Descaling system

Abstract

The invention discloses a descaling system, and relates to the technical field of surface treatment.The descaling system comprises a conveying line, a feeding device, a descaling device and a discharging device, the feeding device, the descaling device and the discharging device are sequentially arranged in the conveying direction of the conveying line, and the conveying line is used for conveying workpieces to be machined, so that the workpieces are conveyed to the descaling device from the feeding device; then the materials are conveyed to the discharging device; the descaling device comprises a plurality of descaling units, the multiple descaling units are sequentially arranged in the conveying direction, and the descaling units conduct descaling on different surfaces of the workpieces respectively. The acid-free descaling device is simple and reasonable in equipment arrangement, capable of conducting continuous batch treatment, high in efficiency and suitable for acid-free descaling of small-size and special-shaped plates.

Description

Technical Field

[0001] The invention relates to the technical field of surface treatment, and in particular to a descaling system. Background Art

[0002] During the hot rolling process, a dense covering layer of metal oxide (commonly known as scale) will form on the surface of the strip. Therefore, it is necessary to remove the iron oxide scale on the surface of the steel plate, that is, descaling.

[0003] EPS (ECO Pickled surface) is a green surface cleaning technology. This technology is a new physical descaling method that sprays a slurry mixed with liquid carrier and abrasive onto the surface of the moving strip to remove the surface oxide scale by hitting the surface of the strip.

[0004] In the prior art, the EPS production line includes an unwinding device, a descaling mechanism and a light brush roller at the exit side. The unwinding device is used to unwind the steel coil into a steel plate; the descaling mechanism is located downstream of the unwinding device and is used to descale the surface oxide skin of the steel plate. This production line is limited to plate and strip materials and adopts continuous unwinding and rewinding. During cleaning, the upper and lower surfaces of the plate and strip are sandblasted at the same time, which is not suitable for cleaning and descaling small-sized and special-shaped plate materials. Summary of the invention The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the present invention provides a descaling system.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a descaling system, comprising a conveyor line and a loading device, a descaling device and a unloading device arranged in sequence along the conveying direction of the conveyor line, the conveyor line is used to convey the workpiece to be processed, so that the workpiece is sent from the loading device to the descaling device in an intermittent or continuous manner, and then sent to the unloading device; the descaling device comprises a plurality of descaling units, and the plurality of the descaling units are arranged in sequence along the conveying direction, and each of the descaling units descales different surfaces of the workpiece respectively.

[0006] The application of the present invention has the following technical effects: each descaling unit only processes one of the surfaces of the workpiece, which is suitable for acid-free descaling of small-sized and special-shaped sheets. Compared with the existing descaling system, the present invention does not need to process the upper and lower surfaces of the workpiece at the same time, and eliminates the pinch rollers at both ends of the strip head and tail, which is suitable for acid-free descaling of small-sized and special-shaped sheets. The whole set of equipment is simple and reasonable in layout, can be processed in batches continuously, and has high efficiency. Optionally, the descaling device also includes a flipping unit, which is arranged between two adjacent descaling units; the workpiece has a first surface and a second surface arranged opposite to each other along the thickness direction, and the first surface or the second surface of the workpiece is used to be arranged on the bearing surface of the conveyor line, and the flipping unit is used to flip the workpiece, and each descaling unit descales the first surface or the second surface of the workpiece respectively.

[0007] Optionally, the flipping unit includes a roller group, and a clamping mechanism and a rotating mechanism arranged on the roller group, the roller group is used to flip under the drive of the rotating mechanism, and the clamping mechanism includes a first linear telescopic device and a second linear telescopic device, the first linear telescopic device and the second linear telescopic device cooperate with each other to clamp the workpiece during the flipping process of the roller group. Optionally, the flipping unit also includes a bracket, and both sides of the roller group are hinged on the bracket through a rotating shaft; the rotating mechanism includes an angle detection sensor and a driving device, and the angle detection sensor and the driving device are both arranged on one side of the bracket, and the output end of the driving device is connected to one end of the rotating shaft. The angle detection sensor is used to detect the flipping angle of the roller group relative to the bracket, and the driving device is used to drive the roller group to flip according to the angle detected by the angle detection sensor.

