Cold rolling mill with multidimensional coordinated control function

Abstract

The present application relates to the technical field of cold rolling mill, especially to a cold rolling mill with multi-dimensional collaborative control function, comprising a rack, upper and lower pressure rollers, upper and lower working rollers, bearing mechanisms, air blowing detection auxiliary mechanisms, fixed-point liquid spraying mechanisms and dynamic support mechanisms; the bearing mechanisms are arranged at both ends of each roller body, the bearing mechanisms comprise damping units and cooling detection units, forming lubricating oil cooling circulation and roller body internal refrigerant cooling circulation, and realizing roller body end cooling, axial movement detection and damping control simultaneously; the air blowing detection auxiliary mechanisms are symmetrically arranged, specific liquid spraying spaces are formed by liquid spraying auxiliary units and cooling liquid is recovered, and high-efficiency cooling and lubrication during rolling is realized by cooperating with the fixed-point liquid spraying mechanisms. The present application integrates multi-dimensional collaborative control, circulating cooling, online detection and dynamic vibration suppression function, effectively solves the problems of low rolling precision, large vibration and low cooling efficiency of the existing cold rolling mill, and improves the quality and production stability of the strip steel.

Description

Technical Field

[0001] This invention relates to the field of cold rolling mill technology, and in particular to a cold rolling mill with multi-dimensional collaborative control function. Background Technology

[0002] Cold rolling mills are core equipment for the precision rolling of metal sheets and strips. Their rolling accuracy, operational stability, and level of automation directly determine the quality of strip products and production efficiency. As cold rolling processes develop towards higher speeds, heavier loads, and higher precision, the technical shortcomings of existing cold rolling mills in areas such as roll system control, cooling and lubrication, vibration suppression, online detection, and energy consumption control are becoming increasingly apparent. Specific deficiencies are as follows: First, the existing roll bearing mechanism of cold rolling mills only has basic support function. During high-speed heavy-load rolling, the rolls are prone to problems such as excessive temperature, axial displacement and vertical displacement loss, which leads to a decrease in the running accuracy of the roll system and directly affects the uniformity of strip thickness and the quality of strip shape. Secondly, during the rolling process, when the cold rolling mill overheats, the roll system is prone to vertical vibration and high-frequency chatter. Especially under high-speed rolling conditions, if the vibration cannot be suppressed quickly, it will cause vibration marks on the surface of the strip steel, accelerate the wear of the rolls, shorten the service life of the equipment, and the existing passive vibration suppression equipment often has a delayed response. Third, most existing cold rolling mills use open spray cooling, which makes it easy for coolant to splash and leak. This method not only consumes a lot of coolant and has low cooling and lubrication efficiency, but also causes environmental pollution on site. Fourth, traditional cold rolling mills do not integrate a unified detection mechanism for strip surface drying, thickness detection, rolling vibration monitoring, and strip breakage early warning. They cannot obtain key data such as strip conveying displacement and rolling vibration amplitude in real time, making it difficult to predict production accidents such as strip breakage in advance. The efficiency of handling accidents after they occur is low, which seriously affects the efficiency of continuous production. Fifth, the existing roll cooling only uses a single coolant circulation method, which has low cooling efficiency. The rolls are prone to thermal deformation when they are in high-temperature conditions for a long time, which further reduces the rolling accuracy. Summary of the Invention

[0003] The present invention aims to solve the above-mentioned defects and provide a cold rolling mill with multi-dimensional collaborative control function.

[0004] To overcome the deficiencies in the prior art, the technical solution adopted by the present invention to solve its technical problem is: a cold rolling mill with multi-dimensional collaborative control function, including a frame, inside which an upper pressure roll, an upper work roll, a lower work roll and a lower pressure roll are arranged sequentially from top to bottom; both ends of the upper pressure roll, the upper work roll, the lower work roll and the lower pressure roll are equipped with a bearing mechanism for roll cooling, roll axial movement detection and roll damping control, and the bearing mechanism is slidably arranged in the frame's archway window in the vertical direction; Four air-blowing detection auxiliary mechanisms are provided, with two mechanisms forming a group. The two groups of air-blowing detection auxiliary mechanisms are symmetrically installed on the frame with the strip as the center. Each mechanism includes a spraying auxiliary unit for assisting in forming a specific spraying space between the strip and the work roll and recovering the coolant, and an air-blowing detection unit for drying the coolant on the surface of the strip, detecting the strip thickness, and detecting rolling vibration. The spraying auxiliary unit is connected to the coolant supply system through a pipeline to transport the recovered coolant into the coolant supply system. A fixed-point spraying mechanism, which is mounted on a frame, is used to spray coolant into a specific spraying space. It is connected to the coolant supply system through pipelines. The lower pressure mechanism is mounted on the frame and is used to drive the upper pressure roller to apply vertically downward rolling pressure; The bearing mechanism includes a damping unit for damping each roller and a cooling detection unit for cooling and lubricating each roller and detecting axial movement of each roller. The cooling detection units are connected in series through pipelines. The first and last cooling detection units are respectively connected to the oil supply mechanism through pipelines, thereby forming a closed loop of lubricating oil cooling to achieve oil circulation cooling at both ends of each roller. The cooling detection units at both ends of the same work roller and pressure roller are respectively connected to the refrigerant circulation mechanism through pipelines to form a closed loop of refrigerant cooling for a single work roller and a single pressure roller.

