A production plant for continuously rolled copper clad aluminium alloy profiles

Abstract

The application discloses a production equipment for continuously rolling copper-coated aluminum alloy profiles, which comprises a rolling rack, a basic heating cover, a compensation heating mechanism, a flame length adjusting mechanism, a mechanical temperature sensing element and a linkage execution mechanism. The basic heating cover is arranged outside the rolling rack and is internally provided with an electric heating pipe; the compensation heating mechanism is installed inside the basic heating cover and comprises a burner and a flame guide cover with a flame spout; the flame length adjusting mechanism comprises a fan, an air guide pipe and an air volume adjusting valve; and the linkage execution mechanism comprises a heat collecting main pipe, a thermal expansion driving rod, a fuel adjusting valve and a first transmission member. When the temperature sensing element detects a temperature drop, the thermal expansion driving rod moves, and meanwhile, the opening degrees of the fuel adjusting valve and the air volume adjusting valve are increased, the fuel supply amount and the air volume are increased, the flame is extended to the direction of the flame spout, and the low-temperature position is compensated and heated. The application realizes the organic combination of composite heating and accurate temperature compensation, and improves the temperature control precision.

Description

Technical Field

[0001] This invention relates to the field of rolling equipment technology, specifically to a production equipment for continuously rolling copper-clad aluminum alloy profiles. Background Technology

[0002] Copper-clad aluminum alloy profiles are composite materials with an aluminum alloy matrix and an outer copper cladding. They combine the excellent electrical and thermal conductivity of copper with the lightweight and cost-effectiveness of aluminum alloys, making them widely used in power transmission, electronic devices, and architectural decoration. During continuous rolling, temperature control is a critical factor affecting product quality. Uneven rolling temperatures can lead to poor bonding between the copper layer and the aluminum alloy matrix, cracks, and uneven thickness, affecting yield and product performance. Existing continuous rolling equipment typically uses either electric heating or open flame heating to heat the rolling zone.

[0003] However, in actual production, the above heating methods have the following technical problems: First, although electric heating provides good heating uniformity, its thermal response is slow, making it difficult to compensate for local temperature fluctuations in a timely manner, leading to dynamic imbalance in the temperature field. This lag is particularly pronounced when rolling speed changes or profile specifications are switched. Second, while traditional open flame heating provides rapid heating, the flame length and heating area are difficult to control precisely, easily causing localized overheating or underheating. Furthermore, there is a lack of coordination between open flame and electric heating, making it impossible to dynamically adjust heating parameters based on temperature detection results. Third, existing equipment often uses single-point temperature measurement, which cannot comprehensively reflect the temperature distribution across the rolling area, resulting in a lack of accurate basis for temperature compensation. Even with multiple temperature measurement points, electronic control systems are often used for signal acquisition and processing, leading to complex and costly systems with unreliable performance under harsh conditions such as high temperatures and dust. Fourth, when the temperature is low at the far end of the rolling zone, the flame of traditional open flame heating is difficult to effectively cover the distant area. Simply increasing the flame intensity can easily cause overheating at the near end, and there is a lack of effective means to actively control the flame length. Therefore, a new production equipment for continuously rolling copper-clad aluminum alloy profiles has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] This application provides a production equipment for continuously rolling copper-clad aluminum alloy profiles, including a rolling mill stand, comprising: A basic heating shroud is disposed outside the rolling area of ​​the rolling mill stand, and an electric heating tube is provided inside the basic heating shroud; A compensating heating mechanism is installed inside the basic heating shroud. The compensating heating mechanism includes a burner and a flame guide shroud. The fuel inlet of the burner is connected to a fuel source through a fuel pipeline. The flame guide shroud is installed at the output end of the burner and has a flame nozzle that opens toward the heating position inside the rolling mill stand. The flame length adjustment mechanism includes a fan, an air duct, and an air volume regulating valve. The fan is installed at one end of the base heating hood. The air inlet of the air duct is connected to the output end of the fan, and the air outlet faces the burner. The air volume regulating valve is installed on the air duct. Several mechanical temperature sensing elements are arranged in the rolling area of ​​the rolling mill stand, and the sensing end of each mechanical temperature sensing element is close to the rolling part to be measured. The joint implementing agencies include: The heat collection main pipe is filled with a thermal expansion medium and is connected to the fixed end of the mechanical temperature sensing element. The thermal expansion drive rod has one end that is slidably and sealingly inserted into the interior of the heat collection main pipe, and the other end that is the drive end; A fuel regulating valve is installed on the fuel pipeline, and its valve core is linked to the drive end of the thermal expansion drive rod. The first transmission component is connected between the drive end of the thermal expansion drive rod and the valve core of the air volume regulating valve. When any of the mechanical temperature sensing elements detects a decrease in temperature at the corresponding location, the medium inside the heat collection main pipe contracts, driving the thermal expansion drive rod to move away from the heat collection main pipe. At the same time, the drive end of the thermal expansion drive rod increases the opening of the fuel regulating valve and drives the air volume regulating valve to open wider through the first transmission component.