[0008] Optionally, the descaling unit is provided with a plurality of descaling nozzles arranged in sequence along the extension direction of the conveyor line above the bearing surface of the conveyor line, each descaling nozzle is provided with a sandblasting outlet, the sandblasting outlet is directed toward the downstream of the descaling device, and the spraying direction of the sandblasting outlet intersects with the length direction of the conveyor line.

[0009] Optionally, the conveyor line located in the descaling unit includes a circulating conveyor mesh belt, which extends along the length direction of the conveyor line, and the same circulating conveyor mesh belt includes multiple sub-circulating conveyor mesh belts arranged along the width direction of the conveyor line; multiple gaps are formed on the bearing surface of the circulating conveyor mesh belt, and the gaps are used for the solid-liquid mixture sprayed by the descaling nozzle to pass through.

[0010] Optionally, the loading device includes a loading robot, a loading station is provided on the side of the loading robot, and the loading station is located within the grasping radius of the loading robot. The loading robot is used to grasp the workpiece from the loading station and transfer the workpiece to the conveyor line upstream of the descaling device.

[0011] Optionally, the unloading device includes a unloading robot, a unloading station is provided on the side of the unloading robot, and the unloading station is located within the grasping radius of the unloading robot, and the unloading robot is used to grasp the workpiece from the conveyor line and then transfer the workpiece to the unloading station for stacking.

[0012] Optionally, the descaling system further comprises a cleaning device and a drying device, wherein the cleaning device and the drying device are sequentially arranged downstream of the descaling device along the conveying direction; The cleaning device includes a liquid storage device and a liquid spray rack arranged on both sides of the conveying line along the height direction, the liquid storage device is used to store the cleaning liquid, and the liquid storage device is connected to the liquid spray rack; the liquid spray rack is provided with a plurality of nozzles, and the nozzles are used to flush the oxide scale remaining on the workpiece; the drying device includes an air knife arranged on both sides of the conveying line along the height direction, the air knife has an air blowing port facing the surface of the workpiece, and the air blowing port is used to supply air to the surface of the workpiece to dry the cleaning liquid on the surface of the workpiece.

[0013] Optionally, the descaling system also includes a centering device, which is arranged downstream of the blow-drying device; the centering device includes a position detection sensor, a first positioning member and a second positioning member, the position detection sensor is used to detect the position of the workpiece and send a detection signal characterizing the position of the workpiece to the control device, the position detection sensor, the first positioning member and the second positioning member are all arranged on the conveyor line, the first positioning member and the second positioning member are used to push the workpiece to a preset position according to a control signal sent by the control device, wherein the control device is used to generate the control signal according to the detection signal.

[0014] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. The best embodiments or means of the present invention will be described in detail in conjunction with the drawings, but they are not intended to limit the technical solutions of the present invention. In addition, there are multiple features, elements, and components that appear in each of the following texts and drawings, and different symbols or numbers are marked for convenience, but they all represent components with the same or similar structures or functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the top structure of the present invention.

[0016] Figure 2 It is a side structural schematic diagram of the present invention.

[0017] Figure 3a -c is a schematic diagram of the centering process of the centering element of the present invention.

[0018] Figure 4a -c is a schematic diagram of the flipping process of the flipping unit of the present invention.

[0019] Figure 5 It is a process flow chart of the present invention.

