Silicon steel pickling method and silicon steel pickling device

Abstract

The application discloses a silicon steel pickling method and device, and belongs to the technical field of silicon steel pickling. The device comprises a multi-station cleaning assembly and a movable scraping assembly. The device further comprises a buffer assembly for winding the silicon steel strip and providing a buffer length for the silicon steel strip when the end connection assembly is started; a double-station feeding assembly for mounting two silicon steel strip coils; and an end connection assembly for fixedly connecting the end of the upper silicon steel strip coil and the start of the lower silicon steel strip coil. In the above manner, the application can timely connect the next silicon steel strip after the release of the current silicon steel strip, without stopping the operation. Meanwhile, the double-station feeding assembly can connect the end of the next silicon steel strip to the old silicon steel strip when the old silicon steel strip is almost used up, so as to prepare for the subsequent connection, realize double feeding positions, and facilitate the feeding operation of the silicon steel strip.

Description

Technical Field

[0001] This invention relates to the field of silicon steel pickling technology, specifically to a silicon steel pickling method and a silicon steel pickling apparatus. Background Technology

[0002] Pickling equipment is used to remove oxide scale from hot-rolled steel strips. Its principle is to immerse the steel strip in multiple pickling tanks containing pickling solution in sequence, and react chemically with the pickling solution to remove the oxide scale on the surface.

[0003] Currently, there are many pickling devices. For example, Chinese utility model patent CN218910529U discloses a high-precision pickling device for ultra-thin and extra-wide cold-rolled steel strips. The steel strip is released from a winding shaft on one side, passes through a cleaning box, and is then wound up by a winding shaft on the other side. The steel strip passing through the cleaning box is first pickled by a pickling nozzle on one side of the cleaning box. At the same time, a brush works with the pickling nozzle to pickle the steel strip, forming an assembly line.

[0004] However, the above structure still has the following problems: the steel strip is generally wound on a special reel. After one reel of steel strip is released, the next reel of steel strip needs to be released. At this time, the machine needs to be stopped to fix the ends of the two reels of steel strip. At the same time, due to the large weight of the steel coil, a more convenient feeding structure needs to be designed to facilitate the replacement of the steel coil.

[0005] Based on this, the present invention designs a silicon steel pickling method and a silicon steel pickling apparatus to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a silicon steel pickling method and silicon steel pickling apparatus.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A method for pickling silicon steel includes the following steps:

[0009] 1. Add different pickling solutions sequentially to multiple pickling tanks of the silicon steel pickling device; maintain the temperature of the pickling solution at 45-60℃;

[0010] 2. Before the silicon steel strip enters the multiple pickling tanks of the silicon steel pickling device, the silicon steel strip is heated by a hot air device located on one side of the silicon steel pickling device, and the heating temperature is controlled at 90-101℃.

[0011] 3. The silicon steel strip is continuously transported to each pickling tank through the silicon steel pickling device, and is pickled in different pickling solutions in turn to remove the oxide scale on the surface of the silicon steel strip.

[0012] 4. Replace the pickling solution in each pickling tank at regular intervals;

[0013] A silicon steel pickling apparatus includes a multi-station cleaning unit;

[0014] The multi-station cleaning assembly is equipped with multiple sets of movable scraping components for movable scraping of the outer surface of silicon steel strip and fixed scraping of the inner surface of silicon steel strip.

[0015] Also includes:

[0016] A buffer assembly used for winding silicon steel strip and providing buffer length to the silicon steel strip when the end connection assembly is started;

[0017] A dual-station feeding assembly for installing two rolls of silicon steel strip; during normal feeding, the two rolls of silicon steel strip are in a horizontal state. When the old roll of silicon steel strip is about to be used up, the dual-station feeding assembly drives the two rolls of silicon steel strip to adjust to a vertical state, with the old roll of silicon steel strip at the bottom and the end of the new roll of silicon steel strip overlapping the old roll of silicon steel strip.

[0018] End connection assembly used to fix the end of the previous roll of silicon steel strip to the beginning of the next roll of silicon steel strip.

[0019] Furthermore, the multi-station cleaning assembly includes a cleaning tank, a first guide roller, and a second guide roller; the interior of the cleaning tank is divided into multiple pickling tanks, and the first guide roller and the second guide roller are rotatably installed on both sides of the upper end and both sides of the lower end of the interior of each pickling tank; the silicon steel strip passes around the first guide roller and the second guide roller in each pickling tank in sequence; the second guide roller contacts the outer wall of the silicon steel strip, and the first guide roller contacts the inner wall of the silicon steel strip.

