Cold-formed thin-walled steel keel forming system

Abstract

The invention relates to a cold-formed thin-walled steel keel forming system applied to the technical field of profile forming, which comprises an unreeling machine, a leveler, a punch press, a rolling forming machine and a shearing machine which are distributed in sequence, galvanized strip steel is unreeled through the unreeling machine, the unreeled steel strip enters the leveler to be preliminarily leveled, then enters the punch press to be subjected to a punching and stretching process, and finally enters the rolling forming machine to be subjected to rolling forming. The punching type can be a triangular hole or an elliptical hole, in the prior art, a punched steel belt can directly enter a rolling forming machine to be subjected to a rolling forming procedure, U-shaped section steel is finally formed through rolling and forming of 35 roll shafts, and needed full-automatic shearing, stacking and packaging are sequentially carried out according to different customized sizes, so that the production efficiency is improved, and the production cost is reduced. The surface treatment machine and the detection machine are arranged between the punching machine and the rolling forming machine, so that the punched steel belt firstly enters the surface treatment machine to be subjected to the burr removal procedure after punching, then is subjected to visual inspection of the detection machine and then enters the rolling forming machine to be subjected to rolling forming.

Description

Technical Field

[0001] The invention relates to a light steel keel forming system, in particular to a cold-bent thin-walled steel keel forming system applied in the technical field of profile forming. Background Art

[0002] The existing cold bending and roll forming production line includes: an unwinding machine, a leveling machine, a punching machine, a roll forming machine, and a shearing machine. The steel strip is unwound on the unwinding machine, the unwound steel strip enters the leveling machine for leveling, and then the steel strip enters the punching machine for punching. The punched steel strip enters the roll forming machine for cold bending and rolling into a profile. During cold bending and rolling, both sides of the steel strip will be bent upward and inward, and then the profile enters the shearing machine to be cut into sections, thereby obtaining sections of profiles.

[0003] The above-mentioned cold bending and rolling forming production line has the following disadvantages: the burr surface of the steel strip after punching is located on the lower surface of the steel strip, so that the burr surface will be located on the bottom surface of the outer side of the profile after the steel strip is cold bent and rolled into a profile, which will affect the surface quality of the profile. In addition, creases will appear on the lower surface of the steel strip after cold bending and rolling, and the creases will be located on the outer side of the profile after the steel strip is formed, which will also affect the surface quality of the profile.

[0004] To solve the above problems, Chinese patent CN202011276459.6 discloses a cold bending and roll forming production line, in which a flipping device and a film sticking device are provided between the punching machine and the roll forming machine. The steel strip after punching can be flipped on the flipping device so that the burr surface can face upward, so that the burr surface will not be located on the outer surface of the formed profile, thereby improving the surface quality of the profile; in addition, the production line can stick a protective film on the lower surface of the steel strip before cold bending and rolling, thereby preventing creases from occurring on the lower surface of the steel strip during cold bending and rolling, thereby further improving the surface quality of the profile.

[0005] Although the above technology adopts the method of flipping the steel strip so that the burr surface faces upward, so that the burr surface will not be located on the outer surface of the formed profile, the burrs still exist on the profile, and the profile after cold bending is difficult to grind and remove the burrs due to its irregular shape, so that the burrs exist on the profile for a long time, affecting the surface quality, subsequent processing and use of the profile. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing method of flipping the steel strip in the cold bending roll forming system to make the burr side face upwards, although the burr surface will not be completely exposed on the outer surface of the profile, the burr still exists on the surface of the entire profile. In addition, the profile obtained by cold bending is not a closed structure. Therefore, the burr is likely to affect the surface quality, subsequent processing and use of the profile.

