Single-stand multi-roll mill asynchronous self-adaptive cold continuous rolling unit for oriented silicon steel thin strip and rolling method of single-stand multi-roll mill asynchronous self-adaptive cold continuous rolling unit

Abstract

The invention relates to the field of metal alloy material processing, in particular to a single-rack multi-roll mill asynchronous self-adaptive cold continuous rolling unit for oriented silicon steel thin strips and a rolling method of the single-rack multi-roll mill asynchronous self-adaptive cold continuous rolling unit, which comprises an inlet pinch roll, an outlet pinch roll, a rack, a screw-down device, a working roll, a loop tension roll, a main transmission system and a sectional process lubricating system, the two ends of the working roller are fixed on the rack through bearing seats; loop tension rollers are distributed on the two sides of the working roller and installed on the outer side of the machine frame. The inlet pinch roll and the outlet pinch roll are respectively arranged on the outer side of the loop tension roll; the working rollers comprise an upper driving roller, a lower driving roller and a plurality of middle driven rollers; the two driving rollers are driven by a main transmission system, loop tension rollers are arranged on one sides of the driven rollers, and loop tension on the two sides of every two adjacent driven rollers is arranged in a crossed mode. Multi-pass continuous rolling such as five-pass continuous rolling can be achieved in a single rack, larger rolling reduction can be achieved in one rolling process, the total rolling reduction rate can reach 80% or above, and the ultra-thin strip rolling production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of metal alloy material processing, and is particularly suitable for producing thin strips, and in particular to a single-frame multi-roller mill asynchronous self-adaptive cold rolling mill group for oriented silicon steel thin strips and a rolling method thereof. Background Art

[0002] With the rise of new manufacturing industries such as micro-manufacturing and micro-electromechanical systems, the market demand for ultra-thin silicon steel strips is urgent.

[0003] At present, most of the ultra-thin strips made of metal, alloy, and metal-based composite materials on the market are obtained through rolling production, and the production equipment mostly uses multi-roll mill reversible rolling and continuous rolling. Traditional multi-roll mills represented by the Sendzimir 20-roll mill use multiple passes of repeated rolling, resulting in low production efficiency and high cost of ultra-thin strips. The typical unit using continuous rolling production is a five-stand continuous rolling unit, which has large equipment investment, large floor space, complex structure, high production, operation, and maintenance costs. Due to the lack of asynchronous rolling function, the thinning capacity is low, which is not conducive to the formation of silicon steel surface texture.

[0004] Patent CN106944479A discloses a thin strip single-stand continuous rolling mill and implementation method, which has multiple working rolls of equal or unequal diameters, including active rolls and passive rolls, and implements multiple asynchronous rolling or asynchronous plus synchronous rolling by controlling the linear speed of the active roll. As the number of rolling passes increases, the linear speed of each roll increases in turn along the rolling direction. The last pass can be asynchronous rolling or synchronous rolling; when synchronous rolling is adopted, the roll diameters of the last two rolls are equal and the roll linear speeds are equal. It has multiple unequal working rolls, including active rolls and passive rolls, the large-diameter roll is the active roll, and the small-diameter roll is the passive roll. It implements multiple asynchronous rolling or asynchronous plus synchronous rolling by controlling the linear speed of the active roll. As the number of rolling passes increases, the linear speed of each roll increases in turn along the rolling direction. The last pass can be asynchronous rolling or synchronous rolling; when synchronous rolling is adopted, the roll diameters of the last two rolls are equal and the roll transmission speeds are equal. For conventional four-stand tandem rolling, five-stand tandem rolling, etc., the total reduction rate is greater than 70%, and the strip is extended three to four times, that is, the exit speed of the rolling mill is three to four times the entrance speed. However, this patent is a horizontal arrangement, and the two tension rollers need to extend underground, which is very inconvenient to operate; the three electric rollers must be arranged on both sides, and it is difficult to distinguish between the transmission side and the operating side, which is not only not conducive to operation, but also increases safety hazards; ③ The space of the loop tension roller is limited, and the reduction rate each time cannot be large, and reversible rolling is often required, with low operating speed and low production efficiency. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a single-stand multi-roller asynchronous adaptive cold rolling mill group and a rolling method for oriented silicon steel thin strips which can realize multi-pass continuous rolling and has stronger thinning ability.

