A stretch bending straightening equipment for precision stainless steel strip machining

Abstract

The utility model discloses a kind of stretch bending straightening equipment for precision stainless steel strip material processing, it is related to steel processing technical field, including chassis, multistage straightening unit and gap adjustment unit;Multistage straightening unit contains import flow guide frame, large pressure roller, medium pressure roller, small pressure roller, traction roller and rubber convex strip, gap adjustment unit is installed at the intermediate position of equipment.The utility model can play multiple bending straightening effect to steel strip material, effectively improve the fine degree of steel strip material straightening, and the rotational speed of each group of roller body is monitored in real time by speed encoder, cooperate the communication between total controller and each sub-controller, the linear velocity of each group of roller body can be controlled Synchronous, guarantee the stable conveying of steel strip material;In addition, the spacing between the upper and lower two roller bodies of traction roller and each group of pressure roller can be adjusted synchronously, to adapt to steel strip material of different thickness.

Description

Technical Field

[0001] This utility model relates to the field of steel processing technology, specifically to a tension bending and straightening device for precision stainless steel strip processing. Background Technology

[0002] Precision stainless steel strip is an ultra-thin, high-precision metal strip with excellent corrosion resistance, mechanical properties, and dimensional accuracy. It is widely used in electronics, medical devices, aerospace, and other fields. During processing, the steel strip material often needs to be straightened. Through the combined action of stretching and bending, the surface deformations such as wavy edges, crooked edges, and sickle bends of the strip are corrected, restoring its flatness and straightness, and improving its mechanical properties. The prior art, as disclosed in patent announcement number CN212349944U, discloses a tension bending straightening device for precision stainless steel strip processing, comprising a base plate, two sets of side plates, two sets of mounting frames, multiple sets of bottom rollers, multiple sets of first gears, multiple sets of second gears, multiple sets of pressure roller devices, a gearbox, and a motor. The stainless steel strip to be straightened is inserted between the multiple sets of bottom rollers and the multiple sets of pressure roller devices. The multiple sets of pressure roller devices are synchronously adjusted to work in conjunction with the multiple sets of bottom rollers to press the strip tightly. Then, the motor is started, and under the transmission action of the gearbox and the transmission action between the multiple sets of first gears and the multiple sets of second gears, the multiple sets of bottom rollers rotate synchronously. Under the frictional force between the outer circumference of the multiple sets of bottom rollers and the stainless steel strip, the strip slowly moves to the right. Through the pressing action of the multiple sets of pressure roller devices and the multiple sets of bottom rollers, the stainless steel strip is straightened, improving the straightening effect of the stainless steel strip and enhancing its practicality. However, in the aforementioned equipment, the bottom roller and pressure roller used for straightening are arranged alternately, and the bottom roller cannot provide effective support, thus failing to ensure effective straightening. Furthermore, since all rollers have the same diameter, the straightening degree of each section can only reach a fixed level, which cannot further improve the precision of straightening. Moreover, the aforementioned equipment cannot adjust the distance between the pressure roller and the bottom roller, making it unsuitable for steel strip materials of different thicknesses. Therefore, we propose a tension bending straightening device for precision stainless steel strip processing. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a tension bending and straightening device for precision stainless steel strip processing. This device performs multiple bending and straightening functions on the steel strip material, effectively improving the precision of the straightening. Furthermore, by using a speed encoder to monitor the rotational speed of each group of rollers in real time, and coordinating communication between the main controller and each sub-controller, the device can control the linear speed of each group of rollers to be synchronized, ensuring stable conveying of the steel strip material. In addition, the spacing between the upper and lower rollers of the traction roller and each group of pressure rollers can be adjusted synchronously to accommodate steel strip materials of different thicknesses, effectively solving the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tension bending and straightening device for precision stainless steel strip processing, comprising a base frame, a multi-stage straightening unit, and a gap adjustment unit; Base frame: It is horizontally arranged and has a U-shaped structure on its sides. An upper plate is installed on both the front and rear sides of the upper end of the U-shaped base frame. Multi-stage straightening unit: includes an inlet guide frame, large pressure roller, medium pressure roller, small pressure roller, traction roller, and rubber convex strips. The inlet guide frame is fixedly connected to the right side of the base frame. The inlet guide frame consists of upper and lower parts, and the openings on the right side of both upper and lower parts are rounded. A set of traction rollers is rotatably connected to the left side of the base frame. This set of traction rollers consists of upper and lower roller bodies, and a ring of rubber convex strips is fixedly connected to the outer circumference of the roller bodies. In the middle position of the base frame, from right to left, there are one set each of large, medium, and small pressure rollers. Each set of pressure rollers also consists of upper and lower roller bodies, and the vertical spacing of each set of pressure rollers is equal. The tangents of the lower ends of the upper row of pressure rollers are on the same horizontal plane, and the tangents of the upper ends of the lower row of pressure rollers are on the same horizontal plane. Gap adjustment unit: installed in the middle position of the equipment.