[0007] In order to solve the above problems, the present invention provides a cold-bent thin-walled steel keel forming system, comprising an unwinding machine, a leveling machine, a punching machine, a roll forming machine and a shearing machine which are sequentially distributed, a surface treatment machine and a detection machine are arranged between the punching machine and the roll forming machine, and the surface treatment machine is located on a side close to the punching machine; The surface treatment machine includes a liquid tank and a driving box with an electric motor installed inside. The output end of the electric motor movably penetrates the outside of the driving box and is fixedly connected to a disc. The outer end of the disc is fixedly connected to a main gear. The outer end of the liquid tank is fixedly connected to a water pump. The water inlet and outlet of the water pump are fixedly extended to the inside of the liquid tank. A turntable is provided on the upper side of the liquid tank. The outer end of the turntable is fixedly connected to a sub-gear meshing with the main gear. The upper end of the turntable is fixedly connected with a central disk, an outer ring and a plurality of grinding rings of different sizes, the plurality of grinding rings are arranged in a sleeve shape from the inside to the outside, the central disk is fixedly connected to the inner end of the innermost grinding ring, the outer ring is fixedly connected to the outer end of the outermost grinding ring, and the upper end of the turntable is provided with a plurality of liquid collecting grooves which are also arranged in an inner and outer sleeve shape, and the plurality of liquid collecting grooves are respectively located between a pair of inner and outer adjacent grinding rings; A liquid ring is provided inside the liquid collecting trough, and a plurality of uniformly distributed nozzles are fixedly connected to the upper end of the liquid ring, a coaxially arranged inner tube and outer tube are fixedly connected to the central part of the turntable, the outer tube is fixedly connected to the outer end of the inner tube and the inner end of the liquid tank, the lower end of the outer tube movably penetrates the upper end of the liquid tank and extends to the inner side thereof, a plurality of circularly uniformly distributed liquid inlet branch pipes are fixedly connected to the side end of the inner tube, the plurality of liquid inlet branch pipes all penetrate the inside of the disc and the turntable and are respectively fixedly connected to a pair of liquid rings, a plurality of liquid outlet branch pipes are fixedly connected to the side end of the outer tube, the plurality of liquid outlet branch pipes all penetrate the inside of the turntable and are respectively connected to a pair of liquid collecting troughs, a water outlet end of the water pump is fixedly connected to a water pipe, and the end of the water pipe is connected to the inside of the inner tube.

[0008] As a further supplement to the present application, the end of the water pipe away from the water pump is in a vertical upward state, and it extends into the interior of the inner pipe and is rotatably connected thereto.

[0009] As a further supplement to the present application, the outer tube adopts a "earth"-shaped structure, and a reflux channel for the flushing liquid to flow downward is provided between its inner wall and the outer wall of the inner tube.

[0010] As a further supplement to the present application, a partition is slidably connected inside the liquid tank, the outer tube is located on the side of the partition away from the water pump, and in the initial state, the flushing liquid is stored on the side of the partition close to the water pump.

[0011] As another improvement of the present application, the detection machine includes a frame, a camera is fixedly connected to the upper end of the frame, a cotton column is provided on one side of the camera, and the lower end of the cotton column is fixedly connected to the upper end of the frame through a pair of pillars.

[0012] As another improvement supplement to the present application, an inner shaft is provided on the side of the camera away from the cotton column, a film sticking tube is wrapped around the outer end of the inner shaft, a pair of cylinders are fixedly installed inside the frame, the telescopic ends of the cylinders are movably extended to the upper side of the frame, and an elastic telescopic rod is provided between the cylinders and the lower end of the inner shaft.

[0013] As another improved supplement of the present application, the elastic telescopic rod includes a telescopic rod and a compression spring, the telescopic rod is fixedly connected between the cylinder and the inner shaft, and the compression spring is sleeved on the outside of the telescopic rod.

[0014] As another improved supplement of the present application, the film cylinder includes a cylinder movably mounted on the outside of the inner shaft and a film roll, the film roll includes a plurality of short films, and the plurality of short films are wound around the outer end of the cylinder in a stacked manner, and there is a gap between the head and tail ends of an adjacent pair of short films, the inner circle surface of the wound short film is fixedly connected to a release film, and the outer circle surface is coated with an adhesive layer.

[0015] As another improvement supplement of the present application, a smoothing rod is provided at the end of the inner shaft away from the camera, the lower end of the smoothing rod is fixedly connected to the upper end of the frame through a pair of support rods, and the upper ends of the smoothing rod and the cotton column are located at the same horizontal height.

[0016] As another improved supplement of the present application, a controller is fixedly connected to the side end of the frame, and the camera and the cylinder are electrically connected to the controller.

