Continuous withdrawal and straightening unit for stainless steel bright belt

Abstract

The utility model relates to a stainless steel bright belt continuous withdrawal and straightening unit which comprises a 1 # uncoiling machine, a 2 # uncoiling machine, a welding machine, edge digging shear equipment, a 1 # tension roller, an inlet loop, a 2 # tension roller, a withdrawal and straightening machine, cleaning equipment, drying equipment, a 3 # tension roller, an outlet loop, a 4 # tension roller, a surface inspection station, outlet shear equipment and a coiling machine, an outlet of the 1 # tension roller is connected with an inlet of the inlet loop, an outlet of the inlet loop is connected with an inlet of the 2 # tension roller, the 2 # tension roller is connected with the withdrawal and straightening machine, the withdrawal and straightening machine is connected with inlets of the cleaning equipment and the drying equipment, an outlet of the drying equipment is connected with an inlet of the 3 # tension roller, and an outlet of the 3 # tension roller is connected with an outlet of the 4 # tension roller. And an outlet of the No.3 tension roller is connected with an inlet of the outlet loop. According to the unit, the loops are arranged at the inlet and the outlet of the withdrawal and straightening machine, so that strip steel keeps continuous and stable operation in the withdrawal and straightening machine, and the product quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to stainless steel coil straightening device, especially a stainless steel bright strip continuous straightening unit. BACKGROUND

[0002] The stainless steel coil straightening device is a special equipment for stretching and straightening the stainless steel coil, and is widely used in the stainless steel production, processing and manufacturing fields, especially in the occasions requiring stretching, straightening and flattening of the stainless steel coil. Among them, the straightening machine is the key equipment for planar finishing of the strip steel. If the straightening machine is not operated properly or the equipment has problems, it may have some adverse effects on the strip steel during the processing of the strip steel.

[0003] For example, the straightening roll mark is one of the common defects of the strip steel after passing through the straightening machine. This defect appears as continuous narrow stripes on the surface of the strip steel and may gradually increase over time. The generation of the straightening roll mark is mainly due to the surface wear or insufficient hardness of the straightening roll, which leaves indentation on the surface of the strip steel during the straightening process. This indentation not only affects the appearance quality of the strip steel, but also may reduce its mechanical properties and corrosion resistance. In addition, there are scratches, elastic deformation, weld seam breakage, etc. At present, the maintenance and maintenance work of the straightening machine are mainly strengthened to ensure that it is in good working condition. At the same time, it is also necessary to reasonably set the parameters of the straightening machine.

[0004] However, to achieve efficient straightening of the strip steel, in addition to improving the straightening machine, other mechanisms in the system also need to be coordinated, otherwise, once the other equipment is shut down or overhauled, the strip steel cannot be timely transported, which will again produce strip steel defects and cannot be continuously and stably produced. SUMMARY

[0005] In view of the above problems, the utility model provides a stainless steel bright strip continuous straightening unit, which can be continuously produced, so as to improve the quality and production efficiency of the strip steel.

[0006] To solve the technical problem, the utility model adopts the following scheme:

[0007] A stainless steel bright strip continuous tension leveler unit, comprising a 1# uncoiler, a 2# uncoiler, a welding machine, a edge cutting and shearing device, a 1# tension roller, an inlet loop, a 2# tension roller, a tension leveler, a cleaning device, a drying device, a 3# tension roller, an outlet loop, a 4# tension roller, a surface inspection station, an outlet shearing device and a coiler, wherein the 1# uncoiler and the 2# uncoiler are connected to the inlet of the welding machine respectively, the outlet of the welding machine is connected to the inlet of the edge cutting and shearing device, the outlet of the edge cutting and shearing device is connected to the inlet of the 1# tension roller, the outlet of the 1# tension roller is connected to the inlet of the inlet loop, the outlet of the inlet loop is connected to the inlet of the 2# tension roller, the outlet of the 2# tension roller is connected to the inlet of the tension leveler, the outlet of the tension leveler is connected to the inlet of the cleaning device, the outlet of the cleaning device is connected to the inlet of the drying device, the outlet of the drying device is connected to the inlet of the 3# tension roller, the outlet of the 3# tension roller is connected to the inlet of the outlet loop, the outlet of the outlet loop is connected to the inlet of the 4# tension roller, the outlet of the 4# tension roller is connected to the inlet of the surface inspection station, the outlet of the surface inspection station is connected to the inlet of the outlet shearing device, the outlet of the outlet shearing device is connected to the inlet of the coiler.