[0005] Optionally, the angle of the air duct is set to form an acute angle with the flame jet direction of the burner; the air volume regulating valve is used to regulate the air volume entering the flame guide shroud. When the driving end of the thermal expansion drive rod increases the opening of the fuel regulating valve, the fuel supply is increased. When the air volume regulating valve is opened, the air volume blown by the fan to the burner is increased, so that the flame generated by the burner extends towards the flame nozzle.

[0006] Optionally, the basic heating cover has a double-layer shell structure, including an outer metal shell and an inner refractory lining, with a thermal insulation material layer filling the space between the outer metal shell and the inner refractory lining. The electric heating tubes are arranged in multiple rows and columns along the rolling direction of the rolling mill stand, and the axial direction of each electric heating tube is perpendicular to the rolling direction of the rolling mill stand. The two ends of the basic heating cover are respectively provided with an inlet guide port and an outlet guide port for the profile to enter and exit. Both the inlet guide port and the outlet guide port are equipped with an openable and closable heat-insulating door panel, and the inner side of the heat-insulating door panel is lined with a refractory fiber layer. The top of the basic heating cover is also provided with several maintenance windows, and each maintenance window is covered with a removable sealing cover.

[0007] Optionally, multiple compensation heating mechanisms are provided, and are arranged at intervals inside the base heating shroud along the rolling direction of the rolling mill stand; The burner is a premixed burner, including a mixing chamber and a burner head. The mixing chamber is provided with a fuel inlet and a primary air inlet. The fuel inlet is connected to the fuel pipeline, and the primary air inlet is connected to the primary air source. The flame guide hood has a trumpet-shaped structure, with its small opening end sealed to the output end of the burner, and its large opening end forming the flame nozzle. The inner wall of the flame guide shroud is provided with a spiral guide groove; A replaceable nozzle bushing is installed at the flame nozzle, and the inner diameter of the nozzle bushing is smaller than the inner diameter of the large end of the flame guide shroud.

[0008] Optionally, the fan is a variable frequency speed control fan, and its motor is electrically connected to the frequency converter; The air duct is a high-temperature resistant stainless steel corrugated flexible hose that can be bent and deformed to adjust the air outlet angle; an adjustable angle guide grille is installed at the air outlet of the air duct, and the guide grille includes multiple parallel guide blades, each of which is connected by a linkage rod. The air volume regulating valve is an electric proportional regulating valve, the valve body of which is installed on the air duct, and its electric actuator is connected to the first transmission component. The acute angle formed by the axis of the air duct and the flame jet axis of the burner is between 100° and 100°.

[0009] Optionally, the mechanical temperature sensing element is a liquid-filled temperature bulb or an air-filled temperature bulb. Each mechanical temperature sensing element includes a temperature sensing probe, a capillary tube, and a connecting joint. The temperature sensing probe is located close to the rolling part to be tested. The connecting joint is connected to the temperature sensing probe through the capillary tube and is also connected to the heat collection main pipe. The plurality of mechanical temperature sensing elements are arranged in an array along the rolling direction of the rolling mill stand; each of the mechanical temperature sensing elements is covered with a protective sleeve, one end of which is fixed to the rolling mill stand, and the other end is open towards the rolling part to be tested, and the temperature sensing probe is located inside the protective sleeve.