[0017] To summarize, the present application arranges a surface treatment machine and a detection machine between the punching machine and the roll forming machine, so that the steel strip after punching first reaches the surface treatment machine for the burr removal process after punching, effectively cleans the burrs at the punching part of the steel strip, and effectively improves the surface quality of the final steel section. The cleaned steel strip is then visually inspected by the detection machine. When residual burrs are found, the local film pasting process is started, and a single short film is attached to the burr and the surrounding area, covering the outer end of the burr. In the subsequent rolling process, without affecting the roll forming process, it plays an effective isolation role between the roller shaft and the residual burrs, so that the residual burrs are not easy to be contaminated on the roller surface, and are not easy to cause indentations on the subsequent steel strip surface, thereby further improving the surface quality of the steel section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a system composition diagram of the first and second implementation modes of this application; Figure 2 A three-dimensional diagram of a surface treatment machine in the first and second embodiments of the present application; Figure 3 The partial three-dimensional surface treatment machine in the first and second embodiments of the present application Figure 1 ; Figure 4 The partial three-dimensional surface treatment machine in the first and second embodiments of the present application Figure 2 ; Figure 5 It is a side structural schematic diagram of the surface treatment machine in the first and second embodiments of the present application; Figure 6 The partial three-dimensional surface treatment machine in the first and second embodiments of the present application Figure 3 ; Figure 7 The side structure diagram of the surface treatment machine in the first and second embodiments of the present application when in use Figure 1 ; Figure 8 The side structure diagram of the surface treatment machine in the first and second embodiments of the present application when in use Figure 2 ; Fig. 9 The side structure diagram of the surface treatment machine in the first and second embodiments of the present application when in use Figure 3 ; Fig.10 A three-dimensional diagram of the detection machine in the first and second embodiments of the present application; Fig.11 It is a side structural schematic diagram of the detection machine in the first and second embodiments of the present application; Fig.12 The side structure diagram of the detector in use in the first and second embodiments of the present application is shown in FIG. Figure 1 ; Fig.13 This is a schematic diagram of the side structure of the film sticking tube in the first and second embodiments of the present application; Fig.14 The side structure diagram of the detector in use in the first and second embodiments of the present application is shown in FIG. Figure 2 ; Fig.15 This is a cross-sectional view of the steel strip before and after forming in the first and second embodiments of the present application.

[0019] Description of the numbers in the figure: 1 unwinder, 2 leveler, 3 punch, 4 roll forming machine, 5 shear, 6 surface treatment machine, 7 testing machine, 71 frame, 72 cotton column, 73 camera, 74 inner shaft, 75 film sticking cylinder, 76 cylinder, 77 telescopic rod, 78 compression spring, 79 smoothing rod, 8 drive box, 9 disc, 10 main gear, 11 liquid tank, 12 water pump, 1201 water pipe, 13 sub-gear, 14 turntable, 1401 liquid collection tank, 15 center disc, 16 grinding ring, 17 outer ring, 18 inner tube, 19 outer tube, 1901 reflux channel, 20 liquid ring, 21 liquid inlet branch pipe, 22 liquid outlet branch pipe, 23 partition. DETAILED DESCRIPTION

[0020] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0021] The first implementation method: The present invention provides a cold-bent thin-walled steel keel forming system, please refer to Figure 1 , including an unwinding machine 1, a leveling machine 2, a punching machine 3, a roll forming machine 4 and a shearing machine 5 which are sequentially arranged. A surface treatment machine 6 and a detection machine 7 are arranged between the punching machine 3 and the roll forming machine 4. The surface treatment machine 6 is located on the side close to the punching machine 3. When in use, the galvanized steel strip is placed on the unwinding machine 1 for unwinding. The unwinding steel strip enters the leveling machine for preliminary leveling, and then enters the punching machine 3 for punching and stretching process. The punching type can be a triangular hole or an elliptical hole. In the prior art, the punched steel strip can directly enter the roll forming machine 4 for the roll forming process. After 35 roller rolling and forming, a U-shaped steel (such as Fig.15 As shown), according to the different customized sizes, the required fully automated shearing, stacking and packaging are carried out. In the present application, a surface treatment machine 6 and a detection machine 7 are arranged between the punching machine 3 and the roll forming machine 4, so that the punched steel strip first enters the surface treatment machine 6 for the burr removal process after punching, and then passes through the visual inspection of the detection machine 7, and then enters the existing roll forming machine 4 for roll forming.

