Cold-rolled steel strip rolling device with defect detection function

Abstract

The invention discloses a cold-rolled steel strip rolling device with a defect detection function, and relates to the technical field of rolling devices.The rolling device comprises a rack, a rolling assembly, a defect detection mechanism, a pressure adjusting mechanism and a cooling and lubricating mechanism, the rolling assembly is fixedly connected with the rack, the defect detection mechanism is located below the rolling assembly, and the pressure adjusting mechanism is located below the rolling assembly; the pressure adjusting mechanism is in fastening connection with the rolling assembly, the defect detecting mechanism is communicated with the pressure adjusting mechanism, the cooling and lubricating mechanism and the rolling assembly, the defect detecting mechanism is located below the rolling assembly and identifies thickness defects, the pressure adjusting mechanism is in fastening connection with the rolling assembly to control the thickness of a steel belt, and the cooling and lubricating mechanism is communicated with the rolling assembly. Lubricating oil and cooling liquid are conveyed to the steel belt through the lubricating pipeline and the cooling pipeline, friction and temperature are reduced, and the stability of the rolling process is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of rolling devices, in particular to a cold-rolled steel strip rolling device with a defect detection function. Background Art

[0002] With the continuous development of industrialization, the demand for cold-rolled steel strip, as a key material in the manufacturing industry, is growing. The development of cold rolling technology has played an important role in improving the quality of steel strip, reducing production costs and improving production efficiency. Modern industry has put forward higher requirements on the thickness accuracy, surface quality and mechanical properties of steel strip, which has promoted the continuous upgrading and innovation of cold-rolled steel strip rolling equipment. In the future, intelligence, automation and high precision will become the main trends in the development of cold rolling equipment.

[0003] At present, the cold-rolled steel strip rolling devices commonly used in the market are mainly composed of a frame, a rolling assembly, a pressure regulating mechanism and a cooling and lubrication system. These devices usually adopt a fixed roller structure and adjust the rolling pressure by mechanical or hydraulic means. The cooling and lubrication system generally uses a simple spraying method to cool and lubricate the roller. However, these devices lack advanced defect detection mechanisms and mainly rely on manual sampling or simple thickness measurement, which cannot achieve real-time monitoring of the quality of the steel strip. In addition, the response speed and accuracy of the pressure regulating mechanism are limited, making it difficult to meet the requirements of high-precision rolling.

[0004] The deficiencies of the existing technology are mainly manifested in the following aspects: First, there is a lack of real-time, high-precision defect detection mechanism, which cannot timely identify the thickness deviation and surface defects of the steel strip, resulting in unstable product quality and high scrap rate. Secondly, the control accuracy and response speed of the pressure regulating mechanism are insufficient, and the rolling pressure cannot be quickly adjusted according to the real-time feedback data, which affects the rolling accuracy. Thirdly, the design of the cooling and lubrication system is not optimized enough, and the cooling and lubrication effects are not good. It is impossible to effectively reduce the temperature of the rollers and roller shafts, resulting in equipment overheating and wear, and shortening the service life of the equipment. In addition, the existing device lacks a flexible operating mechanism, such as the design of the opening and closing clamps, which makes the spraying of the lubricating liquid and the control of the roller pressure not precise enough, affecting the further improvement of production efficiency and product quality. Therefore, those skilled in the art provide a cold-rolled steel strip rolling device with a defect detection function. Summary of the invention

[0005] The object of the present invention is to provide a cold-rolled steel strip rolling device with a defect detection function to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: The rolling device includes a frame, a rolling assembly, a defect detection mechanism, a pressure regulating mechanism and a cooling and lubricating mechanism. The rolling assembly and the frame are tightly connected, the defect detection mechanism is located below the rolling assembly, the pressure regulating mechanism and the rolling assembly are tightly connected, and the defect detection mechanism and the pressure regulating mechanism, the cooling and lubricating mechanism and the rolling assembly are connected.

[0007] By adopting the above technical scheme, the defect detection mechanism is located below the rolling assembly to identify thickness defects; the pressure regulating mechanism is tightly connected to the rolling assembly, and is connected to the upper roller through a hydraulic cylinder. The telescopic action of the hydraulic cylinder directly affects the pressure of the upper roller, thereby realizing the control of the thickness of the steel strip; the cooling and lubricating mechanism is connected to the rolling assembly, and the lubricating oil and coolant are delivered to the roller surface through the lubrication pipeline and the cooling pipeline to reduce friction and temperature and ensure the stability of the rolling process. The steel strip enters the rolling assembly from the entrance and is rolled into the required thickness and width under the pressure of the upper and lower rollers; the pressure regulating mechanism adjusts the pressure of the hydraulic cylinder in real time according to the data fed back by the sensor to ensure the rolling accuracy; during the rolling process, the cooling and lubricating mechanism continuously provides lubrication and cooling for the roller to prevent overheating and wear; the rolled steel strip passes through the defect detection mechanism for inspection, which improves product quality, reduces scrap rate, improves production efficiency, and extends the service life of the equipment.

[0008] Furthermore, the rolling assembly includes an upper roller, a lower roller, a roller shaft, a roller block, a roller motor and a roller hydraulic cylinder. The upper roller and the lower roller are respectively mounted on the roller shaft, the roller shaft is connected to the cooling and lubrication mechanism, the roller shaft and the roller block are rotatably connected, the roller motor and the roller block are tightly connected, the roller motor and the roller shaft are transmission-connected, the roller hydraulic cylinder and the frame are tightly connected, and the roller hydraulic cylinder and the roller block are transmission-connected.

