A steel strip ultra-precision pressure regulation cold rolling production process

Abstract

The application discloses a kind of steel strip ultra-precision pressure regulation and control cold rolling production process, it is related to steel strip cold rolling technical field, to be able to solve the problem of steel strip head bending caused by steel strip rolling deviation or uneven rolling, by starting unwinding assembly so that steel strip reverses until steel strip head is detected by sensor, drive assembly starts driving steel strip roll automatic guiding assembly to present horizontal to arc-shaped moving track, and steel strip roll automatic guiding assembly is contacted with steel strip head when moving horizontally to end, with arc-shaped movement, steel strip head is reversely bent and inserted into steel strip roll automatic guiding assembly to carry out horizontal extrusion, unwinding assembly is positively rotated to carry out automatic steel strip feeding, the steps of optimizing steel strip automatic feeding and carding steel strip head, not only reduce manual operation, improve the working efficiency of multiple steel strip cold rolling, but also automatically keep the head part of steel strip in horizontal state, will not cause steel strip deviation or uneven rolling, improve the effect of whole steel strip cold rolling.

Description

Technical Field

[0001] This invention relates to the field of cold rolling technology for steel strip, and in particular to an ultra-precision pressure-controlled cold rolling production process for steel strip. Background Technology

[0002] Cold rolling with controlled pressure is an advanced manufacturing technology for steel strip. In the preparation stage, raw materials meeting chemical composition and mechanical property standards are carefully selected and their surfaces cleaned to remove impurities such as oil and rust. During rolling, the steel coils are initially loaded, and then the front section of the steel strip is sequentially fed onto the cold rolling equipment. An advanced pressure control system monitors the roll pressure in real time and automatically adjusts it based on changes in strip thickness and shape, ensuring precise and appropriate pressure control. This achieves ultra-precise control over the strip's thickness and shape. Simultaneously, the cooling system plays a crucial role, employing water or gas cooling to prevent overheating and ensure processing within a suitable temperature range. After rolling, the strip undergoes surface treatments such as pickling and polishing to improve surface quality.

[0003] CN117619911A discloses a cold rolling device for producing stainless steel strip. The feeding coil and the take-up coil rotate. Before the stainless steel strip is pressed by the cold rolling mechanism, the distance between the two pressure plates is adjusted by a height adjustment component so that the steel strip passes through the two pressure plates. The water supply component supplies water into the groove. The steel strip passes through the cold rolling mechanism for pressing. After pressing, the steel strip is heated by a cooling mechanism to avoid secondary deformation caused by high heat, which would affect the quality of the steel strip.

[0004] However, in the aforementioned prior art, when the steel strip is first fed into the cold rolling mechanism from the loading coil, the head of the steel strip is manually pulled out before being fed into the cold rolling mechanism. Because the steel strip is relatively hard, it is very difficult to bend it manually, and it is also difficult for the manual to bend the head of the steel strip to a horizontal state. As a result, the head is bent during cold rolling, which can easily lead to steel strip deviation or uneven rolling, affecting the cold rolling effect.

[0005] Therefore, a high-precision pressure-controlled cold rolling process for steel strip is needed. Summary of the Invention

[0006] In order to solve all or some of the above problems, the present invention aims to provide a steel strip ultra-precision pressure-controlled cold rolling production process, which can solve the problems of steel strip rolling deviation or uneven rolling caused by steel strip head bending.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a steel strip ultra-precision pressure-controlled cold rolling production process, characterized by comprising the following steps:

[0008] S1: The steel strip is conveyed to the uncoiling assembly of the uncoiler by a conveying device such as a moving rail or crane. The steel strip is then clamped and restricted by the anti-deviation assembly and auxiliary limiting assembly. The uncoiling assembly is then started to reverse the steel strip until the head of the steel strip is detected by the sensor.

[0009] S2: The drive assembly starts and drives the automatic guide assembly of the steel strip coil to present a horizontal to arc-shaped movement trajectory. When the automatic guide assembly of the steel strip coil moves horizontally to the end, it contacts the head of the steel strip. As it moves in an arc shape, it bends the head of the steel strip in the opposite direction and inserts it into the automatic guide assembly of the steel strip coil for horizontal compression. The uncoiling assembly rotates forward to automatically feed the steel strip.