[0020] Among them, 1. feeding device; 2. descaling device; 20. first descaling unit; 201. descaling nozzle; 21. turning unit; 22. second descaling unit; 3. cleaning device; 4. drying device; 5. centering device; 6. unloading device; 7. loading station; 8. unloading station; 9. workpiece; 101. conveyor line section A; 102. conveyor line section B; 103. conveyor line section C; 104. conveyor line section D; 211. first linear telescopic device; 212. first linear telescopic device. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0022] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0023] After hot-rolled steel strip leaves the factory, the steel coil will be cut into steel plates due to actual needs. Due to the hot rolling process of the steel strip, oxides such as FeO, Fe3O4, and Fe2O3 will be attached to the surface of the steel plate substrate. When downstream users use the steel strip for processes such as cold rolling, stamping, and painting, they often need a relatively smooth and clean steel strip surface to improve the performance of their products and meet product requirements. Therefore, it is necessary to remove the oxide scale on the surface of the steel plate. The traditional method of removing oxide scale from plate steel is to use dry shot blasting or pickling process (strong acids such as hydrochloric acid, sulfuric acid, and nitric acid).

[0024] The traditional pickling process, due to the strong acid chemical reaction, will result in the emission and treatment of a large amount of waste acid, waste gas and other pollutants. In addition, the current treatment of waste acid and solid waste is very costly, resulting in high operating costs for regular pickling lines. Local pickling lines do not treat waste acid and solid waste, causing great damage to the environment.

[0025] In traditional dry shot blasting, steel shot or steel grit has a strong impact on the surface of the steel plate, so a hardened layer is produced on the surface of the steel plate, and thin plates cannot be processed because the thin plates will be significantly deformed or damaged after a large impact. At the same time, some oxide scale will remain in the pits after the impact, resulting in poor descaling effect on the surface of the steel plate, and the roughness is very large, which cannot meet the requirements of some customers for a fine surface after descaling. During the shot blasting process, a large amount of dust will also be generated, which will pollute the environment and pose a health threat to the operators. Traditional dry shot blasting and sand blasting machines cause great damage to the equipment itself, so the cost of later maintenance and use is very high.

[0026] Traditional EPS processing lines are limited to plates and strips, and use unwinding / rewinding continuous conveying. During cleaning, both the upper and lower surfaces of the plates and strips are sandblasted and cleaned at the same time. In order to ensure the stability of descaling of the plates and strips, it is necessary to ensure that there are clamping rollers and transmission on both sides of the conveying direction of the descaling area. There are strict requirements on the shortest size of the steel plate, and it is not suitable for descaling of small-sized and special-shaped plates.

[0027] In view of this, an embodiment of the present invention provides a descaling system, referring to the attached Figure 1-2 , comprising a feeding device 1, a descaling device 2, a cleaning device 3, a drying device 4 and a feeding device 6, wherein the feeding device 1, the descaling device 2, the cleaning device 3, the drying device 4 and the feeding device 6 are connected through a conveying line; the conveying line is used to convey the workpiece 9 to be processed, so that a plurality of the workpieces 9 are continuously conveyed from the feeding device 1 to the descaling device 2, and then to the feeding device 6; wherein, The feeding device 1 is used to sequentially convey a plurality of stacked workpieces 9 to the descaling device 2; The descaling device 2 includes a plurality of descaling units, which are sequentially arranged along the conveying direction of the workpiece 9, and each of the descaling units descales different surfaces of the workpiece 9 along the thickness direction; The cleaning device 3 is used to clean the workpiece 9 conveyed from the descaling device 2; The drying device 4 is used to dry the workpiece 9 conveyed from the cleaning device 3; The unloading device 6 is used to stack the workpieces 9 delivered from the drying device 4. Figure 2 The direction indicated by the horizontal arrow; The feeding device 1 is used to convey the workpiece to the descaling device 2, and the descaling device 2 is used to descale the surface of the workpiece; the cleaning device 3 is used to clean the surface of the workpiece, the drying device 4 is used to dry the surface of the workpiece, and the unloading device 6 is used to send the workpiece out of the descaling system; The descaling device 2 includes a plurality of descaling units sequentially arranged along the conveyor line, and the plurality of descaling units are respectively used to dephosphorize the first surface or the second surface of the workpiece. Specifically, the descaling units include a first descaling unit 20 and a second descaling unit 22 sequentially arranged along the conveyor line, and the first surface or the second surface of the workpiece is used to be arranged on the bearing surface of the conveyor line; the descaling device 2 also includes a flipping unit 21, and the flipping unit 21 is arranged between the first descaling unit 20 and the second descaling unit 22, the first descaling unit 20 is used to descale the first surface of the workpiece, the flipping device 21 is used to flip the workpiece, and the second descaling unit 22 is used to descale the second surface of the workpiece.