[0010] Optionally, the main heat collection pipe is a cylindrical sealed container, horizontally installed outside the basic heating cover, and its outer wall is covered with a heat insulation layer. The driving end of the thermal expansion drive rod is provided with a first connecting ear and a second connecting ear. The first connecting ear is connected to the valve core of the fuel regulating valve through a linkage mechanism, and the second connecting ear is hinged to one end of the first transmission component. The first transmission component is a rigid transmission rod or a flexible steel wire. When the first transmission component is a flexible steel wire, a guide sleeve is provided on its outside. The two ends of the guide sleeve are respectively fixed on the brackets near the base heating cover and the air volume regulating valve. Both the fuel regulating valve and the air volume regulating valve are normally closed regulating valves and are equipped with a return spring. When the thermal expansion drive rod moves away from the heat collection main pipe, the drive end overcomes the return spring force of the fuel regulating valve to open it, and at the same time, it overcomes the return spring force of the air volume regulating valve to open it through the first transmission component.

[0011] The beneficial effects of this application are as follows: 1. This invention provides a stable and uniform basic heat source for the rolling zone by setting up a basic heating hood and its internal electric heating tubes; simultaneously, a compensating heating mechanism is set up inside the basic heating hood, using an open flame generated by a burner as a supplementary heat source. When the temperature is too low at a certain location in the rolling zone, the fuel regulating valve and air volume regulating valve are synchronously adjusted by a linkage actuator, causing the burner to generate an enhanced flame for point compensation. This composite heating mode ensures both the uniformity of the overall temperature field and the ability to rapidly raise the temperature in localized areas, significantly improving the temperature control accuracy of the rolling process. 2. This invention incorporates a fan mounted on a basic heating hood, directing airflow to the burner's output end via a duct. The duct's angle forms an acute angle with the flame jet direction. When compensation is needed for distant, low-temperature locations, a linkage actuator drives the airflow regulating valve to open wider, increasing the airflow from the fan to the burner. This causes the flame to extend towards the flame nozzle under the influence of the airflow, thus precisely delivering heat to the distant area to be heated. This flame length adjustment method is simple in structure, responds quickly, and effectively solves the problem of traditional open-flame heating being unable to cover distant locations. Attached Figure Description

[0012] Figure 1A schematic diagram of the internal structure of the rolling mill frame and the basic heating hood of the production equipment for continuously rolling copper-clad aluminum alloy profiles provided in this application; Figure 2 A schematic cross-sectional view of the back shell of the base heating cover of the production equipment for continuously rolled copper-clad aluminum alloy profiles provided in this application; Figure 3 A schematic diagram of the internal structure of the linkage actuator of the production equipment for continuously rolled copper-clad aluminum alloy profiles provided in this application; Figure 4 A partial structural schematic diagram of the flame length adjustment mechanism of the production equipment for continuously rolled copper-clad aluminum alloy profiles provided in this application; In the diagram: 1. Rolling mill stand; 2. Basic heating hood; 3. Electric heating tube; 4. Compensating heating mechanism; 41. Burner; 42. Fuel pipeline; 43. Flame guide hood; 44. Flame nozzle; 45. Fuel regulating valve; 5. Flame length adjusting mechanism; 51. Fan; 52. Air duct; 53. Air volume regulating valve; 6. Mechanical temperature sensing element; 7. Linkage actuator; 71. Heat collection main pipe; 72. Thermal expansion drive rod; 73. First transmission component. Detailed Implementation

[0013] The technical solutions of the embodiments 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Please refer to Figures 1 to 4 As shown in the figure, the production equipment for continuous rolling of copper-clad aluminum alloy profiles provided in this embodiment includes a rolling mill frame 1, a basic heating cover 2, a compensating heating mechanism 4, a flame length adjustment mechanism 5, several mechanical temperature sensing elements 6, and a linkage execution mechanism 7.