[0010] S3: The steel strip conveyed from the uncoiler is connected by the intermediate roller bearing, and then the steel strip preferably passes through the front tension control mechanism. The front tension control mechanism transmits the steel strip to the middle of the rolling mechanism. According to the thickness requirements of the steel strip, the rolling mechanism is adjusted by the pressure adjustment mechanism. At the same time, the lubrication and cooling conveying mechanism sprays liquid to lubricate and cool the steel strip rolled by the rolling mechanism. The steel strip rolled by the rolling mechanism passes through the rear tension control mechanism again.

[0011] S4: The post-tension control mechanism then passes the steel strip through the thickness measuring mechanism to measure the thickness of the rolled steel strip;

[0012] S5: After passing through the thickness measuring mechanism, the steel strip is again connected and conveyed to the winding machine via the intermediate roller bearing to complete the cold rolling process of the steel strip.

[0013] The uncoiler includes a support plate and an uncoil assembly mounted on the support plate. An auxiliary limiting component is installed on the support plate located on the upper side of the uncoil assembly. A steel strip coil is sleeved on the uncoil assembly. A steel strip coil anti-deviation component is installed at the lower end of the support plate. The free end of the steel strip coil anti-deviation component is sleeved outside the free end of the uncoil assembly. A drive component is also installed on the support plate. An automatic steel strip coil guide component is installed at the drive end of the drive component. One side of the automatic steel strip coil guide component is slidably connected to the support plate. A sensor is installed on the side of the support plate near the uncoil assembly.

[0014] Furthermore, the unwinding assembly includes a servo motor and a center roller installed at the drive end of the servo motor. The support plate includes a vertical plate and a horizontal plate fixedly installed at the lower end of the vertical plate. The servo motor is fixedly installed at the center of the vertical plate. The auxiliary limiting assembly includes a servo motor and a rotating frame installed at the drive end of the servo motor. The rotating frame is U-shaped. A support column is fixedly installed at the end of the rotating frame away from the servo motor. A limiting roller is provided on the outer side of the support column.

[0015] The support column has multiple grooves, and a limiting component is installed on the support column located at one end of the groove. The limiting component rotates clockwise and hides inside the groove.

[0016] The steel strip anti-deviation assembly includes a servo motor three and a baffle installed on the drive end of the servo motor three. The servo motor three drives the baffle to rotate and the baffle is movably connected to the drive end of the servo motor three. A transmission block is installed on the drive end of the servo motor three located between the servo motor three and the baffle. A cylinder one is installed on the end of the transmission block away from the servo motor three. The drive end of the cylinder one is fixedly connected to the baffle.

[0017] Furthermore, the specific steps of S1 are as follows:

[0018] S11: The steel strip is conveyed to the outside of the center roller by the conveying equipment, and then the servo motor is started to rotate clockwise to align the upper end of the baffle with the center roller. Then the cylinder is started to drive the baffle to be sleeved on the outside of the center roller and to initially restrict the steel strip.

[0019] S12: Servo motor 2 drives the rotating frame to rotate counterclockwise, causing the limiting roller to press the steel strip and the pressing point to be located at the center directly above the steel strip. Then, servo motor 1 drives the center roller, causing the steel strip to rotate clockwise. At this time, the outermost steel strip drives the limiting roller to rotate counterclockwise. Because the outer sleeve is restricted by the support column, the limiting component cannot rotate. Because the limiting roller squeezes the steel strip, the outermost steel strip rotates counterclockwise. The head of the steel strip is detected by the sensor.

[0020] S13: The servo motor drives the center roller, which in turn causes the steel strip to rotate counterclockwise. At this time, the limiting roller causes the limiting component to rotate counterclockwise, which in turn causes the limiting component to rotate into the groove, allowing the limiting roller to rotate freely, thereby achieving the limitation of the steel strip at the beginning of the conveying process.

[0021] Furthermore, the limiting component includes a main movable column and a steel ball movably embedded in the upper end of the main movable column. The steel ball matches a circular groove opened on the inner side of the limiting roller. Multiple circular grooves are provided and arranged in a ring on the inner side of the limiting roller. A spring is fixedly installed at the lower end of the main movable column. An outer sleeve is fixedly installed at the lower end of the spring. Torsion springs are fixedly installed on both sides of the outer sleeve. One end of the torsion spring is fixedly connected to the support column.