[0028] Through the flipping unit, each descaling unit only needs to process the oxide scale on the upper surface of the workpiece, so only the turbine and descaling nozzle on the top of the descaling unit need to be considered, and the equipment structure is simpler; the descaling effect on the lower surface of the workpiece will not be poor due to the obstruction of the conveyor belt of the existing descaling equipment; since the workpiece is placed on the conveyor belt, the moving speed of the workpiece is consistent with the conveyor belt, and the speed is more uniform than the traditional form of relying on conveyor rollers; shorter workpieces can be processed by this solution, while traditional descaling equipment uses conveyor rollers for transportation, which needs to avoid the spray descaling area, and ensure that there are clamping rollers on both sides of the workpiece for clamping and transmission, and there are strict requirements on the shortest size of the workpiece.

[0029] The descaling unit is provided with a plurality of descaling nozzles arranged in sequence along the extension direction of the conveying line above the bearing surface of the conveying line, and each descaling nozzle 201 is provided with a sandblasting outlet, the sandblasting outlet is directed toward the downstream of the descaling device 2, and the spraying direction of the sandblasting outlet intersects with the extension direction of the conveying line. Figure 2 The direction is indicated by the oblique arrow below the descaling nozzle 201. The multiple descaling nozzles are not collinear, and the descaling nozzles form a spraying area on the bearing surface of the conveyor line, and the spraying areas formed by two adjacent descaling nozzles at least partially overlap; in other optional embodiments, the multiple descaling nozzles are collinearly arranged.

[0030] In this embodiment, the conveyor line includes multiple sections of conveyor rollers (conveyor line section A 101, conveyor line section B 102, conveyor line section C 103, conveyor line section D 104), and a circulating conveyor mesh belt arranged in the descaling unit. The conveyor mesh belt is a consumable part, and the surface of the entire circumference is almost evenly impacted during the entire working process. The service life is significantly longer than that of traditional conveyor rollers, belt threading rods and other non-moving parts by many times or even more than 10 times. In other embodiments, the conveyor mesh belt can be divided into multiple strips in the width direction, and can be replaced separately according to the different degrees of wear of each small conveyor belt, thereby avoiding the cost of overall replacement and the difficulty and workload of replacement.

[0031] In this embodiment, the flipping unit 21 includes a roller group, and a clamping mechanism and a rotating mechanism arranged on the roller group. The roller group is used to flip under the drive of the rotating mechanism. The clamping mechanism includes a first linear telescopic device 211 and a second linear telescopic device 212. The first linear telescopic device 211 and the second linear telescopic device 212 cooperate with each other to clamp the workpiece 9 during the flipping process of the roller group.

[0032] The flipping unit 21 also includes a bracket, and both sides of the roller group are hinged on the bracket through a rotating shaft; the rotating mechanism includes an angle detection sensor and a driving device, and the angle detection sensor and the driving device are both arranged on one side of the bracket, and the output end of the driving device is connected to one end of the rotating shaft. The angle detection sensor is used to detect the flipping angle of the roller group relative to the bracket, and the driving device is used to drive the roller group to flip according to the angle detected by the angle detection sensor.

[0033] In some other optional embodiments, the flip unit further includes a centering mechanism disposed on the roller group, the centering mechanism is used to push the workpiece 9 to the preset position when the workpiece 9 deviates from the preset position, wherein the center of the workpiece 9 in the width direction at the preset position coincides with the center of the conveyor line in the width direction. The centering mechanism includes a position detection sensor and a plurality of third linear telescopic devices, the position detection sensor is used to detect the position of the workpiece and send a detection signal representing the position of the workpiece to the control device, the position detection sensor and the third linear telescopic device are both disposed on the roller group, the third linear telescopic device (not shown in the figure) is used to push the workpiece 9 to the preset position according to the control signal sent by the control device, wherein the control device is used to generate the control signal according to the detection signal. Specifically, the third linear telescopic device is a pair of servo electric cylinders or hydraulic cylinders, taking the hydraulic cylinder as an example, the cylinder body of the hydraulic cylinder is connected to one side of the width direction of the roller group, the piston rod of the hydraulic cylinder is connected to the push rod, and the end of the push rod is used to push the workpiece 9.