[0006] The technical solution to achieve the purpose of the present invention is: an asynchronous adaptive cold rolling unit of a single-frame multi-roller mill for oriented silicon steel thin strip, comprising an inlet pinch roll, an outlet pinch roll, a frame, a press-down device, a working roll, a loop tension roll, a main transmission system, and a segmented process lubrication system, wherein both ends of the working roll are fixed to the frame through bearing seats; the loop tension roll is distributed on both sides of the working roll and installed on the outside of the frame; the inlet pinch roll and the outlet pinch roll are respectively installed on the outside of the loop tension roll; the working roll comprises an upper and lower active roll and a plurality of passive rolls in the middle; the two active rolls are driven by the main transmission system, a loop tension roll is arranged on one side of the passive roll, and the loop tension rolls on both sides of two adjacent passive rolls are arranged crosswise.

[0007] In the above technical solution, there are six working rolls, the centers of which are in a straight line, and from top to bottom they are the first working roll, the second working roll, the third working roll, the fourth working roll, the fifth working roll, and the sixth working roll; among them, the first working roll and the sixth working roll are active rolls, and the second working roll, the third working roll, the fourth working roll, and the fifth working roll are passive rolls; the diameters of the two active rolls are greater than the diameters of the four passive rolls.

[0008] In the above technical solution, the pressing device is a hydraulic cylinder, which is arranged above the first working roll bearing seat; a strong roll bending device is also provided on the outside of the first working roll bearing seat, including a strong roll bending seat and a strong roll bending cylinder, and the strong roll bending cylinder is fixed in the frame through the strong roll bending seat.

[0009] In the above technical solution, a roll gap adjustment device is provided below the sixth working roll bearing seat; and a hydraulic balancing device is provided on the passive roll bearing seats.

[0010] In the above technical solution, the loop tension roller is installed on a bracket, and the bracket is fixed on the outside of the frame; there are four loop tension rollers, which are cross-arranged on the outside of the second working roller, the third working roller, the fourth working roller, and the fifth working roller, and the loop tension roller is driven to move horizontally by a hydraulic cylinder with a servo system.

[0011] In the above technical solution, the first working roll and the sixth working roll are driven by a centralized main transmission system or two independent main transmission systems, and the main transmission system is arranged on the transmission side of the rolling mill.

[0012] In the above technical solution, the main transmission system includes an upper main transmission system and a lower main transmission system, the upper main transmission system drives the first working roll, the second working roll, and the third working roll, and the lower main transmission system drives the third working roll, the fourth working roll, and the fifth working roll.

[0013] In the above technical solution, a segmented process lubrication system is provided between the roll gaps of the two working rolls, and the segmented process lubrication system is provided below the strip at the roll gap entrance.

[0014] A rolling method of an asynchronous self-adaptive cold rolling mill group of a single-stand multi-roller rolling mill for oriented silicon steel thin strips comprises the following steps:

[0015] Step 1: The hydraulic cylinder is lifted, and the first to sixth working rollers are in the maximum roll gap position in turn under the action of hydraulic balance, and each loop tension roller shrinks to its own minimum position; first, the head of the steel strip to be rolled passes through the entrance pinch roller, and the entrance pinch roller conveys the head forward to the upper or lower end of the first working roller; if it reaches the upper end of the first working roller, then the head of the strip bypasses the first working roller and passes through the roll gap at the lower part of the first working roller, bypasses the first loop tension roller, and then passes through the roll gap formed by the second working roller and the third working roller, then bypasses the second loop tension roller, passes through the roll gap formed by the third working roller and the fourth working roller, continues to bypass the third loop tension roller, and then passes through the roll gap formed by the fourth working roller and the fifth working roller, continues to bypass the fourth loop tension roller, and then passes through the fifth working roller and the sixth working roller to form The belt is then passed through the roller gap of the first and second working rollers, bypassed the first looper tension roller, passed through the roller gap formed by the second and third working rollers, bypassed the second looper tension roller, passed through the roller gap formed by the third and fourth working rollers, continued to bypass the third looper tension roller, passed through the roller gap formed by the fourth and fifth working rollers, continued to bypass the fourth looper tension roller, passed through the roller gap formed by the fifth and sixth working rollers, passed through the outlet pinch rollers and entered the coiler, clamped the belt head and wound it around the drum for 2 to 3 turns, and completed the belt threading process;

[0016] Step 2: Start the uncoiler and coiler to establish tension for the entire unit;

[0017] Step 3: Start the hydraulic cylinder and the segmented process lubrication system, and start the main transmission system (7) at the same time. The strip outlet speed V 出 ≥3~5 times V 入 , the first loop tension roller is pushed outward to set a certain tension for the strip, completing the start-up and low-speed operation of the unit;

[0018] Step 4: Linkage speed increase, according to the difference between the strip outlet thickness and the target thickness, adjust the hydraulic cylinder pressure to make the strip outlet thickness consistent with the target thickness;

[0019] Step 5: According to the export plate shape, adjust the bending force of the strong bending roll device and the corresponding cooling section flow of the segmented process lubrication system to make the export plate shape of the strip consistent with the target plate shape.