[0005] The steel strip material to be processed is introduced into the inlet guide frame from the right side of the equipment and exited from the traction roller on the left side. The rounded corner structure at the right end of the inlet guide frame allows for better passage of the steel strip material. The traction roller provides traction and conveying for the steel strip material and helps straighten it by tautness. The rubber protrusions on the outside of the traction roller increase the friction between the roller and the steel strip material, ensuring a stable and reliable traction effect. The steel strip material drawn from the steel coil has a large degree of curvature and can be initially straightened when passing through the inlet guide frame. As it continues to be conveyed to the left, it passes through the large, medium, and small pressure rollers in sequence. Since the smaller the radius of the roller, the finer the flattening of the steel strip material, the flattening precision is gradually improved during the conveying process from right to left, thus enhancing the straightening effect of the steel strip material.

[0006] Furthermore, the multi-stage straightening unit also includes a motor set, a motor bracket, and rubber sleeves. A set of motor sets is installed on the front side of the base frame and upper plate, corresponding to the positions of the traction roller, large pressure roller, medium pressure roller, and small pressure roller, respectively. Each motor set includes two motors, one upper and one lower. A motor bracket is installed on the outside of each motor, and the motor bracket is fixedly connected to the front end of the base frame or upper plate. Rubber sleeves are tightly fitted onto the outside of the large, medium, and small pressure rollers. The motor bracket is used to fix the motors in each motor set. The motor sets provide the power required for the operation of each set of rollers. The rubber sleeves fitted on the outside of the middle pressure rollers can deform through compression, and this deformation allows the rubber sleeves (312) to create a larger flattening area on the steel strip material.

[0007] Furthermore, the multi-stage straightening unit also includes a main controller, sub-controllers, and speed encoders. The main controller is mounted above the traction roller, and its panel includes a display screen and control keys. A sub-controller is mounted above each of the large, medium, and small pressure rollers. A speed encoder is embedded near the edge of each of the traction rollers, large, medium, and small pressure rollers. Each speed encoder and sub-controller is bidirectionally electrically connected to the main controller. The speed encoders at each roller monitor the angular velocity of the traction roller and each group of pressure rollers in real time. Combined with the radius of each roller, the linear velocity of the roller surface can be calculated. The main controller, through communication with each sub-controller, can use the speed encoders to control the motors of each motor group to dynamically adjust their angular velocities, ensuring synchronized linear velocities of each group of rollers and guaranteeing stable conveying of the steel strip material. Furthermore, the gap adjustment unit includes movable guide columns, vertical sliding grooves, a support frame, a hydraulic cylinder, and a fixed bracket. The lower end of the upper plate is fixedly connected to a row of four movable guide columns. The lower ends of the movable guide columns are slidably connected to the interior of the front and rear sides of the base frame. A vertical sliding groove is provided in the middle section of the front and rear sides of the base frame. The support frame has a U-shaped structure, and its two ends are slidably connected to the vertical sliding grooves on both sides. The upper end of the U-shaped support frame is fixedly connected to the middle position of the lower side of the upper plate. A hydraulic cylinder is installed at the center position of the bottom of the base frame. The fixed bracket is locked on the outside of the hydraulic cylinder and fixedly connected to the upper base frame. The telescopic end of the hydraulic cylinder faces upward and is fixedly connected to the middle position of the lower end of the support frame. The movable guide column allows the upper plate to slide up and down, the vertical slide groove is used for the installation of the support frame, the hydraulic cylinder is used to push the support frame to move up and down, and then push the upper plate to move vertically, so as to realize the synchronous adjustment of the upper and lower spacing of each group of rollers to adapt to steel strip materials of different thicknesses, and the fixed bracket is used to fix the hydraulic cylinder.