[0005] As a further improvement, dynamic support mechanisms are provided between the upper and lower adjacent load-bearing mechanisms.

[0006] In a further improvement, the dynamic support mechanism includes a housing, within which a variable fluid retention chamber is constructed. Two piston plates, arranged vertically in parallel and capable of vertical piston-like motion, are disposed within the variable fluid retention chamber. Each piston plate is connected to an external support plate via a guide shaft penetrating the inner wall of the variable fluid retention chamber. A stepped cavity communicating with the variable fluid retention chamber is provided within the housing. A small piston block, capable of piston-like motion, and a pressure spring, which pushes the small piston block to pressurize the magnetorheological fluid within the variable fluid retention chamber, are disposed within the larger diameter cavity of the stepped cavity. A first coil assembly is provided on the housing.

[0007] In a further improvement, the air-blowing detection unit includes a fixed beam with an internal cavity structure, a lifting plate that slides vertically within the cavity of the fixed beam, and a thrust trapezoidal block that can move horizontally within the cavity of the fixed beam. The inclined surface of the thrust trapezoidal block matches the inclined surface constructed at the opposite end of the lifting plate. A tension spring and a rising spring are installed within the cavity of the fixed beam. One end of the tension spring is connected to a preset position on the thrust trapezoidal block, and the other end is connected to a preset position on the inner wall of the cavity of the fixed beam. One end of the rising spring is connected to a preset position on the bottom wall of the cavity of the fixed beam, and the other end is connected to a preset position on the lower end face of the lifting plate, for applying a continuous upward thrust to the lifting plate. A guide jet nozzle is constructed on the lower end face of the fixed beam for spraying airflow in the direction of strip rolling; an air connection port is provided on the side wall of the fixed beam; multiple small-diameter T-shaped rods are vertically inserted into the lifting plate, and a fitting spring is sleeved on the small-diameter T-shaped rod. One end of the fitting spring is connected to a preset position on the upper end face of the lifting plate, and the other end is connected to the end face of the large-diameter T-shaped rod; a plate-shaped wheel is rotatably connected to the free end of the small-diameter T-shaped rod; a lower window is opened on the lower end face of the fixed beam; a jump displacement sensor is provided on the fixed beam, corresponding to the T-shaped rod and located directly above the T-shaped rod, and the detection end of the jump displacement sensor abuts against the upper end face of the T-shaped rod.

[0008] In a further improvement, the spraying auxiliary unit includes a transfer box, on which a preset position is connected to a coolant supply system via a pipeline; both ends of the transfer box are rotatably connected to one end of a large rotating tube, and a small rotating tube is coaxially inserted through the other end of the large rotating tube, with the large rotating tube and the small rotating tube communicating internally; the free ends of the small rotating tube are connected to both ends of an inner roller, and a telescopic spring is connected between the preset position on the large rotating tube and the preset position on the small rotating tube; a confluence cavity and a fan-shaped liquid suction groove communicating with the confluence cavity are opened inside the inner roller, and the confluence cavity is communicating with the small rotating tube; a rolling layer is rotatably arranged on the outer periphery of the inner roller, and the outer periphery of the rolling layer has densely distributed fine holes radially opened.

[0009] In a further improvement, the damping unit includes a U-shaped sliding box, a rotating shaft, a second coil assembly mounted on the sliding box, and a rack mounted on the inner wall of the frame archway window; the rotating shaft is rotatably mounted on the sliding box, and both ends of the rotating shaft are located inside the sliding box; a bevel gear is coaxially mounted on the section of the rotating shaft inside the sliding box, and a gear ring is coaxially mounted on the section outside the sliding box, the gear ring meshing with the rack.