[0020] Furthermore, the movable scraping assembly includes a horizontal shaft, a torsion spring, a movable scraper, and a fixed scraper; each pickling tank has a fixed scraper fixedly installed inside and a movable scraper rotatably installed inside; the two ends of the movable scraper are respectively fixedly connected to the horizontal shaft, which is rotatably connected to the side wall of the pickling tank; one side of the horizontal shaft passes through the side wall of the pickling tank and is equipped with a torsion spring, the inner end of the torsion spring is fixedly connected to the horizontal shaft, and the outer end of the torsion spring is fixedly connected to the outer wall of the cleaning tank; the fixed scraper and the movable scraper are respectively in contact with the inner and outer walls of the silicon steel strip wound on the first guide roller on the left side of the pickling tank, and the movable scraper and the fixed scraper are located below the first guide roller.

[0021] Furthermore, the buffer assembly includes a linear guide rail assembly, a counterweight, a first pulley, a steel rope, a second pulley, a first motor, a horizontal plate, a frame, a third guide roller, a guide rod, a horizontal connecting plate, a first bevel gear, a second bevel gear, a horizontal shaft, and a movable roller; a horizontal plate is fixedly connected to the top of the frame, a first motor is fixedly mounted on the horizontal plate, a second bevel gear is fixedly connected to the output end of the first motor, the second bevel gear meshes with the first bevel gear, the first bevel gear is fixedly mounted on the horizontal shaft, the two ends of the horizontal shaft are respectively rotatably mounted on the support seats at the front and rear ends of the top of the frame, and a second pulley is fixedly connected to each end of the horizontal shaft, with the second pulley... All are connected with steel ropes. One end of each steel rope passes over a first pulley fixedly installed on the frame and is then fixedly connected to a counterweight. The counterweight is slidably connected to the frame via a linear guide rail assembly. Several sets of third guide rollers are rotatably installed inside the upper end of the frame. Horizontal connecting plates are slidably connected to the front and rear ends of the frame. The other ends of the two steel ropes are fixedly connected to the front and rear horizontal connecting plates, respectively. Several vertical guide rods are fixedly connected to the front and rear ends of the frame. The horizontal connecting plates are slidably connected to the guide rods. Several sets of movable rollers corresponding to the upper and lower third guide rollers are rotatably installed between the front and rear guide rods. Silicon steel strips pass over the third guide rollers and movable rollers in sequence.

[0022] Furthermore, the end connection assembly includes a cylinder, a slide rod, a support base, a fixed frame, a mounting plate, an upper electric heating assembly, a lower electric heating assembly, a straight groove, and a pressure roller. The frame is located between the multi-station cleaning assembly and the support base. A fixed frame is fixedly connected to the top of the support base, and a cylinder is fixedly connected to the top of the fixed frame. A mounting plate is fixedly connected to the output end of the cylinder. The mounting plate is located inside the fixed frame. An upper electric heating assembly is fixedly connected to the bottom of the mounting plate. Slide rods are fixedly connected to both ends of the top of the mounting plate, and the slide rods are slidably connected to the fixed frame. A straight groove is provided at the upper end of the support base for embedding and fixing the lower electric heating assembly. The upper and lower electric heating assemblies correspond vertically. A pressure roller is rotatably installed on the side of the frame near the end connection assembly.

[0023] Furthermore, the bottom height of the pressure roller is lower than the top height of the support base; the top of the lower electric heating assembly is flush with the top of the support base.

[0024] Furthermore, the dual-station feeding assembly includes a support roller, a rotating plate, a horizontal connecting shaft, a third bevel gear, a second bevel gear, a second motor, a fixed support base, an arc-shaped slider, and an annular guide rail. The lower end of the fixed support base is fixedly connected to the second motor, and the output end of the second motor is fixedly connected to the second bevel gear. The second bevel gear meshes with the third bevel gear. The third bevel gear is fixedly installed at one end of the horizontal connecting shaft, and the horizontal connecting shaft is rotatably installed at the upper end of the fixed support base. The other end of the horizontal connecting shaft is fixedly connected to the rotating plate, and the two ends of the rotating plate are respectively rotatably mounted with support rollers. A coiled silicon steel strip is wound around the support roller.

