Integrated cold rolling and annealing device for online grading and trimming of aluminum strip

Abstract

The application discloses an integrated cold-rolling annealing device for online grading and trimming of aluminum strips, relates to the technical field of aluminum material production equipment, and comprises a rack and a primary cold-rolling mechanism, a rough trimming mechanism, an annealing mechanism, a secondary cold-rolling mechanism and a fine trimming mechanism arranged in sequence. The rough trimming mechanism and the fine trimming mechanism are provided with a waste collecting mechanism. The two sides of the rough trimming mechanism and the fine trimming mechanism are both provided with a centering and anti-bouncing mechanism for centering and preventing bouncing of the two sides of the aluminum strip. The annealing mechanism and the rough trimming mechanism and the side of the fine trimming mechanism away from the secondary cold-rolling mechanism are both provided with a cleaning mechanism for cleaning the surface of the aluminum strip. The rough trimming mechanism comprises a rough trimming unit and a rough trimming standby unit. The fine trimming mechanism comprises a fine trimming unit, a fine trimming standby unit and a lubricating unit. The annealing mechanism comprises an annealing box, an adjusting and limiting unit, an annealing guide roller, a centering and correcting unit and the like. The application performs large-scale rough trimming in the middle soft and hard state stage of the aluminum strip and small-scale fine trimming in the hard state stage of the aluminum strip, so that the grading edge quality control of the aluminum strip is realized.

Description

Technical Field

[0001] This invention relates to the field of aluminum production equipment technology, and in particular to an integrated cold rolling annealing device for online grading and edge trimming of aluminum strip. Background Technology

[0002] During the production of aluminum strip, it is necessary to perform edge trimming to remove edge defects. Current technology typically utilizes a separate trimming device. However, for H18 hard-state thin aluminum strip, due to its high hardness and poor plasticity, directly trimming the finished strip using traditional processes easily produces quality defects such as edge burrs, micro-cracks, and shape damage, severely affecting the edge smoothness and performance of the finished aluminum strip.

[0003] In the existing improved process, the processing method of trimming after single annealing still has technical limitations. It can only improve the edge quality at the moment of trimming, but cannot avoid the secondary damage to the edge of the aluminum strip caused by the subsequent cold rolling process. The edge defect problem still cannot be completely solved, making it difficult to meet the production requirements of high-quality H18 hard aluminum strip. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated cold rolling and annealing device for online grading and edge trimming of aluminum strip. It performs a first cold rolling and rough trimming before annealing, and a second cold rolling and fine trimming after annealing. The device performs large-scale rough trimming in the soft-hard stage of the aluminum strip and small-scale fine trimming in the hard stage of the aluminum strip, thereby achieving graded edge quality control of the aluminum strip and ensuring the finished product quality of the hard aluminum strip.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: An integrated cold rolling and annealing device for online grading and edge trimming of aluminum strip includes a frame and a primary cold rolling mechanism, a roughing mechanism, an annealing mechanism, a secondary cold rolling mechanism, and a finishing mechanism arranged sequentially along the length of the frame. The roughing mechanism and the finishing mechanism are both equipped with a waste collection mechanism. The roughing mechanism and the finishing mechanism are both equipped with centering and anti-bullet-proof mechanisms for centering and protecting the aluminum strip from bullets on both sides. The annealing mechanism and the roughing mechanism, as well as the side of the finishing mechanism away from the secondary cold rolling mechanism, are equipped with cleaning mechanisms for cleaning the surface of the aluminum strip. The roughing mechanism includes roughing frames disposed on both sides of the frame along its length. The two roughing frames are synchronously and oppositely slidably mounted on the frame along its width. Each of the two roughing frames has a roughing unit located on both sides of the aluminum strip along its length for trimming the edges. Each roughing unit includes a roughing turntable slidably mounted on the roughing frame along its width. The roughing turntable has a vertically arranged roughing guide, the bottom of which is rotatably mounted on the turntable, with its rotation axis vertically positioned. Two roughing seats are vertically slidably mounted on the roughing guide frame. Each roughing seat is provided with a roughing shaft arranged along the width direction of the frame. The roughing shaft is rotatably mounted on the roughing seat around its axis, and its two ends are respectively located on both sides of the roughing guide frame. Two coaxial roughing disc shears are respectively mounted on both ends of the roughing shaft. The two roughing disc shears located on the same side of the roughing frame cooperate vertically to cut the aluminum strip. The roughing disc shears are slidably mounted on the roughing shaft along their axis and are connected to a roughing locking component to fix their position. The precision cutting mechanism includes precision cutting frames disposed on both sides of the frame along its length. The two precision cutting frames are synchronously and oppositely slidably mounted on the frame along its width. Each of the two precision cutting frames is equipped with a precision cutting unit located on both sides of the aluminum strip along its length to trim the aluminum strip. Each precision cutting unit includes a precision cutting turntable slidably mounted on the precision cutting frame along its width. The precision cutting turntable has a vertically arranged precision cutting guide, the bottom of which is rotatably mounted on the turntable, and its rotation axis is vertically oriented. Two precision cutting seats are vertically slidably mounted on the precision cutting guide. Each precision cutting seat is provided with a precision cutting shaft arranged along the width direction of the frame. The precision cutting shaft is rotatably mounted on the precision cutting seat around its axis, and its two ends are respectively located on both sides of the precision cutting guide. Two precision cutting disc shears coaxial with the precision cutting shaft are respectively mounted on both ends of the precision cutting shaft. The two precision cutting disc shears located on the same side of the precision cutting frame cooperate vertically to cut the aluminum strip. The precision cutting disc shears are slidably mounted on the precision cutting shaft along their axis and are connected to a precision cutting locking component to fix their position. The roughing frame is equipped with a roughing spare unit located on the side of the roughing unit closer to the annealing mechanism. The roughing spare unit corresponds to the roughing unit and takes over the edge trimming work when the roughing unit changes blades. The finishing frame is equipped with a finishing spare unit located on the side of the finishing unit away from the secondary cold rolling mechanism. The finishing spare unit corresponds to the finishing unit and takes over the edge trimming work when the finishing unit changes blades. Both the finishing unit and the finishing spare unit are equipped with a lubrication unit that works with them. The annealing mechanism includes an annealing box housed within a frame. The annealing box has a feed inlet on the side near the roughing mechanism and a discharge outlet on the side near the secondary cold rolling mechanism. Both the feed inlet and the discharge outlet are equipped with adjustment limiting units for adjusting the size of their openings along the width direction of the frame. Several annealing guide rollers are arranged along the length direction of the frame inside the annealing box. These annealing guide rollers are arranged along the width direction of the frame and their ends are vertically slidably installed inside the annealing box. The aluminum strip passes over the several annealing guide rollers in an S-shape. The annealing box is equipped with a centering and correction unit for centering and correcting the two sides of the aluminum strip, and the centering and correction unit corresponds to and cooperates with the several annealing guide rollers.

[0006] By adopting the above technical solution, the aluminum strip sequentially passes through a primary cold rolling mechanism, a rough cutting mechanism, an annealing mechanism, a secondary cold rolling mechanism, and a precision cutting mechanism, respectively undergoing primary cold rolling, rough cutting, annealing, secondary cold rolling, and precision cutting. During the intermediate soft-hard stage after primary cold rolling, the aluminum strip undergoes significant rough edge trimming by the rough cutting mechanism, and during the hard stage after secondary cold rolling, it undergoes minor precision edge trimming by the precision cutting mechanism. This achieves graded edge quality control of the aluminum strip, avoiding quality defects such as edge burrs, micro-cracks, and sheet shape damage that are easily generated by significant edge trimming in the hard state. Simultaneously, this invention integrates all mechanisms into a unified production line. Throughout the entire process, the aluminum strip flows through each mechanism in strip form, eliminating the need for repeated rewinding. This not only improves production efficiency but also ensures uniform annealing by annealing the aluminum strip in strip form, thereby improving product quality.

[0007] The centering and anti-slip mechanism and the centering and correction units in the annealing mechanism work together to achieve multi-point centering of the aluminum strip throughout the entire process, preventing deviation during the aluminum strip transport and ensuring the processing quality of the aluminum strip by each mechanism. The centering and anti-slip mechanism is set on both sides of the roughing and finishing mechanisms, which also ensures the stability of the aluminum strip during the two edge cutting processes and ensures uniform edge cutting quality. The waste collection mechanism collects waste edges after edge cutting to prevent the accumulation of waste edge projectiles, which can easily scratch the aluminum strip or affect the normal operation of the roughing and finishing mechanisms. The cleaning mechanism is used to clean the aluminum strip on the output side of the roughing and finishing mechanisms, removing emulsion, debris, and other impurities remaining on the surface of the aluminum strip after the two cold rolling processes. This ensures that the aluminum strip enters the annealing mechanism in a clean state for annealing and final winding, avoiding poor surface quality caused by dirt on the aluminum strip during annealing. After subsequent winding, the aluminum strip can be directly put into storage or enter a next process without the need for rewinding and cleaning.

[0008] The roughing mechanism adopts a double-sided synchronous opposite-direction sliding roughing frame structure, which can quickly and adaptively adjust the distance according to the actual width of the aluminum strip to be processed, adapting to the production of aluminum strips of various specifications. In the roughing unit, two vertically sliding roughing seats are used to adjust the distance between the upper and lower roughing disc shears. The roughing disc shears slide circumferentially along the roughing axis to adjust the lateral clearance between the two roughing disc shears, and the position of the roughing disc shears on the roughing axis is fixed by the roughing locking component to meet the cutting requirements of different parameters.

