Strip steel bluing line

Abstract

The application relates to a strip steel bluing production line which comprises a feeding mechanism, a heating and cooling mechanism, a conveying mechanism and a discharging and winding mechanism which are sequentially connected, a cleaning mechanism is arranged between the feeding mechanism and the heating and cooling mechanism, the cleaning mechanism comprises a cleaning tank, a first guide roller is arranged at the inlet end of the cleaning tank, an oil scraping device is arranged at the outlet end of the cleaning tank, the heating and cooling mechanism is provided with two groups, namely a first heating and cooling mechanism and a second heating and cooling mechanism, a tension adjusting mechanism and a cooling and drying mechanism are arranged between the first heating and cooling mechanism and the second heating and cooling mechanism, the conveying mechanism comprises a base, a transmission conveying device for conveying the strip steel is arranged above the base, and an oiling device for smearing rust-proof oil on the surface of the strip steel is arranged at the inlet side of the transmission conveying device. The application has the effects of realizing automatic operation of strip steel bluing treatment and improving the efficiency and quality of strip steel bluing treatment.

Description

Technical Field

[0001] This application relates to the field of strip steel production equipment technology, and in particular to a strip steel bluing production line. Background Technology

[0002] Strip steel is a narrow and long steel plate produced by various steel rolling enterprises to meet the needs of different industrial sectors for the industrialized production of various metal or mechanical products.

[0003] Steel strip can be used to manufacture parts for various equipment. The production requirements for steel strip vary depending on the application. In some applications, the steel strip needs to have good rust resistance. Therefore, bluing treatment is required during the production of steel strip. Bluing is a material protection technology that involves heating the steel in air or immersing it directly in a concentrated oxidizing solution to produce an extremely thin oxide film on its surface. It is also known as blackening. After the above treatment, a dense oxide film is formed on the surface of the steel strip, which can effectively improve the rust resistance of the steel strip.

[0004] When performing bluing treatment on strip steel, the strip steel is generally hoisted to the loading position of the heating furnace, and then sent into the heating furnace for heating. After heating, the strip steel is cooled, and the bluing treatment is completed after cooling. However, if there are impurities on the surface of the strip steel during the bluing process, it will affect the quality of the bluing treatment. In addition, water cooling is generally used to cool the strip steel during the bluing process. After cooling, residual moisture on the strip steel will cause the strip steel to rust during storage, affecting the production quality of the strip steel. Summary of the Invention

[0005] In order to solve the problems of cumbersome operation process, low production efficiency and difficulty in guaranteeing production quality of existing strip bluing equipment, this application provides a strip bluing production line.

[0006] The strip bluing production line provided in this application adopts the following technical solution: A strip bluing production line includes a feeding mechanism, a heating and cooling mechanism, a conveying mechanism and a unloading and winding mechanism connected in sequence.

[0007] A cleaning mechanism is provided between the feeding mechanism and the heating and cooling mechanism. The cleaning mechanism includes a cleaning tank, a first guide roller is provided at the inlet end of the cleaning tank, an oil scraping device is provided at the outlet end, and a limiting roller for limiting the strip steel is provided in the middle of the cleaning tank.

[0008] The heating and cooling mechanism is provided in two sets, namely a first heating and cooling mechanism and a second heating and cooling mechanism. A tension adjustment mechanism and a cooling and drying mechanism are provided between the first heating and cooling mechanism and the second heating and cooling mechanism. The cooling and drying mechanism includes a wind box, and several evenly arranged air outlet pipes are connected to the top of the wind box.

[0009] The conveying mechanism includes a base, and a transmission conveying device for conveying strip steel is provided above the base. An oiling device for applying anti-rust oil to the surface of the strip steel is provided on the inlet side of the transmission conveying device.