[0009] By adopting the above technical scheme, the upper roller and the lower roller are respectively installed on the roller shaft, the roller shaft is connected to the cooling and lubrication mechanism, and a channel is provided inside for conveying coolant and lubricant to ensure that the roller maintains a suitable temperature and lubrication state during operation. The roller shaft is rotatably connected to the roller block, specifically, the roller shaft is installed on the roller block through a bearing to achieve smooth rotation of the roller, the roller motor is fixedly installed on the roller block, and the output shaft of the roller motor drives the roller shaft and the roller to rotate, and the roller hydraulic cylinder is fixedly installed on the frame, and its piston rod is transmission-connected to the roller block, specifically, the piston rod pushes the roller block, and the pressure applied by the roller block and the roller is adjusted through the telescopic movement of the hydraulic cylinder. , start the roller motor to drive the upper roller and the lower roller to rotate, the steel strip enters between the rollers from the entrance, and is rolled into the required thickness and shape under the pressure applied by the roller hydraulic cylinder; at the same time, the cooling and lubrication mechanism provides coolant and lubricant to the roller through the channel in the roller shaft, reduces friction and temperature, and prevents overheating and wear. The rotational connection between the roller shaft and the roller block ensures the stable operation of the roller. The roller hydraulic cylinder adjusts the roller pressure in real time through the transmission connection to achieve precise control of the rolling process. Through the above-mentioned structural design and working principle, the present invention can achieve efficient and precise steel strip rolling, improve product quality, reduce energy consumption, and extend the service life of the equipment.

[0010] Furthermore, there are two roller blocks, and the angle between the two roller blocks is 90 degrees. A temperature control groove is provided on the roller shaft, and a lubrication groove is provided on the roller shaft. The temperature control groove is spiral, and the lubrication groove is spiral. The temperature control groove and the lubrication groove are arranged alternately, and the temperature control groove is connected to the cooling and lubrication mechanism, and the lubrication groove is connected to the cooling and lubrication mechanism.

[0011] By adopting the above technical solution, the roller shaft is provided with spiral temperature control grooves and lubrication grooves, which are arranged alternately. The temperature control groove is connected to the cooling and lubrication mechanism. The coolant is transported through the spiral channel of the temperature control groove and flows evenly along the roller shaft to achieve effective temperature control of the roller shaft and the roller. The lubrication groove is also connected to the cooling and lubrication mechanism. The lubricating oil is transported to the roller shaft through the spiral channel of the lubrication groove. During the working process, the coolant and the lubricating oil flow alternately along their respective spiral grooves to ensure the uniformity of the temperature and lubrication of the roller shaft and avoid local overheating or wear. The roller block is rotatably connected to the roller shaft through the bearing. The bearing is installed between the roller shaft and the roller block, so that the roller block can rotate with the roller shaft while maintaining its own stability. Since the two roller blocks are arranged at an angle of 90 degrees, the steel strip can be rolled in multiple directions, which enhances the uniformity of rolling and the surface quality of the product.

[0012] Furthermore, the defect detection mechanism includes an anti-skewness wheel, a detection frame, a pullback cylinder, a pullback driven wheel, a pullback block, an infrared thermal imager and a laser thickness gauge. The anti-skewness wheel and the detection frame are rotatably connected, the pullback cylinder and the detection frame are tightly connected, the pullback cylinder and the pullback block are transmission-connected, the pullback driven wheel and the pullback block are rotatably connected, the infrared thermal imager and the detection frame are tightly connected, the laser thickness gauge and the detection frame are tightly connected, and the anti-skewness wheel includes a wheel body, an expansion membrane, a first elastic member and an air pump. An expansion chamber is provided on the wheel body, the expansion chamber is located on both sides of the wheel body, the expansion membrane is tightly connected to the wheel body, the first elastic member is located in the expansion chamber, the first elastic member is tightly connected to the wheel body, the first elastic member is tightly connected to the expansion membrane, the air pump is tightly connected to the wheel body, and the air pump and the expansion chamber are connected.

[0013] By adopting the above technical solution, the anti-deviation wheel is rotatably connected with the detection frame, and can flexibly adjust its position with the movement of the steel belt to prevent the steel belt from running off. The pull-back cylinder is fixedly installed on the detection frame, and its piston rod is transmission-connected with the pull-back block, specifically, the piston rod pushes or pulls the pull-back block to adjust the position of the pull-back driven wheel. The pull-back driven wheel is rotatably connected with the pull-back block, and is installed through a bearing so that it can rotate freely and maintain good contact with the steel belt. The infrared thermal imager and the laser thickness gauge are both fixedly installed on the detection frame, and are respectively used to monitor the surface temperature distribution and thickness change of the steel belt in real time. The anti-deviation wheel includes a wheel body, an expansion membrane, a first elastic member and an air pump. An expansion cavity is provided on the wheel body, which is located on both sides of the wheel body to form a symmetrical structure. The expansion membrane is fixedly connected to the wheel body to close the outer opening of the expansion cavity. The first elastic member (such as a spring) is located in the expansion cavity, one end of which is fixedly connected to the inner wall of the wheel body, and the other end is fixedly connected to the inner side of the expansion membrane to provide a reset elastic force. The air pump is fixedly installed on the wheel body and communicated with the expansion cavity through a pipeline. When working, the air pump inflates the expansion chamber, pushing the expansion membrane outward, overcoming the elastic force of the first elastic member, making the expansion membrane contact the side of the steel belt, increasing the lateral support force of the anti-deviation wheel, and preventing the steel belt from running off. When it is necessary to reduce the pressure or stop working, the air pump stops supplying air, and the first elastic member restores the expansion membrane to its original position. After the steel belt is rolled by the rolling assembly, it enters the defect detection mechanism area. The anti-deviation wheel maintains the correct direction of travel of the steel belt through the adjustment of the expansion membrane. The infrared thermal imager monitors the surface temperature of the steel strip in real time and detects possible abnormal temperature areas; the laser thickness gauge measures the thickness of the steel strip to ensure that it is within the qualified range. If the steel strip is detected to be deviated or the size is unqualified, the pull-back cylinder is started, and the piston rod drives the pull-back block to move, driving the pull-back driven wheel to adjust the position and apply a correction force to the steel strip. Through the combination of mechanical and pneumatic devices, the position and quality of the steel strip can be monitored and adjusted in real time. The anti-deviation wheel uses the cooperation of the air pump and the expansion membrane to dynamically adjust the lateral pressure; the pull-back cylinder is connected to the pull-back block and the pull-back driven wheel through a transmission, and pulls back in time when uneven thickness is detected. The effect achieved is to effectively prevent the steel strip from running off during high-speed operation, ensure the dimensional accuracy of the steel strip, improve the product qualification rate, and reduce production losses.