[0009] In the roughing mechanism, the roughing turntable can slide along the width of the frame, the roughing guide can rotate around the vertical axis, and the two ends of the roughing shaft are located on both sides of the roughing frame, with roughing disc shears installed at both ends. At the same time, the roughing frame is equipped with a roughing spare unit located on the side of the roughing unit closer to the annealing mechanism. In this way, the two sets of roughing disc shears on both sides of the roughing guide in each roughing unit serve as backups for each other, and the roughing spare unit also serves as a backup for the roughing unit. Both are set on the roughing frame. When one set of roughing disc shears in the roughing unit wears out, the roughing spare unit directly takes over the work, and the roughing turntable slides away from the working position. Then, the roughing guide rotates 180° as a whole, rotating the other set of roughing disc shears to the working position. The roughing turntable then slides back to its original position, the roughing unit continues to work, and the roughing spare unit stops working. The precision cutting unit and the precision cutting backup unit in the precision cutting mechanism also adopt the above working principle, thus achieving uninterrupted operation of roughing and precision cutting. The cutting process continues without interrupting the cutting process during blade changes, ensuring production continuity. Furthermore, the backup unit is located at the rear end to prevent missed cuts and guarantee the quality of both stages of aluminum strip cutting. In addition, since the aluminum strip cut by the precision cutting mechanism is in a fully hardened state, both the precision cutting unit and the precision cutting backup unit are equipped with corresponding lubrication units to extend the service life of the disc shears.

[0010] The annealing mechanism employs a closed annealing chamber with several annealing guide rollers, forming an S-shaped winding structure. This significantly extends the effective heating length and duration of the aluminum strip within the annealing chamber, improving annealing efficiency. The adjustment and limiting units at the front and rear ends of the annealing chamber can adjust the effective opening width of the inlet and outlet according to the aluminum strip width specifications, minimizing heat loss within the chamber, reducing energy consumption, and improving heat utilization. Furthermore, the annealing guide rollers can slide vertically at both ends, and in conjunction with the centering and correction unit, can adapt to changes in aluminum strip tension in real time, dynamically correcting the aluminum strip's trajectory, preventing deviation or offset during the annealing process, ensuring the aluminum strip travels smoothly and centrally throughout the entire process, and avoiding problems such as unilateral stretching and localized deformation.

[0011] Furthermore, the roughing spare unit includes a vertically arranged roughing spare guide frame, on which two roughing spare seats are vertically slidably mounted. On each roughing spare seat, a roughing spare shaft arranged along the width direction of the frame is rotatably mounted on the side near the aluminum strip. A roughing spare disc shear is mounted on the end of the roughing spare shaft away from the roughing spare seat, and the roughing spare disc shear is slidably mounted on the roughing spare shaft along its axis and its position is fixed by a roughing locking component. The two roughing spare disc shears cooperate to cut the aluminum strip. The precision cutting spare unit includes a vertically arranged precision cutting spare guide frame. Two precision cutting spare seats are vertically slidably mounted on the precision cutting spare guide frame. A precision cutting spare shaft is rotatably mounted on the side of each precision cutting spare seat near the aluminum strip, and is arranged along the width direction of the frame. A precision cutting spare disc shear is mounted on the end of the precision cutting spare shaft away from the precision cutting spare seat. The precision cutting spare disc shear is slidably mounted on the precision cutting spare shaft along its axis and its position is fixed by a precision cutting locking component. The two precision cutting spare disc shears cooperate to cut the aluminum strip.

[0012] By adopting the above technical solution, the roughing backup unit and the fine cutting backup unit are basically similar, both being adjustable structures with vertical and horizontal gaps between the disc shears, allowing them to directly take over when the roughing / fine cutting unit needs a blade change. However, the working time of the roughing backup unit and the fine cutting backup unit is short, and the probability of disc shear damage is low, therefore there is no need to design two sets of disc shear structures.

[0013] Furthermore, both the coarse cutting locking component and the fine cutting locking component include a locking sleeve coaxially arranged with the corresponding coarse cutting disc shear / coarse cutting spare disc shear / fine cutting disc shear / fine cutting spare disc shear. An electromagnetic suction ring is embedded in the inner wall of the locking sleeve. An electromagnetic suction rod integrally formed with the corresponding coarse cutting shaft / coarse cutting spare shaft / fine cutting shaft / fine cutting spare shaft and cooperates with the electromagnetic suction ring is provided on the corresponding coarse cutting shaft / coarse cutting spare shaft / fine cutting spare shaft. An adjusting screw sleeve coaxially arranged with the locking sleeve is connected to one end of the locking sleeve near the corresponding coarse cutting seat / coarse cutting spare seat / fine cutting seat / fine cutting spare seat. The adjusting screw sleeve is threadedly connected to the corresponding coarse cutting shaft / coarse cutting spare shaft / fine cutting shaft / fine cutting spare shaft. A distance measuring sensor is installed on the side of the coarse cutting seat / coarse cutting spare seat / fine cutting seat / fine cutting spare seat near the locking sleeve.

[0014] By adopting the above technical solution, the positions of several disc shears in the roughing and finishing mechanisms are adjusted on their corresponding cutting axes through adjusting screw sleeves. Combined with a distance measuring sensor, the adjustment accuracy can be precisely controlled. After adjustment, both the roughing and finishing locking components achieve strong locking of the disc shears through the electromagnetic attraction of the electromagnetic ring and electromagnetic rod, combined with the threaded connection of the adjusting screw sleeve. This effectively resists disc shear displacement caused by shearing vibration and ensures the stability of the disc shears under high-speed shearing conditions.

[0015] Furthermore, the centering bulletproof mechanism includes centering bulletproof frames disposed on both sides of the frame along its length, and the two centering bulletproof frames are synchronously and oppositely slidably mounted on the frame along its width; a centering bulletproof seat is provided on the side of the centering bulletproof frame near the aluminum strip, which is arranged along the length of the frame, and a plurality of centering bulletproof rollers are arranged vertically along their length on the centering bulletproof seat, which is rotatably mounted on the centering bulletproof seat around its axis, and its outer wall is provided with a centering bulletproof groove coaxially arranged with it; the centering bulletproof mechanism also includes two centering bulletproof pressure rollers arranged along the width of the frame and corresponding vertically, the centering bulletproof pressure rollers are located on the side of the centering bulletproof seat near the corresponding roughing mechanism or fine cutting mechanism, and the centering bulletproof pressure rollers are vertically slidably mounted on the frame.

[0016] By adopting the above technical solution, the centering bulletproof frames on both sides of the aluminum strip are driven to slide synchronously and in opposite directions according to the width of the aluminum strip. The distance between the two centering bulletproof frames is adjusted so that the edge of the aluminum strip is engaged in the centering bulletproof grooves on the surface of several centering bulletproof rollers on both sides of the centering bulletproof seat, thereby limiting the aluminum strip on both sides and preventing the aluminum strip from moving or deviating from its original position during the edge cutting process. In addition, two centering bulletproof pressure rollers clamp the aluminum strip from the upper and lower surfaces to suppress bouncing, arching, or warping of the aluminum strip during the edge cutting process, ensuring edge cutting accuracy and production safety, and avoiding damage to the strip shape.

[0017] Furthermore, the waste collection mechanism includes a discharge conduit set at the discharge end of the corresponding coarse cutting standby unit or fine cutting standby unit. The discharge conduit is inclined downward along the length of the frame. Two receiving guides are installed on the frame, each corresponding to one of the discharge conduits. A receiving shaft is rotatably mounted on the receiving guide along the width of the frame, and the two receiving guides slide synchronously and in opposite directions along the width of the frame.

[0018] By adopting the above technical solution, the aluminum strip scrap cut by the roughing and finishing mechanisms is quickly discharged through the downward-sloping discharge guide and wound up by the take-up shaft, effectively preventing scrap accumulation or fly-outs from affecting the cutting operation and production safety. During the take-up process, the double-sided take-up guides slide synchronously and in opposite directions along the width of the frame, driving the take-up shaft to evenly wind up the scrap, avoiding local accumulation of scrap and excessively large scrap roll diameter, greatly improving scrap collection efficiency and storage capacity, and reducing the frequency of manual cleaning.

[0019] Furthermore, the lubrication unit includes lubricating oil tanks disposed on both sides of the frame, each of the lubricating oil tanks being connected to an oil supply pipeline; each precision cutting frame is provided with a lubrication frame located between the corresponding precision cutting unit and the precision cutting standby unit, the lubrication frame being provided with two lubrication grooves disposed along the length of the frame, the two lubrication grooves being disposed vertically and forming a U-shaped structure with their openings facing each other, the openings of the lubrication grooves being provided with oil-retaining lubricating cotton, and the end of the oil supply pipeline away from the lubricating oil tank being connected to the two lubrication grooves on the corresponding side to supply oil to the oil-retaining lubricating cotton; The two lubrication grooves located on the same side are slidably installed on the corresponding lubrication frame along the length of the frame. The two working precision cutting disc shears are located on opposite sides of the corresponding lubrication groove and are in contact with the oil-retaining lubricating cotton. When the precision cutting backup unit works in place of the precision cutting unit, the two lubrication grooves slide along the length of the frame until the two precision cutting backup disc shears enter their interior and contact the oil-retaining lubricating cotton, and then disengage from the precision cutting disc shears.