[0022] See also Figure 2 The surface treatment machine 6 includes a liquid tank 11 and a drive box 8 with a motor installed inside. The output end of the motor moves through the outside of the drive box 8 and is fixedly connected to a disc 9. The outer end of the disc 9 is fixedly connected to a main gear 10. Figure 4 As shown, a water pump 12 is fixedly connected to the outer end of the liquid tank 11, and the water inlet and outlet ends of the water pump 12 are fixedly extended into the liquid tank 11. A turntable 14 is provided on the upper side of the liquid tank 11, and a sub-gear 13 meshing with the main gear 10 is fixedly connected to the outer end of the turntable 14.

[0023] See also Figure 3-5 , the upper end of the turntable 14 is fixedly connected with a center disk 15, an outer ring 17 and a plurality of grinding rings 16 of different sizes, and the plurality of grinding rings 16 are arranged in a sleeve shape from the inside to the outside, and the outer diameter of the inner grinding ring 16 is smaller than the inner diameter of the adjacent outer grinding ring 16, so that there is an obvious gap between the adjacent grinding rings 16, which is convenient for the recovery and cleaning of burrs on the steel belt, the center disk 15 is fixedly connected to the inner end of the innermost grinding ring 16, and the outer ring 17 is fixedly connected to the outer end of the outermost grinding ring 16. The upper end of the turntable 14 is provided with a plurality of liquid collection grooves 1401 which are also arranged in an inner and outer sleeve shape, and the plurality of liquid collection grooves 1401 are respectively located between a pair of adjacent inner and outer grinding rings 16 (supplementary explanation: the position and size of the grinding ring 16 can be set according to the position of the punching hole on the steel belt, and the outer ring diameter of the outermost grinding ring 16 is smaller than the width of the steel belt. In this embodiment, Figure 2It can be seen that the punching holes are close to both sides of the steel strip, and there are no punching holes in the center. Therefore, a center plate 15 without a grinding function is correspondingly provided at the center line of the grinding ring 16).

[0024] See also Figure 5 and Figure 6 A liquid ring 20 is provided inside the liquid collecting tank 1401, and a plurality of uniformly distributed nozzles are fixedly connected to the upper end of the liquid ring 20, and the nozzles are directed upward to facilitate the cleaning of burrs on the steel belt during the grinding process above. The central part of the turntable 14 is fixedly connected to a coaxially arranged inner tube 18 and an outer tube 19, and the outer tube 19 is fixedly connected to the outer end of the inner tube 18 and the inner end of the liquid tank 11, and the lower end of the outer tube 19 movably penetrates the upper end of the liquid tank 11 and extends to the inner side thereof, and the side end of the inner tube 18 is fixedly connected to a plurality of circular uniformly distributed liquid inlet branches 21, and the plurality of liquid inlet branches 21 all penetrate the inside of the disc 9 and the turntable 14 and are fixedly connected to a pair of liquid rings 20, such as Figure 7 As shown, since the multiple liquid rings 20 are also arranged in an inner and outer arrangement, part of the liquid inlet branch pipes 21 will pass through the inner liquid ring 20 until it is connected to the outer liquid ring 20, and the flushing liquid in the inner tube 18 is transported to the multiple liquid rings 20 through the liquid inlet branch pipes 21. Figure 8 As shown, the side end of the outer tube 19 is fixedly connected with a plurality of liquid outlet branches 22, and the plurality of liquid outlet branches 22 all pass through the interior of the turntable 14 and are respectively connected with a pair of liquid collecting grooves 1401. Similarly, some of the liquid outlet branches 22 will pass through the inner liquid collecting groove 1401 until they are connected with the outer liquid collecting groove 1401. The outer tube 19 adopts a "earth"-shaped structure, and a reflux channel 1901 for the flushing liquid to flow downward is provided between its inner wall and the outer wall of the inner tube 18. The flushing liquid with burrs in the liquid collecting groove 1401 is introduced into the reflux channel 1901 through the liquid outlet branch pipe 22, and then flows into the liquid tank 11 for recovery.

[0025] The "earth"-shaped structure of the outer tube 19 is connected between the turntable 14 and the liquid tank 11, which plays a role in stabilizing the support of the turntable 14 and has a rotation function, so that the turntable 14 can rotate smoothly under the coordinated transmission of the main gear 10 and the sub-gear 13, and drives the grinding ring 16 to grind the punching parts on the lower surface of the steel belt. The water outlet end of the water pump 12 is fixedly connected with a water pipe 1201, and the end of the water pipe 1201 is connected to the inside of the inner tube 18. The end of the water pipe 1201 away from the water pump 12 is in a vertical upward state, and it extends to the inside of the inner tube 18 and is rotatably connected thereto. Through the rotation coordination of the water pipe 1201 and the inner tube 18, the flushing liquid is transported to the inside of the inner tube 18 without affecting the rotation of the turntable 14, and then enters the liquid inlet branch pipe 21 and the liquid ring 20 to flush the polished steel belt.