[0025] Furthermore, an arc-shaped slider is fixedly connected to the rear end of the rotating plate, and the arc-shaped slider is slidably connected to the annular guide rail, which is fixedly installed on the front wall of the fixed support base.

[0026] Beneficial effects

[0027] In use, two rolls of silicon steel strip are installed on a dual-station feeding assembly. During normal feeding, the two rolls are horizontal. After being wound by a buffer assembly, the silicon steel strip is conveyed to a multi-station cleaning assembly for pickling. The outer surface of the silicon steel strip is scraped by a movable scraping component within the multi-station cleaning assembly, while the inner surface is scraped by a fixed scraping component. Before entering the multi-station cleaning assembly, the silicon steel strip is heated by an external hot air device located on one side of the assembly. When an old roll of silicon steel strip is almost used up, for example, when one-sixth to one-eighth of the roll remains... At first, the dual-station feeding assembly moves two rolls of silicon steel strip to a vertical position, with the old roll of silicon steel strip below and the end of the new roll overlapping the old roll, preparing for subsequent connection. When the old roll of silicon steel strip is used up, the buffer assembly is activated to provide buffer length to the silicon steel strip, and at the same time, the end connection assembly fixes the end of the previous roll of silicon steel strip to the beginning of the next roll of silicon steel strip. After that, the end connection assembly resets. Then, the dual-station feeding assembly is activated again to move the two rolls of silicon steel strip to a horizontal position, and the buffer assembly resets.

[0028] This invention enables the immediate connection of the next roll of steel strip after one roll has been released, without requiring machine downtime. Simultaneously, the dual-station feeding assembly allows for the overlap of the end of another roll of silicon steel strip with the old roll when it is nearly empty, preparing for subsequent connections. This dual feeding position facilitates the feeding of silicon steel strip. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 The three-dimensional structure of the silicon steel pickling device of the present invention. Figure 1 ;

[0031] Figure 2 This is a front view of the silicon steel pickling apparatus of the present invention;

[0032] Figure 3This is a left view of the silicon steel pickling apparatus structure of the present invention;

[0033] Figure 4 The three-dimensional structure of the silicon steel pickling device of the present invention. Figure 2 ;

[0034] Figure 5 The three-dimensional structure of the silicon steel pickling device of the present invention. Figure 3 ;

[0035] Figure 6 The three-dimensional structure of the silicon steel pickling device of the present invention. Figure 4 ;

[0036] Figure 7 The three-dimensional structure of the silicon steel pickling device of the present invention. Figure 5 ;

[0037] Figure 8 The three-dimensional structure of the silicon steel pickling device of the present invention. Figure 6 ;

[0038] Figure 9 For along Figure 3 A sectional view along the AA direction;

[0039] Figure 10 for Figure 7 Enlarged view of point B in the middle.

[0040] The labels in the diagram represent:

[0041] 1. Multi-station cleaning assembly; 11. Cleaning tank; 12. First guide roller; 13. Second guide roller; 2. Movable scraping assembly; 21. Horizontal shaft; 22. Torsion spring; 23. Movable scraper; 24. Fixed scraper; 3. Buffer assembly; 31. Linear guide rail assembly; 32. Counterweight; 33. First pulley; 34. Steel rope; 35. Second pulley; 36. First motor; 37. Horizontal plate; 38. Frame; 39. Third guide roller; 310. Guide rod; 311. Horizontal connecting plate; 312. First bevel gear; 313. Second... 314. Bevel gear; 315. Horizontal shaft; 4. Movable roller; 4. End connecting assembly; 41. Cylinder; 42. Slide rod; 43. Support base; 44. Fixed frame; 45. Mounting plate; 46. Upper electric heating assembly; 47. Lower electric heating assembly; 48. Straight groove; 49. Pressure roller; 5. Dual-station feeding assembly; 51. Support roller; 52. Rotating plate; 53. Horizontal connecting shaft; 54. Third bevel gear; 55. Second bevel gear; 56. Second motor; 57. Fixed support base; 58. Arc-shaped slider; 59. Circular guide rail. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] The present invention will be further described below with reference to embodiments.

[0044] Example 1

[0045] This embodiment provides a method for pickling silicon steel, including the following steps:

[0046] 1. Add different pickling solutions sequentially to the multiple pickling tanks of the silicon steel pickling device; maintain the temperature of the pickling solution at 45℃;

[0047] 2. Before the silicon steel strip enters the multiple pickling tanks of the silicon steel pickling device, the silicon steel strip is heated by a hot air device located on one side of the silicon steel pickling device, and the heating temperature is controlled at 101℃.