[0034] Refer to the attached Figure 3a -c, the flipping process of the flipping unit is as follows: Figure 3a As shown, the roller group has an A port and a B port. At this time, the A port is located on the left side of the flip unit, and the B port is located on the right side of the flip unit. The first surface of the workpiece 9 faces upward, and the workpiece 9 enters the channel of the roller group from the A port. The centering component, that is, the third linear telescopic device, centers the workpiece 9. Figure 3bAs shown, after the workpiece 9 is centered, the roller group flips clockwise, and the A port of the roller group flips to the top and the B port flips to the bottom. During this process, the clamping assembly, that is, a pair of hydraulic cylinders in the third linear telescopic device, clamps the workpiece 9; Figure 3c As shown, the roller group is flipped 180 degrees, at which time, port B is located on the left side of the roller group and port A is located on the right side of the roller group; the second surface of the workpiece 9 faces upward, and the workpiece 9 leaves the roller group from port A and enters the lower second descaling unit for cleaning.

[0035] In this embodiment, a centering device 5 is further provided downstream of the drying device 4, and the centering device 5 includes a position detection sensor, a first positioning member, and a second positioning member. The position detection sensor is used to detect the position of the workpiece and send a detection signal representing the position of the workpiece to the control device. The position detection sensor, the first positioning member, and the second positioning member are all provided on the conveyor line. The first positioning member and the second positioning member are used to push the workpiece 9 to a preset position according to a control signal sent by the control device, wherein the control device is used to generate the control signal according to the detection signal, and the preset position is the center position of the width direction of the conveyor line. The first positioning member and the second positioning member are servo electric cylinders or hydraulic cylinders.

[0036] Refer to the attached Figure 4a -c, the centering process of the centering device is as follows: Figure 4a As shown, the workpiece 9 is located on the conveyor line and has just entered the centering device, and the first positioning member and the second positioning member are in a retracted state; Figure 4b As shown, the workpiece 9 enters the detection range of the position detection sensor along the conveyor line, and the first positioning member and the second positioning member are used to push the workpiece 9 to a preset position according to the control signal sent by the control device; Figure 4c As shown, after the workpiece 9 is pushed to the preset position, it continues to be transported backward along the conveying line.

[0037] The present embodiment does not specifically limit the cleaning device, and a conventional cleaning device well known to those skilled in the art may be used. The cleaning device 3 is arranged downstream of the descaling device 2, and the cleaning device 3 includes water spray outlets arranged on both sides of the conveying line in the height direction, and the water spray outlets are connected to a device containing cleaning liquid through a water pump, and the water spray outlets are used to wash away impurities remaining on the first surface and the second surface of the workpiece 9.

[0038] The present embodiment has no special limitation on the drying device, and it can be a conventional drying device well known to those skilled in the art, such as a drying machine, a high-speed air knife, etc. The drying device 4 is arranged downstream of the cleaning device 3, and the drying device 4 includes air outlets arranged on both sides of the conveying line in the height direction, and the air outlets are used to dry the cleaning liquid remaining on the first surface and the second surface of the workpiece 9.

[0039] In this embodiment, the feeding device 1 includes a feeding robot, a feeding station 7 is provided on the side of the feeding robot, and the feeding station 7 is located within the grasping radius of the feeding robot 1, and the feeding robot 1 is used to grasp the workpiece 9 from the feeding station 7 and then transfer the workpiece to the conveyor line upstream of the descaling device 2; The unloading device 6 includes a unloading robot, a unloading station 8 is provided on the side of the unloading robot, and the unloading station 8 is located within the grasping radius of the unloading robot. The unloading robot is used to grasp the workpiece 9 from the conveyor line downstream of the centering device 5 and then transfer the workpiece to the unloading station 8 for stacking.

