A pretreatment line for steel plates and steel products

Abstract

This invention belongs to the field of grinding and rust removal technology, specifically referring to a pretreatment line for steel plates. It includes a rotary rust removal assembly, a spraying assembly, a roll forming assembly, a drying assembly, a roller conveying assembly, a frame, and a steel plate. The roller conveying assembly is arrayed on the frame, and the steel plate is placed on the roller conveying assembly. The rotary rust removal assembly, drying assembly, and roll forming assembly are all located on the frame. This invention utilizes a layered structure design for the grinding strips, enabling them to automatically adapt to the surface contours of the steel plate, thus improving grinding and rust removal efficiency while ensuring the desired effect. Furthermore, this invention proposes a spraying assembly that, through single-sided spraying combined with a water storage tank, can simultaneously wet both the upper and lower surfaces of the steel plate. Pre-wetting the surface before grinding reduces dust generation during the grinding and rust removal process and cools the grinding area, preventing excessively high temperatures of the grinding tools and workpieces.

Description

Technical Field

[0001] This invention belongs to the field of grinding and rust removal technology, specifically referring to a pretreatment line for steel plates and materials. Background Technology

[0002] During long-term storage, steel plates are prone to deformation due to stress release and support span, and the surface may also rust. Therefore, before using steel plates for final processing such as bending and stamping, they need to be ground, rust removed and shaped.

[0003] Grinding is usually done with sandpaper, but because sandpaper is thin, it is difficult for it to contact a large area of ​​the steel plate at the same time if the steel plate is deformed. Therefore, existing grinding and rust removal devices often have a small area, resulting in low rust removal efficiency. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention proposes a grinding and rust removal device based on a flexible grinding strip. Through the layered structure design of the grinding strip, the grinding strip can automatically adapt to the surface contour of the steel plate, thereby improving the grinding and rust removal efficiency while ensuring the grinding and rust removal effect. Furthermore, this invention proposes a spray assembly that, through a combination of single-sided spraying and a water storage tank, can simultaneously wet both the upper and lower surfaces of the steel plate. By pre-wetting the surface before grinding, dust generated during the grinding and rust removal process can be reduced, and the grinding area can be cooled to prevent the grinding tool and workpiece from overheating. At the same time, it can also reduce the possibility of deformation of the steel plate due to the increased temperature during grinding.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a pretreatment line for steel plates, including a rotary rust removal assembly, a spraying assembly, a roll forming assembly, a drying assembly, a roller conveying assembly, a frame, and a steel plate. The roller conveying assembly is arrayed on the frame, and the steel plate is placed on the roller conveying assembly. The rotary rust removal assembly, the drying assembly, and the roll forming assembly are all located on the frame, and are symmetrically arranged on both sides of the steel plate. The spraying assembly is located on the frame. The rotary rust removal assembly includes an inclined shaft and a grinding strip, with both ends of the grinding strip fixedly connected to the inclined shaft.

[0006] Furthermore, the polishing strip consists of a central hard rubber cylinder and an outer sandpaper, and the tilting shaft has a tilt angle; When the grinding strip is stationary, the center will droop; when the grinding strip rotates, it will form an arch and adhere to the surface of the steel plate.

[0007] The tilting shaft rotating rust removal component is tilted slightly. The main body of the grinding strip is fixed to a deformable hard rubber, and a steel wire rope or steel wire curtain is set in the center of the hard rubber to prevent the grinding strip from being stretched and deformed.

[0008] By designing a layered structure for the grinding strip, it can naturally droop when stationary and tend to arch when rotating at high speed. This allows the outer layer of sandpaper to not only contact the surface of the steel plate but also automatically match the contour fluctuations of the steel plate, ensuring the rust removal effect.

[0009] Preferably, the rotary rust removal assembly further includes a bevel gear, a rotary support, and a bearing, wherein the rotary support is mounted on the frame, and the bearing is located between the inclined shaft and the rotary support. The bevel gear is fixed to the end of the inclined shaft, and the two longitudinally distributed bevel gears mesh and transmit power.

[0010] The two grinding strips rotate synchronously via a bevel gear. One of the grinding strips can be driven by an external motor, which simplifies the structure and enables the synchronous start and stop of the two grinding strips.