[0015] A basic heating cover 2 is disposed outside the rolling area of ​​the rolling mill stand 1, and an electric heating tube 3 is provided inside the basic heating cover 2; Compensating heating mechanism 4 is installed inside the basic heating cover 2. The compensating heating mechanism 4 includes a burner 41 and a flame guide cover 43. The fuel inlet of the burner 41 is connected to the fuel source through a fuel pipeline 42. The flame guide cover 43 is installed at the output end of the burner 41 and has a flame nozzle 44 that opens toward the heating position inside the rolling mill stand 1. The flame length adjustment mechanism 5 includes a fan 51, an air duct 52 and an air volume regulating valve 53. The fan 51 is installed at one end of the base heating cover 2. The air inlet of the air duct 52 is connected to the output end of the fan 51, and the air outlet faces the burner 41. The air volume regulating valve 53 is set on the air duct 52. Several mechanical temperature sensing elements 6 are arranged in the rolling area of ​​the rolling mill stand 1, and the temperature sensing end of each mechanical temperature sensing element 6 is close to the rolling part to be measured. The seven joint execution agencies include: The heat collection main pipe 71 is filled with a thermal expansion medium and is connected to the fixed end of the mechanical temperature sensing element 6. The thermal expansion drive rod 72 has one end slidably and sealingly inserted into the interior of the heat collection main pipe 71, and the other end is the drive end; A fuel regulating valve 45 is installed on the fuel line 42, and its valve core is linked to the drive end of the thermal expansion drive rod 72. The first transmission component 73 is connected between the drive end of the thermal expansion drive rod 72 and the valve core of the air volume regulating valve 53. When any of the mechanical temperature sensing elements 6 detects a decrease in temperature at the corresponding location, the medium inside the heat collection main pipe 71 contracts, driving the thermal expansion drive rod 72 to move away from the heat collection main pipe 71. At the same time, the driving end of the thermal expansion drive rod 72 increases the opening of the fuel regulating valve 45 and drives the air volume regulating valve 53 to open wider through the first transmission member 73.

[0016] The rolling mill stand 1 is a conventional continuous rolling equipment in the field, with multiple rolls arranged sequentially along the rolling direction inside for multi-pass rolling of copper-clad aluminum alloy profiles.

[0017] The basic heating cover 2 is a double-layer shell structure, fitted outside the rolling area of ​​the rolling mill stand 1. Specifically, as shown... Figure 2 As shown, the basic heating hood 2 includes an outer metal shell and an inner refractory lining. An insulation material layer, such as aluminum silicate fiber cotton, is filled between the outer metal shell and the inner refractory lining. Several electric heating tubes 3 are evenly distributed inside the basic heating hood 2. In this embodiment, 20 electric heating tubes 3 are arranged in a column array along the rolling direction, with the axial direction of each electric heating tube 3 perpendicular to the rolling direction. The basic heating hood 2 has an inlet guide port and an outlet guide port at both ends for the profile to enter and exit. Both the inlet and outlet guide ports are equipped with openable and closable insulation doors, the inner side of which is lined with a refractory fiber layer. The top of the basic heating hood 2 also has two maintenance windows, each covered with a removable sealing cover for easy maintenance of the internal equipment.

[0018] like Figure 1 and Figure 2 As shown, multiple compensation heating mechanisms 4 can be configured. In this embodiment, one compensation heating mechanism 4 is arranged at intervals along the rolling direction, all installed inside the basic heating cover 2. Each compensation heating mechanism 4 includes a burner 41 and a flame guide hood 43. The burner 41 is a premixed burner, including a mixing chamber and a combustion head. The mixing chamber is provided with a fuel inlet and a primary air inlet. The fuel inlet is connected to a fuel source through a fuel pipeline 42, and the primary air inlet is connected to a primary air source to provide the primary air required for combustion. The flame guide hood 43 is a trumpet-shaped structure made of heat-resistant stainless steel. Its small end is sealed to the output end of the burner 41 through a flange, and its large end forms a flame nozzle 44, which opens towards the heating position inside the rolling mill stand 1. The inner wall of the flame guide hood 43 is provided with a spiral guide groove to guide the flame airflow to form a rotating spray effect, improving heating uniformity. A replaceable refractory nozzle bushing is installed at the flame nozzle 44. The inner diameter of the nozzle bushing is smaller than the inner diameter of the large end of the flame guide hood 43. In this embodiment, the inner diameter of the nozzle bushing is 50 mm, and the inner diameter of the large end of the flame guide hood 43 is 80 mm.

[0019] like Figure 1 and Figure 4 As shown, the angle of the air duct 52 forms an acute angle with the flame jet direction of the burner 41; the air volume regulating valve 53 is used to regulate the amount of air entering the flame guide shroud 43. When the driving end of the thermal expansion drive rod 72 increases the opening of the fuel regulating valve 45, the fuel supply is increased. When the air volume regulating valve 53 is opened, the air volume blown by the fan 51 toward the burner 41 is increased, so that the flame generated by the burner 41 extends toward the flame nozzle 44.