[0040] An embodiment of the present invention further provides a descaling process of a descaling system. The process is based on a descaling system provided in the above embodiment, and the process includes the following steps: S1, unstacking and loading, the loading robot grabs the workpiece from the loading station and transfers it to the conveyor line section A 101, and the roller conveyor of the conveyor line section A 101 transports the workpiece to the first descaling unit, at which time the upper surface of the workpiece is the first surface; S2, descaling the upper surface, the first descaling unit descales the first surface of the workpiece, and transports the descaled workpiece to the turning unit; S3, turning over the workpiece, the turning unit turns the second surface of the workpiece upward, at which time the upper surface of the workpiece is the second surface, and after the turning is completed, the workpiece is transported to the second descaling unit; S4, descaling the upper surface, the second descaling unit descales the second surface of the workpiece, and transports the descaled workpiece to a cleaning device; S5, cleaning the upper and lower surfaces, the cleaning device rinses the upper and lower surfaces of the workpiece with water to clean the impurities remaining on the upper and lower surfaces of the workpiece, and transports the cleaned workpiece to the drying device; S6, drying the upper and lower surfaces. The drying device dries the upper and lower surfaces of the workpiece to dry the residual water on the workpiece, and transports the dried workpiece to the centering device; S7, aligning the workpiece. The centering device adjusts the workpiece on the conveyor line to the center position along the width direction of the conveyor line. After the adjustment, the workpiece is conveyed to the D section of the conveyor line. S8, unloading and stacking. The unloading robot grabs the workpiece from the conveyor line section D 104 and transfers it to the unloading station for stacking.

[0041] It should be noted that when the entire descaling system is running, the three processes of loading by the loading robot, centering and flipping of the workpiece, and unloading by the unloading robot are carried out simultaneously to ensure that the number of workpieces on the conveyor line of the descaling system is constant; The conveyor line connected between the loading device 1 and the first descaling unit 20 is called conveyor line section A 101, the conveyor line between the first descaling unit 20 and the flip unit 21 is called conveyor line section B 102, the conveyor line between the flip unit 21 and the second descaling unit 22 is called conveyor line section C 103, and the conveyor line downstream of the centering device 5 is called conveyor line section D 104.

[0042] In the process of synchronous positioning of workpieces, there are several key control nodes: first, the robot loads the material to section A of the conveyor line; second, the workpiece on section B of the conveyor line enters the flip unit; third, the workpiece in the flip unit enters section C of the conveyor line; fourth, the unloading robot unloads the workpiece on section D of the conveyor line.

[0043] Except for the conveyor line section D, the other conveyor rollers, circulating conveyor belts and equipment of the descaling system convey the workpiece synchronously at a constant speed; During the operation of the descaling system, the turbine of the descaling unit (i.e., descaling) is always on. The present invention can process in batches continuously with high efficiency.

[0044] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A descaling system, characterized in that: The invention comprises a conveyor line and a loading device (1), a descaling device (2) and a unloading device (6) which are arranged in sequence along the conveying direction of the conveyor line. The conveyor line is used to transport a workpiece (9) to be processed, so that the workpiece (9) is sent from the loading device (1) to the descaling device (2) and then to the unloading device (6). The descaling device (2) comprises a plurality of descaling units, which are arranged in sequence along the conveying direction, and each of the descaling units descales a different surface of the workpiece (9).

2. The descaling system according to claim 1, characterized in that: The descaling device (2) further comprises a turning unit (21), wherein the turning unit (21) is arranged between two adjacent descaling units; the workpiece (9) comprises a first surface and a second surface arranged opposite to each other in a thickness direction, the first surface or the second surface of the workpiece (9) is used to be arranged on a bearing surface of the conveyor line, the turning unit is used to turn over the workpiece (9), and each descaling unit descales the first surface or the second surface of the workpiece (9) respectively.