[0011] Furthermore, the spray assembly includes a crossbeam and a water sprayer. The crossbeam is fixed to the frame, the water sprayer is disposed on the crossbeam, and a water spray outlet is provided on one side of the water sprayer.

[0012] Water flows through the spray nozzles onto the upper surface of the steel plate, and then flows along the steel plate to both sides into the water storage tank. The water in the water storage tank is always in a fully overflowing state, so it can wet the lower surface of the steel plate.

[0013] Spraying water on the surface of the steel plate before grinding can reduce dust during the grinding and rust removal process, cool the grinding area, and prevent the grinding tool and workpiece from getting too hot. It can also reduce the possibility of the steel plate deforming due to the heat generated during grinding.

[0014] Preferably, the spray assembly further includes a water storage tank, which is fixed to the frame. The water sprayer and the water storage tank are located on the upper and lower sides of the steel plate, respectively, wherein the water storage tank is attached to the lower surface of the steel plate.

[0015] Furthermore, the roll forming assembly includes a roll support, a forming roller, and a synchronous gear. The roll support is mounted on the frame, the forming roller is rotatably mounted in the roll support, and the synchronous gear is fixed to the end of the forming roller. Two longitudinally distributed synchronous gears mesh and drive each other.

[0016] By using the rolling action of the forming rollers, the steel plate can be shaped, allowing the deformed steel plate to be rolled back into a straight shape.

[0017] Furthermore, the drying assembly includes a blower and inclined blades. The blower is fixed to the frame and has an air outlet. The array of inclined blades is located on the air outlet.

[0018] The blower can blow the rust water adhering to the surface of the steel plate to both sides to remove it, thereby removing most of the rust residue.

[0019] Furthermore, the roller conveying assembly includes a roller support, a roller shaft, and a rubber sleeve. The roller support is mounted on the frame, the roller shaft is rotatably mounted in the roller support, and the rubber sleeve is fixedly connected to the roller shaft.

[0020] Preferably, the roller conveying assembly further includes a timing sprocket, which is fixed to the end of the roller shaft, and the laterally adjacent timing sprockets are driven by a chain.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The tilting shaft rotating rust removal assembly is tilted slightly. The main body of the grinding strip is fixed with a hard rubber that can deform. A steel wire rope or steel wire curtain is set in the center of the hard rubber to avoid the grinding strip from being stretched.

[0022] (2) By designing the layered structure of the grinding strip, the grinding strip can naturally droop when stationary and tend to arch when rotating at high speed. This allows the outer sandpaper of the grinding strip to not only contact the surface of the steel plate, but also automatically match the contour fluctuation of the steel plate and ensure the rust removal effect.

[0023] (3) The two grinding strips rotate synchronously through a bevel gear. One of the grinding strips can be driven by an external motor, which simplifies the structure and enables the synchronous start and stop of the upper and lower grinding strips.

[0024] (4) Water flows through the spray nozzle onto the upper surface of the steel plate, and then flows along the steel plate to both sides into the water storage tank. The water in the water storage tank is always in a state of full overflow, so it can wet the lower surface of the steel plate.

[0025] (5) Spraying water on the surface of the steel plate before grinding can reduce dust during the grinding and rust removal process, cool down the grinding area, and prevent the temperature of the grinding tool and workpiece from getting too high. It can also reduce the possibility of deformation of the steel plate due to the temperature rise during grinding.

[0026] (6) The steel plate can be shaped by the rolling of the shaping roller, so that the steel plate that was originally deformed can be rolled back into a straight shape.

[0027] (7) The blower can blow the rust water adhering to the surface of the steel plate to both sides to remove it, thereby removing most of the rust residue. Attached Figure Description

[0028] Figure 1 This is a perspective view of a pretreatment line for steel plates proposed in this invention. Figure 2 This is a front view of a pretreatment line for steel plates proposed in this invention. Figure 3 This is a top view of a pretreatment line for steel plates proposed in this invention. Figure 4 for Figure 2 A cross-sectional view along section line AA; Figure 5 for Figure 4 A cross-sectional view along the cutting line BB; Figure 6 for Figure 4 A cross-sectional view along the section line CC; Figure 7 This is an exploded structural diagram of a pretreatment line for steel plates proposed in this invention. Figure 8 for Figure 5 A magnified view of a section at point I; Figure 9 for Figure 4 Enlarged view of a section at point II; Figure 10 for Figure 6 Enlarged view of a section at point III; Figure 11 for Figure 7 Enlarged view of a section at point IV; Figure 12 This is a schematic diagram of the trajectory of the grinding strip located below in different states.