[0022] Furthermore, in S12, when the friction between the steel strip and the limiting roller is too great, the steel ball will be squeezed and moved downward, thereby driving the main moving column to move downward, so that the steel ball enters the next circular groove from the original circular groove.

[0023] Furthermore, the drive assembly includes a second cylinder and a connecting block installed on the drive end of the second cylinder. A fixed column is provided at the upper end of the connecting block, and a movable column is movably provided on the inner side of the fixed column.

[0024] The automatic guide assembly for steel strip coils includes a rotating column rotatably mounted on one end of a push plate. A side plate is mounted on the upper end of the push plate, and multiple rolling columns are arranged on the inner side of the side plate. The rolling columns gradually approach the bottom of the push plate from the end closest to the steel strip coil to the end furthest from the steel strip coil, and the section of the rolling columns furthest from the steel strip coil is on the same horizontal line.

[0025] Furthermore, the specific steps of S2 are as follows:

[0026] S21: The uncoiling assembly causes the steel strip to reverse until the head of the steel strip is detected by the sensor. Then, the cylinder drives the connecting block to move, which in turn drives the fixed column to move the push plate. At the beginning, the rotating column on the push plate moves in the straight groove. Then the rotating column reaches the intersection of the straight groove and the arc groove.

[0027] S22: At this time, the upper side of one end of the push plate contacts the head of the steel strip, and then the rotating column moves in the arc groove. At this time, the movable column is driven to move upward, and the head of the steel strip begins to gradually enter between the rolling column and the push plate.

[0028] S23: At the beginning, in order to slowly level the steel strip, the distance between the rolling column and the push plate is relatively large. As it continues to move, under the constraint of the rolling column and the push plate, the steel strip is pressed from a bent state to a horizontal state. At the same time, after the push plate moves to the end;

[0029] S24: When the head of the steel strip is tangent to the steel strip coil, the steel strip coil is rotated in the opposite direction and the head of the steel strip is horizontally conveyed to the middle of the rolling mechanism for cold rolling.

[0030] Furthermore, the rotating column is movably connected to the straight groove and the arc-shaped groove opened on one side of the vertical plate, and the straight groove and the arc-shaped groove are connected.

[0031] Furthermore, a cylinder is installed at the upper end of the movable column, and sliding columns are fixedly installed on both sides of the cylinder. An extension groove is opened at the lower end of the push plate, and a guide groove is opened on the push plate located inside one end of the extension groove. The guide groove is slidably connected to the sliding column, and the cylinder is rotatably connected to the push plate.

[0032] Furthermore, in S24, as the cold rolling of the steel strip proceeds, the steel strip coil gradually becomes thinner. At this time, the drive assembly moves in the opposite direction. Since the steel strip coil is not horizontal with the push plate, it will drive the push plate to rotate. The push plate rotates around the rotating column as the axis, and drives the sliding column to move along the guide groove. The cylinder also rotates and moves downward, so that the push plate rotates and remains parallel to the steel strip, thus supporting the steel strip between the cold rolling mechanism and the steel strip coil.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] This invention proposes an ultra-precision pressure-controlled cold rolling process for steel strip. The steel strip is transported to the uncoiling assembly of the uncoiler via a moving track or crane. The steel strip is then clamped and restricted by an anti-deviation assembly and auxiliary limiting assembly. The uncoiling assembly is then activated, causing the steel strip to reverse until the strip head is detected by a sensor. The drive assembly then activates the automatic guide assembly, which moves from a horizontal to an arc-shaped trajectory. When the automatic guide assembly reaches its horizontal end, it contacts the strip head. As it moves in an arc, the strip head is bent in the opposite direction and inserted into the automatic guide assembly for horizontal compression. The uncoiling assembly then rotates forward for automatic steel strip feeding. This process optimizes the steps of automated steel strip feeding and strip head sorting, reducing manual operation and improving the efficiency of multi-coil cold rolling. Furthermore, it automatically maintains the strip head in a horizontal position, preventing strip deviation or uneven rolling and improving the overall cold rolling effect. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall cold rolling process of the ultra-precision pressure-controlled cold rolling production process for steel strip of the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of the uncoiled state of the steel strip ultra-precision pressure-controlled cold rolling production process of the present invention.

[0037] Figure 3 This is a three-dimensional structural diagram of the uncoiling state of the uncoiler in the ultra-precision pressure-controlled cold rolling process for steel strip of the present invention.