[0048] 3. The silicon steel strip is continuously transported to each pickling tank through the silicon steel pickling device, and is pickled in different pickling solutions in turn to remove the oxide scale on the surface of the silicon steel strip.

[0049] 4. Replace the pickling solution in each pickling tank at regular intervals to ensure the pickling effect.

[0050] Example 2

[0051] This embodiment provides a method for pickling silicon steel, including the following steps:

[0052] 1. Add different pickling solutions sequentially to multiple pickling tanks of the silicon steel pickling device; maintain the temperature of the pickling solution at 60℃;

[0053] 2. Before the silicon steel strip enters the multiple pickling tanks of the silicon steel pickling device, the silicon steel strip is heated by a hot air device located on one side of the silicon steel pickling device, and the heating temperature is controlled at 90℃.

[0054] 3. The silicon steel strip is continuously transported to each pickling tank through the silicon steel pickling device, and is pickled in different pickling solutions in turn to remove the oxide scale on the surface of the silicon steel strip.

[0055] 4. Replace the pickling solution in each pickling tank at regular intervals to ensure the pickling effect.

[0056] Example 3

[0057] This embodiment provides a method for pickling silicon steel, including the following steps:

[0058] 1. Add different pickling solutions sequentially to multiple pickling tanks of the silicon steel pickling device; maintain the temperature of the pickling solution at 50℃;

[0059] 2. Before the silicon steel strip enters the multiple pickling tanks of the silicon steel pickling device, the silicon steel strip is heated by a hot air device located on one side of the silicon steel pickling device, and the heating temperature is controlled at 95℃.

[0060] 3. The silicon steel strip is continuously transported to each pickling tank through the silicon steel pickling device, and is pickled in different pickling solutions in turn to remove the oxide scale on the surface of the silicon steel strip.

[0061] 4. Replace the pickling solution in each pickling tank at regular intervals to ensure the pickling effect.

[0062] Example 4

[0063] Please refer to the instruction manual appendix. Figure 1-10 A silicon steel pickling device, comprising a multi-station cleaning assembly 1;

[0064] The multi-station cleaning assembly 1 is equipped with multiple sets of movable scraping assemblies 2 for movable scraping of the outer surface of silicon steel strip and fixed scraping of the inner surface of silicon steel strip;

[0065] Also includes:

[0066] Buffer assembly 3 is used to wind silicon steel strip and provide buffer length to silicon steel strip when end connection assembly 4 is started;

[0067] The dual-station feeding assembly 5 is used to install two rolls of silicon steel strip. During normal feeding, the two rolls of silicon steel strip are in a horizontal state. When the old roll of silicon steel strip is almost used up, for example, when there is one-sixth to one-eighth left, the dual-station feeding assembly 5 drives the two rolls of silicon steel strip to adjust to a vertical state, with the old roll of silicon steel strip located below and the end of the new roll of silicon steel strip overlapping the old roll of silicon steel strip.

[0068] End connection assembly 4 is used to fix the end of the previous roll of silicon steel strip to the beginning of the next roll of silicon steel strip.

[0069] In use, two rolls of silicon steel strip are installed on the dual-station feeding assembly 5. During normal feeding, the two rolls of silicon steel strip are in a horizontal state. After being wound by the buffer assembly 3, the silicon steel strip is conveyed to the multi-station cleaning assembly 1 for pickling. The movable scraping assembly 2 in the multi-station cleaning assembly 1 is used to scrape the outer surface of the silicon steel strip and to scrape the inner surface of the silicon steel strip. Before the silicon steel strip enters the multi-station cleaning assembly 1, it is heated by an external hot air device located on one side of the multi-station cleaning assembly 1. When the old roll of silicon steel strip is almost used up, for example, when one-sixth to one-eighth of it remains... At first, the dual-station feeding assembly 5 moves the two rolls of silicon steel strip to a vertical position, with the old roll of silicon steel strip at the bottom and the end of the new roll of silicon steel strip overlapping the old roll, preparing for subsequent connection; when the old roll of silicon steel strip is used up, the buffer assembly 3 is activated to provide buffer length to the silicon steel strip, and at the same time, the end connection assembly 4 fixes the end of the previous roll of silicon steel strip to the beginning of the next roll of silicon steel strip, and then the end connection assembly 4 is reset; then the dual-station feeding assembly 5 is activated again to move the two rolls of silicon steel strip to a horizontal position, and the buffer assembly 3 is activated to reset.