[0010] By adopting the above technical solution, the strip steel coil is set in the feeding mechanism. The strip steel passes through the cleaning mechanism, the first heating and cooling mechanism, the cooling and drying mechanism, the tension adjustment mechanism, the conveying mechanism, and the unloading and winding mechanism in sequence. The cleaning mechanism cleans the strip steel. The cleaning tank is filled with cleaning oil. The strip steel enters the cleaning tank through the first guide roller and passes through the bottom of the limiting roller. The limiting roller limits the strip steel so that it is located inside the cleaning oil. The strip steel after passing through the cleaning oil enters the oil scraping device. The oil scraping device scrapes off the cleaning oil adhering to the surface of the strip steel. The first heating and cooling mechanism performs preliminary heating and cooling on the strip steel. The cooling and drying mechanism heats the strip steel while removing residual moisture to achieve drying. The tension adjustment mechanism is used to adjust the tension of the strip steel during the conveying process. The second heating and cooling mechanism further heats and cools the strip steel to improve the bluing effect. The conveying mechanism is used to apply power to the strip steel to make it move continuously in the production line.

[0011] Optionally, the feeding mechanism includes a rotatable feeding turntable. A reversing device and a first support and guide device are sequentially arranged on one side of the feeding turntable. The reversing device includes a first mounting base. Several vertical guide rollers are rotatably arranged on the side of the first mounting base near the feeding turntable, and a horizontal guide roller is rotatably arranged on the other side of the first mounting base.

[0012] By adopting the above technical solution, the strip steel coil is placed horizontally on the feeding turntable. One end of the strip steel passes between the two vertical guide rollers in the reversing device and then passes through the transmission of the horizontal guide roller. The reversing device changes the strip steel from the vertical direction to the horizontal direction. Then the strip steel enters the first support and guide device, which guides the strip steel and conveys it upward into the heating and cooling mechanism.

[0013] Optionally, the oil scraping device includes a first bracket fixedly mounted on both sides of one end of the cleaning tank, a pressure plate movably mounted between the two first brackets, a first adjusting screw rotatably connected to both ends of the pressure plate, the first adjusting screw being threadedly connected to the first bracket, and oil scraping plates that cooperate with each other mounted on the bottom surface of the pressure plate and on the cleaning tank.

[0014] By adopting the above technical solution, the cleaned strip steel passes between the pressure plate and the cleaning tank. The pressure plate is pressed down by rotating the adjusting screw. The pressure plate and the cleaning tank cooperate to press the strip steel. When the strip steel moves, the oil scraper on the pressure plate and the cleaning tank scrapes off the cleaning oil on the surface of the strip steel, thereby achieving the cleaning of the strip steel.

[0015] Optionally, the first heating and cooling mechanism includes a first mounting frame, a first heating furnace is disposed above the first mounting frame, a second support and guide device is disposed at the inlet end of the first heating furnace, a first cooling device is connected to the outlet end of the first heating furnace, and conveying rollers are disposed at both ends above the first heating furnace.

[0016] By adopting the above technical solution, the cleaned strip steel is guided and conveyed to the first heating furnace by the second support and guiding device. The first heating furnace performs preliminary heating on the strip steel. After heating, the strip steel enters the first cooling device for water cooling to achieve the preliminary bluing process of the strip steel. In some bluing processes, the strip steel only needs to be heated once. When heating once, the strip steel is directly conveyed to the second heating and cooling device by the conveying roller above the first heating furnace, thereby achieving one heating and meeting different production needs.

[0017] Optionally, the second support and guide device includes a fixed seat, a fixed plate is provided above the fixed seat, the two ends of the fixed plate are connected to the fixed seat through connecting rods, a movable plate is provided between the fixed seat and the fixed plate, the two ends of the movable plate are movably connected to the connecting rods, an adjusting screw is rotatably connected above the movable plate, the adjusting screw is threaded to the fixed plate, and a first felt layer is provided on the side surface of the movable plate opposite to the fixed seat.

[0018] By adopting the above technical solution, the strip steel passes between the fixed plate and the movable plate. The movable plate is driven to move downward by rotating the adjusting screw. The movable plate and the fixed plate clamp the strip steel, thereby guiding the strip steel when it moves. In addition, the first felt layer is set to prevent scratching the surface of the strip steel.

[0019] Optionally, the tension adjustment mechanism includes a second mounting base, on which two sets of clamping adjustment devices are provided. Each clamping adjustment device includes a lower pressure plate fixedly mounted on the second mounting base, an upper pressure plate movably mounted above the lower pressure plate, second brackets at both ends of the lower pressure plate, and clamping screws rotatably connected to both ends of the upper pressure plate. The clamping screws are threadedly connected to the second brackets.