[0008] Further, the inlet loop and the outlet loop are vertical loops.

[0009] Further, the distance between the top loop roller and the bottom fixed roller of the vertical loop is 8-15 meters, and both the top loop roller and the bottom fixed roller are connected to a transmission mechanism.

[0010] Further, the diameter of the loop roller is 800-1000 mm.

[0011] Further, the loop roller is a loop roller with a tungsten carbide layer on the surface or a loop roller with a polyurethane layer on the surface.

[0012] Further, the 2# tension roller and the 3# tension roller are 6-roller tension rollers with a tungsten carbide layer or a polyurethane layer on the surface, and the surface roughness Ra is greater than or equal to 3.0 μm.

[0013] Further, the tension leveler is a wet tension leveler, comprising a bending unit and a straightening unit, and the inlet and outlet of the bending unit and the inlet and outlet of the straightening unit are all provided with straightening liquid nozzles.

[0014] Further, the straightening liquid nozzles are connected to the outlet of a straightening liquid supply tank, and the bottom of the straightening liquid nozzles is hinged to the frame of the tension leveler.

[0015] Further, the frame of the tension leveler is provided with a straightening liquid collection groove at the bottom, the outlet of the straightening liquid collection groove is connected to the inlet of a filtering mechanism, and the outlet of the filtering mechanism is connected to the inlet of the straightening liquid supply tank.

[0016] Further, the entry tension roller and the exit tension roller of the straightening machine are 6-roller tension rollers, the rollers of the 6-roller tension rollers are connected with the transmission mechanism, the roller diameter is 1000mm-1500mm, and the surface roughness Ra is greater than or equal to 3.0μm.

[0017] By adopting the foregoing technical scheme, compared with the prior art, the present application sets the loop at the entry and the exit of the straightening machine, so that the strip steel can continuously and stably run in the straightening machine.

[0018] Further, the entry loop and the exit loop adopt the vertical loop form, and the number of the strip steel rollers can be reduced compared with the horizontal loop.

[0019] In addition, the machine set adopts the double-uncoiling machine and single-coiling machine or double-coiling machine form, the entry is provided with the lap joint resistance welding machine, the straightening machine adopts the wet straightening machine to improve the strip steel pattern, the cleaning device is arranged after the straightening machine to clean the strip steel surface straightening liquid, and the drying device is arranged to dry the strip steel.

[0020] In summary, the machine set can straighten the stainless steel product on the 2B or BA surface to improve the pattern and achieve better product quality. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the structure schematic view of the stainless steel bright strip continuous straightening machine set provided by the embodiment 1 of the present application; the figure mark and meaning are as follows: 1# uncoiler 1, 2# uncoiler 2, welding machine 3, edge cutting shearing equipment 4, 1# tension roller 5, entry loop 6, 2# tension roller 7, straightening machine 8, cleaning equipment 9, drying equipment 10, 3# tension roller 11, exit loop 12, 4# tension roller 13, surface inspection station 14, exit shearing equipment 15, coiling machine 16.

[0022] Figure 2 is the structure schematic view of the straightening machine provided by the embodiment of the present application; the figure mark and meaning are as follows: entry stabilizing roller 81, entry stabilizing roller 82, exit stabilizing roller 83.

[0023] Figure 3 is the structure schematic view of the 2# tension roller provided by the embodiment 2 of the present application;

[0024] Figure 4 is the structure schematic view of the 2# tension roller provided by the embodiment 3 of the present application. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely in connection with the drawings and specific embodiments. However, those skilled in the art will understand that the following described embodiments are only some of the embodiments of the present application, but not all the embodiments, and are only used to illustrate the present application, and should not be regarded as limiting the scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. The specific conditions not mentioned in the embodiments are carried out according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not marked with the manufacturer, which are all conventional products that can be purchased in the market.