[0029] The components include: 1. Rotary rust removal assembly; 2. Spraying assembly; 3. Roller forming assembly; 4. Drying assembly; 5. Roller conveyor assembly; 6. Frame; 7. Steel plate; 11. Inclined shaft; 12. Grinding strip; 13. Conical gear; 14. Rotary support; 15. Bearing; 21. Crossbeam; 22. Water sprayer; 23. Water storage tank; 31. Roller support; 32. Forming roller; 33. Synchronous gear; 41. Blower; 42. Inclined blade; 51. Roller support; 52. Roller shaft; 53. Rubber sleeve; 54. Synchronous sprocket; 221. Water spray nozzle; 411. Air outlet.

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] like Figures 1-11 As shown, the present invention proposes a pretreatment line for steel plate 7, including a rotary rust removal assembly 1, a spraying assembly 2, a roll forming assembly 3, a drying assembly 4, a roll conveying assembly 5, a frame 6, and a steel plate 7. The roll conveying assembly 5 is arrayed on the frame 6, and the steel plate 7 is placed on the roll conveying assembly 5. The rotary rust removal assembly 1, the drying assembly 4, and the roll forming assembly 3 are all arranged on the frame 6, and are symmetrically arranged on both sides of the steel plate 7. The spraying assembly 2 is arranged on the frame 6. The rotary rust removal assembly 1 includes an inclined shaft 11 and a grinding strip 12, with both ends of the grinding strip 12 fixedly connected to the inclined shaft 11.

[0034] The polishing strip 12 consists of a central hard rubber cylinder and an outer sandpaper, and the tilting shaft 11 has an tilt angle; When the grinding strip 12 is stationary, its center will droop. When the grinding strip 12 rotates, it will form an arch and adhere to the surface of the steel plate 7.

[0035] The tilting shaft 11 rotates the rust removal assembly 1 at a slight angle. The main body of the grinding strip 12 is fixed to a deformable hard rubber, and a steel wire rope or steel wire curtain is installed in the center of the hard rubber to prevent the grinding strip 12 from undergoing tensile deformation.

[0036] By designing the layered structure of the grinding strip 12, it is possible for the grinding strip 12 to hang naturally when stationary and to have an arched shape when rotating at high speed. This allows the outer layer of sandpaper of the grinding strip 12 to not only contact the surface of the steel plate 7, but also to automatically match the contour fluctuations of the steel plate 7 and ensure the rust removal effect.

[0037] The rotary rust removal assembly 1 also includes a bevel gear 13, a rotary support 14 and a bearing 15. The rotary support 14 is mounted on the frame 6 and the bearing 15 is located between the inclined shaft 11 and the rotary support 14. The bevel gear 13 is fixed to the end of the inclined shaft 11, and the two longitudinally distributed bevel gears 13 mesh and transmit power.

[0038] The two grinding strips 12 rotate synchronously through a bevel gear 13. One of the grinding strips 12 can be driven by an external motor, thereby simplifying the structure and enabling the synchronous start and stop of the upper and lower grinding strips 12.

[0039] The spray assembly 2 includes a crossbeam 21 and a water sprayer 22. The crossbeam 21 is fixed to the frame 6, and the water sprayer 22 is located on the crossbeam 21. A water spray outlet 221 is provided on one side of the water sprayer 22.

[0040] Water flows through the spray nozzle 221 onto the upper surface of the steel plate 7, and then flows along the steel plate 7 to both sides into the water storage tank 23. The water in the water storage tank 23 is always in a state of full overflow, so it can wet the lower surface of the steel plate 7.