[0008] Furthermore, the gap adjustment unit also includes a distance sensor and a display. A distance sensor is installed on the front right side of the base frame and the upper plate. The transceiver parts of the distance sensor are flush with the upper end of the base frame and the lower end of the upper plate, respectively. A display is installed at the front end of the base frame, near the distance sensor, and the distance sensor and display are bidirectionally electrically connected. The distance sensor monitors the distance change between the base frame and the upper plate and displays the data on the display, thus providing workers with data reference when adjusting the vertical gap of the rollers.

[0009] Furthermore, it also includes support columns and feet. The lower end of the base frame is fixedly connected to two rows of support columns, and the lower end of each row of support columns is fixedly connected to a circular foot. The support columns are used to support the entire equipment, and the feet at the bottom make the equipment more stable.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This precision stainless steel strip processing tension bending straightening equipment has the following advantages: 1. It provides multiple bending and straightening effects on the steel strip material, effectively improving the precision of the straightening. Furthermore, the speed encoder monitors the rotational speed of each roller group in real time, and the communication between the main controller and each sub-controller allows for synchronized control of the linear speed of each roller group, ensuring stable conveying of the steel strip material. The steel strip material drawn from the steel coil has a significant degree of bending and is initially straightened when passing through the inlet guide frame. As it continues to be conveyed to the left, it passes through the large, medium, and small pressure rollers in sequence. Because rollers with smaller radii provide more precise flattening of the steel strip material, the flattening precision is progressively improved during the right-to-left conveying process, enhancing the straightening effect. 2. The spacing between the upper and lower rollers of the traction roller and each group of pressure rollers can be adjusted synchronously to accommodate steel strip materials of different thicknesses: the movable guide column enables the upper plate to slide up and down, the vertical slide groove is used for the installation of the support frame, and the hydraulic cylinder is used to push the support frame to move up and down, thereby pushing the upper plate to move vertically, and finally realizing the synchronous adjustment of the upper and lower spacing of each group of rollers; 3. This utility model can perform multiple bending and straightening functions on steel strip materials, effectively improving the precision of steel strip material straightening. In addition, the speed encoder monitors the rotation speed of each group of rollers in real time. With the communication between the main controller and each sub-controller, the linear speed of each group of rollers can be controlled synchronously to ensure stable conveying of steel strip materials. Furthermore, the distance between the upper and lower rollers of the traction roller and each group of pressure rollers can be adjusted synchronously to accommodate steel strip materials of different thicknesses. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic diagram of the upper structure of this utility model; Figure 3 This is a cross-sectional view of the present invention. Figure 4 This is a longitudinal sectional view of the present invention.