[0070] This invention enables the immediate connection of the next roll of steel strip after one roll has been released, without requiring machine downtime. Simultaneously, the dual-station feeding assembly 5 allows for the overlap of the end of another roll of silicon steel strip with the old roll when it is nearly empty, preparing for subsequent connections. This dual feeding position facilitates the feeding of silicon steel strip.

[0071] Preferably, the multi-station cleaning assembly 1 includes a cleaning tank 11, a first guide roller 12, and a second guide roller 13; the interior of the cleaning tank 11 is divided into multiple pickling tanks, and the first guide roller 12 and the second guide roller 13 are rotatably installed on both sides of the upper end and both sides of the lower end of the interior of each pickling tank; the silicon steel strip passes around the first guide roller 12 and the second guide roller 13 in each pickling tank in sequence; the second guide roller 13 contacts the outer wall of the silicon steel strip, and the first guide roller 12 contacts the inner wall of the silicon steel strip;

[0072] The silicon steel strip is driven to move by an external winding structure. The silicon steel strip is transferred through the buffer assembly 3 to multiple pickling tanks inside the cleaning box 11 and is guided and transferred by the first guide roller 12 and the second guide roller 13.

[0073] The movable scraping assembly 2 includes a horizontal shaft 21, a torsion spring 22, a movable scraper 23, and a fixed scraper 24. Each pickling tank has a fixed scraper 24 and a rotatably mounted movable scraper 23. The two ends of the movable scraper 23 are fixedly connected to the horizontal shaft 21, which is rotatably connected to the side wall of the pickling tank. One side of the horizontal shaft 21 passes through the side wall of the pickling tank and is fitted with a torsion spring 22. The inner end of the torsion spring 22 is fixedly connected to the horizontal shaft 21, and the outer end of the torsion spring 22 is fixedly connected to the outer wall of the cleaning tank 11. The fixed scraper 24 and the movable scraper 23 are respectively in contact with the inner and outer walls of the silicon steel strip wound on the first guide roller 12 on the left side of the pickling tank, and the movable scraper 23 and the fixed scraper 24 are located below the first guide roller 12.

[0074] Since there are connecting seams on both the inner and outer sides of the silicon steel strip after it is connected by the end connecting component 4, when the new silicon steel strip is placed on top of the old silicon steel strip and passes through the movable scraper 23 and the fixed scraper 24, the fixed scraper 24 is set to be movable because it is against the connecting seam, which ensures that a certain amount of clearance is provided when passing through the connecting seam. The movable scraper 23 is set to be fixed because it is along the connecting seam. This helps to prevent the connecting seam from being worn or even broken when it passes through the fixed scraper 24 multiple times, which is more reasonable.

[0075] The buffer assembly 3 includes a linear guide rail assembly 31, a counterweight 32, a first pulley 33, a steel rope 34, a second pulley 35, a first motor 36, a horizontal plate 37, a frame 38, a third guide roller 39, a guide rod 310, a horizontal connecting plate 311, a first bevel gear 312, a second bevel gear 313, a horizontal shaft 314, and a movable roller 315. A horizontal plate 37 is fixedly connected to the top of the frame 38. A first motor 36 is fixedly mounted on the horizontal plate 37. A second bevel gear 313 is fixedly connected to the output end of the first motor 36. The second bevel gear 313 meshes with the first bevel gear 312. The first bevel gear 312 is fixedly mounted on the horizontal shaft 314. The two ends of the horizontal shaft 314 are rotatably mounted on the support seats at the front and rear ends of the top of the frame 38. Second pulleys 35 are fixedly connected to the two ends of the horizontal shaft 314. Each pulley 35 is connected to a steel rope 34. One end of each steel rope 34 passes over the first pulley 33 fixedly installed on the frame 38 and is fixedly connected to the counterweight 32. The counterweight 32 is vertically limited and slidably connected to the frame 38 through the linear guide rail assembly 31. Several sets of third guide rollers 39 are rotatably installed inside the upper end of the frame 38. The front and rear ends of the frame 38 are vertically slidably connected to horizontal connecting plates 311. The other ends of the two steel ropes 34 are fixedly connected to the front and rear horizontal connecting plates 311. Several vertical guide rods 310 are fixedly connected to the front and rear ends of the frame 38. The horizontal connecting plates 311 are slidably connected to the guide rods 310. Several sets of movable rollers 315, corresponding to the upper and lower parts of the third guide rollers 39, are rotatably installed between the front and rear guide rods 310. The silicon steel strip passes over the third guide rollers 39 and the movable rollers 315 in sequence.