[0020] The flame length adjustment mechanism 5 includes a fan 51, an air duct 52, and an airflow regulating valve 53. The fan 51 is a variable frequency speed-regulating fan, installed on the outer top plate of the base heating hood 2. Its motor is electrically connected to the frequency converter, allowing for speed adjustment as needed. The air duct 52 is a high-temperature resistant stainless steel corrugated flexible hose, bendable to adjust the air outlet angle. Its inlet is connected to the output end of the fan 51, and its outlet faces the output end of the burner 41. An adjustable-angle guide grille is installed at the outlet of the air duct 52. The guide grille includes multiple parallel guide vanes, each connected by a linkage rod, allowing for synchronous adjustment of the vane deflection angle. The airflow regulating valve 53 is an electric proportional regulating valve, its body installed on the air duct 52, used to regulate the airflow entering the flame guide hood 43. In this embodiment, the horizontal distance between the air outlet of the air duct 52 and the output end of the burner 41 is 100mm, and the acute angle α formed by the axis of the air duct 52 and the flame jet axis of the burner 41 is 30°.

[0021] like Figure 1 As shown, the plurality of mechanical temperature sensing elements 6 are evenly distributed along the rolling direction in the rolling area of ​​the rolling mill stand 1. In this embodiment, 10 mechanical temperature sensing elements 6 are provided, with a spacing of 100 mm between adjacent pairs. Each mechanical temperature sensing element 6 is a liquid-filled temperature bulb, including a temperature probe, a capillary tube, and a connecting joint. The temperature probe is positioned close to the rolling part to be tested and is used to detect the temperature at that location; the connecting joint is connected to the temperature probe through the capillary tube. Each mechanical temperature sensing element 6 is covered with a heat-resistant stainless steel protective sleeve. One end of the protective sleeve is fixed to the rolling mill stand 1, and the other end opens towards the rolling part to be tested. The temperature probe is located inside the protective sleeve, which can effectively prevent high temperature and mechanical damage.

[0022] like Figure 1 and Figure 3As shown, the linkage actuator 7 includes a heat collection main pipe 71, a thermal expansion drive rod 72, a fuel regulating valve 45, and a first transmission component 73. The heat collection main pipe 71 is a cylindrical sealed container, horizontally installed outside the base heating cover 2, and its outer wall is covered with a heat insulation layer. The heat collection main pipe 71 is filled with a thermal expansion medium; in this embodiment, a temperature-sensing oil with an expansion coefficient of 0.12% / ℃ is selected. The heat collection main pipe 71 is connected to each mechanical temperature sensing element 6 via a pipeline. When any temperature sensing element detects a temperature change, the volume of its internal medium changes, which is transmitted to the heat collection main pipe 71 through a capillary tube. One end of the thermal expansion drive rod 72 is slidably and sealingly inserted into the interior of the heat collection main pipe 71, and the other end is the drive end, which can extend and retract with the change in the volume of the medium inside the heat collection main pipe 71. The drive end of the thermal expansion drive rod 72 is provided with a first connecting lug and a second connecting lug. The fuel regulating valve 45 is mounted on the fuel pipeline 42. It is a normally closed regulating valve with an internal return spring. Its valve core is linked to the first connecting lug of the thermal expansion drive rod 72 via a linkage mechanism. The first transmission component 73 is a flexible steel wire, one end of which is hinged to the second connecting lug of the thermal expansion drive rod 72, and the other end is connected to the valve core of the airflow regulating valve 53. A guide sleeve is fitted around the first transmission component 73. The two ends of the guide sleeve are fixed to the brackets near the base heating cover 2 and the airflow regulating valve 53, respectively, to ensure smooth and reliable transmission.

[0023] The working process of this embodiment is as follows: When the equipment is operating normally, the electric heating tube 3 is energized and heats up, heating the internal space of the base heating hood 2 to keep the rolling area within the set base temperature range. At the same time, the burner 41 continues to burn at a lower heat level, providing auxiliary heating to the rolling area through the flame guide hood 43.

[0024] During the rolling process, if the temperature at a certain location in the rolling zone decreases due to changes in profile specifications or fluctuations in rolling speed, the temperature-sensing probe of the mechanical temperature-sensing element 6 located at that location detects the temperature drop. The volume of the internal temperature-sensing medium contracts, and this contraction is transmitted through the capillary tube to the heat collection manifold 71, causing the overall volume of the medium within the heat collection manifold 71 to contract and the pressure to decrease. This pressure reduction within the heat collection manifold 71 drives the thermal expansion drive rod 72 to move away from the heat collection manifold 71.