[0038] Figure 4 This is a three-dimensional structural diagram of the uncoiled state of the steel strip ultra-precision pressure-controlled cold rolling production process of the present invention.

[0039] Figure 5 This is a schematic diagram of the vertical plate structure of the ultra-precision pressure-controlled cold rolling process for steel strip of the present invention;

[0040] Figure 6 This is a schematic diagram of the three-dimensional structure of the support column and limiting roll in the ultra-precision pressure-controlled cold rolling process for steel strip of the present invention.

[0041] Figure 7 This invention relates to an ultra-precision pressure-controlled cold rolling process for steel strip. Figure 6 A magnified structural diagram at point A;

[0042] Figure 8 This is a three-dimensional structural diagram of the drive component and the automatic guide component for the ultra-precision pressure-controlled cold rolling process of steel strip according to the present invention.

[0043] Figure 9This is a schematic diagram of the planar structure of the drive assembly and the automatic guide assembly for the ultra-precision pressure-controlled cold rolling process of steel strip according to the present invention.

[0044] Figure 10 This is a schematic diagram of the three-dimensional structure of the sliding column and push plate in the ultra-precision pressure-controlled cold rolling production process of steel strip of the present invention.

[0045] In the picture:

[0046] 1. Support plate; 11. Vertical plate; 111. Straight groove; 112. Arc groove; 12. Horizontal plate; 2. Uncoiling assembly; 21. Servo motor one; 22. Center roller; 3. Auxiliary limiting assembly; 31. Servo motor two; 32. Rotating frame; 33. Support column; 331. Groove; 34. Limiting roller; 341. Circular groove; 35. Limiting assembly; 351. Main moving column; 352. Steel ball; 353. Spring one; 354. Outer tube; 355. Torsion spring; 4. Steel 41. Anti-deviation assembly for steel strip roll; 42. Servo motor 3; 43. Baffle; 44. Transmission block; 5. Cylinder 1; 6. Drive assembly; 51. Cylinder 2; 52. Connecting block; 53. Fixed column; 54. Movable column; 55. Cylinder; 56. Sliding column; 7. Automatic guide assembly for steel strip roll; 8. Push plate; 9. Slide groove; 10. Guide slide groove; 11. Extension groove; 12. Rotating column; 13. Side plate; 14. Rolling column; 15. Sensor; 16. Steel strip roll. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figure 1 As shown, a steel strip ultra-precision pressure-controlled cold rolling production process includes the following steps:

[0049] Step 1: As Figures 2-7 As shown, the steel strip is transported to the outside of the center roller 22 by a conveying device such as a moving track or crane. Then, the servo motor 41 is started to rotate clockwise so that the upper end of the baffle 42 corresponds to the center roller 22. Then, the cylinder 44 is started to drive the baffle 42 to fit on the outside of the center roller 22 and initially restrict the steel strip to prevent it from falling off or deviating from the center roller 22. The initial winding is fully automatic, which improves the winding efficiency.

[0050] Servo motor 21 drives the rotating frame 32 to rotate counterclockwise, causing the limiting roller 34 to press against the steel strip with the pressing point located directly above the center of the steel strip. Then, servo motor 21 drives the center roller 22, causing the steel strip to rotate clockwise. At this time, the outermost steel strip drives the limiting roller 34 to rotate counterclockwise. Because the outer sleeve 354 is restricted by the support column 33, the limiting component 35 cannot rotate. Due to the compression of the steel strip by the limiting roller 34, the outermost steel strip rotates counterclockwise, ensuring that the outermost steel strip does not spread out and is tightly fitted to the inner steel strip during the cold rolling process. This ensures that the steel strip remains taut throughout the unfolding process, preventing looseness that could cause the steel strip to wobble or wrinkle due to compression. This helps maintain the stability of the steel strip during cold rolling. To prevent the outer steel strip from being too tightly fitted and lacking room to move, which could increase the friction between the steel strip and the limiting roller 34 and damage the auxiliary limiting component 3, when the friction between the steel strip and the limiting roller 34 is too great, the steel ball 352 will be squeezed to move downwards, thereby driving the main moving column 351 to move downwards. This allows the steel ball 352 to move from the original groove 341 to the next groove 341, and so on, achieving a buffering and protective effect.