[0020] In the above technical solution, the inlet speed of the strip at the first working roll is set to V 12 , the exit speed of the sixth working roll strip is set to V 61 The speeds of the upper and lower roll surfaces of the second to fifth working rolls are set to V 21 、V 22 、V 31 、V 32 、V 41 、V 42 、V 51 、V 52 , the working roll adaptive speed meets: V 61 ≥V 52 =V 51 ≥V 42 =V 41 ≥V 32 =V 31 ≥V 22 =V 21 ≥V 12 ; The speed of strip surface adaptation meets: V 61m ≥V 52m ≥V 51m ≥V 42m ≥V 41m ≥V 32m ≥V 31m ≥V 22m ≥V 21m ≥V 12m , to achieve alternating asynchronous rolling of the upper and lower surfaces of the strip.

[0021] After adopting the above technical solution, the present invention has the following positive effects:

[0022] 1. The present invention can realize multi-pass continuous rolling in a single frame, such as five-pass continuous rolling. A larger reduction can be achieved in one rolling process, and the total reduction rate can reach more than 80%, thereby improving the production efficiency of ultra-thin strip rolling; one frame can replace multiple frames, reducing the weight of the equipment, reducing investment and land occupation, and at the same time, the production, operation and maintenance costs are also reduced accordingly;

[0023] 2. The inlet and outlet speeds of the unit of the present invention are set, and the speeds of other rolls and the strip speed are adjusted according to the total rolling force, the reduction rate between each roll, and the tension of each set of looper tension roller device to achieve adaptive asynchronous continuous rolling;

[0024] 3. The present invention has a strong bending roll device and multiple sets of segmented process lubrication systems, and the plate shape control ability is better; and it adopts alternating asynchronous rolling of the upper and lower surfaces of the strip, which greatly reduces the rolling force, reduces the equipment load, reduces the equipment weight, and has significant energy-saving, emission-reduction and material-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0026] Figure 1 This is a schematic diagram of the relationship between the roll system, rolled product, and rolling passes in Example 1;

[0027] Figure 2 This is a schematic diagram of the relationship between the roll system, rolled product, and rolling passes in Example 2;

[0028] Figure 3 This is a schematic diagram of the arch and roller system structure of Example 1;

[0029] Figure 4 This is a schematic diagram of the arch and roller system structure of Example 2;

[0030] Figure 5 is a side view of the rolling mill;

[0031] Figure 6 It is the schematic diagram of hydraulic balance of rolling mill;

[0032] In the figure, 1, inlet pinch roller; 2, outlet pinch roller; 3, frame; 4, pressing device; 5, working roller; 5-1, first working roller; 5-2, second working roller; 5-3, third working roller; 5-4, fourth working roller; 5-5, fifth working roller; 5-6, sixth working roller; 6, loop tension roller; 6-1, first loop tension roller; 6-2, second loop tension roller; 6-3, third loop tension roller; 6-4, fourth loop tension roller; 7, main transmission system; 8, segmented process lubrication system; 9, bearing seat; 9-1, first working roller bearing seat; 9-2, passive roller bearing seat; 10, strong bending roller device; 10-1, strong bending roller seat; 10-2, strong bending roller cylinder; 11, steel belt. DETAILED DESCRIPTION

[0033] (Example 1)

[0034] See Figures 1 to 6The present invention has an asynchronous adaptive cold rolling mill unit of a single-frame multi-roller mill for oriented silicon steel thin strip, comprising an inlet pinch roll 1, an outlet pinch roll 2, a frame 3, a press-down device 4, a working roll 5, a loop tension roll 6, a main transmission system 7, and a segmented process lubrication system 8. Both ends of the working roll are fixed to the frame 3 through bearing seats 9; the loop tension roll 6 is distributed on both sides of the working roll 5 and installed on the outside of the frame 3; the inlet pinch roll 1 and the outlet pinch roll 2 are respectively installed on the outside of the loop tension roll 6; the working roll 5 comprises two upper and lower active rolls and a plurality of passive rolls in the middle; the two active rolls are driven by the main transmission system 7, a loop tension roll 6 is arranged on one side of the passive roll, and the loop tension rolls 6 on both sides of two adjacent passive rolls are arranged crosswise.