[0020] By adopting the above technical solution, the strip steel passes between the upper and lower pressure plates in the two sets of clamping adjustment devices. The position of the upper pressure plate is adjusted by the clamping screw, thereby adjusting the clamping force between the upper and lower pressure plates, thus controlling the clamping force of the clamping adjustment device on the strip steel and adjusting the tension of the strip steel.

[0021] Optionally, the second heating and cooling mechanism includes a second mounting frame, with a second heating furnace and a second cooling device connected above the second mounting frame. A dewatering device is provided on one side of the outlet end of the second cooling device. The dewatering device consists of two parallel loading and unloading boxes with a gap between them. Several evenly arranged air outlets are opened on the opposite side surfaces of the two boxes.

[0022] By adopting the above technical solution, the strip steel is heated in the second heating furnace and then cooled by the second cooling device, which uses water cooling. After cooling, the strip steel enters between the two chambers of the dewatering device. High-pressure gas is sprayed from the air outlet on the surface of the chamber. Under the action of the high-pressure gas, the water on the surface of the strip steel is removed, thus achieving the dewatering and drying of the strip steel.

[0023] Optionally, the conveying mechanism includes a base, a transmission conveying device is provided above the base, an oiling device is provided on the inlet side of the transmission conveying device, and the transmission conveying device includes a lower transmission roller rotatably mounted on the base and an upper transmission roller mounted above the lower transmission roller via a lifting adjustment component.

[0024] By adopting the above technical solution, the upper and lower drive rollers in the conveying device are matched to convey the strip steel, and at the same time the strip steel enters the oiling device, which coats the surface of the strip steel with a layer of anti-rust oil.

[0025] Optionally, the oiling device includes a lower oil groove disposed on the base, a connecting seat disposed in the middle of the lower oil groove, an upper oil groove disposed above the lower oil groove, threaded connecting parts disposed at both ends of the upper oil groove, and second adjusting screws rotatably disposed at both ends of the connecting seat and threadedly connected to the threaded connecting parts. A sponge layer is disposed on the bottom surface of the upper oil groove and the upper surface of the connecting seat, and several through holes are opened on the bottom surface of the upper oil groove.

[0026] By adopting the above technical solution, the strip steel passes through the upper oil groove and the lower oil groove. The height between the upper oil groove and the lower oil groove can be adjusted by adjusting the screw, so that the connecting seat in the upper oil groove and the lower oil groove clamps the strip steel. The upper oil groove is filled with rust-preventive oil. A sponge layer is set on the bottom surface of the upper oil groove and the connecting seat. The strip steel is clamped through the sponge layer. The rust-preventive oil penetrates into the sponge layer through the through hole on the bottom surface of the upper oil groove. The strip steel passes through the sponge layer and the rust-preventive oil is coated on the surface of the strip steel. The excess rust-preventive oil is stored in the lower oil groove.

[0027] Optionally, the feeding and winding mechanism includes a winding device, a winding disc is rotatably arranged on one side of the winding device, and a second guide roller is arranged on the feeding side of the winding device. The second guide roller is fixedly installed by a guide roller mounting bracket.

[0028] By adopting the above technical solution, the blued strip is guided by the second guide roller into the winding reel on one side of the winding device, and the winding reel rotates at a constant speed to wind up the strip.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. This application provides a first heating and cooling mechanism and a second heating and cooling mechanism, which can perform two heating and cooling processes on the strip steel or use only one set of heating and cooling mechanisms to achieve one heating and cooling process. This is suitable for different bluing process requirements, expands the applicability of the bluing production line, and improves the efficiency of strip steel bluing.

[0031] 2. This application includes a cleaning mechanism, which uses a cleaning tank and an oil scraping device to clean the strip steel with cleaning oil, thereby preventing impurities attached to the strip steel from affecting the bluing effect of the strip steel and improving the production quality of the strip steel.

[0032] 3. This application integrates cleaning, heating, cooling, and drying processes on a single production line, realizing automated bluing treatment of strip steel and improving the efficiency and quality of strip steel bluing treatment. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a strip steel bluing production line according to an embodiment of this application.