[0010] Further improvements include a cooling detection unit comprising a cooling box, a roller mounting base for connecting to the end of a work roller or pressure roller, and a cooling barrel; the cooling barrel is coaxially connected to the cooling box; two retaining rings are provided inside the cooling box, and the roller mounting base is positioned between the two retaining rings; the cooling barrel has a receiving cavity communicating with the internal space of the cooling box, and a top shaft and a strong spring for pushing the top shaft against the end face of the work roller or pressure roller are provided inside the receiving cavity; a central hole is axially opened on the top shaft, and the central hole is connected to the cooling central shaft hole axially opened on the center of the work roller or pressure roller; the cooling barrel is provided with a refrigerant inlet and outlet for inputting and outputting refrigerant, and a displacement measuring part for detecting changes in the axial displacement of the top shaft; the cooling box is provided with two lubricating oil inlets and outlets for the circulation of lubricating oil.

[0011] In a further improvement, at least three fins are radially arranged on the top shaft in the area located inside the cooling box. The fins can also enhance the cooling effect of the lubricating oil in the cooling box, and the fins also have the function of axially limiting the top shaft.

[0012] The beneficial effects of this invention are as follows: This design, through multi-dimensional collaborative control, significantly improves the rolling accuracy and operational stability of the cold rolling mill. The bearing mechanism integrates damping control, roll cooling, and axial movement detection functions, combined with lubricating oil and internal double closed-loop cooling of the roll, effectively preventing roll thermal deformation and displacement, ensuring precise operation of the roll system. The air-blowing detection auxiliary mechanism, in conjunction with the work roll and strip, forms a specific spray space, combined with fixed-point spraying and closed-loop coolant recovery, reducing coolant splashing waste, improving cooling and lubrication efficiency, and being more energy-efficient and environmentally friendly. The dynamic support mechanism can quickly trigger rigid support when the mill vibrates, suppressing roll system vibration in real time, preventing strip from developing vibration marks, and extending equipment service life. This design achieves integrated collaborative operation of roll system control, cooling and lubrication, online detection, and dynamic vibration suppression, solving the problems of low accuracy, large vibration, inefficient cooling, and insufficient intelligence in traditional cold rolling mills, significantly improving strip product quality and production continuity. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the left-side structure of the present invention; Figure 3 This is a schematic diagram of the left-side cross-sectional structure of the present invention; Figure 4 This is a front view schematic diagram of the air blowing detection auxiliary mechanism in this invention; Figure 5 yes Figure 3 Enlarged cross-sectional view of section A in the middle; Figure 6 This is a schematic diagram of the air blowing detection unit in this invention; Figure 7 This is a schematic diagram of the internal structure of the cooling detection unit in this invention; Figure 8 This is a partial cross-sectional view of the cooling detection unit in this invention; Figure 9 This is a schematic diagram of the front cross-sectional structure of the dynamic support mechanism in this invention; Figure 10 This is a schematic diagram of the front view of the dynamic support mechanism in this invention; Figure 11 This is a schematic diagram of the front cross-sectional structure of the damping unit in this invention; In the figure, 1-frame, 2-pressing mechanism, 3-air blowing detection auxiliary mechanism, 4-bearing mechanism, 5-upper pressure roller, 6-upper working roller, 7-fixed point spraying mechanism, 8-lower working roller, 9-lower pressure roller, 10-dynamic support mechanism; 301 - Air blowing detection unit; 302 - Liquid spraying auxiliary unit; 3011-Guide jet nozzle, 3012-Air connection port, 3013-Tension spring, 3014-Thrust trapezoidal block, 3015-Fixed beam, 3016-Drop displacement sensor, 3017-T-shaped rod, 3018-Lifting plate, 3019-Lower window, 30110-Sheet wheel, 30111-Fit spring, 30112-Rising spring; 3021-Rotating small tube, 3022-Telescopic spring, 3023-Rotating large tube, 3024-Transfer box, 3025-Inner roller, 3026-Rolling layer, 3027-Manifold cavity, 3028-Fan-shaped liquid suction groove; 401 - Damping unit, 402 - Cooling detection unit; 4011-Rack, 4012-Bevel gear, 4013-Sliding box, 4014-Gear ring, 4015-Second coil group, 4016-Shaft; 4021-Roller mounting base, 4022-Fin plate, 4023-Displacement measuring unit, 4024-Refrigerant inlet and outlet, 4025-Cooling tank, 4026-Retaining ring, 4027-Top shaft, 4028-Cooling box, 4029-Lubricating oil inlet and outlet, 40210-Strong spring, 40211-Groove, 40212-Cooling shaft hole, 40213-Center hole, 40214-Receiving cavity; 1001-Box body, 1002-Compression spring, 1003-Small piston block, 1004-Guide shaft, 1005-Support plate, 1006-Piston plate, 1007-Stepped cavity, 1008-Variable fluid storage cavity, 1009-First coil group. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] refer to Figure 1 , Figure 2 and Figure 3 A cold rolling mill with multi-dimensional collaborative control function includes a frame 1, inside which an upper pressure roll 5, an upper work roll 6, a lower work roll 8, and a lower pressure roll 9 are arranged sequentially from top to bottom; each end of the upper pressure roll 5, upper work roll 6, lower work roll 8, and lower pressure roll 9 is equipped with a bearing mechanism 4 for roll cooling, roll axial movement detection, and roll damping control. The bearing mechanism 4 is slidably disposed in the archway window of the frame 1 in the vertical direction to ensure that the upper pressure roll 5, upper work roll 6, lower work roll 8, and lower pressure roll 9 can move flexibly up and down in the vertical direction; Four air-blowing detection auxiliary mechanisms 3 are provided, with two groups of two. The two groups of air-blowing detection auxiliary mechanisms 3 are symmetrically installed on the frame 1 with the strip as the center. Each group includes a spraying auxiliary unit 302 for assisting in forming a specific spraying space between the strip and the work roll and recovering the coolant, and an air-blowing detection unit 301 for drying the coolant on the surface of the strip, detecting the strip thickness, and detecting rolling vibration. The spraying auxiliary unit 302 is connected to the coolant supply system through a pipeline and is used to transport the recovered coolant into the coolant supply system. The fixed-point spraying mechanism 7 is installed on the frame 1 and is used to spray coolant into a specific spraying space to achieve cooling and lubrication during the cold rolling process. It is connected to the coolant supply system through pipelines, and the coolant supply system supplies coolant to it. The lower pressure mechanism 2 is mounted on the frame 1 and is used to drive the upper pressure roller 5 to apply vertically downward rolling pressure; The bearing mechanism 4 includes a damping unit 401 for damping each roller and a cooling detection unit 402 for cooling and lubricating each roller and detecting axial movement of each roller. The cooling detection units 402 are connected in series through pipelines. The first cooling detection unit 402 and the last cooling detection unit 402 are respectively connected to the oil supply mechanism through pipelines, thereby forming a closed loop of lubricating oil cooling to achieve circulating cooling of oil at both ends of each roller. The cooling detection units 402 at both ends of the same work roller and pressure roller are respectively connected to the refrigerant circulation mechanism through pipelines to form a closed loop of refrigerant cooling for a single work roller and a single pressure roller, so that the refrigerant flows through the interior of the pressure roller and the work roller, thereby achieving circulating cooling of the roller.