[0014] Furthermore, the cooling and lubrication mechanism includes a lubrication pump, a cooling pump, a lubrication pipe, a cooling pipe, a rotating ring, a distance sensor and a spray nozzle. The lubrication pump is firmly connected to the frame, the cooling pump is firmly connected to the frame, the cooling pipe is connected to the temperature control tank, the lubrication pipe is connected to the lubrication tank, the cooling pipe is firmly connected to the rotating ring, the lubrication pipe is firmly connected to the rotating ring, the rotating ring is rotatably connected to the roller shaft, the spray nozzle is firmly connected to the roller shaft, and is connected to the roller shaft, and the distance sensor is firmly connected to the roller shaft.

[0015] By adopting the above technical solution, the lubrication pump and the cooling pump are fixedly installed on the frame to provide power for the delivery of lubricating oil and coolant. The cooling pipeline is connected with the temperature control groove on the roller shaft. The coolant enters the spiral temperature control groove through the cooling pipeline and circulates inside the roller shaft to reduce the temperature of the roller shaft and the roller. The lubrication pipeline is connected with the lubrication groove on the roller shaft. The lubricating oil enters the spiral lubrication groove through the lubrication pipeline to provide continuous lubrication for the rotating connection between the roller shaft and the roller block, reducing friction and wear. The cooling pipeline and the lubrication pipeline are both tightly connected with the rotating ring. The rotating ring is rotatably connected with the roller shaft through the bearing, allowing the pipeline to rotate synchronously with the rotation of the roller shaft. , to prevent the pipeline from being entangled or broken, the spray nozzle is fixedly installed on the roller and connected to the internal channel of the roller, which can spray lubricating oil onto the steel strip to enhance the cooling and lubrication effect. The distance sensor is fixedly installed on the roller to detect the distance between the roller and the steel strip in real time. The cooling and lubrication mechanism realizes the efficient transportation and recovery of coolant and lubricating oil. The use of the rotating ring ensures the flexible connection between the pipeline and the roller, and avoids the pipeline from being twisted or stretched during the rotation of the roller; the setting of the spray nozzle enhances the cooling and lubrication effect, and the application of the distance sensor improves the accuracy of the rolling process, ultimately achieving the effect of reducing equipment wear, improving product quality and production efficiency.

[0016] Furthermore, the rolling assembly also includes an opening and closing clamp and a second elastic member, the opening and closing clamp and the second elastic member are fastened together, the opening and closing clamp and the upper roller are hinged, and the opening and closing clamp and the lower roller are hinged.

[0017] By adopting the above technical solution, the opening and closing clamp is tightly connected with the second elastic member. Specifically, the second elastic member (such as a compression spring) is fixedly installed inside the opening and closing clamp to provide elastic support for the opening and closing of the opening and closing clamp. The opening and closing clamp is hinged with the upper roller and the lower roller respectively to form a rotatable connection structure. When it contacts the steel strip, the opening and closing clamp can rotate around the hinge point, close the space between the upper roller and the lower roller, stop spraying the steel strip, and squeeze it. The second elastic member applies elastic force to the opening and closing clamp to ensure that the upper roller and the lower roller fit tightly and apply uniform rolling pressure to the steel strip. The design of the opening and closing clamp allows the roller to control whether to spray through the distance sensor, which improves the operability and safety of the equipment. At the same time, through the action of the elastic member, the stability of the roller pressure during the rolling process is guaranteed, so as to achieve the effect of improving product quality and production efficiency.

[0018] Furthermore, the pressure regulating mechanism includes an electromagnetic block, a third elastic part, a pressure sensor and an electromagnetic slider. The electromagnetic block and the opening and closing clamp are tightly connected, the electromagnetic slider and the opening and closing clamp are slidably connected, the third elastic part and the electromagnetic block are tightly connected, the third elastic part and the electromagnetic slider are tightly connected, the electromagnetic block and the electromagnetic slider are magnetically repelled, and the pressure sensor and the electromagnetic slider are tightly connected.

[0019] By adopting the above technical solution, the electromagnetic slider is slidably connected to the opening and closing clamp and can slide freely along the sliding groove of the opening and closing clamp. One end of the third elastic member (such as a compression spring) is fixedly connected to the electromagnetic block, and the other end is fixedly connected to the electromagnetic slider, providing elastic force for the electromagnetic slider to return to its original position. The same poles of the electromagnetic block and the electromagnetic slider are opposite to each other, forming a magnetic pole repulsion transmission relationship. When the electromagnetic block is energized, a magnetic field is generated to cause the electromagnetic slider to be subjected to repulsive force, overcome the elastic force of the third elastic member and move in the direction away from the electromagnetic block, thereby driving the opening and closing clamp to open or close. The pressure sensor is fixedly installed on the electromagnetic slider to detect the position of the electromagnetic slider and the pressure applied to the opening and closing clamp in real time, and feed the data back to the control system.