[0026] See also Figure 7 and Figure 8The interior of the liquid tank 11 is slidably connected with a partition 23, and the outer tube 19 is located on the side of the partition 23 away from the water pump 12. In the initial state, the flushing liquid is stored on the side of the partition 23 close to the water pump 12. The partition 23 divides the interior of the liquid tank 11 into two areas. The side close to the water pump 12 stores unused flushing liquid, and the side close to the outer tube 19 stores recovered flushing liquid, so that the flushing liquid input into the inner tube 18 is not easy to contain burrs and debris, effectively ensuring cleanliness. In the initial state, since more unused flushing liquid is stored and the other side does not store recovered flushing liquid, the partition 23 is in close contact with the outer tube 19. During use, as the use of flushing liquid decreases and the recovered flushing liquid increases, under the change of water pressure on both sides, the partition 23 can gradually move toward the water pump 12 to provide more space for the recovered flushing liquid.

[0027] See also Fig.10 and Fig.11 The inspection machine 7 includes a frame 71, a camera 73 is fixedly connected to the upper end of the frame 71, a cotton column 72 is provided on one side of the camera 73, and the lower end of the cotton column 72 is fixedly connected to the upper end of the frame 71 through a pair of pillars. The cotton column 72 is used to wipe the steel strip after grinding and washing to effectively remove residual burrs. Then, the camera 73 is used to visually inspect the lower surface of the steel strip, and the burr removal result of the steel strip can be obtained through image recognition (this is the prior art).

[0028] The working principle of the surface treatment machine 6 in this application: please refer to Figure 7 and Figure 8 , the steel strip after being punched by the punching machine 3 first reaches the upper end of the grinding ring 16, and at this time the motor in the driving box 8 is started, and the main gear 10 and the sub-gear 13 are driven to drive the turntable 14 to rotate, so that the multiple grinding rings 16 grind the burrs on the punching parts of the lower surface of the steel strip. At the same time, the water pump 12 is started to input the flushing liquid in the liquid tank 11 into the inner tube 18, and then it is sprayed toward the lower surface of the steel strip being grinded through the liquid inlet branch pipe 21 and the liquid ring 20. After taking away the burrs on the steel strip, the flushing liquid falls into the liquid collection tank 1401 again, and flows to the reflux channel 1901 through the liquid outlet branch pipe 22, and finally flows to the liquid tank 11 for storage; In the above process, since the grinding ring 16 and the liquid collecting groove 1401 are distributed at intervals inside and outside, when the steel strip moves from the punching machine 3 to the roll forming machine 4, it will be intermittently polished by multiple grinding rings 16 and flushed by multiple flushing liquids, and the two are performed in turn, thereby achieving sufficient and effective grinding and cleaning of the punching parts of the steel strip, effectively removing burrs at the punching parts, improving the surface quality of the formed steel, and also reducing the situation where burrs are contaminated on the surface of the roller, which is not easy to cause continuous impact on the subsequent steel strip.

[0029] In addition, combined Fig. 9As shown, since the steel strip is transferred through the punching machine 3 and the roll forming machine 4 on both sides, during the process of grinding the steel strip through the surface treatment machine 6, if it is necessary to further improve the stability of the steel strip, an external device can be used to press the upper end of the steel strip located on the upper side of the surface treatment machine 6 (such as using a small lifting device to drive a flat plate to press the upper end of the steel strip), so that the lower end of the steel strip can be fully fitted with the surface treatment machine 6, thereby improving the grinding effect.