[0076] Preferably, the linear guide assembly 31 can adopt a structure of guide rail and sliding mechanism;

[0077] When the end connection assembly 4 needs to be started, the first motor 36 starts and drives the second bevel gear 313 to rotate. The second bevel gear 313 drives the first bevel gear 312 to rotate. The first bevel gear 312 drives the horizontal shaft 314 to rotate. The horizontal shaft 314 drives the movable roller 315 to rotate. The movable roller 315 drives the steel rope 34 to move. The steel rope 34 drives the counterweight 32 to move downward under the guidance of the linear guide assembly 31. The horizontal connecting plate 311 moves upward along the guide rod 310. The horizontal connecting plate 311 drives the movable roller 315 to move upward, so that the distance between the movable roller 315 and the third guide roller 39 is reduced, and the silicon steel strip is relaxed. At this time, the silicon steel strip can continue to move gradually to the multi-station cleaning assembly 1, ensuring that the silicon steel strip can still be continuously acid-washed when the end connection assembly 4 is working. The counterweight 32 can reduce the driving force of the first motor 36.

[0078] The end connection assembly 4 includes a cylinder 41, a slide bar 42, a support base 43, a fixing frame 44, a mounting plate 45, an upper electric heating assembly 46, a lower electric heating assembly 47, a straight groove 48, and a pressure roller 49; the frame 38 is located between the multi-station cleaning assembly 1 and the support base 43. The top of the support base 43 is fixedly connected to the fixing frame 44, and the top of the fixing frame 44 is fixedly connected to the cylinder 41. The output end of the cylinder 41 is fixedly connected to the mounting plate 45, which is located inside the fixing frame 44. The bottom of the mounting plate 45 is fixedly connected to... The upper electric heating component 46 is provided. Slide rods 42 are fixedly connected to the top two ends of the mounting plate 45, and slide rods 42 are slidably connected to the fixing frame 44. The upper end of the support base 43 is provided with a straight groove 48 for embedding and fixing the lower electric heating component 47. The upper electric heating component 46 and the lower electric heating component 47 are vertically corresponding. A pressure roller 49 is rotatably installed on the side of the frame 38 near the end connecting component 4. The bottom height of the pressure roller 49 is lower than the top height of the support base 43. The top of the lower electric heating component 47 is flush with the top of the support base 43.

[0079] When connecting two silicon steel strips, the end of the new silicon steel strip roll overlaps the end of the old silicon steel strip roll. The silicon steel strip is pressed down by the pressure roller 49 to ensure that the silicon steel strip is in a horizontal state during heat welding. The starting cylinder 41 drives the mounting plate 45 to move under the guidance of the slide rod 42. The mounting plate 45 drives the upper electric heating component 46 to move downward. The lower electric heating component 47 and the upper electric heating component 46 heat and fix the ends of the two silicon steel strips.

[0080] The dual-station feeding assembly 5 includes a support roller 51, a rotating plate 52, a horizontal connecting shaft 53, a third bevel gear 54, a second bevel gear 55, a second motor 56, a fixed support base 57, an arc-shaped slider 58, and an annular guide rail 59. The lower end of the fixed support base 57 is fixedly connected to the second motor 56, and the output end of the second motor 56 is fixedly connected to the second bevel gear 55. The second bevel gear 55 meshes with the third bevel gear 54. The third bevel gear 54 is fixedly installed at one end of the horizontal connecting shaft 53, and the horizontal connecting shaft 53 is rotatably installed at the upper end of the fixed support base 57. The other end of the horizontal connecting shaft 53 is fixedly connected to the rotating plate 52. The two ends of the rotating plate 52 are respectively rotatably mounted with the support roller 51, and the wound silicon steel strip is wound on the support roller 51. The rear end of the rotating plate 52 is fixedly connected to the arc-shaped slider 58, and the arc-shaped slider 58 is slidably connected to the annular guide rail 59. The annular guide rail 59 is fixedly installed on the front wall of the fixed support base 57.