[0020] When the roller pressure needs to be adjusted, the control system controls the current size and direction of the electromagnetic block, changes its magnetic field strength and magnetic pole direction, and drives the electromagnetic slider to move along the slide groove of the opening and closing clamp through the force of repulsion or attraction of the magnetic poles, adjusts the opening and closing degree of the opening and closing clamp, and then adjusts the pressure between the upper roller and the lower roller. The third elastic member provides reverse elastic force to ensure that the electromagnetic slider can return to its original position when the electromagnetic force disappears. The pressure sensor monitors the pressure changes in real time to ensure the accuracy of pressure regulation. The control system adjusts the current of the electromagnetic block and changes the magnetic field strength according to production needs and the detected rolling pressure, so that the electromagnetic slider moves under the action of electromagnetic force and elastic force, adjusts the clamping force of the opening and closing clamps, and thus accurately controls the pressure of the roller. The pressure sensor feeds back real-time pressure data to the control system to achieve closed-loop control. By utilizing the interaction between electromagnetic force and elastic force, the opening and closing degree of the opening and closing clamps is accurately adjusted through the repulsive transmission of the magnetic poles of the electromagnetic block and the electromagnetic slider, thereby controlling the pressure between the upper roller and the lower roller. The effect achieved is to achieve accurate and rapid adjustment of the rolling pressure, improve the stability of the rolling process and product quality, and at the same time, through real-time monitoring by the pressure sensor, ensure the reliability and safety of pressure control.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The present invention can identify the thickness and surface defects of the steel strip in real time by arranging a defect detection mechanism under the rolling device, which not only improves the stability and reliability of product quality and reduces the scrap rate, but also effectively improves production efficiency and meets the needs of high-precision production.

[0022] The pressure adjustment mechanism is tightly connected to the rolling assembly, and the hydraulic cylinder is connected to the upper roller to achieve precise control of the thickness of the steel strip. The extension and retraction of the hydraulic cylinder directly affects the pressure of the upper roller. Combined with the real-time feedback of the sensor, the pressure can be adjusted quickly to ensure the accuracy and stability of the rolling process and improve the consistency of the product.

[0023] The cooling and lubrication mechanism is connected to the rolling assembly, and the lubricating oil and coolant are delivered to the roller surface through the lubrication pipe and the cooling pipe. The spiral temperature control groove and the lubrication groove are arranged alternately to ensure the temperature and lubrication uniformity of the roller shaft and the roller, reduce friction and temperature, prevent overheating and wear, extend the service life of the equipment, and reduce maintenance costs.

[0024] An opening and closing clamp and a second elastic member are designed, and the opening and closing clamp is hinged to the upper roller and the lower roller respectively. When the opening and closing clamp is opened, lubricating liquid can be sprayed on the front side, which improves the lubrication efficiency, reduces the friction between the roller and the steel strip, and further improves the product quality. At the same time, the design of the opening and closing clamp makes the operation of the equipment more flexible, ensures the stability of the roller pressure during the rolling process, and improves the safety and reliability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the rolling assembly of the present invention; Figure 3 This is a schematic diagram of the roller structure of the present invention; Figure 4 It is a structural schematic diagram of the defect detection mechanism of the present invention; Figure 5 This is a schematic diagram of the anti-skew wheel structure of the present invention; Figure 6 This is a schematic diagram of the structure of the cooling and lubrication mechanism of the present invention; Figure 7 It is a schematic diagram of the opening and closing clamp structure of the present invention; Figure 8 It is a schematic diagram of the structure of the pressure regulating mechanism of the present invention.

[0026] In the figure: 1, frame; 2, rolling assembly; 21, upper roller; 22, lower roller; 23, roller shaft; 231, temperature control groove; 232, lubrication groove; 24, roller block; 25, roller motor; 26, roller hydraulic cylinder; 27, opening and closing clamp; 28, second elastic member; 3, defect detection mechanism; 31, anti-deviation wheel; 311, wheel body; 3111, expansion chamber; 312, expansion membrane; 313, first elastic member; 314, air pump; 32, Detection frame; 33. Pull-back cylinder; 34. Pull-back driven wheel; 35. Pull-back block; 36. Infrared thermal imager; 37. Laser thickness gauge; 4. Pressure regulating mechanism; 41. Electromagnetic block; 42. Third elastic member; 43. Pressure sensor; 44. Electromagnetic slider; 5. Cooling and lubricating mechanism; 51. Lubrication pump; 52. Cooling pump; 53. Lubrication pipeline; 54. Cooling pipeline; 55. Rotating ring; 56. Distance sensor; 57. Spray nozzle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 - Figure 8 As shown, the present invention provides a technical solution for a cold-rolled steel strip rolling device with a defect detection function: The rolling device includes a frame 1, a rolling assembly 2, a defect detection mechanism 3, a pressure regulating mechanism 4 and a cooling and lubricating mechanism 5. The rolling assembly 2 and the frame 1 are tightly connected, the defect detection mechanism 3 is located below the rolling assembly 2, the pressure regulating mechanism 4 and the rolling assembly 2 are tightly connected, and the defect detection mechanism 3 and the pressure regulating mechanism 4, the cooling and lubricating mechanism 5 and the rolling assembly 2 are connected.

[0029] By adopting the above technical solution, the defect detection mechanism 3 is located below the rolling assembly 2 to identify thickness defects; the pressure regulating mechanism 4 is tightly connected to the rolling assembly 2, and is transmission-connected to the upper roller 21 through a hydraulic cylinder. The telescopic action of the hydraulic cylinder directly affects the pressure of the upper roller 21, thereby realizing the control of the thickness of the steel strip; the cooling and lubricating mechanism 5 is connected to the rolling assembly 2, and lubricating oil and coolant are delivered to the roller surface through a lubrication pipe 53 and a cooling pipe 54, thereby reducing friction and temperature and ensuring the stability of the rolling process. The steel strip enters the rolling assembly 2 from the entrance, and is rolled into the required thickness and width under the pressure of the upper and lower rollers 22; the pressure regulating mechanism 4 adjusts the pressure of the hydraulic cylinder in real time according to the data fed back by the sensor to ensure the rolling accuracy; during the rolling process, the cooling and lubricating mechanism 5 continuously provides lubrication and cooling for the roller to prevent overheating and wear; the rolled steel strip passes through the defect detection mechanism 3 for inspection, thereby improving product quality, reducing scrap rate, improving production efficiency, and extending the service life of the equipment.