[0026] In the description of the present application, it should be pointed out that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the device or element indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Example 1

[0029] Reference Figure 1The continuous bright stainless steel strip straightening and leveling unit comprises a 1# uncoiler 1, a 2# uncoiler 2, a welding machine 3, a trimming device 4, a 1# tension roller 5, an inlet loop 6, a 2# tension roller 7, a straightening and leveling machine 8, a cleaning device 9, a drying device 10, a 3# tension roller 11, an outlet loop 12, a 4# tension roller 13, a surface inspection station 14, an outlet trimming device 15 and a coiler 16, wherein the 1# uncoiler 1 and the 2# uncoiler 2 are connected to the inlet of the welding machine 3 respectively, the outlet of the welding machine 3 is connected to the inlet of the trimming device 4, the outlet of the trimming device 4 is connected to the inlet of the 1# tension roller 5, the outlet of the 1# tension roller 5 is connected to the inlet of the inlet loop 6, the outlet of the inlet loop 6 is connected to the inlet of the 2# tension roller 7, the outlet of the 2# tension roller 7 is connected to the inlet of the straightening and leveling machine 8, the outlet of the straightening and leveling machine 8 is connected to the inlet of the cleaning device 9, the outlet of the cleaning device 9 is connected to the inlet of the drying device 10, the outlet of the drying device 10 is connected to the inlet of the 3# tension roller 11, the outlet of the 3# tension roller 11 is connected to the inlet of the outlet loop 12, the outlet of the outlet loop 12 is connected to the inlet of the 4# tension roller 13, the outlet of the 4# tension roller 13 is connected to the inlet of the surface inspection station 14, the outlet of the surface inspection station 14 is connected to the inlet of the outlet trimming device 15, and the outlet of the outlet trimming device 15 is connected to the inlet of the coiler 16.

[0030] The operation mode of the continuous bright stainless steel strip straightening and leveling unit is described as follows.

[0031] A coil on a coil saddle is sent to the reel shaft of the 1# uncoiler 1 or the 2# uncoiler 2 by a coil loading truck for uncoiling operation. Two uncoilers are used in this embodiment for continuous production. The 1# uncoiler and the 2# uncoiler can alternately perform uncoiling operation. When one side is normally uncoiling, the other side can be loaded by a forklift or a crane, thereby saving the downtime for loading and enabling the production line to continuously and efficiently produce.

[0032] The strip head is sent to an inlet trimming device on the uncoiler, the defective part of the strip head is trimmed off, the strip head is sent to the welding machine 3 area by a feeding clamp roller, the welding machine 3 is a lap resistance welding machine, the welding seam area is trimmed by the trimming device 4 after welding, and a pre-processed strip steel is obtained.

[0033] The pre-processed strip steel is sent to the 1# tension roller 5, the tension of the strip steel is increased by the 1# tension roller 5, so that the strip steel can smoothly enter the inlet loop 6, and the strip steel can continuously and stably run in the straightening and leveling machine 8.

[0034] The inlet loop 6 and the outlet loop 12 in this embodiment are vertical loops, the distance between the top roller and the bottom fixed roller is controlled to be 8-15 meters. The top loop roller and the bottom fixed roller are both driven. The diameter of the loop roller is controlled to be 800-1000 mm, and the rotational inertia of the roller body is not more than 25 kg*m 2The loop roller surface is lined with polyurethane material, the surface is roughened, and the surface roughness is Ra≥3.0 μm, and the roughness skew index Rsk index is controlled within ±0.8. The loop set amount satisfies the operating time of 6 minutes at the inlet and outlet, the stop of the leveler is avoided as much as possible, and stable operation is ensured.