[0017] For specific embodiments, please refer to Figure 9 and Figure 10 A dynamic support mechanism 10 is provided between each of the upper and lower adjacent bearing mechanisms 4. When the cold rolling mill is working normally, the dynamic support mechanism 10 has no rigid support function. When the cold rolling mill is working abnormally and abnormal vibration occurs, the dynamic support mechanism 10 is triggered and forms a rigid support between the bearing mechanisms 4 to suppress the vibration of the work roll and the pressure roll.

[0018] The dynamic support mechanism 10 includes a housing 1001, within which a variable fluid retention chamber 1008 is constructed. Two piston plates 1006, arranged vertically in parallel and capable of vertical piston-like motion, are disposed within the variable fluid retention chamber 1008. Each piston plate 1006 is connected to an external support plate 1005 via a guide shaft 1004 penetrating the inner wall of the variable fluid retention chamber 1008. A stepped cavity 1007, communicating with the variable fluid retention chamber 1008, is formed within the housing 1001. A small piston-like device is disposed within the larger diameter cavity of the stepped cavity 1007. The piston block 1003 and the pressure spring 1002 that pushes the small piston block 1003 to pressurize the magnetorheological fluid in the variable fluid storage cavity 1008 indirectly push the support plate 1005 to pre-tighten the upper and lower adjacent bearing mechanisms 4 through the pressure spring 1002; the box body 1001 is provided with a first coil group 1009. When the first coil group 1009 is energized to generate a magnetic field, it will magnetize the magnetorheological fluid in the area formed between the variable fluid storage cavity 1008 and the piston plate 1006, thereby achieving rigid support for the upper and lower adjacent bearing mechanisms 4 and avoiding vibration marks on the surface of the strip when the rolling mill vibrates.