[0020] By adopting the above technical solution, the lubricating oil tank continuously supplies oil to the lubricating cotton stored in the lubrication groove through the oil supply pipeline. Under normal conditions, the lubrication groove corresponds to and cooperates with the precision cutting disc shears working in the precision cutting unit, providing lubrication for the precision cutting disc shears. When the standby cutting unit takes over the work of the precision cutting unit, the two lubrication grooves slide along the length of the frame until the two precision cutting standby disc shears enter their interiors and contact the lubricating cotton, providing lubrication for the two precision cutting standby disc shears, and disengaging from the precision cutting disc shears to avoid affecting the switching of the two sets of precision cutting disc shears. By utilizing the sliding of the lubrication grooves, the lubricating cotton stored in the lubrication grooves always adheres to the cutting edge of the precision cutting disc shears in the working state, achieving precise, uniform, and continuous online lubrication, effectively reducing the shear friction loss of the disc shears, reducing aluminum strip edge scratches and burr defects, while avoiding ineffective lubrication in non-working positions, improving the service life of the disc shears and the cutting quality of the aluminum strip.

[0021] Furthermore, the adjustment limiting unit includes adjustment plates arranged at both ends of the feed inlet / discharge outlet along the width direction of the frame. The ends of the adjustment plates at both ends of the feed inlet / discharge outlet that are far apart from each other are slidably mounted on the annealing chamber along their length direction, and the height of the adjustment plates is greater than the opening height of the feed inlet / discharge outlet to cover the feed inlet / discharge outlet. An adjustment limiting roller with a vertically arranged axis is rotatably mounted at the ends of the adjustment plates at both ends of the feed inlet / discharge outlet that are close to each other. The outer wall of the adjustment limiting roller is provided with an adjustment limiting groove coaxial with it. An elastic heat-insulating curtain located between the two adjustment limiting rollers is also connected to the ends of the adjustment plates at both ends of the feed inlet / discharge outlet that are close to each other. Two elastic heat-insulating curtains are arranged vertically.

[0022] By adopting the above technical solution, the distance between the two adjusting plates at the feed / discharge port is adjusted according to the width of the aluminum strip. The two adjusting plates are driven to slide synchronously and in opposite directions along the width of the frame, causing the aluminum strip to engage with the corresponding adjusting and limiting grooves on the adjusting and limiting rollers. This not only adjusts the opening of the feed / discharge port, reducing heat loss from the annealing chamber, but also precisely limits the sides of the aluminum strip, preventing it from shifting. Furthermore, the two elastic heat-insulating curtains installed at the top and bottom further reduce the opening gap between the feed / discharge port, preventing the escape of high-temperature hot air from the annealing chamber and the intrusion of external cold air, stabilizing the internal temperature environment of the annealing chamber, reducing production energy consumption, and also allowing for further cleaning of the upper and lower surfaces of the aluminum strip.

[0023] Furthermore, the centering and correction unit includes centering and correction plates arranged on both sides of the annealing guide roller along the length of the frame. Each centering and correction plate is provided with a plurality of centering and correction guide grooves corresponding one-to-one with the annealing guide roller along the length of its frame. The centering and correction guide grooves are arranged vertically. The two ends of the annealing guide roller pass through the corresponding centering and correction guide grooves and are vertically slidably installed in the centering and correction guide grooves. The two centering and correction plates are synchronously and oppositely slidably installed in the annealing box along the width of the frame.

[0024] By adopting the above technical solution, the centering and correction guide groove guides the annealing guide roller to make way and slide vertically. According to the width of the aluminum strip, the two centering and correction plates are driven to slide synchronously and in opposite directions along the width of the frame. The two centering and correction plates center and correct the aluminum strip from both sides, so as to avoid the aluminum strip from shifting in the annealing box, ensure the fit between the aluminum strip and the annealing guide roller, and ensure the tension stability and straight conveying of the aluminum strip.

[0025] Furthermore, each of the annealing guide rollers includes a heating roller and a heat-conducting sleeve arranged coaxially, with the heating roller installed inside the heat-conducting sleeve; a plurality of vertically arranged uniform air vents located between adjacent centering and correction guide grooves are provided on the side of the two centering and correction plates that are close to each other, and a uniform air fan is provided on the side of the two centering and correction plates that are far from each other, corresponding to the uniform air vents, and the uniform air fan is covered with a heat insulation protective cover.

[0026] By adopting the above technical solution, the annealing guide roller uses an integrated heating structure with a built-in heating roller and an outer heat-conducting sleeve to achieve uniform contact heating of the aluminum strip. Combined with the evenly distributed uniform airflow outlets on the centering and correction plate and the matching uniform airflow fan, a forced hot air circulation channel is formed inside the annealing chamber. This ensures uniform heat distribution within the annealing chamber, avoids large local temperature differences and uneven heating of the aluminum strip, guarantees the uniformity of aluminum strip annealing, and thus improves the quality of the aluminum strip. Furthermore, a heat insulation protective cover provides heat insulation protection for the uniform airflow fan, preventing the high temperature inside the annealing chamber from affecting the service life of the fan.

[0027] Furthermore, the cleaning mechanism includes two cleaning rollers arranged on the frame along the width direction of the frame. The cleaning rollers are arranged vertically and vertically, and both ends of the rollers are rotatably mounted on the frame around their axes. Each cleaning roller is fitted with a cleaning wiping sleeve coaxial with it. The discharge side of the two cleaning rollers is also provided with a multi-faceted cleaning wiping plate parallel to it. The two ends of the multi-faceted cleaning wiping plate are intermittently rotatably mounted on the frame around its axes, and each side of the multi-faceted cleaning wiping plate can be detachably fitted with a cleaning wiping cotton arranged along its length direction. In the cleaning mechanism corresponding to the precision cutting mechanism, the discharge side of the multi-faceted cleaning wiping plate away from the corresponding cleaning roller is also provided with a wind plate parallel to it. The two ends of the wind plate are mounted on the frame, and the openings of the two corresponding wind plates are opposite each other.

[0028] By adopting the above technical solution, the aluminum strip passes sequentially between two cleaning rollers, between two multi-faceted cleaning wipers, and between two air plates. The cleaning wiper sleeve performs a first cleaning of the aluminum strip surface, the cleaning wiper cotton performs a second cleaning, and the air plates dry the aluminum strip surface. This two-stage cleaning and one-stage drying process effectively removes residual emulsion, debris, dust, and other impurities from the rolling and trimming processes, achieving high-precision cleaning of the aluminum strip surface. This avoids poor surface quality caused by contamination during annealing, and the aluminum strip can be directly stored or proceed to the next process after rewinding without needing to be re-unwound and cleaned.

[0029] In summary, the present invention has the following beneficial effects: 1. This invention forms an integrated production line by sequentially setting up a primary cold rolling mechanism, a rough cutting mechanism, an annealing mechanism, a secondary cold rolling mechanism, and a precision cutting mechanism. Throughout the process, the aluminum strip flows through each mechanism in strip form without repeated rewinding. The aluminum strip undergoes large-scale rough cutting in the intermediate soft-hard stage after the primary cold rolling, and small-scale precision cutting in the hard stage after the secondary cold rolling. The "large-volume rough cutting in the soft state + small-volume precision cutting in the hard state" method achieves graded edge quality control of the aluminum strip, thereby avoiding quality defects such as edge burrs, micro-cracks, and plate shape damage that are easily generated by large-scale cutting in the hard state, and improving the edge cutting quality of the aluminum strip. 2. The roughing mechanism of this invention includes a roughing unit and a roughing standby unit, and the fine cutting mechanism includes a fine cutting unit and a fine cutting standby unit. Both the roughing unit and the fine cutting unit include two sets of rotating disc shears that can work alternately at 180°. The standby unit can directly take over the work when the corresponding roughing unit / fine cutting unit changes blades, so as to realize the uninterrupted operation of roughing and fine cutting. The cutting work is not affected while the blade is changed online, ensuring the continuity of production. The standby unit is located at the rear end to avoid the problem of missing cuts and to ensure the two-stage cutting quality of the aluminum strip. 3. In this invention, both the roughing mechanism and the fine cutting mechanism are multi-dimensional adjustable structures, which can achieve precise adjustment of the lateral position, shearing angle, shearing gap, and cutting edge width, and can be adapted to the production of aluminum strips with different widths, thicknesses and cutting edge allowances; at the same time, the fine cutting mechanism with hard edge cutting is equipped with a lubrication unit to lubricate the working disc shear, improve the service life of the disc shear, and further ensure production continuity. 4. This invention, by directly setting an annealing mechanism between the primary and secondary cold rolling processes, allows the aluminum strip to be annealed directly along an S-shaped winding path in a strip shape, effectively extending the heating path. Furthermore, the use of contact-heated annealing guide rollers, combined with a uniform flow fan and air inlet for forced hot air circulation, effectively improves annealing efficiency, ensures uniform annealing of the aluminum strip, and enhances its quality. Simultaneously, the annealing guide rollers can slide vertically at both ends, and with the centering and correction unit, can adapt to changes in aluminum strip tension in real time, dynamically correcting the aluminum strip's trajectory and preventing deviation or offset during the annealing process. This ensures the aluminum strip remains centered and travels smoothly throughout the entire process, avoiding problems such as unilateral stretching and localized deformation. 5. In this invention, by setting up a centering and anti-bullet mechanism and a centering and correction unit in the annealing mechanism, multi-position centering of the aluminum strip is achieved throughout the entire process, suppressing the aluminum strip from running off track, vibrating, bouncing, and curling edges, avoiding deviation during the conveying of the aluminum strip, and ensuring the stability of the aluminum strip during the two edge cutting and annealing processes. 6. This invention cleans the aluminum strip on the output side of the roughing and finishing cutting mechanisms by setting up a cleaning mechanism. The cleaning mechanism includes two cleaning processes and one drying process, which effectively removes the emulsion, debris and other impurities remaining on the surface of the aluminum strip after the two cold rolling processes. This ensures that the aluminum strip enters the annealing mechanism in a clean state for annealing and is finally wound up. This avoids poor surface quality caused by dirt on the aluminum strip during annealing. After the aluminum strip is wound up, it can be directly put into storage or enter a process without having to be unwound and cleaned again. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an integrated cold rolling annealing device for online grading and trimming of aluminum strip; Figure 2 This is a schematic diagram of the structure between the primary cold rolling mechanism and the roughing mechanism in an integrated cold rolling and annealing device for online grading and edge trimming of aluminum strip; Figure 3 This is a partial structural diagram of the roughing mechanism in an integrated cold rolling annealing device for online grading and edge trimming of aluminum strip; Figure 4 This is a schematic diagram of the centering and cleaning mechanism between the roughing mechanism and the annealing mechanism in an integrated cold rolling annealing device for online grading and edge trimming of aluminum strip; Figure 5 This is a schematic diagram of the internal structure of the annealing mechanism in an integrated cold rolling annealing device for online grading and trimming of aluminum strip; Figure 6This is a schematic diagram of the structure between the secondary cold rolling mechanism and the cleaning mechanism at the discharge end of the precision cutting mechanism in an integrated cold rolling and annealing device for online grading and edge trimming of aluminum strip. Figure 7 This is a schematic diagram of the precision cutting mechanism and the centering and anti-bullet mechanism between the precision cutting mechanism and the annealing mechanism in an integrated cold rolling annealing device for online grading and edge trimming of aluminum strip; Figure 8 This is a partial structural diagram of the precision cutting mechanism in an integrated cold rolling annealing device for online grading and edge trimming of aluminum strip.