[0081] During use, two rolls of silicon steel strip are installed on the support roller 51. Under normal feeding conditions, the rotating plate 52 is horizontal. When the old roll of silicon steel strip is almost used up, for example, when only one-sixth to one-eighth remains, the second motor 56 is started to drive the second bevel gear 55 to rotate. The second bevel gear 55, through the third bevel gear 54, drives the horizontal connecting shaft 53 to rotate. The horizontal connecting shaft 53 drives the rotating plate 52 to rotate stably to a vertical position under the limiting action of the arc-shaped slider 58 and the annular guide rail 59. The two rolls of silicon steel strip are then adjusted... When aligned to a vertical position, the old roll of silicon steel strip is positioned below, and the end of the new roll of silicon steel strip overlaps the old roll, preparing for subsequent connection. After the two rolls of silicon steel strip are connected, the dual-station feeding assembly 5 is activated to bring the two rolls of silicon steel strip into a horizontal position. This allows the end of the other roll of silicon steel strip to overlap the old roll when it is almost used up, preparing for subsequent connection. This dual feeding position makes the feeding operation of silicon steel strip more convenient.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A silicon steel pickling apparatus, comprising a multi-station cleaning assembly (1), characterized in that: The multi-station cleaning assembly (1) is equipped with multiple sets of movable scraping assemblies (2) for movable scraping of the outer surface of silicon steel strip and fixed scraping of the inner surface of silicon steel strip. Also includes: A buffer assembly (3) for winding silicon steel strip and providing buffer length to silicon steel strip when the end connection assembly (4) is started; The dual-station feeding assembly (5) is used to install two rolls of silicon steel strip. During normal feeding, the two rolls of silicon steel strip are in a horizontal state. When the old roll of silicon steel strip is about to be used up, the dual-station feeding assembly (5) drives the two rolls of silicon steel strip to be adjusted to a vertical state. The old roll of silicon steel strip is located below, and the end of the new roll of silicon steel strip overlaps on the old roll of silicon steel strip. End connection assembly (4) for fixing the end of the previous roll of silicon steel strip to the beginning of the next roll of silicon steel strip. The multi-station cleaning assembly (1) includes a cleaning tank (11), a first guide roller (12), and a second guide roller (13). The interior of the cleaning tank (11) is divided into multiple pickling tanks. The first guide roller (12) and the second guide roller (13) are rotatably installed on the upper and lower sides of the interior of each pickling tank, respectively. The silicon steel strip passes around the first guide roller (12) and the second guide roller (13) in each pickling tank in sequence. The second guide roller (13) contacts the outer wall of the silicon steel strip, and the first guide roller (12) contacts the inner wall of the silicon steel strip. The movable scraping assembly (2) includes a horizontal shaft (21), a torsion spring (22), a movable scraper (23), and a fixed scraper (24). Each pickling tank has a fixed scraper (24) and a movable scraper (23) installed inside. The two ends of the movable scraper (23) are respectively fixedly connected to the horizontal shaft (21). The horizontal shaft (21) is rotatably connected to the side wall of the pickling tank. One side of the horizontal shaft (21) passes through the side wall of the pickling tank and is equipped with a torsion spring (22). The inner end of the torsion spring (22) is fixedly connected to the horizontal shaft (21), and the outer end of the torsion spring (22) is fixedly connected to the outer wall of the cleaning box (11). The fixed scraper (24) and the movable scraper (23) are respectively in contact with the inner and outer walls of the silicon steel strip wound on the first guide roller (12) on the left side of the pickling tank, and the movable scraper (23) and the fixed scraper (24) are located below the first guide roller (12). The buffer assembly (3) includes a linear guide rail assembly (31), a counterweight (32), a first pulley (33), a steel rope (34), a second pulley (35), a first motor (36), a horizontal plate (37), a frame (38), a third guide roller (39), a guide rod (310), a horizontal connecting plate (311), a first bevel gear (312), a second bevel gear (313), a horizontal shaft (314), and a movable roller (315); the top of the frame (38) is fixedly connected to the horizontal plate. (37) A first motor (36) is fixedly installed on the horizontal plate (37). A second bevel gear (313) is fixedly connected to the output end of the first motor (36). The second bevel gear (313) meshes with the first bevel gear (312). The first bevel gear (312) is fixedly installed on the horizontal shaft (314). The two ends of the horizontal shaft (314) are respectively rotatably installed on the support brackets at the front and rear ends of the top of the frame (38). The two ends of the horizontal shaft (314) are respectively fixedly connected to the second sliding plate. Steel ropes (34) are connected to both the first pulley (35) and the second pulley (35). One end of the steel rope (34) passes over the first pulley (33) fixedly installed on the frame (38) and is fixedly connected to the counterweight (32). The counterweight (32) is vertically limited and slidably connected to the frame (38) through the linear guide rail assembly (31). Several sets of third guide rollers (39) are rotatably installed inside the upper end of the frame (38). Horizontal connecting plates (39) are slidably connected to the front and rear ends of the frame (38). 11) The other ends of the two steel ropes (34) are fixedly connected to the front and rear horizontal connecting plates (311) respectively. Several vertical guide rods (310) are fixedly connected to the front and rear ends of the frame (38). The horizontal connecting plate (311) is slidably connected to the guide rods (310). Several sets of movable rollers (315) corresponding to the upper and lower of the third guide roller (39) are rotatably installed between the front and rear guide rods (310). The silicon steel strip passes around the third guide roller (39) and the movable roller (315) in sequence.