[0019] For specific embodiments, please refer to Figure 4 and Figure 6The air blowing detection unit 301 includes a fixed beam 3015 with an internal cavity structure, a lifting plate 3018 that slides vertically within the cavity of the fixed beam 3015, and a thrust trapezoidal block 3014 that can move horizontally within the cavity of the fixed beam 3015. The inclined surface of the thrust trapezoidal block 3014 matches the inclined surface constructed at the opposite end of the lifting plate 3018. A tension spring 3013 and a rising spring 30112 are disposed within the cavity of the fixed beam 3015. One end of the tension spring 3013 is connected to a preset position on the thrust trapezoidal block 3014. The other end is connected to a preset position on the inner wall of the cavity of the fixed beam 3015, used to pull the thrust trapezoidal block 3014 away from the lifting plate 3018; one end of the rising spring 30112 is connected to a preset position on the bottom wall of the inner cavity of the fixed beam 3015, and the other end is connected to a preset position on the lower end face of the lifting plate 3018, used to apply a continuous upward thrust to the lifting plate 3018; a guide jet nozzle 3011 is constructed on the lower end face of the fixed beam 3015, used to spray airflow in the direction of strip rolling, physically cooling the strip while drying the surface coolant, and the residual heat of the strip after rolling can still be used to... To accelerate the evaporation of coolant; an air connection port 3012 is provided on the side wall of the fixed beam 3015 for air intake, thereby controlling the movement of the thrust trapezoidal block 3014; multiple small-diameter T-shaped rods 3017 are vertically inserted through the lifting plate 3018, and a fitting spring 30111 is sleeved on the small-diameter T-shaped rod 3017. One end of the fitting spring 30111 is connected to a preset position on the upper surface of the lifting plate 3018, and the other end is connected to the end face of the large-diameter T-shaped rod 3017; the free end of the small-diameter T-shaped rod 3017 is rotatably connected to a plate-shaped wheel 30110, through which... The plate-shaped wheel 30110 contacts the strip steel, and the plate-shaped wheel 30110 rotates while the strip steel moves; a lower window 3019 is opened on the lower end surface of the fixed beam 3015 for the extension and retraction of the plate-shaped wheel 30110; the fixed beam 3015 is provided with a jump displacement sensor 3016 corresponding to the T-shaped rod 3017 and located directly above the T-shaped rod 3017. The detection end of the jump displacement sensor 3016 abuts against the upper end surface of the T-shaped rod 3017 to detect the displacement change of the T-shaped rod 3017, and thus detect the vertical displacement change during strip steel conveying.

[0020] In the non-working state, the thrust trapezoidal block 3014 moves to the right limit position of the inner cavity of the fixed beam 3015 under the elastic force of the tension spring 3013 and blocks the guide air nozzle 3011. The rising spring 30112 pushes the lifting plate 3018 to the highest position. At this time, the plate wheel 30110 is hidden in the inner cavity of the fixed beam 3015. In the working state, the bidirectional air supply system is connected to the air connection port 3012 through the pipeline, supplying air to the inner cavity of the fixed beam 3015 to form high pressure, pushing the thrust trapezoidal block 3014 to move to the left. At this time, the guide air nozzle 3011 gradually opens and sprays out high-pressure airflow to cool and dry the surface of the strip steel. At the same time, the thrust trapezoidal block 3014 drives the lifting plate 3018 to move down through the inclined guide, and drives the plate wheel 30110 and the T-shaped... The rod 3017 moves downwards together until the plate wheel 30110 contacts the strip surface. Under the elastic force of the contact spring 30111, the contact spring 30111 tightens the T-shaped rod 3017, making the plate wheel 30110 pressurized and tightly attached to the strip. This achieves flexible contact, and the plate wheel 30110 can also guide the blown cooling airflow to improve the drying effect. During this process, the jump displacement sensor 3016 acquires the vertical displacement change data of the T-shaped rod 3017. With the cooperation of the upper and lower air blowing detection units 301, the strip thickness can be detected and the mill vibration can be monitored. Abnormal displacement data can be used to determine whether strip breakage has occurred. Multiple plate wheels 30110 can detect the strip thickness at different positions to ensure that the output strip has a consistent thickness.