[0034] Figure 2 This is a schematic diagram of the feeding mechanism of a strip steel bluing production line according to an embodiment of this application.

[0035] Figure 3 This is a schematic diagram of the cleaning mechanism structure of a strip steel bluing production line according to an embodiment of this application.

[0036] Figure 4 This is a schematic diagram of the first heating and cooling mechanism of a strip bluing production line according to an embodiment of this application.

[0037] Figure 5 This is a schematic diagram of the tension adjustment mechanism of a strip bluing production line according to an embodiment of this application.

[0038] Figure 6 This is a schematic diagram of the cooling and drying mechanism of a strip bluing production line according to an embodiment of this application.

[0039] Figure 7 This is a schematic diagram of the second heating and cooling mechanism of a strip bluing production line according to an embodiment of this application.

[0040] Figure 8 This is a schematic diagram of the conveying mechanism structure of a strip steel bluing production line according to an embodiment of this application.

[0041] Figure 9 This is a schematic diagram of the internal structure of the oiling device of a strip bluing production line according to an embodiment of this application.

[0042] Figure 10 This is a schematic diagram of the unloading and winding mechanism of a strip steel bluing production line according to an embodiment of this application.

[0043] Explanation of reference numerals in the attached drawings: 1. Feeding mechanism; 2. Cleaning mechanism; 3. First heating and cooling mechanism; 4. Tension adjustment mechanism; 5. Cooling and drying mechanism; 6. Second heating and cooling mechanism; 7. Conveying mechanism; 8. Unloading and winding mechanism; 9. First support and guiding device; 10. Reversing device; 11. Horizontal guide roller; 12. First mounting base; 13. Vertical guide roller; 14. Feeding turntable; 15. Oil scraping device; 16. Cleaning tank; 17. Support frame; 18. First guide roller; 19. Oil outlet; 20. Limiting roller; 21. First adjusting screw; 22. First bracket; 23. Pressure plate; 24. Oil scraper; 25. First mounting frame; 26. First cooling device; 27. Heating furnace; 28. Conveying roller; 29. ​​Second support and guiding device; 30. Adjusting screw; 31. Fixed plate; 32. Connecting rod; 33. Movable plate; 34. First felt layer; 35. Fixed base; 36. Tightening adjustment device; 37. Second mounting base; 38. Tightening screw; 39. Second bracket; 40. Upper pressure plate; 41. Second felt layer; 42. Lower pressure plate; 43. Air box; 44. Air outlet pipe; 45. Second mounting frame; 46. Water removal device; 47. Support roller; 48. Second cooling device; 49. Second heating furnace; 50. Base; 51. Transmission and conveying device; 52. Oiling device; 53. Screw; 54. Upper fixed plate; 55. Movable side plate; 56. Upper drive roller; 57. Spring; 58. Guide rod; 59. Fixed side plate; 60. Lower drive roller; 61. Threaded connection; 62. Upper oil groove; 63. Through hole; 64. Second adjusting screw; 65. Sponge layer; 66. Connecting seat; 67. Lower oil groove; 68. Winding device; 69. Winding reel; 70. Guide roller mounting bracket; 71. Second guide roller. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0045] This embodiment discloses a strip bluing production line.

[0046] Reference Figure 1 A strip steel bluing production line includes a feeding mechanism 1, a cleaning mechanism 2, a first heating and cooling mechanism 3, a second heating and cooling mechanism 6, a conveying mechanism 7, and a feeding and winding mechanism 8 connected in sequence. A tension adjustment mechanism 4 and a cooling and drying mechanism 5 are arranged in sequence between the first heating and cooling mechanism 3 and the second heating and cooling mechanism 6.

[0047] The strip steel coil is placed in the feeding mechanism 1, and is continuously fed through the feeding mechanism 1. The strip steel first passes through the cleaning mechanism 2 to remove impurities attached to the surface, and then enters the first heating and cooling mechanism 3. The first heating and cooling mechanism 3 preheats the strip steel, and then cools it. The cooled strip steel enters the tension adjusting mechanism 4, which adjusts the tension in the strip steel to prevent deformation. The cooling and drying mechanism 5 cools and dries the strip steel to remove the cooling water attached to the surface of the strip steel. Then the strip steel enters the second heating and cooling mechanism 6 to be heated to the temperature required for bluing treatment. The bluing treatment strip steel is then cooled, and the cooled strip steel enters the conveying mechanism 7, which is used to transport the strip steel so that the strip steel moves continuously in the production line. The unloading and winding mechanism 8 coils the bluing treatment strip steel for easy storage.