2. The silicon steel pickling apparatus according to claim 1, characterized in that, The end connection assembly (4) includes a cylinder (41), a slide rod (42), a support base (43), a fixing frame (44), a mounting plate (45), an upper electric heating assembly (46), a lower electric heating assembly (47), a straight groove (48), and a pressure roller (49); the frame (38) is located between the multi-station cleaning assembly (1) and the support base (43). The top of the support base (43) is fixedly connected to the fixing frame (44), and the top of the fixing frame (44) is fixedly connected to the cylinder (41). The output end of the cylinder (41) is fixedly connected to the mounting plate (45). The mounting plate (45) is located inside the fixed frame (44). The bottom of the mounting plate (45) is fixedly connected to the upper electric heating component (46). The top two ends of the mounting plate (45) are respectively fixedly connected to the sliding rod (42). The sliding rod (42) is slidably connected to the fixed frame (44). The upper end of the support base (43) is provided with a straight groove (48) for embedding and fixing the lower electric heating component (47). The upper electric heating component (46) and the lower electric heating component (47) are vertically aligned. The frame (38) is rotatably mounted with a pressure roller (49) on the side near the end connecting component (4).

3. The silicon steel pickling apparatus according to claim 2, characterized in that, The bottom height of the pressure roller (49) is lower than the top height of the support (43); the top of the lower electric heating assembly (47) is flush with the top of the support (43).

4. The silicon steel pickling apparatus according to claim 2 or 3, characterized in that, The dual-station feeding assembly (5) includes a support roller (51), a rotating plate (52), a horizontal connecting shaft (53), a third bevel gear (54), a second bevel gear (55), a second motor (56), a fixed support base (57), an arc-shaped slider (58), and an annular guide rail (59). The lower end of the fixed support base (57) is fixedly connected to the second motor (56), and the output end of the second motor (56) is fixedly connected to the second bevel gear (55). The second bevel gear (55) meshes with the third bevel gear (54). The third bevel gear (54) is fixedly installed at one end of the horizontal connecting shaft (53). The horizontal connecting shaft (53) is rotatably installed at the upper end of the fixed support base (57). The other end of the horizontal connecting shaft (53) is fixedly connected to the rotating plate (52). The two ends of the rotating plate (52) are respectively rotatably installed with support rollers (51), and the rolled silicon steel strip is wound on the support rollers (51).

5. The silicon steel pickling apparatus according to claim 4, characterized in that, The rear end of the rotating plate (52) is fixedly connected to an arc-shaped slider (58), which is slidably connected to an annular guide rail (59). The annular guide rail (59) is fixedly installed on the front wall of the fixed support base (57).

6. A method for pickling silicon steel using the silicon steel pickling apparatus as described in claim 5, characterized in that, Includes the following steps:

1. Add different pickling solutions sequentially to multiple pickling tanks of the silicon steel pickling device; maintain the temperature of the pickling solution at 45~60℃; 2. Before the silicon steel strip enters the multiple pickling tanks of the silicon steel pickling device, the silicon steel strip is heated by a hot air device located on one side of the silicon steel pickling device, and the heating temperature is controlled at 90~101℃.

3. The silicon steel strip is continuously transported to each pickling tank through the silicon steel pickling device, and is pickled in different pickling solutions in turn to remove the oxide scale on the surface of the silicon steel strip.

4. Replace the pickling solution in each pickling tank at regular intervals.

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