temperature value measured by the temperature sensor 12 corresponding to the light-controlled switch 13 leaving the bonding area again is repeatedly obtained and set as the intermediate temperature value; based on the comparison result between the current intermediate temperature value and the initial temperature value, the second driving speed of the first drive motor 6 and the second drive motor 11 is given in real time.

[0033] In this embodiment, traditional thermal lamination processes cannot precisely control the temperature of the rubber layer of the laminating roller during production, leading to problems such as film wrinkling, film breakage, and peeling. Therefore, a steel plate thermal lamination production system based on dynamic control is proposed. This thermal lamination production system includes a laminating roller 9 and a cooling device 10 in both the upper laminating device 7 and the lower laminating device 8. Multiple sets of temperature sensors 12 and light-controlled switches 13 are evenly arranged along the circumference of the laminating roller 9. Each set of temperature sensors 12 and light-controlled switches 13 alternately enters and exits the bonding area of ​​the cooling device 10 during the rotation cycle of the laminating roller 9. The cooling device 10 dissipates heat from the rubber layer of the laminating roller and accurately controls the temperature of the rubber layer through dynamic control, achieving closed-loop control. This ensures that after the rubber layer of the laminating roller is pressed against the polymer film, it returns to its initial temperature after passing through the cooling device 10, thereby preventing temperature differences from forming on the surface of the laminating roller as lamination continues.

[0034] In this embodiment, the dynamic control method includes: acquiring the temperature value measured by the temperature sensor 12 corresponding to the first light-controlled switch 13 exiting the bonding area of ​​the coating roller 9 rotating at an initial speed, setting it as the initial temperature value, and setting the current phase angle of the coating roller 9 as the initial phase angle. During the rotation of the coating roller 9, the temperature sensor 12 and the light-controlled switch 13 will alternately exit the bonding area, and the temperature value can be measured by the light-controlled switch 13 detecting changes in light intensity when any set of temperature sensors 12 and light-controlled switches 13 exits the bonding area. At this time, the temperature value measured by the corresponding temperature sensor 12 can be acquired, which is the initial temperature value. The second step is to acquire the highest temperature value measured by the temperature sensor 12 as the coating roller 9 rotates, and set the phase angle of the coating roller 9 when the temperature sensor 12 reaches the highest temperature value as the high temperature phase angle. When a set of temperature sensors 12 and light-controlled switches 13 exit the bonding area, the corresponding roller surface position maintains the initial temperature value until the position rotates to the bottom as the coating roller 9 rotates, i.e., it is pressed against the polymer film. Heat is rapidly conducted from the polymer film to the roller surface, causing it to reach its maximum temperature, after which the roller surface temperature gradually decreases. The third step involves obtaining the pre-heat dissipation phase angle corresponding to the temperature sensor 12's position from the highest temperature value to its entry into the bonding area, based on the initial phase angle, high-temperature phase angle, and the heat dissipation phase angle corresponding to the bonding area. The first drive speed of the first drive motor 6 and the second drive motor 11 is then given based on the pre-heat dissipation parameters and heat dissipation parameters retrieved from the database, along with the obtained pre-heat dissipation and heat dissipation phase angles. In this embodiment, when the roller surface position rotates from its lowest point to the position corresponding to its entry into the bonding area, it naturally dissipates heat through the temperature difference with the workshop temperature field—this is pre-heat dissipation. The portion of the roller surface position that changes within the bonding area constitutes heat dissipation. The pre-heat dissipation parameters and heat dissipation parameters are set based on practical experience and are fuzzy parameters; that is, even after adjusting the pre-heat dissipation parameters and heat dissipation parameters to the first drive speed, the roller surface temperature cannot be accurately controlled to the initial temperature after exiting the bonding area. The fourth step involves repeatedly obtaining the temperature value measured by the temperature sensor 12 corresponding to the photoelectric switch 13 exiting the bonding area again, and setting this as the intermediate temperature value. After one week of rotation, temperature sensor 12 and light control switch 13 emerge from the bonding area, and the temperature at their corresponding roller surface positions is the intermediate temperature value. Fifth, based on the comparison between the current intermediate temperature value and the initial temperature value, the second drive speed of the first drive motor 6 and the second drive motor 11 is given in real time. By comparing the intermediate temperature value and the initial temperature value, if the intermediate temperature value is higher than the initial temperature value, the second drive speed is reduced. Reducing the second drive speed means increasing the contact time between the roller surface and the cooling device 10. If the intermediate temperature value is lower than the initial temperature value, the second drive speed is increased. Increasing the second drive speed means shortening the contact time between the roller surface and the cooling device 10.