[0012] In the diagram: 1. Base frame, 2. Upper plate, 3. Multi-stage straightening unit, 31. Inlet guide frame, 32. Large pressure roller, 33. Medium pressure roller, 34. Small pressure roller, 35. Traction roller, 36. Rubber convex strip, 37. Motor unit, 38. Motor bracket, 39. Main controller, 310. Sub-controller, 311. Speed ​​encoder, 312. Rubber sleeve, 4. Gap adjustment unit, 41. Movable guide column, 42. Vertical slide groove, 43. Support frame, 44. Hydraulic cylinder, 45. Fixed bracket, 46. Distance sensor, 47. Display, 5. Support column, 6. Foot. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-4 This embodiment provides a technical solution: a tension bending and straightening device for precision stainless steel strip processing, including a base frame 1, a multi-stage straightening unit 3 and a gap adjustment unit 4; Base frame 1: It is arranged horizontally and its side is U-shaped. An upper plate 2 is installed on both the front and rear sides of the upper end of the U-shaped base frame 1. Multi-stage straightening unit 3: includes an inlet guide frame 31, a large pressure roller 32, a medium pressure roller 33, a small pressure roller 34, a traction roller 35, and rubber convex strips 36. The inlet guide frame 31 is fixedly connected to the right side of the base frame 1. The inlet guide frame 31 consists of two parts, upper and lower, and the openings on the right side of both parts are rounded. A set of traction rollers 35 is rotatably connected to the left side of the base frame 1. This set of traction rollers 35 consists of two roller bodies, upper and lower, and a ring of rubber convex strips 36 is fixedly connected to the outer circumference of the roller bodies. From right to left, a set of large pressure rollers 32, medium pressure rollers 33, and small pressure rollers 34 are rotatably connected to the middle position of the base frame 1. Each set of pressure rollers also includes two roller bodies, upper and lower, and the vertical spacing of each set of pressure rollers is equal. The tangents of the lower ends of the upper row of pressure rollers are on the same horizontal plane, and the tangents of the upper ends of the lower row of pressure rollers are on the same horizontal plane. Gap adjustment unit 4: Installed in the middle position of the equipment.

[0015] The steel strip material to be processed is introduced into the inlet guide frame 31 from the right side of the equipment and led out from the traction roller 35 on the left side of the equipment. The rounded corner structure of the right end of the inlet guide frame 31 allows the steel strip material to pass through better. The traction roller 35 can traction and convey the steel strip material, and by straightening the steel strip material, it can help with the straightening process. The rubber convex strip 36 on the outside of the traction roller 35 can increase the friction between the roller and the steel strip material, ensuring a stable and reliable traction effect on the steel strip material. The steel strip material led out from the steel coil has a large degree of curvature, and it can be initially straightened when passing through the inlet guide frame 31. When continuing to be conveyed to the left, it passes through the large pressure roller 32, the medium pressure roller 33 and the small pressure roller 34 in sequence. Since the smaller the radius of the roller, the finer the flattening of the steel strip material, the fineness of flattening can be improved step by step during the conveying of the steel strip material from right to left, thus improving the straightening effect of the steel strip material.

[0016] The multi-stage straightening unit 3 also includes motor sets 37, motor brackets 38, and rubber sleeves 312. A set of motor sets 37 is installed on the front side of the base frame 1 and the upper plate 2, corresponding to the positions of the traction roller 35, large pressure roller 32, medium pressure roller 33, and small pressure roller 34, respectively. Each set of motor sets 37 includes two motors, one upper and one lower. Motor brackets 38 are installed on the outside of the motors and are fixedly connected to the front end of the base frame 1 or the upper plate 2. Rubber sleeves 312 are tightly fitted onto the outside of the large pressure roller 32, medium pressure roller 33, and small pressure roller 34. The motor brackets 38 are used to fix the motors in each set of motor sets 37. The motor sets 37 provide the power required for the operation of each set of rollers. The rubber sleeves 312 fitted on the outside of the middle sets of pressure rollers can deform through compression, and this deformation allows the rubber sleeves 312 to create a larger flattening area on the steel strip material.