[0031] In the diagram, 1. Primary cold rolling mechanism; 11. Primary cold rolling roll group; 12. Primary cold rolling guide roll; 2. Roughing mechanism; 21. Roughing frame; 22. Roughing unit; 221. Roughing turntable; 222. Roughing guide frame; 223. Roughing seat; 224. Roughing shaft; 225. Roughing disc shear; 23. Roughing spare unit; 231. Roughing spare guide frame; 232. Roughing spare seat; 233. Roughing spare shaft; 234. Roughing spare disc shear; 24. Roughing locking component; 241. Locking sleeve; 242. Electromagnetic suction ring; 243. Electric... Magnetic suction rod; 244, adjusting screw sleeve; 245, ranging sensor; 3, cleaning mechanism; 31, cleaning roller; 32, cleaning wipe sleeve; 33, multi-faceted cleaning wipe plate; 34, cleaning wipe cotton; 35, air plate; 4, annealing mechanism; 41, annealing box; 411, feed inlet; 412, discharge outlet; 42, adjusting limit unit; 421, adjusting plate; 422, adjusting limit roller; 4221, adjusting limit groove; 423, elastic heat-insulating curtain; 43, annealing guide roller; 431, heating roller; 432, heat-conducting sleeve; 44, centering and correction unit. 45. Centering and straightening plate; 451. Centering and straightening guide groove; 452. Uniform flow air outlet; 46. Uniform flow fan; 461. Heat insulation protective cover; 5. Secondary cold rolling mechanism; 51. Secondary cold rolling roll group; 52. Secondary cold rolling guide roll; 6. Precision cutting mechanism; 61. Precision cutting frame; 62. Precision cutting unit; 621. Precision cutting turntable; 622. Precision cutting guide frame; 623. Precision cutting seat; 624. Precision cutting shaft; 625. Precision cutting disc shear; 63. Precision cutting spare unit; 631. Precision cutting spare guide frame; 632. Precision cutting spare seat; 633. Precision cutting spare unit 634. Precision cutting spare disc shear; 64. Precision cutting locking component; 65. Lubrication unit; 651. Lubricating oil tank; 652. Oil supply pipeline; 653. Lubrication frame; 654. Lubrication groove; 655. Oil storage lubricating cotton; 7. Waste collection mechanism; 71. Discharge guide pipe; 72. Receiving guide seat; 73. Receiving shaft; 74. Discharge guide roller; 8. Centering bulletproof mechanism; 81. Centering bulletproof frame; 82. Centering bulletproof seat; 83. Centering bulletproof roller; 84. Centering bulletproof groove; 85. Centering bulletproof pressure roller; 9. Frame; 10. Control console. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0033] An integrated cold rolling annealing apparatus for online grading and edge trimming of aluminum strip, such as Figure 1 As shown, the assembly includes a frame 9 arranged along the aluminum strip conveying direction and a primary cold rolling mechanism 1, a roughing mechanism 2, an annealing mechanism 4, a secondary cold rolling mechanism 5, and a finishing mechanism 6 arranged sequentially along the length of the frame 9. Both the roughing mechanism 2 and the finishing mechanism 6 are equipped with waste collection mechanisms 7. Both sides of the roughing mechanism 2 and the finishing mechanism 6 are equipped with centering and anti-bullet-proof mechanisms 8 for centering and protecting the aluminum strip. A cleaning mechanism 3 for cleaning the surface of the aluminum strip is provided between the annealing mechanism 4 and the roughing mechanism 2, and on the side of the finishing mechanism 6 away from the secondary cold rolling mechanism 5. like Figure 1 As shown, the aluminum strip passes through the aforementioned mechanisms in a strip form. The first cold rolling unit 1 rolls the aluminum strip to an intermediate soft-hard state. Then, the roughing unit 2 performs a large-scale roughing trimming to remove edge micro-cracks, uneven work hardening, and initial burrs generated during the first cold rolling. The aluminum strip then enters the annealing unit 4 for annealing, accelerating the annealing efficiency and improving annealing uniformity. Next, the second cold rolling unit 5 rolls the annealed aluminum strip to a fully hardened state. Finally, the finishing unit 6 performs a small-scale finishing trimming to remove extremely small burrs newly formed during the second cold rolling process. This avoids large-volume trimming in the fully hardened state, limiting the hardened edge trimming to a very small range, thereby controlling the height of the burrs on the finished product edge and improving the quality of the aluminum strip.

[0034] like Figure 1 As shown, during this process, the waste collection mechanism 7 collects the waste edges after trimming to prevent the accumulation of waste edge projectiles, which could easily scratch the aluminum strip or affect the normal operation of the roughing mechanism 2 and the finishing mechanism 6. Multiple sets of centering and anti-collision mechanisms 8 achieve multi-position centering of the aluminum strip throughout the entire process, preventing deviation during the aluminum strip transport and ensuring the processing quality of the aluminum strip by each mechanism. Multiple sets of cleaning mechanisms 3 are used to remove residual emulsion, debris, and other impurities from the aluminum strip surface after the two cold rolling processes, ensuring that the aluminum strip enters the annealing mechanism 4 in a clean state for annealing and final winding. This avoids poor surface quality caused by contamination of the aluminum strip during annealing, and allows the aluminum strip to be directly stored or proceed to the next process after winding without needing to be re-unwound and cleaned.

[0035] like Figure 1 As shown, in this embodiment, a control console 10 for controlling the automated operation and linkage of the above-mentioned mechanisms is provided on one side of the frame 9. The control console 10 adopts automatic control technology such as PLC, which is a mature existing technology and will not be described in detail. Among them, as... Figure 2 and Figure 6As shown, the primary cold rolling mechanism 1 includes a primary cold rolling roll group 11 and several primary cold rolling guide rolls 12 arranged along the width direction of the frame 9. The secondary cold rolling mechanism 5 includes a secondary cold rolling roll group 51 and several secondary cold rolling guide rolls 52 arranged along the width direction of the frame 9. Their basic structure and working principle are the same as those in the prior art, and will not be described in detail. Only a simple illustration is shown in the figure. In addition, the drive structures involving horizontal and vertical adjustment in the following mechanisms, unless otherwise specified, all adopt conventional drives such as guide rail screws and drive cylinders. The drives involving rotation also adopt motor structures, or adaptably combine with reduction structures. These will not be described in detail below, and only a simple illustration is shown in the figure.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, the roughing mechanism 2 includes two roughing frames 21 arranged on both sides of the frame 9 along its length. The two roughing frames 21 are synchronously and oppositely slidably mounted on the frame 9 along its width, and are connected by a guide rail screw structure that drives them to slide synchronously and oppositely. On the two roughing frames 21, there are roughing units 22 and roughing spare units 23 located on both sides of the aluminum strip along its length, respectively, for trimming the aluminum strip. The roughing spare unit 23 is located on the side of the roughing unit 22 closer to the annealing mechanism 4, and takes over the trimming work from the roughing unit 22 when the roughing unit 22 changes blades.

[0037] like Figure 2 and Figure 3 As shown, each roughing unit 22 includes a roughing turntable 221 slidably mounted on the roughing frame 21 along the width direction of the frame 9. The roughing turntable 221 is connected to a telescopic cylinder that drives its sliding. A vertically arranged roughing guide 222 is provided on the roughing turntable 221. The bottom of the roughing guide 222 is rotatably mounted on the roughing turntable 221, and its rotation axis is vertically arranged and connected to a turntable motor that drives its rotation. Two roughing seats 223 are vertically slidably mounted on the roughing guide 222. A guide rod screw structure that drives the two roughing seats 223 to slide synchronously in opposite directions is connected between the two roughing seats 223. Each roughing seat 223 is provided with a roughing shaft 224 arranged along the width direction of the frame 9. The roughing shaft 224 is rotatably mounted on the roughing seat 223 around its axis, and its two ends are respectively located on both sides of the roughing guide 222. The coarse cutting base 223 houses a hollow coarse cutting motor that drives the coarse cutting shaft 224 to rotate. The coarse cutting shaft 224 and the coarse cutting hollow motor are coaxially arranged. Two coaxial coarse cutting disc shears 225 are mounted at both ends of the coarse cutting shaft 224. The two coarse cutting disc shears 225, located on the same side of the coarse cutting frame 21, cooperate vertically to cut the aluminum strip. The coarse cutting disc shears 225 are slidably mounted on the coarse cutting shaft 224 along their axis and are connected to a coarse cutting locking member 24 to fix their position.