[0030] Furthermore, the rolling assembly 2 includes an upper roller 21, a lower roller 22, a roller shaft 23, a roller block 24, a roller motor 25 and a roller hydraulic cylinder 26. The upper roller 21 and the lower roller 22 are respectively mounted on the roller shaft 23. The roller shaft 23 is connected to the cooling and lubrication mechanism 5. The roller shaft 23 is rotationally connected to the roller block. The roller motor 25 is fixedly connected to the roller block 24. The roller motor 25 is transmission-connected to the roller shaft 23. The roller hydraulic cylinder 26 is fixedly connected to the frame 1. The roller hydraulic cylinder 26 is transmission-connected to the roller block 24.

[0031] By adopting the above technical solution, the upper roller 21 and the lower roller 22 are respectively installed on the roller shaft 23, the roller shaft 23 is connected with the cooling and lubricating mechanism 5, and a channel is provided inside for conveying coolant and lubricant to ensure that the roller maintains a suitable temperature and lubrication state during operation. The roller shaft 23 is rotatably connected with the roller block 24, specifically, the roller shaft 23 is installed on the roller block 24 through a bearing to achieve smooth rotation of the roller, the roller motor 25 is fixedly installed on the roller block 24, and the output shaft of the roller motor 25 drives the roller shaft 23 and the roller to rotate, and the roller hydraulic cylinder 26 is fixedly installed on the frame 1, and its piston rod is transmission-connected with the roller block 24, specifically, the piston rod pushes the roller block 24, and the roller block 24 is adjusted through the telescopic movement of the hydraulic cylinder. The roller motor 25 is started by the pressure applied by the rollers, and the upper roller 21 and the lower roller 22 are driven to rotate. The steel strip enters between the rollers from the entrance, and is rolled into the required thickness and shape under the pressure applied by the roller hydraulic cylinder 26. At the same time, the cooling and lubricating mechanism 5 provides coolant and lubricant to the roller through the channel in the roller shaft 23, so as to reduce friction and temperature and prevent overheating and wear. The rotational connection between the roller shaft 23 and the roller block 24 ensures the stable operation of the roller. The roller hydraulic cylinder 26 adjusts the roller pressure in real time through the transmission connection to realize precise control of the rolling process. Through the above-mentioned structural design and working principle, the present invention can realize efficient and precise steel strip rolling, improve product quality, reduce energy consumption and extend the service life of the equipment.

[0032] Furthermore, there are two roller blocks 24, and the angle between the two roller blocks 24 is 90 degrees. A temperature control groove 231 is provided on the roller shaft 23, and a lubrication groove 232 is provided on the roller shaft 23. The temperature control groove 231 is spiral, and the lubrication groove 232 is spiral. The temperature control groove 231 and the lubrication groove 232 are arranged alternately, and the temperature control groove 231 is connected to the cooling and lubrication mechanism 5, and the lubrication groove 232 is connected to the cooling and lubrication mechanism 5.

[0033] By adopting the above technical solution, the roller 23 is provided with a spiral temperature control groove 231 and a lubrication groove 232, which are arranged alternately. The temperature control groove 231 is connected to the cooling and lubricating mechanism 5, and the coolant is transported through the spiral channel of the temperature control groove 231 and flows evenly along the roller 23, thereby realizing effective temperature control of the roller 23 and the roller. The lubrication groove 232 is also connected to the cooling and lubricating mechanism 5, and the lubricating oil is transported to the roller 23 through the spiral channel of the lubrication groove 232. During the working process, the coolant and the lubricating oil flow alternately along their respective spiral grooves, thereby ensuring the temperature and lubrication uniformity of the roller 23 and avoiding local overheating or wear. The roller block 24 is rotatably connected to the roller 23 through the bearing, and the bearing is installed between the roller 23 and the roller block 24, so that the roller block 24 can rotate with the roller 23 while maintaining its own stability. Since the two roller blocks 24 are arranged at an angle of 90 degrees, the steel strip can be rolled in multiple directions, thereby enhancing the rolling uniformity and the surface quality of the product.

[0034] Furthermore, the defect detection mechanism 3 includes an anti-skew wheel 31, a detection frame 32, a pull-back cylinder 33, a pull-back driven wheel 34, a pull-back block 35, an infrared thermal imager 36 and a laser thickness gauge 37. The anti-skew wheel 31 is rotatably connected to the detection frame 32, the pull-back cylinder 33 is fastened to the detection frame 32, the pull-back cylinder 33 is transmission-connected to the pull-back block 35, the pull-back driven wheel 34 is rotatably connected to the pull-back block 35, the infrared thermal imager 36 is fastened to the detection frame 32, the laser thickness gauge 37 is fastened to the detection frame 32, and the anti-skew wheel 31 is rotatably connected to the detection frame 32. The invention comprises a wheel body 311, an expansion membrane 312, a first elastic member 313 and an air pump 314. The wheel body 311 is provided with an expansion chamber 3111, the expansion chamber 3111 is located at both sides of the wheel body 311, the expansion membrane 312 and the wheel body 311 are fastened together, the first elastic member 313 is located in the expansion chamber 3111, the first elastic member 313 and the wheel body 311 are fastened together, the first elastic member 313 and the expansion membrane 312 are fastened together, the air pump 314 and the wheel body 311 are fastened together, and the air pump 314 and the expansion chamber 3111 are in communication.