[0017] The multi-stage straightening unit 3 also includes a main controller 39, sub-controllers 310, and speed encoders 311. The main controller 39 is mounted above the traction roller 35, and its panel includes a display screen and control keys. A sub-controller 310 is mounted above each of the large pressure roller 32, medium pressure roller 33, and small pressure roller 34. A speed encoder 311 is embedded near the edge of each of the rollers (traction roller 35, large pressure roller 32, medium pressure roller 33, and small pressure roller 34). Each speed encoder 311 and each sub-controller 310 is bidirectionally electrically connected to the main controller 39. The speed encoders 311 at each roller monitor the rotational speed of the traction roller 35 and the angular velocity of each group of pressure rollers in real time. Combined with the radius of each roller, the linear velocity of the roller surface can be calculated. The main controller 39, through communication with each sub-controller 310, can use the speed encoders 311 to control the motors of each motor group 37 to dynamically adjust their angular velocities, ensuring synchronization of the linear velocities of each group of rollers and guaranteeing stable conveying of the steel strip material. The gap adjustment unit 4 includes movable guide columns 41, vertical sliding grooves 42, support brackets 43, hydraulic cylinders 44, and fixed brackets 45. The lower end of the upper plate 2 is fixedly connected to a row of four movable guide columns 41. The lower ends of the movable guide columns 41 are slidably connected to the interior of the front and rear sides of the base frame 1. A vertical sliding groove 42 is opened in the middle section of the front and rear sides of the base frame 1. The support bracket 43 has a U-shaped structure, and its two ends are slidably connected to the vertical sliding grooves 42 on both sides. The upper end of the U-shaped support bracket 43 is fixedly connected to the middle position of the lower side of the upper plate 2. A hydraulic cylinder 44 is installed at the center position of the bottom of the base frame 1. The fixed bracket 45 is locked on the outside of the hydraulic cylinder 44 and fixedly connected to the upper base frame 1. The telescopic end of the hydraulic cylinder 44 faces upward and is fixedly connected to the middle position of the lower end of the support bracket 43. The movable guide post 41 enables the upper plate 2 to slide up and down. The vertical slide groove 42 is used for the installation of the support frame 43. The hydraulic cylinder 44 is used to push the support frame 43 to move up and down, thereby pushing the upper plate 2 to move vertically. Finally, the vertical spacing of each group of rollers is adjusted synchronously to adapt to steel strip materials of different thicknesses. The fixed bracket 45 is used to fix the hydraulic cylinder 44.

[0018] The gap adjustment unit 4 also includes a distance sensor 46 and a display 47. The distance sensor 46 is installed on the front right side of the base frame 1 and the upper plate 2. The transmitting and receiving parts of the distance sensor 46 are flush with the upper end of the base frame 1 and the lower end of the upper plate 2, respectively. A display 47 is installed at the front end of the base frame 1, near the distance sensor 46. The distance sensor 46 and the display 47 are bidirectionally electrically connected. The distance sensor 46 monitors the distance change between the base frame 1 and the upper plate 2 and displays the data on the display 47, thus providing data reference for workers when adjusting the vertical gap of the rollers.

[0019] It also includes support columns 5 and feet 6. The lower end of the base frame 1 is fixedly connected to two rows of support columns 5, and the lower end of each row of support columns 5 is fixedly connected to a circular foot 6. The support columns 5 are used to support the entire equipment, and the feet 6 at the bottom make the equipment more stable.