[0038] like Figure 2 and Figure 3As shown, the roughing spare unit 23 includes a vertically arranged roughing spare guide frame 231. Two roughing spare seats 232 are vertically slidably mounted on the roughing spare guide frame 231, and a guide rod screw structure is connected between the two roughing spare seats 232 to drive them to slide synchronously in opposite directions. A roughing spare shaft 233, which is arranged along the width direction of the frame 9, is rotatably mounted on the side of each roughing spare seat 232 near the aluminum strip. The roughing spare shaft 233 is connected to a roughing motor that drives its rotation. A roughing spare disc shear 234, coaxial with the roughing spare seat 232, is mounted on the end of the roughing spare shaft 233 away from the roughing spare seat 232. The roughing spare disc shear 234 is slidably mounted on the roughing spare shaft 233 along its axis and is also fixed in position by the roughing locking member 24. The two roughing spare disc shears 234 cooperate vertically to cut the aluminum strip.

[0039] like Figure 2 and Figure 3 As shown, in the coarse cutting unit 22, two vertically sliding coarse cutting seats 223 are used to adjust the distance between the upper and lower coarse cutting disc shears 225. The coarse cutting disc shears 225 slide circumferentially along the coarse cutting axis 224 to adjust the lateral clearance between the two coarse cutting disc shears 225, and the position of the coarse cutting disc shears 225 on the coarse cutting axis 224 is fixed by the coarse cutting locking member 24 to meet the cutting edge requirements of different parameters. The coarse cutting spare unit 23 works similarly. In each coarse cutting unit 22, the two sets of coarse cutting disc shears 225 on both sides of the coarse cutting guide 222 serve as backups for each other, and the coarse cutting backup unit 23 also serves as a backup for the coarse cutting unit 22. Both are set on the coarse cutting frame 21. When one set of coarse cutting disc shears 225 working in the coarse cutting unit 22 wears out, the coarse cutting backup unit 23 directly takes over the work, while the coarse cutting turntable 221 slides away from the working position. Then, the coarse cutting guide 222 rotates 180° as a whole, rotating the other set of coarse cutting disc shears 225 to the working position. The coarse cutting turntable 221 then slides back to its original position, the coarse cutting unit 22 continues to work, and the coarse cutting backup unit 23 stops working.

[0040] like Figure 7 and Figure 8 As shown, the precision cutting mechanism 6 includes precision cutting frames 61 arranged on both sides of the length direction of the frame 9. The two precision cutting frames 61 are synchronously and oppositely slidably installed on the frame 9 along the width direction of the frame 9. The two precision cutting frames 61 are respectively provided with a precision cutting unit 62 and a precision cutting spare unit 63 located on both sides of the length direction of the aluminum strip for cutting the aluminum strip. The precision cutting spare unit 63 is located on the side of the precision cutting unit 62 away from the secondary cold rolling mechanism 5, and takes over the cutting work of the precision cutting unit 62 when the precision cutting unit 62 changes blades.

[0041] like Figure 7 and Figure 8As shown, each precision cutting unit 62 includes a precision cutting turntable 621 slidably mounted on a precision cutting frame 61 along the width direction of the frame 9. The precision cutting turntable 621 is connected to a telescopic cylinder that drives its sliding. A vertically arranged precision cutting guide 622 is provided on the precision cutting turntable 621. The bottom of the precision cutting guide 622 is rotatably mounted on the precision cutting turntable 621, and its rotation axis is vertically arranged and connected to a turntable motor that drives its rotation. Two precision cutting seats 623 are vertically slidably mounted on the precision cutting guide 622. A guide rod screw structure that drives the two precision cutting seats 623 to slide synchronously in opposite directions is connected between the two precision cutting seats 623. Each precision cutting seat 623 is provided with a precision cutting shaft 624 arranged along the width direction of the frame 9. The precision cutting shaft 624 is rotatably mounted on the precision cutting seat 623 around its axis, and its two ends are respectively located on both sides of the precision cutting guide 622. The precision cutting base 623 houses a hollow precision cutting motor that drives the precision cutting shaft 624 to rotate. The precision cutting shaft 624 and the hollow precision cutting motor are coaxially arranged. Two coaxial precision cutting disc shears 625 are mounted at both ends of the precision cutting shaft 624. The two precision cutting disc shears 625, located on the same side of the precision cutting frame 61, cooperate vertically to cut the aluminum strip. The precision cutting disc shears 625 are slidably mounted on the precision cutting shaft 624 along their axis and are connected to a precision cutting locking member 64 to fix their position.

[0042] like Figure 7 and Figure 8 As shown, the precision cutting spare unit 63 includes a vertically arranged precision cutting spare guide frame 631. Two precision cutting spare seats 632 are vertically slidably mounted on the precision cutting spare guide frame 631. A guide rod screw structure is connected between the two precision cutting spare seats 632 to drive them to slide synchronously in opposite directions. A precision cutting spare shaft 633, which is positioned and rotatably mounted on the side of each precision cutting spare seat 632 near the aluminum strip, is arranged along the width direction of the frame 9. The precision cutting spare shaft 633 is connected to a precision cutting motor that drives its rotation. A precision cutting spare disc shear 634, coaxial with the precision cutting spare seat 632, is mounted on the end of the precision cutting spare shaft 633. The precision cutting spare disc shear 634 is slidably mounted on the precision cutting spare shaft 633 along its axis and is also fixed in position by a precision cutting locking member 64. The two precision cutting spare disc shears 634 cooperate vertically to cut the aluminum strip.

[0043] like Figure 2 , 3 As shown in Figures 7 and 8, the basic structure and working principle of the precision cutting mechanism 6 are the same as those of the roughing mechanism 2, except that the cutting edge gap of the precision cutting mechanism 6 is smaller than that of the roughing mechanism 2. Furthermore, both the precision cutting disc shear 625 and the precision cutting spare disc shear 634 are made of carbide, such as... Figure 7 and Figure 8As shown, a lubrication unit 65 is configured between the precision cutting unit 62 and the precision cutting standby unit 63. The lubrication unit 65 provides precise, uniform, and continuous online lubrication to the cutting edges of the precision cutting disc shear 625 or the precision cutting standby disc shear 634 in operation, effectively reducing the shearing friction loss of the disc shear, reducing edge scratches and burr defects of the aluminum strip, while avoiding ineffective lubrication in non-working positions, saving lubrication consumables, and improving the service life of the disc shear and the cutting quality of the aluminum strip.

[0044] Specifically, such as Figure 7 and Figure 8 As shown, the lubrication unit 65 includes a lubrication frame 653 disposed on each precision cutting frame 61 and located between the corresponding precision cutting unit 62 and precision cutting standby unit 63. Two lubrication grooves 654 are provided on the lubrication frame 653 along the length of the frame 9. The lubrication grooves 654 are slidably mounted on the lubrication frame 653 along the length of the frame 9 and are connected to a telescopic cylinder that drives their sliding. The two lubrication grooves 654 are arranged vertically and form a U-shaped structure with their openings facing each other. Oil-retaining lubricating cotton 655 is disposed within the opening of the lubrication groove 654. Lubricating oil tanks 651 are respectively provided on both sides of the frame 9. Each lubricating oil tank 651 is connected to an oil supply pipe 652. The end of the oil supply pipe 652 away from the lubricating oil tank 651 is connected to the two lubrication grooves 654 located on the same side, continuously supplying oil to the oil-retaining lubricating cotton 655.

[0045] like Figure 7 and Figure 8 As shown, under normal conditions, the two lubrication grooves 654 located on the same side correspond to and cooperate with the two precision cutting disc shears 625 working in the precision cutting unit 62, providing lubrication for the two precision cutting disc shears 625. When the precision cutting standby unit 63 takes over the work of the precision cutting unit 62, the two lubrication grooves 654 located on the same side slide synchronously along the length of the frame 9 until the two precision cutting standby disc shears 634 enter their interiors and come into contact with the oil-retaining lubricating cotton 655, providing lubrication for the two precision cutting standby disc shears 634, and disengaging from the precision cutting disc shears 625 to avoid affecting the repositioning of the two sets of precision cutting disc shears 625.

[0046] In this embodiment, as Figure 3 and Figure 8 As shown, the coarse cutting locking component 24 and the fine cutting locking component 64 have the same structure. Both include a locking sleeve 241 coaxially arranged with the corresponding coarse cutting disc shear 225 / coarse cutting spare disc shear 234 / fine cutting disc shear 625 / fine cutting spare disc shear 634. An electromagnetic suction ring 242 is embedded in the inner wall of the locking sleeve 241. An electromagnetic suction rod 243 integrally formed with the corresponding coarse cutting shaft 224 / coarse cutting spare shaft 233 / fine cutting shaft 624 / fine cutting spare shaft 633 and cooperating with the electromagnetic suction ring 242 is provided. By using the electromagnetic attraction of the electromagnetic suction ring 242 and the electromagnetic suction rod 243, the position of the disc shear on the corresponding cutting shaft is fixed.