[0035] In this embodiment, since the temperature sensor 12 and the light control switch 13 are multiple sets evenly arranged circumferentially on the surface of the coating roller 9, the adjustment cycle of the second drive speed is not one revolution of the coating roller 9. Therefore, the response speed is fast, and by adjusting the rotation speed of the coating roller 9, the feedback is synchronously sent to the steel plate feeding device 4 to adjust the feeding speed of the steel plate feeding device 4, thereby achieving centralized control.

[0036] In one implementation, such as Figure 3 As shown. The steel plate thermal lamination production system based on dynamic control has a coating roller 9 comprising a steel roller 14 and a rubber layer 15 disposed outside the steel roller 14.

[0037] In this embodiment, the structure of the coating roller 9 is a conventional structure of the coating roller 9.

[0038] In one implementation, such as Figure 3 As shown. In this steel plate thermal composite production system based on dynamic control, a number of mounting grooves 16 are opened on the rubber layer 15. The temperature sensor 12 and the light control switch 13 are embedded in the mounting grooves 16, and together with the surface of the rubber layer 15, they form the circumferential surface of the coating roller 9.

[0039] In this embodiment, unlike traditional coating rollers, the coating roller 9 is provided with a mounting groove 16. By setting a temperature sensor 12 and a light control switch 13 in the mounting groove 16, the rotation speed of the coating roller 9 can be precisely controlled.

[0040] In one embodiment, the first driving speed of the dynamically controlled steel plate hot-compositing production system includes a first driving speed of a first motor corresponding to a first driving motor 6 and a first driving speed of a second motor corresponding to a second driving motor 11, wherein the first driving speed of the first motor and the first driving speed of the second motor are positively correlated. The second driving speed of the dynamically controlled steel plate hot-compositing production system includes a second driving speed of a first motor corresponding to a first driving motor 6 and a second driving speed of a second motor corresponding to a second driving motor 11, wherein the second driving speed of the first motor and the second driving speed of the second motor are positively correlated.

[0041] In one implementation, such as Figure 3 and Figure 6 As shown.

[0042] The steel plate thermal composite production system based on dynamic control provided in this embodiment has six groups of temperature sensors 12 and light control switches 13. The high-temperature phase angle is calibrated as the first phase angle, and the remaining second, third, fourth, fifth, and sixth phase angles are calibrated according to the rotation direction of the coating roller 9. Based on the comparison between the intermediate temperature value and the initial temperature value measured by each temperature sensor 12 at the initial phase angle, it is determined whether the given second driving speed is to increase or decrease. Furthermore, based on the temperature difference between the temperature value measured by each temperature sensor 12 at the second phase angle and the temperature value measured by the previous temperature sensor 12 at the second phase angle, the amount of increase or decrease of the given second driving speed is determined.

[0043] In this embodiment, since the contact area of ​​the cooling device 10 covers a phase angle range of 180°, such as Figure 6 As shown, if a set of temperature sensors 12 is at the bottom, pressing against the polymer film, and to ensure that a set of temperature sensors 12 has emerged from the bonding area, then six sets of temperature sensors 12 and light-controlled switches 13 should be set. When the six sets are evenly distributed, temperature data will be generated at each phase angle every 60° rotation, thus generating a set of data. A characteristic of this set of data is that the temperature values ​​at the first phase angle are almost equal, while the temperature values ​​at other phase angles are different because the rotation speed is adjusted in real time. Of course, in an ideal state, i.e., with good temperature control, the temperature value at the sixth phase angle is also almost equal. The aforementioned embodiment mentions dynamic control, which is to give a second driving speed by comparing the intermediate temperature value with the initial temperature value. The result of giving the second driving speed is to continuously make the next intermediate temperature value greater than or less than the initial temperature value, even if the intermediate temperature value fluctuates around the initial temperature value, thereby matching the second driving speed. In this embodiment, based on this, the given second driving speed is determined to be either an increase or a decrease based on the comparison between the intermediate temperature value measured by each temperature sensor 12 at the initial phase angle and the initial temperature value measured by the previous temperature sensor 12 at the second phase angle. Furthermore, the magnitude of the increase or decrease in the given second driving speed is determined based on the temperature difference between the intermediate temperature value measured by each temperature sensor 12 at the second phase angle and the temperature value measured by the previous temperature sensor 12 at the second phase angle. This further improves the accuracy of control. Because the comparison between the intermediate temperature value measured at the initial phase angle and the initial temperature value determines whether to increase or decrease speed, according to the adjustments in the aforementioned embodiment, increase speed is followed by decrease, and decrease is followed by increase. In this embodiment, the magnitude of the increase or decrease in the given second driving speed is determined based on the temperature difference between the temperature value measured at the second phase angle and the temperature value measured by the previous temperature sensor 12 at the second phase angle, i.e., before entering the bonding area, achieving more precise control. After this adjustment, the intermediate temperature value and the initial temperature value of each set of temperature sensors 12 exiting the bonding area will be closer.