[0048] Reference Figure 2 The feeding mechanism 1 includes a feeding turntable 14 rotatably mounted on the ground. A reversing device 10 is provided on one side of the feeding turntable 14. The reversing device 10 includes a first mounting base 12. Multiple vertical guide rollers 13 are provided on the first mounting base 12 near the feeding turntable 14. A horizontal guide roller 11 is provided on one side of the vertical guide rollers 13. A first support guide device 9 is provided on the other side of the reversing device 10. The first support guide device 9 and the second support guide device 29 have the same structure but differ only in size.

[0049] The strip steel coil is placed horizontally on the feeding turntable 14. The strip steel is drawn out from one end of the coil and enters between the two vertical guide rollers 13 of the reversing device 10. Then, the strip steel is flipped to the horizontal under the action of gravity and then conveyed into the first support and guide device 9 through the horizontal guide roller 11. The first support and guide device 9 clamps the strip steel and guides the movement of the strip steel.

[0050] Reference Figure 3 The cleaning mechanism 2 includes a cleaning tank 16 with an inverted triangular bottom. A limiting roller 20 is provided in the middle of the cleaning tank 16. An oil drain port 19 is provided on the side of the cleaning tank 16. A first guide roller 18 is provided at one end of the cleaning tank 16 and is fixedly mounted by a bracket. An oil scraping device 15 is provided at the other end of the cleaning tank 16. The oil scraping device 15 includes a first bracket 22 fixedly mounted on both sides of one end of the cleaning tank 16. A pressure plate 23 is provided between the two first brackets 22 and moves up and down. A first adjusting screw 21 is rotatably connected to both ends of the pressure plate 23. The first adjusting screw 21 is threadedly connected to the first bracket 22. Oil scraping plates 24 that cooperate with each other are provided on the bottom surface of the pressure plate 23 and on the cleaning tank 16.

[0051] The strip steel enters the first guide roller 18 through the feeding mechanism 1. The first guide roller 18 guides the strip steel so that it enters the cleaning tank 16. The strip steel passes through the limiting roller 20 inside the cleaning tank 16 and is then pulled out from the other end of the cleaning tank 16. Under the limitation of the limiting roller 20, the strip steel is immersed in the cleaning oil inside the cleaning tank 16. As the strip steel continues to move, it enters the cleaning tank 16 for cleaning. After cleaning, the strip steel enters the oil scraping device 15. The pressure plate 23 in the oil scraping device 15 is pressed down by the first adjusting screw 21. The pressure plate 23 and the surface of the cleaning tank 16 press the strip steel together. An oil scraper 24 is provided between the pressure plate 23 and the cleaning tank 16. The oil scraper 24 is pressed against the surface of the strip steel by the pressure plate 23. As the strip steel continues to move, the oil scraper 24 scrapes off the cleaning oil and impurities on the surface of the strip steel. The scraped cleaning oil is then recycled back into the cleaning tank 16.

[0052] Reference Figure 4 The first heating and cooling mechanism 3 includes a first mounting frame 25, a first heating furnace 27 is arranged above the first mounting frame 25, a second support and guide device 29 is arranged at the inlet end of the first heating furnace 27, a first cooling device 26 is connected to the outlet end of the first heating furnace 27, and conveying rollers 28 are also arranged at both ends above the first heating furnace 27. The second support and guide device 29 includes a fixed seat 35, a fixed plate 31 is arranged above the fixed seat 35, the two ends of the fixed plate 31 are connected to the fixed seat 35 through connecting rods 32, a movable plate 33 is arranged between the fixed seat 35 and the fixed plate 31, the two ends of the movable plate 33 are movably connected to the connecting rods 32, an adjusting screw 30 is rotatably connected above the movable plate 33, the adjusting screw 30 is threadedly connected to the fixed plate 31, and a first felt layer 34 is arranged on the surface of the movable plate 33 opposite to the fixed seat 35.