[0051] When the steel strip is conveyed by rotating counterclockwise, the servo motor 21 drives the center roller 22, which in turn causes the steel strip to rotate counterclockwise. At this time, the limiting roller 34 causes the limiting component 35 to rotate counterclockwise, which in turn causes the limiting component 35 to rotate into the groove 331, allowing the limiting roller 34 to rotate freely. This achieves the limitation of the steel strip at the beginning of the conveying process, ensuring the stability of the steel strip during conveying.

[0052] Step Two: As Figures 4-10 As shown, the uncoiling assembly 2 reverses the steel strip until the head of the steel strip is detected by the sensor 7. Then, the cylinder 2 51 drives the connecting block 52 to move, which in turn drives the fixed column 53 to move the push plate 61. Initially, the rotating column 62 on the push plate 61 moves within the straight groove 111. Then, the rotating column 62 reaches the intersection of the straight groove 111 and the arc groove 112. At this time, the upper side of one end of the push plate 61 contacts the head of the steel strip. Then, the rotating column 62 moves within the arc groove 112. At this time, the movable column 54 is driven to move upward, and the head of the steel strip begins to gradually enter between the rolling column 64 and the push plate 61. Initially, in order to slowly straighten the steel strip... The distance between the rolling column 64 and the pusher plate 61 is relatively large. As it continues to move, the steel strip is pressed from a bent state to a horizontal state under the constraint of the rolling column 64 and the pusher plate 61. At the same time, after the pusher plate 61 moves to the end, the head of the steel strip is tangent to the steel strip roll. At this time, the steel strip roll rotates in the opposite direction and the head of the steel strip is horizontally transported to the middle of the rolling mechanism for cold rolling. This optimizes the steps of automatic feeding and sorting of the steel strip head, which not only reduces manual operation and improves the working efficiency of cold rolling of multiple rolls of steel strip, but also automatically keeps the head part of the steel strip in a horizontal state, which will not cause the steel strip to deviate or roll unevenly, thus improving the effect of cold rolling of the whole roll of steel strip.

[0053] Furthermore, as the cold rolling of the steel strip progresses, the steel strip coil gradually becomes thinner. At this point, the drive assembly 5 needs to move in the opposite direction and pause intermittently. At this time, the steel strip coil and the push plate 61 are not horizontal, which will drive the push plate 61 to rotate. The push plate 61 rotates around the rotating column 62 as the axis, and drives the sliding column 56 to move along the guide groove 612. The cylinder 55 can also rotate and move downward, so that the push plate 61 rotates to keep parallel to the steel strip, supporting the steel strip between the cold rolling mechanism and the steel strip coil, avoiding the influence of the weight of this section of steel strip on the cold rolling of the steel strip, and ensuring the effect of cold rolling of the steel strip.

[0054] Step 3: The steel strip conveyed from the uncoiler is connected to the intermediate roller bearing, and then the steel strip preferably passes through the front tension control mechanism. The front tension control mechanism transmits the steel strip to the middle of the rolling mechanism. According to the thickness requirements of the steel strip, the pressure adjustment mechanism adjusts the rolling mechanism. At the same time, the lubrication and cooling conveying mechanism sprays liquid to lubricate and cool the steel strip rolled by the rolling mechanism. The steel strip rolled by the rolling mechanism passes through the rear tension control mechanism again.

[0055] Step 4: The tension control mechanism then passes the steel strip through the thickness measuring mechanism to measure the thickness of the rolled steel strip.

[0056] Step 5: After passing through the thickness measuring mechanism, the steel strip is again connected to the intermediate roller bearing and conveyed to the winding machine for winding, thus completing the cold rolling process of the steel strip.