[0044] In one embodiment, the steel plate thermal bonding production system based on dynamic control has an adjacent phase angle difference of 60°. Its third, fourth, and fifth phase angles are all located within the contact area of ​​the cooling device 10. Its first drive motor 6 and second drive motor 11 are both servo motors.

[0045] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A steel plate hot composite production system based on dynamic control, characterized in that, The device includes a steel plate feeding device (4) and a thermal bonding device (5). The steel plate feeding device (4) is controlled by a first drive motor (6) to control the feeding speed of the steel plate (3). The thermal bonding device (5) includes an upper coating device (7) and a lower coating device (8). Both the upper coating device (7) and the lower coating device (8) include a coating roller (9) and a cooling device (10). The upper and lower coating rollers (9) are synchronously controlled by a second drive motor (11) to rotate. The cooling device (10) is attached to the half-circumference of the coating roller (9) facing away from the steel plate. The device also includes multiple sets of temperature sensors (12) and light control switches (13) evenly arranged along the circumference of the coating roller (9) on the roller surface of the coating roller (9). Each set of temperature sensors (12) and light control switches (13) alternately enters and exits the contact area of ​​the cooling device (10) during the rotation cycle of the coating roller (9). It also includes a dynamic control method configured on the first drive motor (6) and the second drive motor (11), the dynamic control method comprising: The temperature value measured by the temperature sensor (12) corresponding to the first light control switch (13) of the coating roller (9) rotating at the initial speed is obtained and set as the initial temperature value, and the current phase angle of the coating roller (9) is set as the initial phase angle; The highest temperature value measured by the temperature sensor (12) as the coating roller (9) rotates is obtained, and the phase angle of the coating roller (9) when the temperature sensor (12) reaches the highest temperature value is set as the high temperature phase angle; Based on the initial phase angle, the high temperature phase angle, and the heat dissipation phase angle corresponding to the bonding area, the pre-heat dissipation phase angle corresponding to the temperature sensor (12) from the position of the highest temperature value to the position of entering the bonding area is obtained. Based on the pre-heat dissipation parameters and heat dissipation parameters retrieved from the database and the obtained pre-heat dissipation phase angle and heat dissipation phase angle, the first driving speed of the first drive motor (6) and the second drive motor (11) is given. Repeat the acquisition of the temperature value measured by the temperature sensor (12) corresponding to the bonding area from the light control switch (13) and set it as the intermediate temperature value; Based on the comparison between the current intermediate temperature value and the initial temperature value, the second driving speed of the first drive motor (6) and the second drive motor (11) is given in real time; The temperature sensor (12) and the light control switch (13) are set into six groups. The high temperature phase angle is calibrated as the first phase angle, and the remaining second, third, fourth, fifth and sixth phase angles are calibrated according to the rotation direction of the coating roller (9). Based on the comparison result between the intermediate temperature value and the initial temperature value measured by each temperature sensor (12) at the initial phase angle, it is determined whether the given second driving speed is to increase or decrease. Also, based on the temperature difference between the temperature value measured by each temperature sensor (12) at the second phase angle and the temperature value measured by the previous temperature sensor (12) at the second phase angle, it is determined whether the given second driving speed increases or decreases by a certain amount.

2. The steel plate hot composite production system based on dynamic control according to claim 1, characterized in that, The coating roller (9) includes a steel roller (14) and a rubber layer (15) disposed outside the steel roller (14).

3. The steel plate hot composite production system based on dynamic control according to claim 2, characterized in that, The rubber layer (15) has several mounting grooves (16), the temperature sensor (12) and the light control switch (13) are embedded in the mounting grooves (16), and together with the surface of the rubber layer (15), they form the circumferential surface of the coating roller (9).

4. The steel plate hot composite production system based on dynamic control according to claim 1, characterized in that, The first driving speed includes the first driving speed of the first motor corresponding to the first driving motor (6) and the first driving speed of the second motor corresponding to the second driving motor (11), and the first driving speed of the first motor and the first driving speed of the second motor are positively correlated.

5. The steel plate hot composite production system based on dynamic control according to claim 1, characterized in that, The second driving speed includes the first motor second driving speed corresponding to the first driving motor (6) and the second motor second driving speed corresponding to the second driving motor (11), and the first motor second driving speed and the second motor second driving speed are positively correlated.

6. The steel plate hot composite production system based on dynamic control according to claim 1, characterized in that, The difference between two adjacent phase angles is 60°.

7. The steel plate hot composite production system based on dynamic control according to claim 1, characterized in that, The third phase angle, the fourth phase angle, and the fifth phase angle are all located within the contact area of ​​the cooling device (10).

8. The steel plate hot composite production system based on dynamic control according to claim 1, characterized in that, Both the first drive motor (6) and the second drive motor (11) are servo motors.

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