[0041] Spraying water on the surface of steel plate 7 before grinding can reduce dust during the grinding and rust removal process, cool the grinding area, and prevent the grinding tool and workpiece from getting too hot. It can also reduce the possibility of steel plate 7 deforming due to the heat generated during grinding.

[0042] The spray assembly 2 also includes a water storage tank 23, which is fixed to the frame 6. The water sprayer 22 and the water storage tank 23 are located on the upper and lower sides of the steel plate 7, respectively, with the water storage tank 23 attached to the lower surface of the steel plate 7.

[0043] The roll forming assembly 3 includes a roll support 31, a forming roller 32, and a synchronous gear 33. The roll support 31 is mounted on the frame 6. The forming roller 32 is rotatably mounted in the roll support 31. The synchronous gear 33 is fixed to the end of the forming roller 32. The two longitudinally distributed synchronous gears 33 mesh and drive each other.

[0044] By rolling the forming roller 32, the steel plate 7 can be shaped, so that the steel plate 7 that was originally deformed can be rolled back into a straight shape.

[0045] The drying assembly 4 includes a blower 41 and inclined blades 42. The blower 41 is fixed to the frame 6 and has an air outlet 411. The inclined blades 42 are arranged in an array on the air outlet 411.

[0046] The roller conveyor assembly 5 includes a roller support 51, a roller shaft 52, and a rubber sleeve 53. The roller support 51 is mounted on the frame 6, the roller shaft 52 is rotatably mounted in the roller support 51, and the rubber sleeve 53 is fixedly connected to the roller shaft 52.

[0047] The roller conveyor assembly 5 also includes a synchronous sprocket 54, which is fixed to the end of the roller shaft 52, and the laterally adjacent synchronous sprockets 54 are driven by a chain.

[0048] like Figure 12 As shown, a, b, and c represent the trajectory diagrams of the grinding strip 12 located below in different states; where a represents the state when the grinding strip 12 is stationary (in an "M" shape), b represents the state when the inclined shaft 11 drives the grinding strip 12 to rotate at high speed (in an arch shape), and c represents the state when the grinding strip 12 abuts against the lower surface of the steel plate 7 (closely attached to the lower surface of the steel plate 7).

[0049] In practical use, the external motor drives the roller shaft 52 to rotate through the chain and synchronous sprocket 54. Each group of roller shafts 52 is synchronously driven by the synchronous sprocket 54 and chain. After the steel plate 7 is placed on the roller conveying assembly 5, the steel plate 7 will move towards the spraying assembly 2 under the drive of the roller conveying assembly 5. Water is supplied to the water sprayer 22 through an external pipe. The water in the water sprayer 22 will fall through the water spray outlet 221 and enter the water storage tank 23. When the water storage tank 23 is full, it will overflow (the overflowing water can enter the filtration and circulation system for reuse).

[0050] When the steel plate 7 arrives at the location of the spray assembly 2, the water falling from the spray nozzle 221 will first contact the upper surface of the steel plate 7, making it wet from dry. The rust itself has a porous structure, which can lock in more moisture. Since the water storage tank 23 is always full and overflowing, and is in close contact with the lower surface of the steel plate 7, the water in the water storage tank 23 can make it wet from dry (in a further improvement, a notch matching the width of the steel plate 7 can be made in the water storage tank 23, so that the water level in the water storage tank 23 is higher than the lower surface of the steel plate 7, thereby improving the wetting effect). The tilting shaft 11 is driven to rotate by an external motor. The grinding strip 12 is composed of a steel wire skeleton, a hard rubber body and an outer layer of sandpaper from the inside out. The steel wire skeleton prevents it from being stretched in length, the hard rubber body ensures that its hardness is moderate, and the outer layer of sandpaper contacts the steel plate 7 and performs grinding. When the tilting shaft 11 is stationary, the central area of ​​the grinding strip 12 naturally droops. At this time, the upper grinding strip 12 is arc-shaped, and the lower grinding strip 12 is "M"-shaped. When the tilting shaft 11 rotates at high speed, the grinding strip 12 will also rotate synchronously. At this time, the grinding strip 12 will change into an arc shape. However, since the grinding strip 12 is flexible, when the steel plate 7 pushes open the grinding strip 12 and enters between the two grinding strips 12, the grinding strip 12 will stick tightly to the upper and lower surfaces of the steel plate 7 and rotate, thereby removing the surface rust.