[0035] By adopting the above technical solution, the anti-deviation wheel 31 is rotatably connected to the detection frame 32, and can flexibly adjust its position with the movement of the steel belt to prevent the steel belt from running off the track. The pull-back cylinder 33 is fixedly installed on the detection frame 32, and its piston rod is transmission-connected to the pull-back block 35. Specifically, the piston rod pushes or pulls the pull-back block 35 to adjust the position of the pull-back driven wheel 34. The pull-back driven wheel 34 is rotatably connected to the pull-back block 35 and is installed through a bearing so that it can rotate freely and maintain good contact with the steel belt. The infrared thermal imager 36 and the laser thickness gauge 37 are both fixedly installed on the detection frame 32, and are respectively used to monitor the surface temperature distribution and thickness change of the steel belt in real time. The anti-deviation wheel 31 includes a wheel body 311, an expansion membrane 312, a first elastic member 313 and an air pump 314. An expansion chamber 3111 is provided on the wheel body 311, which is located on both sides of the wheel body 311 to form a symmetrical structure. The expansion membrane 312 is fixedly connected to the wheel body 311 to close the outer opening of the expansion chamber 3111. The first elastic member 313 (such as a spring) is located in the expansion chamber 3111, one end of which is fixedly connected to the inner wall of the wheel body 311, and the other end is fixedly connected to the inner side of the expansion membrane 312 to provide a reset elastic force. The air pump 314 is fixedly installed on the wheel body 311 and is connected to the expansion chamber 3111 through a pipeline. When working, the air pump 314 inflates the expansion chamber 3111, pushes the expansion membrane 312 to expand outward, overcomes the elastic force of the first elastic member 313, makes the expansion membrane 312 contact the side of the steel strip, increases the lateral support force of the anti-deviation wheel 31, and prevents the steel strip from running off. When it is necessary to reduce the pressure or stop working, the air pump 314 stops supplying air, and the first elastic member 313 restores the expansion membrane 312 to its original position. After the steel strip is rolled by the rolling assembly 2, it enters the area of ​​the defect detection mechanism 3. The anti-deviation wheel 31 maintains the correct traveling direction of the steel strip through the adjustment of the expansion membrane 312. The infrared thermal imager 36 monitors the surface temperature of the steel strip in real time and detects possible abnormal temperature areas; the laser thickness gauge 37 measures the thickness of the steel strip to ensure that it is within the qualified range. If it is detected that the steel strip deviates or the size is unqualified, the pull-back cylinder 33 is started, and the piston rod drives the pull-back block 35 to move, driving the pull-back driven wheel 34 to adjust the position and apply a correction force to the steel strip. Through the combination of mechanical and pneumatic devices, real-time monitoring and adjustment of the position and quality of the steel strip are achieved. The anti-deviation wheel 31 uses the cooperation of the air pump 314 and the expansion membrane 312 to dynamically adjust the lateral pressure; the pull-back cylinder 33 is connected to the pull-back block 35 and the pull-back driven wheel 34 through a transmission, and pulls back in time when uneven thickness is detected. The effect achieved is to effectively prevent the steel strip from deviating during high-speed operation, ensure the dimensional accuracy of the steel strip, improve the product qualification rate, and reduce production losses.

[0036] Furthermore, the cooling and lubrication mechanism 5 includes a lubrication pump 51, a cooling pump 52, a lubrication pipe 53, a cooling pipe 54, a rotating ring 55, a distance sensor 56 and a spray nozzle 57. The lubrication pump 51 is tightly connected to the frame 1, the cooling pump 52 is tightly connected to the frame 1, the cooling pipe 54 is communicated with the temperature control groove 231, the lubrication pipe 53 is communicated with the lubrication groove 232, the cooling pipe 54 is tightly connected to the rotating ring 55, the lubrication pipe 53 is tightly connected to the rotating ring 55, the rotating ring 55 is rotatably connected to the roller 23, the spray nozzle 57 is tightly connected to the roller 23 and communicated with the roller 23, and the distance sensor 56 is tightly connected to the roller 23.

[0037] By adopting the above technical solution, the lubrication pump 51 and the cooling pump 52 are fixedly installed on the frame 1 to provide power for the transportation of lubricating oil and coolant. The cooling pipe 54 is connected with the temperature control groove 231 on the roller 23. The coolant enters the spiral temperature control groove 231 through the cooling pipe 54 and circulates inside the roller 23 to reduce the temperature of the roller 23 and the roller. The lubrication pipe 53 is connected with the lubrication groove 232 on the roller 23. The lubricating oil enters the spiral lubrication groove 232 through the lubrication pipe 53 to provide continuous lubrication for the rotating connection between the roller 23 and the roller block 24, reducing friction and wear. The cooling pipe 54 and the lubrication pipe 53 are both tightly connected with the rotating ring 55. The rotating ring 55 is rotatably connected with the roller 23 through the bearing, allowing the pipe to The roller 23 rotates synchronously with the rotation of the roller 23 to prevent the pipeline from being entangled or broken. The spray nozzle 57 is fixedly installed on the roller 23 and is connected to the internal channel of the roller 23. It can spray lubricating oil onto the steel strip to enhance the cooling and lubricating effects. The distance sensor 56 is fixedly installed on the roller 23 to detect the distance between the roller and the steel strip in real time. The cooling and lubrication mechanism 5 realizes the efficient transportation and recovery of coolant and lubricating oil. The use of the rotating ring 55 ensures the flexible connection between the pipeline and the roller 23, and avoids the pipeline from being twisted or stretched during the rotation of the roller 23. The setting of the spray nozzle 57 enhances the cooling and lubrication effects. The application of the distance sensor 56 improves the accuracy of the rolling process, and ultimately achieves the effect of reducing equipment wear and improving product quality and production efficiency.

[0038] Furthermore, the rolling assembly 2 also includes an opening and closing clamp 27 and a second elastic member 28 , the opening and closing clamp 27 and the second elastic member 28 are fastened together, the opening and closing clamp 27 and the upper roller 21 are hinged, and the opening and closing clamp 27 and the lower roller 22 are hinged.