[0020] The working principle of the precision stainless steel strip processing tension bending straightening device provided by this utility model is as follows: This utility model plays a multiple bending and straightening role on the steel strip material, effectively improving the precision of the straightening of the steel strip material. Furthermore, the speed encoder 311 monitors the rotational speed of each group of rollers in real time. Combined with the communication between the main controller 39 and each sub-controller 310, the linear speed of each group of rollers can be synchronized, ensuring stable conveying of the steel strip material. The steel strip material to be processed is introduced into the inlet guide frame 31 from the right side of the device and led out from the traction roller 35 on the left side of the device. The rounded corner structure of the right end of the inlet guide frame 31 allows for better passage of the steel strip material. The traction roller 35 plays a role in traction and conveying the steel strip material, and by straightening the steel strip material, it helps in the straightening process. The rubber convex strip 36 on the outer side of the traction roller 35 increases the friction between the roller and the steel strip material, ensuring a stable and reliable traction effect on the steel strip material. The steel strip material led out from the steel coil has a large degree of bending. After passing through the inlet guide frame 31... At first, it can be initially straightened; as it continues to be conveyed to the left, it passes through the large pressure roller 32, the medium pressure roller 33, and the small pressure roller 34 in sequence. Since the smaller the radius of the roller, the finer the flattening of the steel strip material, the fineness of flattening can be improved step by step during the conveying of the steel strip material from right to left, thus improving the straightening effect of the steel strip material; the motor bracket 38 is used to fix the motors of each of the 37 motor groups. The motor group 37 provides the power required for the operation of each group of rollers. The rubber sleeve 312 fitted on the outside of each group of pressure rollers can... The compression deformation allows the rubber sleeve 312 to create a larger flattening area on the steel strip material. The speed encoder 311 at each roller monitors the rotation speed of the traction roller 35 and the angular velocity of each group of pressure rollers in real time. Combined with the radius of each roller, the linear velocity value of the roller surface can be obtained. The main controller 39 communicates with each sub-controller 310 and can use the speed encoder 311 to control the motors of each motor group 37 to dynamically adjust the angular velocity, ensuring the synchronization of the linear velocity of each group of rollers and ensuring stable conveying of the steel strip material. Furthermore, the traction roller 35 and the spacing between the upper and lower rollers of each group of pressure rollers can be adjusted synchronously to accommodate steel strip materials of different thicknesses. The movable guide column 41 allows the upper plate 2 to slide up and down. The vertical slide groove 42 is used for installing the support frame 43. The hydraulic cylinder 44 is used to push the support frame 43 up and down, thereby pushing the upper plate 2 to move vertically, ultimately achieving synchronous adjustment of the vertical spacing between each group of rollers to accommodate steel strip materials of different thicknesses. The fixed bracket 45 is used to fix the hydraulic cylinder 44. The distance sensor 46 is used to monitor the distance change between the base frame 1 and the upper plate 2, and displays it on the display 47, thus providing data reference for workers when adjusting the vertical spacing of the rollers. Additionally, the support column 5 supports the entire equipment, and the bottom feet 6 make the equipment more stable.

[0021] It is worth noting that in the above embodiments, each group of motors 37, speed encoder 311, and sub-controller 310 are bidirectionally electrically connected to the main controller 39, the distance sensor 46 is bidirectionally electrically connected to the display 47, and the input end of the hydraulic cylinder 44 is electrically connected to the output end of the external power supply through the main controller 39. The main controller 39 controls the operation of the sub-controller 310 and the hydraulic cylinder 44 using methods commonly used in the prior art, and the sub-controller 310 controls the operation of each motor group 37 using methods commonly used in the prior art. The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A stretch-bend-straightening apparatus for precision stainless steel strip processing, characterized by: It includes a base frame (1), a multi-stage straightening unit (3), and a gap adjustment unit (4); Base frame (1): It is set horizontally and its side is a U-shaped structure. A top plate (2) is installed on both the front and rear sides of the upper end of the U-shaped base frame (1). Multi-stage straightening unit (3): includes an inlet guide frame (31), a large pressure roller (32), a medium pressure roller (33), a small pressure roller (34), a traction roller (35), and a rubber convex strip (36). The inlet guide frame (31) is fixedly connected to the right side of the base frame (1). The inlet guide frame (31) consists of two parts, upper and lower, and the openings on the right side of both parts are rounded. A set of traction rollers (35) is rotatably connected to the left side of the base frame (1). The traction roller (35) consists of two roller bodies, and a ring of rubber convex strips (36) is fixedly connected to the outer circumference of the roller body. In the middle position inside the base frame (1), a large pressure roller (32), a medium pressure roller (33) and a small pressure roller (34) are connected in sequence from right to left. Each set of pressure rollers also contains two roller bodies, and the distance between the upper and lower parts of each set of pressure rollers is equal. The tangents of the lower end points of the upper row of pressure rollers are on the same horizontal plane, and the tangents of the upper end points of the lower row of pressure rollers are on the same horizontal plane. Gap adjustment unit (4): Installed in the middle position of the equipment.