[0021] For specific embodiments, please refer to Figure 4 and Figure 5 The spraying auxiliary unit 302 includes a transfer box 3024, which is pre-positioned and connected to a coolant supply system via a pipeline. Both ends of the transfer box 3024 are rotatably connected to one end of a large rotating tube 3023. A small rotating tube 3021 coaxially passes through the other end of the large rotating tube 3023, and the large rotating tube 3023 and the small rotating tube 3021 are internally connected. The free ends of the small rotating tube 3021 are connected to both ends of an inner roller 3025. A pre-positioned... A telescopic spring 3022 is connected between the position and a preset position on the rotating tube 3021; ​​the inner roller 3025 has a manifold 3027 and a fan-shaped liquid suction groove 3028 communicating with the manifold 3027, and the manifold 3027 is communicating with the rotating tube 3021; ​​a rolling layer 3026 is rotatably provided on the outer periphery of the inner roller 3025, and the rolling layer 3026 has densely distributed fine holes in the radial direction on the outer periphery. The rolling layer 3026 can be made of ultra-high molecular weight polyethylene, which can minimize friction.

[0022] Specifically, the telescopic spring 3022 pushes the rotating small tube 3021 out of the rotating large tube 3023 through elastic force, thereby driving the inner roller 3025 and the rolling layer 3026 to engage between the work roller and the strip steel, so that a specific spraying space is formed between the rolling layer 3026, the work roller and the strip steel. The fixed-point spraying mechanism 7 sprays coolant to both ends of the space simultaneously to cool and lubricate. This design can effectively prevent coolant splashing and greatly reduce coolant consumption. The coolant in the specific spraying space will enter the confluence chamber 3027 through the fine holes and fan-shaped suction groove 3028 on the rolling layer 3026, and then be fed into the transfer box 3024 through the rotating small tube 3021 and the rotating large tube 3023 in sequence, and finally flow back to the coolant supply system to complete the coolant circulation and recycling.

[0023] For specific embodiments, please refer to Figure 11 The damping unit 401 includes a U-shaped sliding box 4013, a rotating shaft 4016, a second coil group 4015 disposed on the sliding box 4013, and a rack 4011 disposed on the inner wall of the archway window of the frame 1; the rotating shaft 4016 is rotatably mounted on the sliding box 4013, and both ends of the rotating shaft 4016 are located inside the sliding box 4013; a bevel gear 4012 is coaxially disposed on the section of the rotating shaft 4016 located inside the sliding box 4013, and a bevel gear 4012 is disposed on the section located outside the sliding box 4013. A gear ring 4014 is coaxially arranged, which meshes with a rack 4011. The sliding box 4013 is filled with magnetorheological fluid. During the up-and-down movement of the sliding box 4013, the gear ring 4014 and the rack 4011 remain meshed. When the cold rolling mill vibrates, the second coil group 4015 is energized to generate a magnetic field, which magnetizes the magnetorheological fluid in the sliding box 4013, restricting the rotation of the bevel gear 4012, thereby damping the pressure roller and the work roller, preventing the appearance of strip vibration marks, and achieving rapid response.