[0039] By adopting the above technical solution, the opening and closing clamp 27 is tightly connected with the second elastic member 28. Specifically, the second elastic member 28 (such as a compression spring) is fixedly installed inside the opening and closing clamp 27 to provide elastic support for the opening and closing of the opening and closing clamp 27. The opening and closing clamp 27 is hinged with the upper roller 21 and the lower roller 22 respectively to form a rotatable connection structure. When abutting against the steel strip, the opening and closing clamp 27 can rotate around the hinge point, close the space between the upper roller 21 and the lower roller 22, stop spraying the steel strip, and squeeze it. The second elastic member 28 applies elastic force to the opening and closing clamp 27 to ensure that the upper roller 21 and the lower roller 22 are tightly fitted, and a uniform rolling pressure is applied to the steel strip. The design of the opening and closing clamp 27 allows the roller to be sprayed through the control of the distance sensor 56, which improves the operability and safety of the equipment. At the same time, through the action of the elastic member, the stability of the roller pressure during the rolling process is guaranteed, so as to achieve the effect of improving product quality and production efficiency.

[0040] Furthermore, the pressure regulating mechanism 4 includes an electromagnetic block 41, a third elastic member 42, a pressure sensor 43 and an electromagnetic slider 44. The electromagnetic block 41 is fixedly connected to the opening and closing clamp 27, the electromagnetic slider 44 is slidingly connected to the opening and closing clamp 27, the third elastic member 42 is fixedly connected to the electromagnetic block 41, the third elastic member 42 is fixedly connected to the electromagnetic slider 44, the electromagnetic block 41 and the electromagnetic slider 44 are magnetically repelled from each other, and the pressure sensor 43 and the electromagnetic slider 44 are fixedly connected.

[0041] By adopting the above technical solution, the electromagnetic slider 44 is slidably connected to the opening and closing clamp 27 and can slide freely along the slide groove of the opening and closing clamp 27. One end of the third elastic member 42 (such as a compression spring) is fixedly connected to the electromagnetic block 41, and the other end is fixedly connected to the electromagnetic slider 44, providing elastic force for the electromagnetic slider 44 to return to its original position. The same poles of the electromagnetic block 41 and the electromagnetic slider 44 are opposite to each other, forming a magnetic pole repulsion transmission relationship. When the electromagnetic block 41 is energized, a magnetic field is generated to cause the electromagnetic slider 44 to be subjected to a repulsive force, overcome the elastic force of the third elastic member 42 and move in a direction away from the electromagnetic block 41, thereby driving the opening and closing clamp 27 to open or close. The pressure sensor 43 is fixedly installed on the electromagnetic slider 44, and detects the position of the electromagnetic slider 44 and the pressure applied to the opening and closing clamp 27 in real time, and feeds the data back to the control system.

[0042] When the roller pressure needs to be adjusted, the control system controls the current size and direction of the electromagnetic block 41, changes its magnetic field strength and magnetic pole direction, and drives the electromagnetic slider 44 to move along the slide groove of the opening and closing clamp 27 through the force of repulsion or attraction of the magnetic poles, adjusts the opening and closing degree of the opening and closing clamp 27, and then adjusts the pressure between the upper roller 21 and the lower roller 22. The third elastic member 42 provides reverse elastic force to ensure that the electromagnetic slider 44 can return to its original position when the electromagnetic force disappears. The pressure sensor 43 monitors the pressure change in real time to ensure the accuracy of pressure regulation. The control system adjusts the current of the electromagnetic block 41 according to production needs and the detected rolling pressure, changes the magnetic field strength, and moves the electromagnetic slider 44 under the action of electromagnetic force and elastic force, adjusts the clamping force of the opening and closing clamp 27, and then accurately controls the pressure of the roller. The pressure sensor 43 feeds back real-time pressure data to the control system to achieve closed-loop control. By utilizing the interaction between the electromagnetic force and the elastic force, the opening and closing degree of the opening and closing clamp 27 is accurately adjusted through the magnetic pole repulsion transmission of the electromagnetic block 41 and the electromagnetic slider 44, thereby controlling the pressure between the upper roller 21 and the lower roller 22. The effect achieved is to achieve accurate and rapid adjustment of the rolling pressure, improve the stability of the rolling process and the product quality. At the same time, through real-time monitoring by the pressure sensor 43, the reliability and safety of pressure control are ensured.

[0043] The working principle of the present invention is as follows: the steel strip first enters the rolling assembly 2, wherein the upper roller 21 and the lower roller 22 are respectively mounted on the roller shaft 23, and the roller shaft 23 is provided with a spiral temperature control groove 231 and a lubrication groove 232, which are arranged alternately and communicated with the cooling and lubrication mechanism 5; the coolant and the lubricating oil respectively pass through the cooling pump 52 and the lubrication pump 51, through the cooling pipe 54 and the lubrication pipe 53, and enter the temperature control groove 231 and the lubrication groove 232 in the roller shaft 23 through the rotating ring 55, so as to ensure the temperature and lubrication uniformity of the roller shaft 23 and the roller; the roller blocks 24 (two, with an angle of 90 degrees) are rotatably connected to the roller shaft 23 through bearings, and are driven to rotate by the roller motor 25; when the distance sensor 56 detects that the steel strip is approaching, the opening and closing clamp 27 is opened and closed at the electromagnetic block 41 and the electromagnetic slider 44 (controlled by the third elastic member 42 and the pressure sensor 43) The spray nozzle 57 opens under the action of the action, and the lubricating oil is sprayed onto the steel strip to reduce friction; then, the opening and closing clamp 27 is closed, and the piston rod of the roller hydraulic cylinder 26 pushes the roller block 24 to adjust the roller to apply precise pressure to the steel strip; after rolling, the steel strip enters the defect detection mechanism 3, and the anti-deviation wheel 31 inflates the expansion chamber 3111 through the air pump 314 to expand the expansion membrane 312, and cooperates with the first elastic member 313 to prevent the steel strip from deviating; the infrared thermal imager 36 and the laser thickness gauge 37 are fixed on the detection frame 32 to monitor the temperature and thickness of the steel strip in real time; if uneven thickness is detected, the pull-back cylinder 33 adjusts the position of the steel strip through the pull-back block 35 and the pull-back driven wheel 34 to achieve correction; during the whole process, various small components and virtual features work together to ensure high-precision rolling, temperature control, lubrication effect and real-time defect detection of the steel strip.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cold-rolled steel strip rolling device with defect detection function, characterized in that: The rolling device comprises a frame (1), a rolling assembly (2), a defect detection mechanism (3), a pressure regulating mechanism (4) and a cooling and lubricating mechanism (5); the rolling assembly (2) and the frame (1) are tightly connected; the defect detection mechanism (3) is located below the rolling assembly (2); the pressure regulating mechanism (4) and the rolling assembly (2) are tightly connected; the defect detection mechanism (3) and the pressure regulating mechanism (4) and the cooling and lubricating mechanism (5) are in communication with the rolling assembly (2).