[0025] When the thermal expansion drive rod 72 moves, its drive end simultaneously generates two actions: first, it pulls the valve core of the fuel regulating valve 45 through the first connecting ear and the linkage mechanism, overcoming the spring force of the return spring to increase the opening of the fuel regulating valve 45 and increase the fuel supply to the burner 41; second, it pulls the first transmission component 73 through the second connecting ear, and the first transmission component 73 transmits the pulling force through the guide sleeve, driving the valve core of the air volume regulating valve 53 to overcome its return spring force and increase the opening, thereby increasing the air volume blown by the fan 51 to the burner 41.

[0026] The simultaneous increase in fuel supply and air volume enhances the flame intensity produced by burner 41. Simultaneously, due to the increased opening of air volume regulating valve 53, the airflow from fan 51 is directed through air duct 52 at a 30° angle towards the output end of burner 41. Under the influence of this airflow, the flame extends towards flame nozzle 44, forming a longer heating flame, which is then rapidly compensated for and heated at a distant, low-temperature location via flame nozzle 44.

[0027] When the temperature at the low-temperature location rises back to the normal range, the medium inside the mechanical temperature sensing element 6 expands due to heat, increasing the pressure inside the heat collection main pipe 71. This drives the thermal expansion drive rod 72 to move closer to the heat collection main pipe 71 and reset. When the thermal expansion drive rod 72 resets, the fuel regulating valve 45 and the air volume regulating valve 53 close synchronously under the action of their internal reset springs, restoring the flame length and intensity to normal and stopping the compensation heating.

[0028] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A production equipment for continuous rolling of copper-clad aluminum alloy profiles, comprising a rolling mill stand (1), characterized in that, include: A base heating cover (2) is provided outside the rolling area of ​​the rolling mill stand (1), and an electric heating tube (3) is provided inside the base heating cover (2). The compensating heating mechanism (4) is installed inside the basic heating cover (2). The compensating heating mechanism (4) includes a burner (41) and a flame guide cover (43). The fuel inlet of the burner (41) is connected to the fuel source through a fuel pipeline (42). The flame guide cover (43) is installed at the output end of the burner (41) and has a flame nozzle (44) that opens toward the heating position inside the rolling mill stand (1). The flame length adjustment mechanism (5) includes a fan (51), an air duct (52) and an air volume regulating valve (53). The fan (51) is installed at one end of the base heating cover (2). The air inlet of the air duct (52) is connected to the output end of the fan (51), and the air outlet faces the burner (41). The air volume regulating valve (53) is set on the air duct (52). Several mechanical temperature sensing elements (6) are arranged in the rolling area of ​​the rolling mill stand (1), and the temperature sensing end of each mechanical temperature sensing element (6) is close to the rolling part to be tested. The joint execution mechanism (7) includes: The heat collection main pipe (71) is filled with a thermal expansion medium and is connected to the fixed end of the mechanical temperature sensing element (6); The thermal expansion drive rod (72) has one end slidably and sealingly inserted into the interior of the heat collection main pipe (71), and the other end is the drive end; A fuel regulating valve (45) is installed on the fuel pipeline (42), and its valve core is linked to the drive end of the thermal expansion drive rod (72). The first transmission component (73) is connected between the drive end of the thermal expansion drive rod (72) and the valve core of the air volume regulating valve (53); When any of the mechanical temperature sensing elements (6) detects a decrease in temperature at the corresponding position, the medium inside the heat collection main pipe (71) contracts, driving the thermal expansion drive rod (72) to move away from the heat collection main pipe (71). At the same time, the drive end of the thermal expansion drive rod (72) increases the opening of the fuel regulating valve (45) and drives the air volume regulating valve (53) to open wider through the first transmission member (73).

2. The production equipment for continuous rolling of copper-clad aluminum alloy profiles according to claim 1, characterized in that: The angle of the air duct (52) forms an acute angle with the flame jet direction of the burner (41); the air volume regulating valve (53) is used to regulate the amount of air entering the flame guide shroud (43). When the driving end of the thermal expansion drive rod (72) increases the opening of the fuel regulating valve (45), the fuel supply is increased. When the air volume regulating valve (53) is opened, the air volume blown by the fan (51) toward the burner (41) is increased, so that the flame generated by the burner (41) extends toward the flame nozzle (44).