[0051] After the grinding and rust removal are completed, the rust water adheres to the surface of the steel plate 7. When the steel plate 7 reaches the blower 41, the airflow in the blower 41 is blown onto the steel plate 7 after being guided by the inclined blades 42, blowing the rust water to both sides, thereby removing the rust residue that was ground off the surface of the steel plate 7.

[0052] When the steel plate 7 arrives at the roll forming assembly 3, it can be transformed back into a flat state by the extrusion and shaping by the forming roller 32.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pretreatment line for steel plates, comprising roller conveyor assemblies (5), a frame (6), and steel plates (7), wherein the roller conveyor assemblies (5) are arrayed on the frame (6), and the steel plates (7) are placed on the roller conveyor assemblies (5), characterized in that: It also includes a rotary rust removal assembly (1), a spraying assembly (2), a roll forming assembly (3) and a drying assembly (4). The rotary rust removal assembly (1), the drying assembly (4) and the roll forming assembly (3) are all mounted on the frame (6). The rotary rust removal assembly (1), the drying assembly (4) and the roll forming assembly (3) are symmetrically mounted on both sides of the steel plate (7). The spray assembly (2) is mounted on the frame (6); The rotary rust removal assembly (1) includes an inclined shaft (11) and a grinding strip (12), with both ends of the grinding strip (12) fixedly connected to the inclined shaft (11); The grinding strip (12) consists of a central rubber cylinder and an outer sandpaper. A steel wire skeleton is provided in the center of the hard rubber. The tilting shaft (11) has an tilt angle. When the grinding strip (12) is stationary, the center will droop. When the grinding strip (12) rotates, it will form an arch and stick to the surface of the steel plate (7). The rotary rust removal assembly (1) also includes a bevel gear (13), a rotary support (14) and a bearing (15). The rotary support (14) is mounted on the frame (6), and the bearing (15) is located between the inclined shaft (11) and the rotary support (14). The bevel gear (13) is fixed to the end of the inclined shaft (11), and the two longitudinally distributed bevel gears (13) mesh and transmit power. The spray assembly (2) includes a crossbeam (21) and a water sprayer (22). The crossbeam (21) is fixed to the frame (6), and the water sprayer (22) is located on the crossbeam (21). A water spray outlet (221) is provided on one side of the water sprayer (22).

2. The pretreatment line for steel plates and steel products according to claim 1, characterized in that: The spray assembly (2) also includes a water storage tank (23), which is fixed to the frame (6). The water sprayer (22) and the water storage tank (23) are located on the upper and lower sides of the steel plate (7), respectively, wherein the water storage tank (23) is attached to the lower surface of the steel plate (7).

3. The pretreatment line for steel plates and steel products according to claim 2, characterized in that: The roll forming assembly (3) includes a roll support (31), a forming roller (32) and a synchronous gear (33). The roll support (31) is mounted on the frame (6). The forming roller (32) is rotatably mounted in the roll support (31). The synchronous gear (33) is fixed to the end of the forming roller (32). The two longitudinally distributed synchronous gears (33) mesh and drive each other.

4. The pretreatment line for steel plates and steel products according to claim 3, characterized in that: The drying assembly (4) includes a blower (41) and inclined blades (42). The blower (41) is fixed to the frame (6). The blower (41) is provided with an air outlet (411). The inclined blades (42) are arranged in an array on the air outlet (411).

5. The pretreatment line for steel plates and steel products according to claim 4, characterized in that: The roller conveying assembly (5) includes a roller support (51), a roller shaft (52) and a rubber sleeve (53). The roller support (51) is mounted on the frame (6), the roller shaft (52) is rotatably mounted in the roller support (51), and the rubber sleeve (53) is fixedly connected to the roller shaft (52).

6. The pretreatment line for steel plates and steel products according to claim 5, characterized in that: The roller conveyor assembly (5) also includes a synchronous sprocket (54), which is fixed to the end of the roller shaft (52), and the laterally adjacent synchronous sprockets (54) are driven by a chain.

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