[0053] When two heating processes are required, the strip first enters the first heating furnace 27 in the first heating and cooling mechanism 3 to preheat the strip. Then the strip enters the first cooling device 26 for cooling. When only one heating and cooling process is required, the strip is directly conveyed to the second heating and cooling mechanism 6 via the conveying roller 28 above the first heating and cooling mechanism 3 for heating and cooling. This allows the bluing production line to be applicable to different bluing processes.

[0054] Reference Figure 5 The tension adjustment mechanism 4 includes a second mounting base 37, on which two sets of clamping adjustment devices 36 are provided. Each clamping adjustment device 36 includes a lower pressure plate 42 fixedly mounted on the second mounting base 37, an upper pressure plate 40 movably mounted above the lower pressure plate 42, a second felt layer 41 between the lower pressure plate 42 and the upper pressure plate 40, second brackets 39 at both ends of the lower pressure plate 42, and clamping screws 38 rotatably connected to both ends of the upper pressure plate 40. The clamping screws 38 are threadedly connected to the second brackets 39.

[0055] When adjusting the tension, the clamping screw 38 is driven to rotate. The clamping screw 38 is threadedly connected to the second bracket 39. When the clamping screw 38 is rotated, it drives the upper pressure plate 40 to move up and down. By adjusting the position of the upper pressure plate 40, the clamping force of the upper pressure plate 40 on the strip is adjusted, thereby realizing the adjustment of the tension of the strip.

[0056] Reference Figure 6 The cooling and drying mechanism 5 includes a wind box 43, with several evenly arranged air outlet pipes 44 connected above the wind box 43, and an external air source connected to one side of the wind box 43.

[0057] The strip steel passes above the cooling and drying unit 5, and an external air source supplies gas into the air box 43. The gas is discharged through the air outlet pipe 44 on the air box 43. The high-pressure gas is used to cool and lower the temperature of the strip steel, and at the same time removes the residual moisture on the surface of the strip steel.

[0058] Reference Figure 7 The second heating and cooling mechanism 6 includes a second mounting frame 45. A second heating furnace 49 and a second cooling device 48 are connected and disposed above the second mounting frame 45. A dewatering device 46 is disposed on one side of the outlet end of the second cooling device 48. The dewatering device 46 consists of two parallel loading and unloading boxes with a gap between them. Several evenly arranged air outlets are opened on the opposite side surfaces of the two boxes. A support roller 47 is disposed between the dewatering device 46 and the second cooling device 48. Support brackets are provided at both ends of the support roller 47. The support roller 47 is bolted to the support brackets.

[0059] The strip steel enters the second heating furnace 49 and is heated to the temperature required for bluing treatment. Then it enters the second cooling device 48 for cooling. After cooling, the strip steel is supported by the support roller 47 and enters the dehydration device 46. The dehydration device 46 is connected to an external air source. High-pressure gas is discharged through the air outlet between the two chambers in the dehydration device 46. The high-pressure gas removes the moisture from the surface of the strip steel.

[0060] Reference Figure 8The conveying mechanism 7 includes a base 50, a transmission conveying device 51 is arranged above the base 50, an oiling device 52 is arranged on the inlet side of the transmission conveying device 51, the transmission conveying device 51 includes a lower transmission roller 60 rotatably arranged on the base 50, the lower transmission roller 60 is a rubber roller, the two ends of the lower transmission roller 60 are rotatably arranged on the base 50 through fixed side plates 59, an upper fixed plate 54 is arranged above the fixed side plates 59, the two ends of the upper fixed plate 54 are connected to the fixed side plates 59 through guide rods 58, an upper transmission roller 56 is arranged above the lower transmission roller 60, the upper transmission roller 56 is a metal roller, the two ends of the upper transmission roller 56 are rotatably connected to movable side plates 55, the movable side plates 55 are movably sleeved on the guide rods 58, a spring 57 is sleeved on the guide rods 58 between the movable side plates 55 and the fixed side plates 59, a screw 53 is rotatably connected above the movable side plates 55, the screw 53 passes through the upper fixed plate 54 and is threaded with a nut, and a drive mechanism for driving the rotation of the upper transmission roller 56 and the lower transmission roller 60 is also connected to one end of the upper transmission roller 56 and the lower transmission roller 60.