[0047] like Figure 3 and Figure 8 As shown, the sliding adjustment structures of the coarse cutting disc shear 225, the coarse cutting spare disc shear 234, the fine cutting disc shear 625, and the fine cutting spare disc shear 634 on their corresponding coarse cutting shafts 224, 233, 624, and 633 are identical. All have a coaxially arranged adjusting screw sleeve 244 connected to one end of the locking sleeve 241 near the corresponding coarse cutting seat 223, 232, 623, or 632. The adjusting screw sleeve 244 is threadedly connected to the corresponding coarse cutting shaft 224, 233, 624, or 633. The threaded adjustment of the adjusting screw sleeve 244, combined with the electromagnetic attraction of the locking element, achieves strong locking of the disc shear, effectively resisting disc shear displacement caused by shearing vibration and ensuring the stability of the disc shear under high-speed shearing conditions.

[0048] Among them, such as Figure 3 and Figure 8 As shown, a distance sensor 245 is installed on the side of the coarse cutting seat 223 / coarse cutting spare seat 232 / fine cutting seat 623 / fine cutting spare seat 632 near the locking sleeve 241. The distance sensor 245 is used to measure the distance between its probe and the corresponding side wall of the disc shear, thereby realizing high-precision control of the lateral clearance adjustment of the disc shear.

[0049] In this embodiment, as Figure 2 , 3 As shown in Figures 7 and 8, the waste collection mechanism 7 includes a discharge conduit 71 disposed at the discharge end of the corresponding coarse cutting spare unit 23 or fine cutting spare unit 63. The discharge conduit 71 is inclined downward along the length of the frame 9. Two receiving guides 72, each corresponding to one of the discharge conduits 71, are installed on the frame 9. A receiving shaft 73, which is positioned and rotatably mounted on the receiving guide 72 and is disposed along the width of the frame 9, slides synchronously and in opposite directions along the width of the frame 9, and a screw structure is provided between them to drive their opposite sliding.

[0050] like Figure 2 , 3 As shown in Figures 7 and 8, the aluminum strip scrap cut by the roughing mechanism 2 and the finishing mechanism 6 is quickly discharged through the downwardly inclined discharge guide 71 and wound up by the take-up shaft 73. During the take-up process, the double-sided take-up guide seats 72 slide synchronously and in opposite directions along the width of the frame 9, driving the take-up shaft 73 to evenly wind up the scrap, effectively preventing scrap accumulation or flying debris from affecting the cutting work and production safety. A discharge guide roller 74 is also provided at the inlet of the discharge guide 71, arranged along the width of the frame 9. The end of the discharge guide 71 away from the aluminum strip side is rotatably mounted on the adjacent roughing spare guide 231 or finishing spare guide 631 to redirect and guide the scrap edge.

[0051] In this embodiment, as Figure 1 and Figure 5 The annealing mechanism 4 includes an annealing box 41 housed within the frame 9. The annealing box 41 has a feed inlet 411 on the side near the roughing mechanism 2 and a discharge outlet 412 on the side near the secondary cold rolling mechanism 5. Several annealing guide rollers 43 are arranged within the annealing box 41 along the length of the frame 9 and along the width of the frame 9. The aluminum strip passes over the annealing guide rollers 43 in an S-shape. For example... Figure 5 As shown, each annealing guide roller 43 includes a coaxially arranged heating roller 431 and a heat-conducting sleeve 432. The heating roller 431 is installed inside the heat-conducting sleeve 432 to achieve contact heating and annealing of the aluminum strip, further improving the annealing efficiency. Additionally, both ends of the annealing guide roller 43 are vertically slidably installed inside the annealing chamber 41 and connected to lifting cylinders that drive its lifting and lowering. The lifting cylinders are located outside the annealing chamber 41, while the telescopic cylinders are located inside the annealing chamber 41 and are made of high-temperature resistant material. The annealing guide roller 43 can be driven to lift and lower according to actual needs to extend the annealing length and time of the aluminum strip in the annealing chamber 41, or to adjust the tension of the aluminum strip.

[0052] Among them, such as Figure 5 As shown, both the inlet 411 and outlet 412 of the annealing chamber 41 are equipped with adjustment limiting units 42 for adjusting the size of their openings along the width direction of the frame 9. Specifically, the adjustment limiting unit 42 includes adjustment plates 421 arranged at both ends of the inlet 411 / outlet 412 along the width direction of the frame 9. The ends of the adjustment plates 421 at both ends of the inlet 411 / outlet 412 that are far apart from each other are slidably mounted on the annealing chamber 41 along their length direction, and are connected by a bidirectional cylinder that drives them to slide synchronously in opposite directions. The height of the adjustment plates 421 is greater than the opening height of the inlet 411 / outlet 412 and can cover the inlet 411 / outlet 412. The two adjustment plates 421 can be driven to slide according to the width of the aluminum strip to adjust the opening of the inlet 411 / outlet 412, thereby reducing heat dissipation from the annealing chamber 41. like Figure 5 As shown, at the ends of the adjusting plates 421 at both ends of the feed inlet 411 and the discharge outlet 412, a vertically oriented adjusting limit roller 422 is rotatably mounted. The outer wall of the adjusting limit roller 422 has an adjusting limit groove 4221 coaxial with it. When the distance between the two adjusting plates 421 at the feed inlet 411 and the discharge outlet 412 is adjusted according to the width of the aluminum strip, the two sides of the aluminum strip are engaged in the adjusting limit grooves 4221 on the corresponding adjusting limit rollers 422, thereby achieving precise positioning of the two sides of the aluminum strip and preventing the aluminum strip from deviating.

[0053] In addition, such as Figure 5As shown, at the end of the adjusting plates 421 at both ends of the feed port 411 / discharge port 412 that are close to each other, there is also an elastic heat-insulating curtain 423 located between the two adjusting limit rollers 422. There are two elastic heat-insulating curtains 423 at the top and bottom. The aluminum strip passes through the two elastic heat-insulating curtains 423, which further reduces the opening gap of the feed port 411 / discharge port 412, prevents the high temperature hot gas in the annealing box 41 from overflowing and the cold air from entering, stabilizes the internal temperature environment of the annealing box 41, reduces production energy consumption, and can also further clean the upper and lower surfaces of the aluminum strip.

[0054] In this embodiment, as Figure 5 As shown, an alignment and correction unit 44 for centering and correcting the two sides of the aluminum strip is also provided in the annealing chamber 41, and the alignment and correction unit 44 is correspondingly matched with several annealing guide rollers 43. Specifically, the alignment and correction unit 44 includes alignment and correction plates 45 arranged on both sides of the annealing guide rollers 43 along the length direction of the frame 9. The two alignment and correction plates 45 are synchronously and oppositely slidably installed in the annealing chamber 41 along the width direction of the frame 9, and are connected to a bidirectional cylinder that drives them to slide synchronously and oppositely. A heat-insulating protective cover is provided outside the bidirectional cylinder. Each alignment and correction plate 45 is provided with several alignment and correction guide grooves 451 corresponding one-to-one with the annealing guide rollers 43 along the length direction of its frame 9. The alignment and correction guide grooves 451 are vertically arranged, and the two ends of the annealing guide rollers 43 pass through the corresponding alignment and correction guide grooves 451 and are vertically and slidably installed in the alignment and correction guide grooves 451.

[0055] like Figure 5 As shown, the centering and correction guide groove 451 guides the annealing guide roller 43 to make way and slide vertically. According to the width of the aluminum strip, the two centering and correction plates 45 are driven to slide synchronously and in opposite directions along the width direction of the frame 9. The two centering and correction plates 45 center and correct the aluminum strip from both sides to prevent the aluminum strip from shifting in the annealing box 41, ensuring the fit between the aluminum strip and the annealing guide roller 43, and ensuring the tension stability and straight conveying of the aluminum strip.

[0056] Among them, such as Figure 5 As shown, several vertically arranged uniform air vents 452 are provided on the side of the two centering and correction plates 45 that are close to each other, and are located between adjacent centering and correction guide grooves 451. On the side of the two centering and correction plates 45 that are far apart from each other, uniform air fans 46 are provided, each corresponding to one of the uniform air vents 452, and the uniform air fans 46 are covered with heat insulation protective covers 461. By using the uniform air vents 452 and the matching uniform air fans 46, a forced hot air circulation channel is formed inside the annealing box 41, which ensures that the heat is evenly distributed inside the annealing box 41, avoids large local temperature differences and uneven heating of the aluminum strip, ensures the uniformity of aluminum strip annealing, and thus improves the quality of aluminum strip.

[0057] In this embodiment, as Figure 2 , 4As shown in Figures 6 and 7, the centering bulletproof mechanism 8 includes centering bulletproof frames 81 arranged on both sides of the frame 9 along its length. The two centering bulletproof frames 81 are synchronously and oppositely slidably mounted on the frame 9 along its width, and are connected by a bidirectional cylinder that drives their synchronous and oppositely slidable movement. A centering bulletproof seat 82 is provided on the side of the centering bulletproof frame 81 near the aluminum strip, along the length of the frame 9. Several centering bulletproof rollers 83 are arranged vertically along their axes on the centering bulletproof seat 82, and are rotatably mounted on the centering bulletproof seat 82 around their axes. The outer wall of the rollers is provided with a centering bulletproof groove 84 coaxially arranged with the rollers. According to the width of the aluminum strip, the centering bulletproof frames 81 on both sides slide synchronously in opposite directions, and the distance between the two centering bulletproof frames 81 is adjusted so that the edge of the aluminum strip is inserted into the centering bulletproof grooves 84 on the surface of several centering bulletproof rollers 83 on both sides of the centering bulletproof seat 82, thereby limiting the aluminum strip on both sides and preventing the aluminum strip from moving left and right and running off-center during the cutting process.