[0024] For specific embodiments, please refer to Figure 7 and Figure 8The cooling detection unit 402 includes a cooling box 4028, a roller mounting base 4021 for connecting to the end of a work roller or pressure roller, and a cooling tank 4025; the cooling tank 4025 is coaxially connected to the cooling box 4028; two retaining rings 4026 are provided inside the cooling box 4028, and the roller mounting base 4021 is arranged between the two retaining rings 4026, with the retaining rings 4026 restricting the axial movement of the roller mounting base 4021; a gap is left between the roller mounting base 4021 and the inner wall of the cooling box 4028. The cooling tank 4025 has a space for holding lubricating oil; the cooling tank 4025 has a receiving cavity 40214 that communicates with the internal space of the cooling box 4028. The receiving cavity 40214 contains a top shaft 4027 and a strong spring 40210 for pushing the top shaft 4027 against the end faces of the work roller and pressure roller. The top shaft 4027 has a central hole 40213 axially formed, which connects with the cooling shaft hole 40212 axially formed on the work roller and pressure roller, allowing the coolant to... The fluid flows through the inside of the roller body; the cooling tank 4025 is provided with a refrigerant inlet / outlet 4024 and a displacement measuring unit 4023. The refrigerant inlet / outlet 4024 is used for inputting and outputting refrigerant, and the displacement measuring unit 4023 is used to detect the axial displacement change of the top shaft 4027 and determine whether the work roller and pressure roller have moved axially; the cooling box 4028 is provided with two lubricating oil inlet / outlet 4029 for the inlet and outlet circulation of lubricating oil; in a further embodiment, the end of the top shaft 4027 is a tapered structure, and the work roller and pressure roller... A groove 40211 matching the end structure of the top shaft 4027 is opened on the end face of the force roller to ensure precise docking between the top shaft 4027 and the end face of the roller body, and to prevent oil from entering the cooling shaft hole 40212 due to movement; in a further embodiment, at least three fins 4022 are radially arranged on the area of ​​the top shaft 4027 located in the cooling box 4028. The fins 4022 can also enhance the cooling effect of the lubricating oil in the cooling box 4028, and the fins 4022 also have the function of axially limiting the top shaft 4027.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cold rolling mill with multi-dimensional collaborative control function, characterized in that, The machine includes a frame (1), inside which an upper pressure roller (5), an upper working roller (6), a lower working roller (8) and a lower pressure roller (9) are arranged sequentially from top to bottom; at both ends of the upper pressure roller (5), the upper working roller (6), the lower working roller (8) and the lower pressure roller (9) are mounted a bearing mechanism (4) for roller cooling, roller axial movement detection and roller damping control, and the bearing mechanism (4) is slidably arranged in the archway window of the frame (1) in the vertical direction; Four air-blowing detection auxiliary mechanisms (3) are provided in total, and two are arranged in a group. The two groups of air-blowing detection auxiliary mechanisms (3) are symmetrically installed on the frame (1) with the strip as the center. It includes a spraying auxiliary unit (302) for assisting in forming a specific spraying space between the strip and the work roll and recovering the coolant, and an air-blowing detection unit (301) for drying the coolant on the surface of the strip, detecting the strip thickness and rolling vibration. The spraying auxiliary unit (302) is connected to the coolant supply system through a pipeline. The fixed-point spraying mechanism (7) is mounted on the frame (1) and is used to spray coolant into a specific spraying space. It is connected to the coolant supply system through a pipeline. The pressing mechanism (2) is mounted on the frame (1) and is used to drive the upper pressure roller (5) to apply vertically downward rolling pressure; The bearing mechanism (4) includes a damping unit (401) for damping each roller and a cooling detection unit (402) for cooling and lubricating each roller and detecting the axial movement of each roller. The cooling detection units (402) are connected in series through pipelines. The first cooling detection unit (402) and the last cooling detection unit (402) are respectively connected to the oil supply mechanism through pipelines, thereby forming a lubricating oil cooling closed loop. The cooling detection units (402) at both ends of the same work roller and pressure roller are respectively connected to the refrigerant circulation mechanism through pipelines, forming a refrigerant cooling closed loop for a single work roller and a single pressure roller. A dynamic support mechanism (10) is provided between each of the upper and lower adjacent bearing mechanisms (4). The dynamic support mechanism (10) includes a housing (1001), in which a variable fluid retention chamber (1008) is constructed. Two piston plates (1006) are arranged in parallel vertically within the variable fluid retention chamber (1008) and can move vertically like pistons. Each piston plate (1006) is connected to an external support plate (1005) via a guide shaft (1004) that penetrates the inner wall of the variable fluid retention chamber (1008). A stepped cavity (1007) communicating with the variable fluid retention chamber (1008) is opened in the housing (1001). A small piston block (1003) that moves like a piston and a pressure spring (1002) that pushes the small piston block (1003) to pressurize the magnetorheological fluid in the variable fluid retention chamber (1008) are arranged in the large-diameter cavity of the stepped cavity (1007). A first coil group (1009) is arranged on the housing (1001).