[0061] The strip enters between the upper drive roller 56 and the lower drive roller 60. The movable side plate 55 can be driven to move along the guide rod 58 by rotating the screw 53, thereby adjusting the distance between the upper drive roller 56 and the lower drive roller 60. The upper drive roller 56 and the lower drive roller 60 clamp the strip. Then the drive mechanism drives the upper drive roller 56 and the lower drive roller 60 to rotate, and the upper drive roller 56 and the lower drive roller 60 drive the strip to move at a constant speed.

[0062] Reference Figure 9 The oiling device 52 includes a lower oil trough 67 set on the base 50, a connecting seat 66 set in the middle of the lower oil trough 67, an upper oil trough 62 set above the lower oil trough 67, cylindrical and hollow threaded connecting parts 61 set at both ends of the upper oil trough 62, and second adjusting screws 64 rotatably set at both ends of the connecting seat 66 and threadedly connected to the threaded connecting parts 61. A sponge layer 65 is set on the bottom surface of the upper oil trough 62 and the upper surface of the connecting seat 66, and several through holes 63 are opened on the bottom surface of the upper oil trough 62.

[0063] The strip steel passes between the upper oil groove 62 and the lower oil groove 67 in the oiling device 52. The height of the upper oil groove 62 is adjusted by rotating the second adjusting screw 64, so that the upper oil groove 62 and the connecting seat 66 clamp the strip steel. Rust-preventive oil is injected into the upper oil groove 62. The rust-preventive oil enters the sponge layer 65 through the through hole 63 at the bottom of the upper oil groove 62. The sponge layer 65 coats the surface of the strip steel with rust-preventive oil. Excess rust-preventive oil flows downward into the lower oil groove 62 for storage and recycling.

[0064] Reference Figure 10The feeding and winding mechanism 8 includes a winding device 68, a winding disc 69 is rotatably provided on one side of the winding device 68, and a second guide roller 71 is provided on the feeding side of the winding device 68. The second guide roller 71 is fixedly installed by a guide roller mounting bracket 70.

[0065] After being bluing, the strip enters the feeding and winding mechanism 8. The strip is first guided by the second guide roller 71, and then enters the winding disc 69 on one side of the winding device 68. The winding device 68 drives the winding disc 69 to rotate at a constant speed to wind the strip. The second guide roller 71 is higher than the winding device 68 to facilitate the winding of the strip.

[0066] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A strip steel bluing production line, comprising a feeding mechanism (1), a heating and cooling mechanism, a conveying mechanism (7), and a feeding and winding mechanism (8) connected in sequence. Its features are, A cleaning mechanism (2) is provided between the feeding mechanism (1) and the heating and cooling mechanism. The cleaning mechanism (2) includes a cleaning tank (16). A first guide roller (18) is provided at the inlet end of the cleaning tank (16). An oil scraping device (15) is provided at the outlet end of the cleaning tank (16). A limiting roller (20) for limiting the strip steel is provided in the middle of the cleaning tank (16). The heating and cooling mechanism is provided in two sets, namely the first heating and cooling mechanism (3) and the second heating and cooling mechanism (6). A tension adjustment mechanism (4) and a cooling and drying mechanism (5) are provided between the first heating and cooling mechanism (3) and the second heating and cooling mechanism (6). The cooling and drying mechanism (5) includes a wind box (43), and several evenly arranged air outlet pipes (44) are connected above the wind box (43). The conveying mechanism (7) includes a base (50), and a transmission conveying device (51) for conveying strip steel is provided above the base (50). An oiling device (52) for applying anti-rust oil to the surface of the strip steel is provided on the inlet side of the transmission conveying device (51).

2. The strip bluing production line according to claim 1, characterized in that: The feeding mechanism (1) includes a rotating feeding turntable (14). A reversing device (10) and a first support and guide device (9) are sequentially arranged on one side of the feeding turntable (14). The reversing device (10) includes a first mounting base (12). Several vertical guide rollers (13) are rotatably arranged on the side of the first mounting base (12) near the feeding turntable (14), and a horizontal guide roller (11) is rotatably arranged on the other side of the first mounting base (12).