[0035] After the strip steel passes through the inlet loop 6, it enters the 2# tension roller 7, and after the strip steel passes through the 2# tension roller 7, it enters the leveler 8, as shown in FIG. 2. Figure 2 The leveler 8 is a wet type leveler, and the wet type leveler is used to improve the strip steel profile. Two-bend-one-straight mode or two-bend-two-straight mode can be used. Regardless of which mode is used, two steady rollers 81 and 82 are arranged at the inlet of the leveler 8, and one steady roller 83 is arranged at the outlet of the leveler 8. The steady rollers are all provided with transmission devices to ensure that the rotating speed of the steady rollers is consistent with the speed of the strip steel. The inlet and outlet of the bending unit of the leveler 8 and the inlet and outlet of the straightening unit are all provided with straightening liquid nozzles. The straightening liquid nozzles are arranged on the upper and lower surfaces of the strip steel, are connected with the outlet of a straightening liquid supply tank, and are connected with the frame of the leveler 8 in a hinged manner at the bottom of the nozzles, so that the spraying angle relative to the strip steel can be adjusted. The straightening liquid is a dilute acid solution.

[0036] In order to improve the utilization rate of the straightening liquid, a straightening liquid collecting groove is arranged at the bottom of the frame of the leveler 8. The outlet of the straightening liquid collecting groove is connected with the inlet of a filtering mechanism, and the outlet of the filtering mechanism is connected with the inlet of the straightening liquid supply tank.

[0037] The inlet tension roller and the outlet tension of the leveler 8 are in the form of 6-roller tension rollers, are all arranged horizontally, and the rollers are all driven. The diameter of the tension rollers is controlled within 1000 mm-1500 mm, so as to satisfy the production of stainless steel products with a thickness of 0.05 mm-3 mm. Scrapers are arranged on the roller bodies of the tension rollers, and are used to clean the roller surfaces regularly. The surface of the tension rollers is lined with tungsten carbide material, is roughened, and the surface roughness is Ra≥3.0 μm, and the roughness skew index Rsk is less than 0.

[0038] After the strip steel passes through the leveler 8, it passes through the cleaning device 9 and the drying device 10. The cleaning device 9 mainly uses hot water to clean the strip steel, so as to clean the straightening liquid brought by the leveler 8 and the surface of the incoming strip steel. The strip steel is squeezed by a squeezing roller, so that only a small amount of hot water or no hot water is left on the surface of the strip steel.

[0039] The drying device 10 uses air knives to blow the surface of the strip steel, so as to ensure the cleanliness of the surface of the strip steel.

[0040] After drying, the strip steel passes through the 3# tension roller 11 and enters the outlet loop 12. The outlet loop 12 is used to store the strip steel and buffer the outlet operation time, so as to ensure the continuous production of the unit when each large coil is divided into small coils. Meanwhile, the straightening machine stop roll mark caused by the stop of the machine is reduced.

[0041] After passing through the exit looper 12, the strip enters the No. 4 tension roller 13 to increase the tension again, in order to facilitate the subsequent winding operation. After the strip with tension is inspected by the surface inspection station 14, it enters the exit shearing equipment 15 for slitting, and the resulting stainless steel bright strip then enters the coiler 16 for winding.

[0042] The stainless steel bright strips processed by the above method have a smooth and flat surface with a surface flatness of ≤8%, a strong metallic luster, and can be produced continuously.

[0043] Example 2:

[0044] This embodiment is an improvement on embodiment 1, such as... Figure 3 As shown, tension roller #2 is a 6-roll tension roller containing tungsten carbide material, with a roughened surface and a surface roughness of Ra≥3.0μm and a roughness skew index Rsk<0.

[0045] Due to the tungsten carbide layer on its surface, this tension roll has excellent corrosion resistance and wear resistance, which can avoid wear caused by vibration when the strip enters the tension roll, as well as the phenomenon of relative sliding between the tension roll and the strip when the tension roll starts and stops suddenly, thereby improving the flatness of the strip surface.

[0046] To further improve the flatness of the strip surface, tension roller #3 11 also adopts the same structure as tension roller #2 7.

[0047] Example 3:

[0048] This embodiment is an improvement on embodiment 1, such as... Figure 4 As shown, tension roller #2 (7) is a 6-roll tension roller with a polyurethane-lined surface. The surface is roughened, and the surface roughness is Ra≥3.0μm. The roughness skew index Rsk is controlled within ±0.8. Tension roller #3 (11) also adopts the same structure as tension roller #2 (7).