[0058] Among them, such as Figure 2 , 4 As shown in Figures 6 and 7, the centering bulletproof mechanism 8 also includes two centering bulletproof pressure rollers 85 arranged along the width direction of the frame 9 and corresponding vertically. The centering bulletproof pressure rollers 85 are located on the side of the centering bulletproof seat 82 near the corresponding roughing mechanism 2 or fine cutting mechanism 6. The centering bulletproof pressure rollers 85 are vertically slidably mounted on the frame 9 and are connected to a lifting cylinder that drives them to slide vertically. The two centering bulletproof pressure rollers 85 clamp the aluminum strip from the upper and lower surfaces to prevent bulletproofing, suppressing bouncing, arching, or warping of the aluminum strip during the edge cutting process, ensuring edge cutting accuracy and production safety, and avoiding damage to the strip shape.

[0059] In this embodiment, as Figure 1 , 4 As shown in Figure 6, the cleaning mechanism 3 includes two cleaning rollers 31 arranged along the width of the frame 9. The cleaning rollers 31 are arranged vertically and vertically, and both ends are rotatably mounted on the frame 9 around their axes. Each cleaning roller 31 is fitted with a cleaning wiping sleeve 32 coaxial with it. On the discharge side of the two cleaning rollers 31, there are also multi-faceted cleaning wiping plates 33 parallel to them. The two ends of the multi-faceted cleaning wiping plates 33 are intermittently mounted on the frame 9 around their axes. Each side of the multi-faceted cleaning wiping plate 33 can be detachably fitted with cleaning wiping cotton 34 arranged along its length. The intermittent rotation of the multi-faceted cleaning wiping plate 33 can make multiple cleaning wiping cotton 34 work alternately to ensure the cleaning effect. In addition, in the cleaning mechanism 3 corresponding to the precision cutting mechanism 6, the discharge side of the multi-faceted cleaning wiping plate 33 away from the corresponding cleaning roller 31 is also provided with air plates 35 parallel to it. The two ends of the air plates 35 are mounted on the frame 9, and the openings of the two corresponding air plates 35 are opposite each other.

[0060] like Figure 1 , 4As shown in Figure 6, the aluminum strip passes sequentially between two cleaning rollers 31, between two multi-faceted cleaning wipers 33, and between two air plates 35. The cleaning wiper sleeve 32 performs a first cleaning of the aluminum strip surface, the cleaning wiper cotton 34 performs a second cleaning of the aluminum strip surface, and the air plate 35 dries the aluminum strip surface. In this way, the emulsion, debris, dust and other impurities remaining on the aluminum strip surface after the rolling and trimming processes are effectively removed through two cleaning processes, achieving high-precision cleaning of the aluminum strip surface. This avoids poor surface quality caused by dirt on the aluminum strip during annealing. The cleaning mechanism 3 corresponding to the precision cutting mechanism 6 also dries the aluminum strip. After the aluminum strip is coiled, it can be directly put into storage or enter a process without the need for re-coiling and cleaning.

[0061] The working principle and usage method of this invention are as follows: The aluminum strip is first rolled to an intermediate soft-hard state by a primary cold rolling unit 1, and then undergoes a large rough trimming by a coarse cutting unit 2 to remove cracks, uneven hardening, and initial burrs caused by the primary cold rolling. Afterwards, the aluminum strip passes through a cleaning unit 3 to remove surface emulsion and debris before entering an annealing unit 4. The annealing chamber 41 contains a liftable annealing guide roller 43 and a uniform flow fan 46 to achieve efficient and uniform annealing of the aluminum strip. Simultaneously, a centering and correction unit 44 within the annealing chamber 41 corrects any deviation in the aluminum strip throughout the process, ensuring straight conveying and stable tension. The annealed aluminum strip is then rolled to a fully hard state by a secondary cold rolling unit 5, and then undergoes a small fine trimming by a precision cutting unit 6 to remove newly formed micro-burrs caused by the secondary cold rolling. Finally, it is cleaned and dried by a cleaning assembly.

[0062] At the front and rear ends of roughing and finishing, the centering and anti-bullet mechanism 8 limits the aluminum strip to prevent deviation and bulletproofing, while the waste collection mechanism 7 collects the waste edges from both roughing and finishing, preventing waste accumulation and bulletproofing. Additionally, the backup unit can directly take over the work when changing blades in the corresponding roughing unit 22 / finishing unit 62, enabling uninterrupted operation of both roughing and finishing. Online blade changes do not affect the continued edge-cutting work, ensuring production continuity. Furthermore, the backup unit is located at the rear end to avoid missed cuts. Simultaneously, the lubrication unit 65 lubricates the disc shears operating in the finishing unit 62 or the backup finishing unit 63, improving the disc shears' service life and finishing quality.

[0063] Throughout the process, the aluminum strip flows through the various mechanisms in strip form without repeated rewinding. In the intermediate soft-hard stage after the first cold rolling, the aluminum strip undergoes large-scale rough cutting using the rough cutting mechanism 2. In the hard stage after the second cold rolling, the aluminum strip undergoes small-scale fine cutting using the fine cutting mechanism 6. The method of "large-volume rough cutting in the soft state + small-volume fine cutting in the hard state" is used to achieve graded edge quality control of the aluminum strip, thereby avoiding quality defects such as edge burrs, micro-cracks, and plate shape damage that are easily generated by large-scale cutting in the hard state, and improving the edge cutting quality of the aluminum strip.

[0064] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An integrated cold rolling annealing device for online grading and edge trimming of aluminum strip, characterized in that: The machine includes a frame (9) and a primary cold rolling mechanism (1), a rough cutting mechanism (2), an annealing mechanism (4), a secondary cold rolling mechanism (5), and a precision cutting mechanism (6) arranged sequentially along the length of the frame (9). The rough cutting mechanism (2) and the precision cutting mechanism (6) are both equipped with a waste collection mechanism (7). The rough cutting mechanism (2) and the precision cutting mechanism (6) are both equipped with a centering and bulletproof mechanism (8) for centering and bulletproofing the aluminum strip on both sides. The annealing mechanism (4) and the rough cutting mechanism (2) are both equipped with a cleaning mechanism (3) for cleaning the surface of the aluminum strip on the side away from the secondary cold rolling mechanism (5) of the precision cutting mechanism (6). The roughing mechanism (2) includes roughing frames (21) arranged on both sides of the length direction of the frame (9). The two roughing frames (21) are synchronously and oppositely slidably installed on the frame (9) along the width direction. The two roughing frames (21) are respectively provided with roughing units (22) located on both sides of the length direction of the aluminum strip to cut the aluminum strip. Each group of roughing units (22) includes a roughing turntable (221) slidably installed on the roughing frame (21) along the width direction of the frame (9). The roughing turntable (221) is provided with a vertically arranged roughing guide (222). The bottom of the roughing guide (222) is rotatably mounted on the roughing turntable (221), and its rotation axis is vertically arranged. Two coarse cutting seats (223) are vertically slidably mounted on the guide frame (222). Each coarse cutting seat (223) is provided with a coarse cutting shaft (224) arranged along the width direction of the frame (9). The coarse cutting shaft (224) is rotatably mounted on the coarse cutting seat (223) around its axis, and its two ends are respectively located on both sides of the coarse cutting guide frame (222). Coarse cutting disc shears (225) are respectively mounted on both ends of the coarse cutting shaft (224) and are coaxial with it. The two coarse cutting disc shears (225) located on the same side of the coarse cutting frame (21) cooperate vertically to cut the aluminum strip. The coarse cutting disc shears (225) are slidably mounted on the coarse cutting shaft (224) along its axis and are connected to a coarse cutting locking member (24) to fix its position. The precision cutting mechanism (6) includes precision cutting frames (61) arranged on both sides of the length direction of the frame (9). The two precision cutting frames (61) are synchronously and oppositely slidably installed on the frame (9) along the width direction. Each of the two precision cutting frames (61) is provided with a precision cutting unit (62) located on both sides of the length direction of the aluminum strip to cut the aluminum strip. Each set of precision cutting units (62) includes a precision cutting turntable (621) slidably installed on the precision cutting frame (61) along the width direction of the frame (9). The precision cutting turntable (621) is provided with a vertically arranged precision cutting guide (622). The bottom of the precision cutting guide (622) is rotatably installed on the precision cutting turntable (621), and its rotation axis is vertically arranged. Two precision cutting seats (623) are vertically slidably mounted on the guide frame (622). Each precision cutting seat (623) is provided with a precision cutting shaft (624) arranged along the width direction of the frame (9). The precision cutting shaft (624) is rotatably mounted on the precision cutting seat (623) around its axis, and its two ends are respectively located on both sides of the precision cutting guide frame (622). Two precision cutting disc shears (625) coaxial with the precision cutting shaft (624) are respectively mounted on both ends of the precision cutting shaft (624). The two precision cutting disc shears (625) located on the same side of the precision cutting frame (61) cooperate vertically to cut the aluminum strip. The precision cutting disc shears (625) are slidably mounted on the precision cutting shaft (624) along its axis and are connected to a precision cutting locking member (64) to fix its position. The roughing frame (21) is provided with a roughing spare unit (23) located on the side of the roughing unit (22) near the annealing mechanism (4), and the roughing spare unit (23) corresponds to the roughing unit (22), and takes over the edge trimming work of the roughing unit (22) when the roughing unit (22) changes its blade; the finishing frame (61) is provided with a finishing spare unit (63) located on the side of the finishing unit (62) away from the secondary cold rolling mechanism (5), and the finishing spare unit (63) corresponds to the finishing unit (62), and takes over the edge trimming work of the finishing unit (62) when the finishing unit (62) changes its blade, and both the finishing unit (62) and the finishing spare unit (63) are equipped with a lubrication unit (65) that cooperates with them. The annealing mechanism (4) includes an annealing box (41) set in the frame (9). The annealing box (41) has a feed port (411) on the side near the roughing mechanism (2) and a discharge port (412) on the side near the secondary cold rolling mechanism (5). Both the feed port (411) and the discharge port (412) are provided with adjustment limiting units (42) for adjusting the size of their openings along the width direction of the frame (9). The annealing box (41) is provided with a number of annealing guide rollers (43) along the length direction of the frame (9). The number of annealing guide rollers (43) are set along the width direction of the frame (9) and are vertically slidably installed in the annealing box (41) at both ends. The aluminum strip passes around the number of annealing guide rollers (43) in an S-shape. The annealing box (41) is provided with a centering and correction unit (44) for centering and correcting the two sides of the aluminum strip. The centering and correction unit (44) is correspondingly matched with the number of annealing guide rollers (43).

2. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: The roughing spare unit (23) includes a vertically arranged roughing spare guide frame (231). Two roughing spare seats (232) are vertically slidably installed on the roughing spare guide frame (231). Each roughing spare seat (232) has a roughing spare shaft (233) arranged along the width direction of the frame (9) rotatably installed on one side near the side of the aluminum strip. A roughing spare disc shear (234) coaxial with the roughing spare seat (232) is installed at the end of the roughing spare shaft (233). The roughing spare disc shear (234) is slidably installed on the roughing spare shaft (233) along its axis and its position is fixed by the roughing locking member (24). The two roughing spare disc shears (234) cooperate to cut the aluminum strip. The precision cutting spare unit (63) includes a vertically arranged precision cutting spare guide (631). Two precision cutting spare seats (632) are vertically slidably installed on the precision cutting spare guide (631). Each precision cutting spare seat (632) has a precision cutting spare shaft (633) arranged along the width direction of the frame (9) and rotatably installed on one side near the aluminum strip. A precision cutting spare disc shear (634) is installed on the end of the precision cutting spare shaft (633) away from the precision cutting spare seat (632). The precision cutting spare disc shear (634) is slidably installed on the precision cutting spare shaft (633) along its axis and its position is fixed by a precision cutting locking member (64). The two precision cutting spare disc shears (634) cooperate to cut the aluminum strip.

3. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: Both the coarse cutting locking component (24) and the fine cutting locking component (64) include a locking sleeve (241) coaxially arranged with the corresponding coarse cutting disc shear (225) / coarse cutting spare disc shear (234) / fine cutting disc shear (625) / fine cutting spare disc shear (634). An electromagnetic suction ring (242) is embedded in the inner wall of the locking sleeve (241). The corresponding coarse cutting shaft (224) / coarse cutting spare shaft (233) / fine cutting shaft (624) / fine cutting spare shaft (633) is provided with an electromagnetic suction rod (243) integrally formed with it and cooperating with the electromagnetic suction ring (242). The locking sleeve (241) 41) One end of the corresponding coarse cutting seat (223) / coarse cutting spare seat (232) / fine cutting seat (623) / fine cutting spare seat (632) is connected to an adjusting screw sleeve (244) that is coaxial with it. The adjusting screw sleeve (244) is threadedly connected to the corresponding coarse cutting shaft (224) / coarse cutting spare shaft (233) / fine cutting shaft (624) / fine cutting spare shaft (633). A distance measuring sensor (245) is installed on the side of the coarse cutting seat (223) / coarse cutting spare seat (232) / fine cutting seat (623) / fine cutting spare seat (632) near the locking sleeve (241).

4. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: The centering bulletproof mechanism (8) includes centering bulletproof frames (81) arranged on both sides of the frame (9) along its length. The two centering bulletproof frames (81) are synchronously and oppositely slidably installed on the frame (9) along its width. The centering bulletproof frame (81) has a centering bulletproof seat (82) arranged along the length of the frame (9) on the side near the aluminum strip. The centering bulletproof seat (82) has a plurality of centering bulletproof rollers (83) arranged vertically along its length. The spring roller (83) is positioned and rotated around its axis on the centering bulletproof seat (82), and its outer wall is provided with a centering bulletproof groove (84) coaxially arranged with it; the centering bulletproof mechanism (8) also includes two centering bulletproof pressure rollers (85) arranged along the width direction of the frame (9) and corresponding to each other. The centering bulletproof pressure rollers (85) are located on the side of the centering bulletproof seat (82) close to the corresponding rough cutting mechanism (2) or fine cutting mechanism (6), and the centering bulletproof pressure rollers (85) are vertically slidably installed on the frame (9).

5. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: The waste collection mechanism (7) includes a discharge conduit (71) set at the discharge end of the corresponding coarse cutting spare unit (23) or fine cutting spare unit (63). The discharge conduit (71) is inclined downward along the length of the frame (9). Two receiving guides (72) are installed on the frame (9) respectively corresponding to the discharge conduit (71). A receiving shaft (73) is rotatably installed on the receiving guide (72) along the width of the frame (9), and the two receiving guides (72) slide synchronously and in opposite directions along the width of the frame (9).

6. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 2, characterized in that: The lubrication unit (65) includes lubricating oil tanks (651) disposed on both sides of the frame (9), and each lubricating oil tank (651) is connected to an oil supply pipeline (652); each precision cutting frame (61) is provided with a lubrication frame (653) located between the corresponding precision cutting unit (62) and the precision cutting backup unit (63), and the lubrication frame (653) is provided with two lubrication grooves (654) disposed along the length of the frame (9), the two lubrication grooves (654) are arranged vertically and in a U-shaped structure with their openings facing each other, and the opening of the lubrication groove (654) is provided with oil-storing lubricating cotton (655), and the end of the oil supply pipeline (652) away from the lubricating oil tank (651) is connected to the two lubrication grooves (654) on the corresponding side to supply oil to the oil-storing lubricating cotton (655); The two lubrication grooves (654) located on the same side are slidably installed on the corresponding lubrication frame (653) along the length of the frame (9). The two working precision cutting disc shears (625) are located in the corresponding lubrication groove (654) on the side away from each other and are in contact with the oil-storage lubricating cotton (655). When the precision cutting backup unit (63) takes over the work of the precision cutting unit (62), the two lubrication grooves (654) slide along the length of the frame (9) until the two precision cutting backup disc shears (634) enter their interiors and contact the oil-storage lubricating cotton (655), and disengage from the precision cutting disc shears (625).

7. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: The adjustment limiting unit (42) includes adjustment plates (421) arranged at both ends of the feed inlet (411) / discharge outlet (412) along the width direction of the frame (9). The ends of the adjustment plates (421) at both ends of the feed inlet (411) / discharge outlet (412) that are far apart from each other are slidably mounted on the annealing box (41) along their length direction, and the height of the adjustment plate (421) is greater than the opening height of the feed inlet (411) / discharge outlet (412) and can cover the feed inlet (411) / discharge outlet (412); the feed inlet ( The adjusting plates (421) at both ends of the feed inlet (411) and the discharge outlet (412) are rotatably mounted with an adjusting limit roller (422) with a vertical axis. The outer wall of the adjusting limit roller (422) is provided with an adjusting limit groove (4221) coaxial with it. The adjusting plates (421) at both ends of the feed inlet (411) and the discharge outlet (412) are also connected with an elastic heat-insulating curtain (423) located between the two adjusting limit rollers (422). There are two elastic heat-insulating curtains (423) at the top and bottom.

8. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: The centering and correction unit (44) includes centering and correction plates (45) arranged on both sides of the annealing guide roller (43) along the length direction of the frame (9). Each centering and correction plate (45) is provided with a plurality of centering and correction guide grooves (451) corresponding one-to-one with the annealing guide roller (43) along the length direction of its frame (9). The centering and correction guide grooves (451) are arranged vertically. The two ends of the annealing guide roller (43) pass through the corresponding centering and correction guide grooves (451) and are vertically slidably installed in the centering and correction guide grooves (451). The two centering and correction plates (45) are synchronously and oppositely slidably installed in the annealing box (41) along the width direction of the frame (9).

9. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 8, characterized in that: Each of the annealing guide rollers (43) includes a heating roller (431) and a heat-conducting sleeve (432) arranged coaxially. The heating roller (431) is installed inside the heat-conducting sleeve (432). On the side of the two centering and correction plates (45) that are close to each other, there are several vertically arranged uniform air outlets (452) located between adjacent centering and correction guide grooves (451). On the side of the two centering and correction plates (45) that are far from each other, there are uniform air fans (46) that correspond to the uniform air outlets (452) one by one. The uniform air fans (46) are covered with heat insulation protective covers (461).

10. The integrated cold rolling annealing device for online grading and edge trimming of aluminum strip according to claim 1, characterized in that: The cleaning mechanism (3) includes two cleaning rollers (31) arranged on the frame (9) along the width direction of the frame (9). The cleaning rollers (31) are arranged vertically and vertically, and both ends are positioned and rotated on the frame (9) around their axes. Each cleaning roller (31) is fitted with a cleaning wiping sleeve (32) coaxial with it. The discharge side of the two cleaning rollers (31) is also provided with a multi-faceted cleaning wiping plate (33) parallel to it. The two ends of the multi-faceted cleaning wiping plate (33) are intermittently rotated on the frame (9) around its axes. Each side of the multi-faceted cleaning wiping plate (33) can be detachably installed with a cleaning wiping cotton (34) arranged along its length direction. In the cleaning mechanism (3) corresponding to the precision cutting mechanism (6), the discharge side of the multi-faceted cleaning wiping plate (33) away from the corresponding cleaning roller (31) is also provided with a wind plate (35) parallel to it. The two ends of the wind plate (35) are installed on the frame (9), and the openings of the two corresponding wind plates (35) are opposite to each other.

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