3. The strip bluing production line according to claim 1, characterized in that: The oil scraping device (15) includes a first bracket (22) fixedly installed on both sides of one end of the cleaning tank (16). A pressure plate (23) is movably installed between the two first brackets (22). A first adjusting screw (21) is rotatably connected to both ends of the pressure plate (23). The first adjusting screw (21) is threadedly connected to the first bracket (22). Oil scraping plates (24) that cooperate with each other are provided on the bottom surface of the pressure plate (23) and the cleaning tank (16).

4. The strip bluing production line according to claim 1, characterized in that: The first heating and cooling mechanism (3) includes a first mounting frame (25), a first heating furnace (27) is provided above the first mounting frame (25), a second support and guide device (29) is provided at the inlet end of the first heating furnace (27), a first cooling device (26) is connected to the outlet end of the first heating furnace (27), and conveying rollers (28) are also provided at both ends above the first heating furnace (27).

5. A strip bluing production line according to claim 4, characterized in that: The second support and guide device (29) includes a fixed seat (35), a fixed plate (31) is provided above the fixed seat (35), the two ends of the fixed plate (31) are connected to the fixed seat (35) through connecting rods (32), a movable plate (33) is provided between the fixed seat (35) and the fixed plate (31) for vertical movement, the two ends of the movable plate (33) are movably connected to the connecting rods (32), an adjusting screw (30) is rotatably connected above the movable plate (33), the adjusting screw (30) is threadedly connected to the fixed plate (31), and a first felt layer (34) is provided on the side surface of the movable plate (33) opposite to the fixed seat (35).

6. A strip bluing production line according to claim 1, characterized in that: The tension adjustment mechanism (4) includes a second mounting base (37), on which two sets of clamping adjustment devices (36) are provided. The clamping adjustment device (36) includes a lower pressure plate (42) fixedly mounted on the second mounting base (37), an upper pressure plate (40) movably mounted above the lower pressure plate (42), and second brackets (39) provided at both ends of the lower pressure plate (42). Clamping screws (38) are rotatably connected to both ends of the upper pressure plate (40), and the clamping screws (38) are threadedly connected to the second brackets (39).

7. A strip bluing production line according to claim 1, characterized in that: The second heating and cooling mechanism (6) includes a second mounting frame (45). A second heating furnace (49) and a second cooling device (48) are connected above the second mounting frame (45). A water removal device (46) is provided on one side of the outlet end of the second cooling device (48). The water removal device (46) is composed of two parallel loading and unloading boxes. A gap is provided between the two boxes. Several evenly arranged air outlets are opened on the opposite side surface of the two boxes.

8. A strip bluing production line according to claim 1, characterized in that: The conveying mechanism (7) includes a base (50), a transmission conveying device (51) is provided above the base (50), an oiling device (52) is provided on the inlet side of the transmission conveying device (51), and the transmission conveying device (51) includes a lower transmission roller (60) rotatably mounted on the base (50) and an upper transmission roller (56) mounted above the lower transmission roller (60) via a lifting adjustment assembly.

9. A strip bluing production line according to claim 8, characterized in that: The oiling device (52) includes a lower oil groove (67) provided on the base (50), a connecting seat (66) provided in the middle of the lower oil groove (67), an upper oil groove (62) provided above the lower oil groove (67), threaded connecting parts (61) provided at both ends of the upper oil groove (62), and second adjusting screws (64) rotatably provided at both ends of the connecting seat (66) and threadedly connected to the threaded connecting parts (61). A sponge layer (65) is provided on the bottom surface of the upper oil groove (62) and the upper surface of the connecting seat (66), and several through holes (63) are opened on the bottom surface of the upper oil groove (62).

10. A strip bluing production line according to claim 1, characterized in that: The feeding and winding mechanism (8) includes a winding device (68), a winding disc (69) is rotatably provided on one side of the winding device (68), and a second guide roller (71) is provided on the feeding side of the winding device (68). The two ends of the second guide roller (71) are fixedly installed by a guide roller mounting bracket (70).

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