[0049] Polyurethane material has high elasticity, which allows the tension roller to quickly return to its original shape when subjected to external forces, maintaining stable tension control. At the same time, polyurethane material has excellent wear resistance, effectively resisting wear and scratches, and extending the service life of the tension roller.

[0050] With the above improvements, the continuous straightening unit for stainless steel bright strips can maintain a stable production capacity of bright strips in high or low temperature environments, and is not prone to deformation or damage of bright strips, making it suitable for working environments under various temperature conditions.

[0051] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.

Claims

1. A continuous bright strip stainless steel leveler train characterized by: The device comprises a 1# uncoiler, a 2# uncoiler, a welding machine, a cutting and trimming device, a 1# tension roller, an inlet loop, a 2# tension roller, a tension leveler, a cleaning device, a drying device, a 3# tension roller, an outlet loop, a 4# tension roller, a surface inspection station, an outlet cutting device and a coiler, wherein the 1# uncoiler and the 2# uncoiler are connected to the inlet of the welding machine respectively, the outlet of the welding machine is connected to the inlet of the cutting and trimming device, the outlet of the cutting and trimming device is connected to the inlet of the 1# tension roller, the outlet of the 1# tension roller is connected to the inlet of the inlet loop, the outlet of the inlet loop is connected to the inlet of the 2# tension roller, the outlet of the 2# tension roller is connected to the inlet of the tension leveler, the outlet of the tension leveler is connected to the inlet of the cleaning device, the outlet of the cleaning device is connected to the inlet of the drying device, the outlet of the drying device is connected to the inlet of the 3# tension roller, the outlet of the 3# tension roller is connected to the inlet of the outlet loop, the outlet of the outlet loop is connected to the inlet of the 4# tension roller, the outlet of the 4# tension roller is connected to the inlet of the surface inspection station, the outlet of the surface inspection station is connected to the inlet of the outlet cutting device, and the outlet of the outlet cutting device is connected to the inlet of the coiler.

2. The continuous bright strip stainless steel leveler and temper mill train of claim 1 wherein: The inlet loop and the outlet loop are vertical loops.

3. The continuous bright strip stainless steel leveler and temper mill train of claim 2 wherein: The distance between the top loop roller and the bottom fixed roller of the vertical loop is 8-15 meters, and both the top loop roller and the bottom fixed roller are connected to a transmission mechanism.

4. The continuous bright strip stainless steel leveler and temper mill train of claim 3 wherein: The diameter of the loop roller is 800-1000 mm.

5. The continuous bright strip stainless steel leveler and temper mill train of claim 3 wherein: The loop roller is a loop roller with a tungsten carbide layer on the surface or a loop roller with a polyurethane layer on the surface.

6. A continuous bright strip stainless steel leveler train as claimed in any one of claims 1 to 5, characterized in that: The 2# tension roller and the 3# tension roller are 6-roller tension rollers with a tungsten carbide layer or a polyurethane layer on the surface, and the surface roughness Ra is greater than or equal to 3.0 μm.

7. The continuous bright strip stainless steel leveler train of any of claims 1-5, characterized in that: The tension leveler is a wet tension leveler, which comprises a bending unit and a straightening unit, and the inlet and outlet of the bending unit and the inlet and outlet of the straightening unit are provided with straightening liquid nozzles.

8. The continuous bright strip stainless steel mill straightening and leveling line of claim 7 wherein: The straightening liquid nozzle is connected to the outlet of a straightening liquid supply tank, and the bottom of the straightening liquid nozzle is hinged to the frame of the tension leveler.

9. The continuous bright strip stainless steel mill straightening and leveling line of claim 8 wherein: The frame of the tension leveler is provided with a straightening liquid collection groove at the bottom, the outlet of the straightening liquid collection groove is connected to the inlet of a filtering mechanism, and the outlet of the filtering mechanism is connected to the inlet of the straightening liquid supply tank.

10. The continuous bright strip stainless steel leveler and temper mill train of claim 7 wherein: The inlet tension roller and the outlet tension roller of the tension leveler are 6-roller tension rollers, the rollers of the 6-roller tension rollers are connected to transmission mechanisms, the diameter of the rollers is 1000-1500 mm, and the surface roughness Ra is greater than or equal to 3.0 μm.

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