3. The production equipment for continuous rolling of copper-clad aluminum alloy profiles according to claim 1, characterized in that: The basic heating cover (2) is a double-shell structure, including an outer metal shell and an inner refractory lining, with a heat insulation material layer filling the space between the outer metal shell and the inner refractory lining. The electric heating tubes (3) are arranged in multiple rows and columns along the rolling direction of the rolling mill stand (1), and the axial direction of each electric heating tube (3) is perpendicular to the rolling direction of the rolling mill stand (1); the two ends of the base heating cover (2) are respectively provided with an inlet guide port and an outlet guide port for the profile to enter and exit, and an openable and closable heat-insulating door plate is installed at both the inlet guide port and the outlet guide port, and the inner side of the heat-insulating door plate is lined with a fire-resistant fiber layer; the top of the base heating cover (2) is also provided with several maintenance windows, and each maintenance window is covered with a removable sealing cover plate.

4. The production equipment for continuous rolling of copper-clad aluminum alloy profiles according to claim 1, characterized in that: The compensation heating mechanism (4) is configured as a plurality of such mechanisms, which are arranged at intervals inside the base heating cover (2) along the rolling direction of the rolling mill stand (1); The burner (41) is a premixed burner, including a mixing chamber and a burner head. The mixing chamber is provided with a fuel inlet and a primary air inlet. The fuel inlet is connected to the fuel pipeline (42), and the primary air inlet is connected to the primary air source. The flame guide hood (43) has a horn-shaped structure, with its small end sealed to the output end of the burner (41) and its large end forming the flame nozzle (44). The inner wall of the flame guide shroud (43) is provided with a spiral guide groove; A replaceable nozzle bushing is installed at the flame nozzle (44), the inner diameter of which is smaller than the inner diameter of the large end of the flame guide shroud (43).

5. The production equipment for continuous rolling of copper-clad aluminum alloy profiles according to claim 1, characterized in that: The fan (51) is a variable frequency speed control fan, and its motor is electrically connected to the frequency converter; The air duct (52) is a high-temperature resistant stainless steel corrugated hose that can be bent and deformed to adjust the air outlet angle; an adjustable angle guide grille is installed at the air outlet of the air duct (52), and the guide grille includes multiple parallel guide blades, each of which is connected by a linkage rod. The air volume regulating valve (53) is an electric proportional regulating valve, whose valve body is installed on the pipeline of the air guide pipe (52), and whose electric actuator is connected to the first transmission component (73); The acute angle formed by the axis of the air duct (52) and the flame jet axis of the burner (41) is 15 to 45 degrees.

6. The production equipment for continuous rolling of copper-clad aluminum alloy profiles according to claim 1, characterized in that: The mechanical temperature sensing element (6) is a liquid-filled temperature bulb or an air-filled temperature bulb. Each mechanical temperature sensing element (6) includes a temperature sensing probe, a capillary tube and a connecting joint. The temperature sensing probe is located close to the rolling part to be tested. The connecting joint is connected to the temperature sensing probe through the capillary tube and is connected to the heat collection main pipe (71). The plurality of mechanical temperature sensing elements (6) are arranged in an array along the rolling direction of the rolling mill stand (1); each of the mechanical temperature sensing elements (6) is covered with a protective sleeve, one end of the protective sleeve is fixed on the rolling mill stand (1), and the other end is open towards the rolling part to be tested, and the temperature sensing probe is located inside the protective sleeve.

7. The production equipment for continuous rolling of copper-clad aluminum alloy profiles according to claim 1, characterized in that: The main heat collection pipe (71) is a cylindrical sealed container, which is horizontally installed outside the basic heating cover (2), and its outer wall is covered with a heat insulation layer. The driving end of the thermal expansion drive rod (72) is provided with a first connecting ear and a second connecting ear. The first connecting ear is connected to the valve core of the fuel regulating valve (45) through a linkage mechanism, and the second connecting ear is hinged to one end of the first transmission member (73). The first transmission component (73) is a rigid transmission rod or a flexible steel wire pull line. When the first transmission component (73) is a flexible steel wire pull line, a guide sleeve is provided on its outside. The two ends of the guide sleeve are respectively fixed on the brackets near the base heating cover (2) and the air volume regulating valve (53). Both the fuel regulating valve (45) and the air volume regulating valve (53) are normally closed regulating valves and are equipped with a return spring. When the thermal expansion drive rod (72) moves away from the heat collection manifold (71), the drive end overcomes the return spring force of the fuel regulating valve (45) to open it, and at the same time, the first transmission member (73) overcomes the return spring force of the air volume regulating valve (53) to open it.

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