[0030] Second implementation method: This embodiment adds the following structure based on the embodiment 1: Fig.10 and Fig.11 , the camera 73 is provided with an inner shaft 74 on the side away from the cotton column 72, and the outer end of the inner shaft 74 is wound with a film sticking tube 75, a pair of cylinders 76 are fixedly installed inside the frame 71, and the side end of the frame 71 is fixedly connected to a controller, the camera 73 and the cylinder 76 are both electrically connected to the controller, the telescopic end of the cylinder 76 is movably extended to the upper side of the frame 71, and an elastic telescopic rod is provided between it and the lower end of the inner shaft 74, the elastic telescopic rod includes a telescopic rod 77 and a compression spring 78, the telescopic rod 77 is fixedly connected between the cylinder 76 and the inner shaft 74, and the compression spring 78 is sleeved on the outer side of the telescopic rod 77, please refer to Fig.13 The film sticking cylinder 75 includes a cylinder movably sleeved on the outer side of the inner shaft 74 and a film roll, and the film roll includes a plurality of short films, and the plurality of short films are wound around the outer end of the cylinder in a stacked manner, and there is a gap between the head and tail ends of an adjacent pair of short films ( Fig.13 The inner circle surface of the wound short film is fixedly connected with a release film, and the outer circle surface is coated with an adhesive layer.

[0031] In the initial state, if Fig.11 As shown, there is a certain distance between the upper end of the film sticking cylinder 75 and the height of the steel strip; when the camera 73 visually detects that there are burrs remaining on the lower surface of the steel strip, such as Fig.12 As shown, in order to further improve the surface quality of the steel section and reduce the impact on the roller shaft, a pair of cylinders 76 are started by the controller at this time, and the inner shaft 74 and the film sticking cylinder 75 are pushed upward by the elastic telescopic rod until the film sticking cylinder 75 contacts the lower surface of the steel strip and there is a certain degree of extrusion, so that the telescopic rod 77 is compressed to a certain extent, and the length of the compression spring 78 is shortened. When the film roll contacts the steel strip, with the movement of the steel strip and the rotation of the cylinder at the outer end of the inner shaft 74, the short film can be attached to the lower surface of the steel strip and cover the outer end of the burr. In the subsequent rolling process, it plays an effective isolation role between the roller shaft and the residual burr, so that the residual burr is not easy to be contaminated on the roller surface, and it is not easy to cause indentation on the subsequent steel strip surface. When the controller drives the cylinder 76 to extend a fixed length so that the film sticking tube 75 contacts the lower surface of the steel belt, the cylinder 76 is controlled to retract. Fig.14As shown, after the current short film is unwound, the next short film will not be unwound temporarily because it has not contacted the steel belt until the camera 73 detects residual burrs on the steel belt again. A smoothing rod 79 is provided at the end of the inner shaft 74 away from the camera 73. The lower end of the smoothing rod 79 is fixedly connected to the upper end of the frame 71 through a pair of support rods. The upper ends of the smoothing rod 79 and the cotton column 72 are at the same horizontal height. The unwound short film is smoothed and pressurized by the smoothing rod 79 to make it fit the surface of the steel belt.

[0032] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A cold-bent thin-walled steel keel forming system, comprising an unwinding machine (1), a leveling machine (2), a punching machine (3), a roll forming machine (4) and a shearing machine (5) which are arranged in sequence, characterized in that: A surface treatment machine (6) and a detection machine (7) are provided between the punching machine (3) and the roll forming machine (4), and the surface treatment machine (6) is located on a side close to the punching machine (3); The surface treatment machine (6) comprises a liquid tank (11) and a drive box (8) in which an electric motor is installed. The output end of the electric motor movably penetrates the outside of the drive box (8) and is fixedly connected to a disc (9). The outer end of the disc (9) is fixedly connected to a main gear (10). The outer end of the liquid tank (11) is fixedly connected to a water pump (12). The water inlet and the water outlet of the water pump (12) are fixedly extended into the liquid tank (11). A rotating disk (14) is provided on the upper side of the liquid tank (11). The outer end of the rotating disk (14) is fixedly connected to a secondary gear (13) meshing with the main gear (10). The upper end of the rotating disk (14) is fixedly connected to a central disk (15), an outer ring (17) and a plurality of grinding rings (16) of different sizes, the plurality of grinding rings (16) being arranged in a sleeve-like manner from the inside to the outside, the central disk (15) being fixedly connected to the inner end of the innermost grinding ring (16), the outer ring (17) being fixedly connected to the outer end of the outermost grinding ring (16), the upper end of the rotating disk (14) being provided with a plurality of liquid collecting grooves (1401) which are also arranged in an inner-outer and an outer-outer arrangement, the plurality of liquid collecting grooves (1401) being respectively located between a pair of inner and outer adjacent grinding rings (16); A liquid ring (20) is provided inside the liquid collecting trough (1401), and a plurality of uniformly distributed nozzles are fixedly connected to the upper end of the liquid ring (20). A coaxially arranged inner tube (18) and outer tube (19) are fixedly connected to the central portion of the turntable (14), and the outer tube (19) is fixedly connected to the outer end of the inner tube (18) and the inner end of the liquid tank (11). The lower end of the outer tube (19) movably penetrates the upper end of the liquid tank (11) and extends to the inner side thereof. The side end of the inner tube (18) is fixedly connected to a plurality of uniformly distributed nozzles in a circular shape. A liquid inlet branch pipe (21) is provided, wherein the plurality of liquid inlet branch pipes (21) all penetrate the inside of the disc (9) and the rotating disc (14) and are respectively fixedly connected to a pair of liquid rings (20); a plurality of liquid outlet branch pipes (22) are fixedly connected to the side end of the outer tube (19); the plurality of liquid outlet branch pipes (22) all penetrate the inside of the rotating disc (14) and are respectively connected to a pair of liquid collecting grooves (1401); a water outlet end of the water pump (12) is fixedly connected to a water pipe (1201), and an end of the water pipe (1201) is connected to the inside of the inner tube (18).