2. A cold rolling mill with multi-dimensional collaborative control function as described in claim 1, characterized in that: The air blowing detection unit (301) includes a fixed beam (3015) with an internal cavity structure, a lifting plate (3018) that slides vertically within the cavity of the fixed beam (3015), and a thrust trapezoidal block (3014) that can move horizontally within the cavity of the fixed beam (3015). The inclined surface of the thrust trapezoidal block (3014) matches the inclined surface constructed at the opposite end of the lifting plate (3018). A tension spring (3013) is installed within the cavity of the fixed beam (3015). The tension spring (3013) is connected at one end to a preset position on the thrust trapezoidal block (3014) and at the other end to a preset position on the inner wall of the cavity of the fixed beam (3015); the lifting spring (30112) is connected at one end to a preset position on the bottom wall of the inner cavity of the fixed beam (3015) and at the other end to a preset position on the lower end face of the lifting plate (3018), for applying a continuous upward thrust to the lifting plate (3018); the lower end of the fixed beam (3015) A guide jet nozzle (3011) is constructed on the surface for ejecting airflow in the direction of strip rolling; an air connection port (3012) is provided on the side wall of the fixed beam (3015); multiple small-diameter rods of T-shaped rods (3017) are vertically inserted into the lifting plate (3018), and a fitting spring (30111) is sleeved on the small-diameter rod of the T-shaped rod (3017). One end of the fitting spring (30111) is connected to a preset position on the upper surface of the lifting plate (3018), and the other end is connected to the T-shaped rod (30111). 3017) The large diameter rod end face is connected; the small diameter rod free end of the T-shaped rod (3017) is rotatably connected to the plate wheel (30110); the lower end face of the fixed beam (3015) is opened with a lower window (3019); the fixed beam (3015) is provided with a jump displacement sensor (3016) corresponding to the T-shaped rod (3017) and located directly above the T-shaped rod (3017), and the detection end of the jump displacement sensor (3016) abuts against the upper end face of the T-shaped rod (3017).

3. A cold rolling mill with multi-dimensional collaborative control function as described in claim 1, characterized in that: The spraying auxiliary unit (302) includes a transfer box (3024), which is connected to the coolant supply system via a pipeline at a preset position on the transfer box (3024); both ends of the transfer box (3024) are rotatably connected to one end of a large rotating tube (3023), and the other end of the large rotating tube (3023) is coaxially connected to a small rotating tube (3021), with the large rotating tube (3023) and the small rotating tube (3021) communicating internally; the free end of the small rotating tube (3021) is connected to both ends of the inner roller (3025). A telescopic spring (3022) is connected between a preset position on the large rotating tube (3023) and a preset position on the small rotating tube (3021); a flow-collecting cavity (3027) and a fan-shaped liquid-absorbing groove (3028) communicating with the flow-collecting cavity (3027) are provided inside the inner roller (3025), and the flow-collecting cavity (3027) is communicating with the small rotating tube (3021); a rolling layer (3026) is rotatably provided on the outer periphery of the inner roller (3025), and the outer periphery of the rolling layer (3026) is radially provided with densely distributed fine holes.

4. A cold rolling mill with multi-dimensional collaborative control function as described in claim 1, characterized in that: The damping unit (401) includes a U-shaped sliding box (4013), a rotating shaft (4016), a second coil group (4015) disposed on the sliding box (4013), and a rack (4011) disposed on the inner wall of the archway window of the frame (1); the rotating shaft (4016) is rotatably mounted on the sliding box (4013), and both ends of the rotating shaft (4016) are located inside the sliding box (4013); a bevel gear (4012) is coaxially disposed on the section of the rotating shaft (4016) located inside the sliding box (4013), and a gear ring (4014) is coaxially disposed on the section located outside the sliding box (4013), and the gear ring (4014) meshes with the rack (4011).

5. A cold rolling mill with multi-dimensional collaborative control function as described in claim 1, characterized in that: The cooling detection unit (402) includes a cooling box (4028), a roller mounting base (4021) for connecting to the end of a work roller or pressure roller, and a cooling barrel (4025); the cooling barrel (4025) is coaxially connected to the cooling box (4028); two retaining rings (4026) are provided inside the cooling box (4028), and the roller mounting base (4021) is arranged between the two retaining rings (4026); the cooling barrel (4025) has a receiving cavity (40214) communicating with the internal space of the cooling box (4028), and a top shaft (4027) is provided inside the receiving cavity (40214). The top shaft (4027) is provided with a strong spring (40210) for pushing the top shaft (4027) to abut against the end face of the work roller and pressure roller; the top shaft (4027) is provided with a central hole (40213) in the center axis, and the central hole (40213) is connected to the cooling central shaft hole (40212) in the center axis of the work roller and pressure roller; the cooling tank (4025) is provided with a refrigerant inlet and outlet (4024) for inputting and outputting refrigerant and a displacement measuring part (4023) for detecting the axial displacement change of the top shaft (4027); the cooling box (4028) is provided with two lubricating oil inlet and outlet (4029).

6. A cold rolling mill with multi-dimensional collaborative control function as described in claim 5, characterized in that: At least three fins (4022) are radially arranged on the top shaft (4027) and in the area located within the cooling box (4028).

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