[0057] It should be noted that, in the description of this application, the terms "length," "thickness," "inner," "outer," "axial," "radial," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0058] Furthermore, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A steel strip ultra-precision pressure-controlled cold rolling production process, characterized in that, Includes the following steps: S1: The steel strip is conveyed to the uncoiling assembly (2) of the uncoiler by the conveying equipment, and the steel strip is restricted and clamped by the steel strip anti-deviation assembly (4) and the auxiliary limiting assembly (3). Then the uncoiling assembly (2) is started to reverse the steel strip until the head of the steel strip is detected by the sensor (7). S2: The drive component (5) starts the automatic guide component (6) of the steel strip coil to present a horizontal to arc-shaped movement trajectory. When the automatic guide component (6) of the steel strip coil moves horizontally to the end, it contacts the head of the steel strip. As it moves in an arc shape, it bends the head of the steel strip in the opposite direction and inserts it into the automatic guide component (6) of the steel strip coil for horizontal compression. The uncoiling component (2) rotates in the forward direction to automatically feed the steel strip. S3: The steel strip conveyed from the uncoiler is connected by the intermediate roller bearing, and then the steel strip passes through the front tension control mechanism. The front tension control mechanism transmits the steel strip to the middle of the rolling mechanism. According to the thickness requirements of the steel strip, the pressure adjustment mechanism adjusts the rolling mechanism. At the same time, the lubrication and cooling conveying mechanism sprays liquid to lubricate and cool the steel strip rolled by the rolling mechanism. The steel strip rolled by the rolling mechanism passes through the rear tension control mechanism again. S4: The post-tension control mechanism then passes the steel strip through the thickness measuring mechanism to measure the thickness of the rolled steel strip; S5: After passing through the thickness measuring mechanism, the steel strip is again connected and conveyed to the winding machine via the intermediate roller bearing to complete the cold rolling process of the steel strip. The uncoiler includes a support plate (1) and an uncoil assembly (2) mounted on the support plate (1). An auxiliary limiting assembly (3) is installed on the support plate (1) located on the upper side of the uncoil assembly (2). A steel strip roll (8) is sleeved on the uncoil assembly (2). A steel strip roll anti-deviation assembly (4) is installed at the lower end of the support plate (1). The free end of the steel strip roll anti-deviation assembly (4) is sleeved on the outside of the free end of the uncoil assembly (2). A drive assembly (5) is also installed on the support plate (1). An automatic guide assembly (6) for the steel strip roll is installed at the drive end of the drive assembly (5). One side of the automatic guide assembly (6) for the steel strip roll is slidably connected to the support plate (1). A sensor (7) is installed on the side of the support plate (1) near the uncoil assembly (2). The unwinding assembly (2) includes a servo motor (21) and a center roller (22) installed at the drive end of the servo motor (21). The support plate (1) includes a vertical plate (11) and a horizontal plate (12) fixedly installed at the lower end of the vertical plate (11). The servo motor (21) is fixedly installed at the center of the vertical plate (11). The auxiliary limiting assembly (3) includes a servo motor (31) and a rotating frame (32) installed at the drive end of the servo motor (31). The rotating frame (32) is U-shaped. A support column (33) is fixedly installed at the end of the rotating frame (32) away from the servo motor (31). A limiting roller (34) is provided on the outside of the support column (33). The support column (33) has multiple grooves (331) and a limiting component (35) is installed on the support column (33) located at one end of the groove (331). The limiting component (35) rotates clockwise and hides inside the groove (331). The steel strip roll anti-deviation assembly (4) includes a servo motor three (41) and a baffle (42) installed on the drive end of the servo motor three (41). The servo motor three (41) drives the baffle (42) to rotate and the baffle (42) is movably connected to the drive end of the servo motor three (41). A transmission block (43) is installed on the drive end of the servo motor three (41) located between the servo motor three (41) and the baffle (42). A cylinder one (44) is installed on the end of the transmission block (43) away from the servo motor three (41). The drive end of the cylinder one (44) is fixedly connected to the baffle (42). The specific steps of S1 are as follows: S11: The steel strip is conveyed to the outside of the center roller (22) by the conveying equipment, and then the servo motor three (41) is started to rotate clockwise to align the upper end of the baffle (42) with the center roller (22), and then the cylinder one (44) is started to drive the baffle (42) to be sleeved on the outside of the center roller (22) and to initially restrict the steel strip; S12: Servo motor 2 (31) drives the rotating frame (32) to rotate counterclockwise, causing the limiting roller (34) to press the steel strip and the pressing point is located in the middle of the steel strip. Then servo motor 1 (21) drives the center roller (22) to rotate the steel strip clockwise. At this time, the outermost steel strip drives the limiting roller (34) to rotate counterclockwise. Since the outer sleeve (354) is restricted by the support column (33), the limiting component (35) cannot rotate. Since the limiting roller (34) squeezes the steel strip, the outermost steel strip rotates counterclockwise. The head of the steel strip is detected by the sensor (7). S13: Servo motor 1 (21) drives the center roller (22) to make the steel strip rotate counterclockwise. At this time, the limiting roller (34) causes the limiting component (35) to rotate counterclockwise, which in turn causes the limiting component (35) to rotate into the groove (331), allowing the limiting roller (34) to rotate freely, thereby achieving the limitation of the steel strip at the beginning of the conveying.

2. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 1, characterized in that, The limiting component (35) includes a main movable column (351) and a steel ball (352) movably embedded in the upper end of the main movable column (351). The steel ball (352) matches the circular groove (341) opened on the inner side of the limiting roller (34). Multiple circular grooves (341) are provided and arranged in a ring on the inner side of the limiting roller (34). A spring (353) is fixedly installed at the lower end of the main movable column (351). An outer sleeve (354) is fixedly installed at the lower end of the spring (353). Torsion springs (355) are fixedly installed on both sides of the outer sleeve (354). One end of the torsion spring (355) is fixedly connected to the support column (33).

3. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 2, characterized in that, In S12, when the friction between the steel strip and the limiting roller (34) is too great, the steel ball (352) will be squeezed and moved downward, thereby driving the main moving column (351) to move downward, so that the steel ball (352) enters the next round groove (341) from the original round groove (341).

4. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 1, characterized in that, The drive assembly (5) includes a second cylinder (51) and a connecting block (52) installed on the drive end of the second cylinder (51). A fixed column (53) is provided at the upper end of the connecting block (52), and a movable column (54) is movably provided on the inner side of the fixed column (53). The automatic guide assembly (6) for steel strip coils includes a rotating column (62) rotatably mounted on one end of a push plate (61). A side plate (63) is mounted on the upper end of the push plate (61). Multiple rolling columns (64) are arranged on the inner side of the side plate (63). The rolling columns (64) gradually approach the bottom of the push plate (61) from the end close to the steel strip coil (8) to the end away from the steel strip coil (8), and the section of the rolling column (64) away from the steel strip coil (8) is on the same horizontal line.

5. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 4, characterized in that, The specific steps of S2 are as follows: S21: The uncoiling assembly (2) causes the steel strip to reverse until the head of the steel strip is detected by the sensor (7). Then, the cylinder two (51) drives the connecting block (52) to move, which in turn drives the fixed column (53) to move the push plate (61). At the beginning, the rotating column (62) on the push plate (61) moves in the straight groove (111). Then the rotating column (62) reaches the intersection of the straight groove (111) and the arc groove (112). S22: At this time, the upper side of one end of the push plate (61) contacts the head of the steel strip, and then the rotating column (62) moves in the arc groove (112). At this time, the movable column (54) is driven to move upward, and the head of the steel strip begins to gradually enter between the rolling column (64) and the push plate (61). S23: At the beginning, in order to slowly level the steel strip, the distance between the rolling column (64) and the push plate (61) is large. As it continues to move, under the restriction of the rolling column (64) and the push plate (61), the steel strip is pressed from a bent state to a horizontal state. At the same time, after the push plate (61) moves to the end; S24: When the head of the steel strip is tangent to the steel strip coil, the steel strip coil is rotated in the opposite direction and the head of the steel strip is horizontally conveyed to the middle of the rolling mechanism for cold rolling.

6. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 5, characterized in that, The rotating column (62) is movably connected to the straight groove (111) and the arc groove (112) opened on one side of the vertical plate (11), and the straight groove (111) and the arc groove (112) are connected.

7. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 6, characterized in that, A cylinder (55) is installed at the upper end of the movable column (54), and sliding columns (56) are fixedly provided on both sides of the cylinder (55). An extension groove (613) is provided at the lower end of the push plate (61). A guide groove (612) is provided on the push plate (61) located inside one end of the extension groove (613). The guide groove (612) is slidably connected to the sliding column (56), and the cylinder (55) is rotatably connected to the push plate (61).

8. The ultra-precision pressure-controlled cold rolling process for steel strip as described in claim 7, characterized in that, In S24, as the cold rolling of the steel strip proceeds, the steel strip coil gradually becomes thinner. At this time, the drive assembly (5) moves in the opposite direction. The steel strip coil and the push plate (61) are not horizontal, which will drive the push plate (61) to rotate. At this time, the push plate (61) rotates around the rotating column (62) as the axis, and drives the sliding column (56) to move along the guide groove (612). The cylinder (55) also rotates and moves downward, so that the push plate (61) rotates and remains parallel to the steel strip, thus supporting the steel strip between the cold rolling mechanism and the steel strip coil.

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