2. A cold-bent thin-walled steel keel forming system according to claim 1, characterized in that: The end of the water pipe (1201) away from the water pump (12) is in a vertically upward position, and extends into the interior of the inner pipe (18) and is rotatably connected thereto.

3. The cold-bent thin-walled steel keel forming system according to claim 1, characterized in that: The outer tube (19) has a "earth"-shaped structure, and a reflux channel (1901) for the flushing liquid to flow downward is provided between its inner wall and the outer wall of the inner tube (18).

4. The cold-bent thin-walled steel keel forming system according to claim 1, characterized in that: A partition (23) is slidably connected to the interior of the liquid box (11), and the outer tube (19) is located on a side of the partition (23) away from the water pump (12). In an initial state, the flushing liquid is stored on a side of the partition (23) close to the water pump (12).

5. The cold-bent thin-walled steel keel forming system according to claim 1, characterized in that: The detection machine (7) comprises a frame (71), the upper end of the frame (71) being fixedly connected to a camera (73), a cotton column (72) being provided on one side of the camera (73), and the lower end of the cotton column (72) being fixedly connected to the upper end of the frame (71) via a pair of pillars.

6. A cold-bent thin-walled steel keel forming system according to claim 5, characterized in that: An inner shaft (74) is provided on a side of the camera (73) away from the cotton column (72), and a film sticking cylinder (75) is wound around the outer end of the inner shaft (74). A pair of cylinders (76) are fixedly installed inside the frame (71), and the telescopic ends of the cylinders (76) are movably extended to the upper side of the frame (71), and an elastic telescopic rod is provided between the cylinders and the lower end of the inner shaft (74).

7. A cold-bent thin-walled steel keel forming system according to claim 6, characterized in that: The elastic telescopic rod comprises a telescopic rod (77) and a compression spring (78); the telescopic rod (77) is fixedly connected between the cylinder (76) and the inner shaft (74); and the compression spring (78) is sleeved on the outside of the telescopic rod (77).

8. The cold-bent thin-walled steel keel forming system according to claim 6, characterized in that: The film sticking cylinder (75) comprises a cylinder movably sleeved on the outside of the inner shaft (74) and a film roll, wherein the film roll comprises a plurality of short films, and the plurality of short films are wound around the outer end of the cylinder in a stacked manner, with a gap between the head and tail ends of an adjacent pair of short films, and the inner ring surface of the wound short films is fixedly connected to a release film, and the outer ring surface is coated with an adhesive layer.

9. The cold-bent thin-walled steel keel forming system according to claim 6, characterized in that: A smoothing rod (79) is provided at one end of the inner shaft (74) away from the camera (73); the lower end of the smoothing rod (79) is fixedly connected to the upper end of the frame (71) via a pair of support rods; the upper ends of the smoothing rod (79) and the cotton column (72) are located at the same level.

10. The cold-bent thin-walled steel keel forming system according to claim 6, characterized in that: A controller is fixedly connected to the side end of the frame (71), and the camera (73) and the cylinder (76) are both electrically connected to the controller.

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