3. The descaling system according to claim 2, characterized in that: The flipping unit (21) comprises a roller group, and a clamping mechanism and a rotating mechanism arranged on the roller group, the roller group is used to flip under the drive of the rotating mechanism, and the clamping mechanism comprises a first linear telescopic device and a second linear telescopic device, the first linear telescopic device and the second linear telescopic device cooperate with each other to clamp the workpiece (9) during the flipping process of the roller group.

4. The descaling system according to claim 3, characterized in that: The flipping unit (21) also includes a bracket, and the two sides of the roller group are hinged on the bracket through a rotating shaft; the rotating mechanism includes an angle detection sensor and a driving device, and the angle detection sensor and the driving device are both arranged on one side of the bracket, and the output end of the driving device is connected to one end of the rotating shaft. The angle detection sensor is used to detect the flipping angle of the roller group relative to the bracket, and the driving device is used to drive the roller group to flip according to the angle detected by the angle detection sensor.

5. The descaling system according to claim 2, characterized in that: The descaling unit is provided with a plurality of descaling nozzles (201) arranged in sequence along the extending direction of the conveying line above the bearing surface of the conveying line, and each descaling nozzle (201) is provided with a sandblasting outlet, the sandblasting outlet is directed toward the downstream of the descaling device (2), and the spraying direction of the sandblasting outlet intersects with the length direction of the conveying line.

6. The descaling system according to claim 5, characterized in that The conveyor line located in the descaling unit comprises a circulating conveyor mesh belt, the circulating conveyor mesh belt extends along the length direction of the conveyor line, and the same circulating conveyor mesh belt comprises a plurality of sub-circulating conveyor mesh belts arranged along the width direction of the conveyor line; a plurality of gaps are formed on the bearing surface of the circulating conveyor mesh belt, and the gaps are used for the solid-liquid mixture sprayed by the descaling nozzle (201) to pass through.

7. The descaling system according to claim 1, characterized in that The loading device comprises a loading robot, a loading station (7) is provided on the side of the loading robot, and the loading station (7) is located within the grasping radius of the loading robot, and the loading robot is used to grasp the workpiece (9) from the loading station (7) and then transfer the workpiece to the conveyor line upstream of the descaling device (2).

8. The descaling system according to claim 1, characterized in that The unloading device (6) comprises a unloading robot, a unloading station (8) is provided on the side of the unloading robot, and the unloading station (8) is located within the grasping radius of the unloading robot, and the unloading robot is used to grasp the workpiece (9) from the conveyor line and then transfer the workpiece (9) to the unloading station (8) for stacking.

9. The descaling system according to any one of claims 1 to 8, characterized in that: The descaling system further comprises a cleaning device (3) and a drying device (4), wherein the cleaning device (3) and the drying device (4) are sequentially arranged downstream of the descaling device (2) along the conveying direction; The cleaning device (3) comprises a liquid storage device and a liquid spray rack arranged on both sides of the conveyor line in the height direction, the liquid storage device is used to store cleaning liquid, and the liquid storage device is connected to the liquid spray rack; the liquid spray rack is provided with a plurality of nozzles, and the nozzles are used to flush the oxide scale remaining on the workpiece (9); the drying device (4) comprises an air knife arranged on both sides of the conveyor line in the height direction, the air knife has an air blowing port facing the surface of the workpiece (9), and the air blowing port is used to supply air to the surface of the workpiece (9) to dry the cleaning liquid on the surface of the workpiece (9).

10. The descaling system according to claim 9, characterized in that The descaling system further comprises a centering device (5), wherein the centering device (5) is arranged downstream of the drying device (4); the centering device (5) comprises a position detection sensor, a first positioning member, and a second positioning member, wherein the position detection sensor is used to detect the position of the workpiece and send a detection signal representing the position of the workpiece to a control device, wherein the position detection sensor, the first positioning member, and the second positioning member are all arranged on the conveyor line, wherein the first positioning member and the second positioning member are used to push the workpiece (9) to a preset position according to a control signal sent by the control device, wherein the control device is used to generate the control signal according to the detection signal.

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