2. A cold-rolled steel strip rolling device with defect detection function according to claim 1, characterized in that: The rolling assembly (2) comprises an upper roller (21), a lower roller (22), a roller shaft (23), a roller block (24), a roller motor (25) and a roller hydraulic cylinder (26); the upper roller (21) and the lower roller (22) are respectively mounted on the roller shaft (23); the roller shaft (23) is in communication with a cooling and lubricating mechanism (5); the roller shaft (23) is rotationally connected to the roller block; the roller motor (25) is firmly connected to the roller block (24); the roller motor (25) is transmission-connected to the roller shaft (23); the roller hydraulic cylinder (26) is firmly connected to the frame (1); and the roller hydraulic cylinder (26) is transmission-connected to the roller block (24).

3. The cold-rolled steel strip rolling device with defect detection function according to claim 2, characterized in that: There are two roller blocks (24), the angle between the two roller blocks (24) is 90 degrees, the roller shaft (23) is provided with a temperature control groove (231), the roller shaft (23) is provided with a lubrication groove (232), the temperature control groove (231) is spiral-shaped, the lubrication groove (232) is spiral-shaped, the temperature control groove (231) and the lubrication groove (232) are arranged alternately, the temperature control groove (231) is connected to a cooling and lubrication mechanism (5), and the lubrication groove (232) is connected to the cooling and lubrication mechanism (5).

4. The cold-rolled steel strip rolling device with defect detection function according to claim 3, characterized in that: The defect detection mechanism (3) comprises an anti-deviation wheel (31), a detection frame (32), a pull-back cylinder (33), a pull-back driven wheel (34), a pull-back block (35), an infrared thermal imager (36) and a laser thickness gauge (37); the anti-deviation wheel (31) and the detection frame (32) are rotatably connected, the pull-back cylinder (33) and the detection frame (32) are firmly connected, the pull-back cylinder (33) and the pull-back block (35) are transmission-connected, the pull-back driven wheel (34) and the pull-back block (35) are rotatably connected, the infrared thermal imager (36) and the detection frame (32) are firmly connected, and the laser thickness gauge (37) and the detection frame (32) are firmly connected.

5. The cold-rolled steel strip rolling device with defect detection function according to claim 4, characterized in that: The anti-deviation wheel (31) comprises a wheel body (311), an expansion membrane (312), a first elastic member (313) and an air pump (314); an expansion chamber (3111) is provided on the wheel body (311); the expansion chamber (3111) is located on both sides of the wheel body (311); the expansion membrane (312) and the wheel body (311) are tightly connected; the first elastic member (313) is located in the expansion chamber (3111); the first elastic member (313) and the wheel body (311) are tightly connected; the first elastic member (313) and the expansion membrane (312) are tightly connected; the air pump (314) and the wheel body (311) are tightly connected; and the air pump (314) and the expansion chamber (3111) are in communication.

6. The cold-rolled steel strip rolling device with defect detection function according to claim 5, characterized in that: The cooling and lubricating mechanism (5) comprises a lubrication pump (51), a cooling pump (52), a lubrication pipeline (53), a cooling pipeline (54), a rotating ring (55), a distance sensor (56) and a spray nozzle (57); the lubrication pump (51) is tightly connected to the frame (1); the cooling pump (52) is tightly connected to the frame (1); the cooling pipeline (54) is communicated with the temperature control groove (231); the lubrication pipeline (53) is communicated with the lubrication groove (232); the cooling pipeline (54) is tightly connected to the rotating ring (55); the lubrication pipeline (53) is tightly connected to the rotating ring (55); the rotating ring (55) is rotatably connected to the roller shaft (23); the spray nozzle (57) is tightly connected to the roller shaft (23); the distance sensor (56) is tightly connected to the roller shaft (23).

7. The cold-rolled steel strip rolling device with defect detection function according to claim 6, characterized in that: The rolling assembly (2) further comprises an opening and closing clamp (27) and a second elastic member (28), wherein the opening and closing clamp (27) and the second elastic member (28) are tightly connected, the opening and closing clamp (27) and the upper roller (21) are hinged, and the opening and closing clamp (27) and the lower roller (22) are hinged.

8. The cold-rolled steel strip rolling device with defect detection function according to claim 7, characterized in that: The pressure regulating mechanism (4) comprises an electromagnetic block (41), a third elastic member (42), a pressure sensor (43) and an electromagnetic slider (44); the electromagnetic block (41) and the opening and closing clamp (27) are tightly connected; the electromagnetic slider (44) and the opening and closing clamp (27) are slidably connected; the third elastic member (42) and the electromagnetic block (41) are tightly connected; the third elastic member (42) and the electromagnetic slider (44) are tightly connected; the electromagnetic block (41) and the electromagnetic slider (44) are magnetically repelled from each other; and the pressure sensor (43) and the electromagnetic slider (44) are tightly connected.

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