2. The stretch bending straightening apparatus for precision stainless steel strip processing according to claim 1, characterized in that: The multi-stage straightening unit (3) also includes a motor set (37), a motor bracket (38), and a rubber sleeve (312). A set of motor sets (37) is installed on the front side of the base frame (1) and the upper plate (2), and at the positions corresponding to the traction roller (35), the large pressure roller (32), the medium pressure roller (33), and the small pressure roller (34). Each set of motor sets (37) includes two motors, one upper and one lower. A motor bracket (38) is installed on the outside of the motor. The motor bracket (38) is fixedly connected to the front end of the base frame (1) or the upper plate (2). A rubber sleeve (312) is tightly fitted on the outside of the large pressure roller (32), the medium pressure roller (33), and the small pressure roller (34).

3. The stretch bending straightening apparatus for precision stainless steel strip processing according to claim 1, characterized in that: The multi-stage straightening unit (3) also includes a main controller (39), sub-controllers (310) and speed encoders (311). The main controller (39) is installed above the traction roller (35). The main controller (39) has a display screen and control keys on its panel. A sub-controller (310) is installed above each of the large pressure roller (32), medium pressure roller (33) and small pressure roller (34). A speed encoder (311) is embedded in the inside of each of the traction roller (35), large pressure roller (32), medium pressure roller (33) and small pressure roller (34) near the edge. Each speed encoder (311) and each sub-controller (310) are bidirectionally electrically connected to the main controller (39).

4. The stretch leveler for precision stainless steel strip processing of claim 1, wherein: The gap adjustment unit (4) includes movable guide posts (41), vertical sliding grooves (42), support brackets (43), hydraulic cylinders (44), and fixed brackets (45). The lower end of the upper plate (2) is fixedly connected to a row of four movable guide posts (41). The lower end of the movable guide posts (41) is slidably connected to the interior of the front and rear sides of the base frame (1). The middle section of the front and rear sides of the base frame (1) is provided with a vertical sliding groove (42). The support bracket (43) is a U-shaped structure, and its two ends are slidably connected to the vertical sliding grooves (42) on both sides. The upper end of the U-shaped support bracket (43) is fixedly connected to the middle position of the lower side of the upper plate (2). A hydraulic cylinder (44) is installed at the center position of the bottom of the base frame (1). The fixed bracket (45) is placed on the outside of the hydraulic cylinder (44) and fixedly connected to the upper base frame (1). The telescopic end of the hydraulic cylinder (44) faces upward and is fixedly connected to the middle position of the lower end of the support bracket (43).

5. The stretch leveler apparatus for precision stainless steel strip processing according to claim 4, characterized in that: The gap adjustment unit (4) also includes a distance sensor (46) and a display (47). The distance sensor (46) is installed on the right side of the front end of the base frame (1) and the upper plate (2). The transmitting and receiving parts of the distance sensor (46) are flush with the upper end of the base frame (1) and the lower end of the upper plate (2), respectively. A display (47) is installed at the front end of the base frame (1) and near the distance sensor (46). The distance sensor (46) and the display (47) are connected in both directions.

6. The stretch leveler apparatus for precision stainless steel strip processing of claim 1, wherein: It also includes support columns (5) and feet (6). The lower end of the base frame (1) is fixedly connected to two rows of support columns (5), and the lower end of each row of support columns (5) is fixedly connected to a circular foot (6).

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