[0035] In this embodiment, there are six working rollers 5, and the centers of the six working rollers 5 are in a straight line, which are respectively the first working roller 5-1, the second working roller 5-2, the third working roller 5-3, the fourth working roller 5-4, the fifth working roller 5-5, and the sixth working roller 5-6 from top to bottom; among them, the first working roller 5-1 and the sixth working roller 5-6 are active rollers, and the second working roller 5-2, the third working roller 5-3, the fourth working roller 5-4, and the fifth working roller 5-5 are passive rollers; the diameter of the two active rollers is greater than that of the four passive rollers.

[0036] The pressing device 4 of the present invention is a hydraulic cylinder, which is arranged above the first working roll bearing seat 9-1; a strong bending roll device 10 is also arranged outside the first working roll bearing seat 9-1, including a strong bending roll seat 10-1 and a strong bending roll cylinder 10-2, and the strong bending roll cylinder 10-2 is fixed in the frame 3 through the strong bending roll seat 10-1. A roll gap adjustment device is arranged below the bearing seat of the sixth working roll 5-6; a hydraulic balancing device is arranged on the passive roll bearing seat 9-2. The loop tension roller 6 is installed on a bracket, and the bracket is fixed on the outside of the frame 3; there are four loop tension rollers 6, which are arranged crosswise on the outside of the second working roll 5-2, the third working roll 5-3, the fourth working roll 5-4, and the fifth working roll 5-5; the loop tension roller 6 is driven to move horizontally by a hydraulic cylinder with a servo system. The first working roll 5-1 and the sixth working roll 5-6 are driven by a centralized main transmission system 7 or two independent main transmission systems 7, and the main transmission system 7 is arranged on the transmission side of the rolling mill. The embodiment of the present invention has two main transmission systems 7, including an upper main transmission system 7-1 and a lower main transmission system 7-2, wherein the upper main transmission system 7-1 drives the first working roller 5-1, the second working roller 5-2, and the third working roller 5-1, and the lower main transmission system 7-2 drives the third working roller 5-3, the fourth working roller 5-4, and the fifth working roller 5-5.

[0037] A segmented process lubrication system 8 is provided between the roll gaps of the two working rolls 5, and the segmented process lubrication system 8 is provided below the strip at the roll gap entrance.

[0038] The rolling method of the single-stand multi-roller rolling mill asynchronous adaptive cold tandem rolling mill for oriented silicon steel thin strips comprises the following steps:

[0039] Step 1: The hydraulic cylinder is lifted, and the first working roll 5-1 to the sixth working roll 5-6 are in the maximum roll gap position in turn under the action of hydraulic balance, and each loop tension roll 6 is retracted to its own minimum position; first, the head of the steel strip 11 to be rolled passes through the entrance pinch roll 1, and the entrance pinch roll 1 conveys the head forward to the upper end or lower end of the first working roll 5-1; if it reaches the upper end of the first working roll 5-1, see Figure 1 (Example 1), then the belt head is passed around the first working roller 5-1 and through the roller gap at the bottom of the first working roller 5-1, around the first loop tension roller 6-1, and then through the roller gap formed by the second working roller 5-2 and the third working roller 5-3, and then around the second loop tension roller 6-2, through the roller gap formed by the third working roller 5-3 and the fourth working roller 5-4, continue to pass around the third loop tension roller 6-3, and then pass through the roller gap formed by the fourth working roller 5-4 and the fifth working roller 5-5, continue to pass around the fourth loop tension roller 6-5, and then pass through the roller gap formed by the fifth working roller 5-5 and the sixth working roller 5-6, and then wind out from the lower end of the sixth working roller 6-6, pass through the exit pinch roller 2 into the coiler, clamp the belt head and wrap it around the drum for 2 to 3 turns, and the belt threading process is completed;

[0040] If the entrance pinch roller 1 conveys the strip head forward to the lower end of the first working roller 5-1, see Figure 2 (Example 2), the belt passes through the roll gap between the first working roll 5-1 and the second working roll 5-2, bypasses the first looper tension roll 6-1, passes through the roll gap formed by the second working roll 5-2 and the third working roll 5-3, bypasses the second looper tension roll 6-2, passes through the roll gap formed by the third working roll 5-3 and the fourth working roll 5-4, continues to bypass the third looper tension roll 6-3, passes through the roll gap formed by the fourth working roll 5-4 and the fifth working roll 5-5, continues to bypass the fourth looper tension roll 6-4, passes through the roll gap formed by the fifth working roll 5-5 and the sixth working roll 5-6, passes through the exit pinch roll 2 and enters the coiler, clamps the belt head and winds it around the drum for 2 to 3 turns, and completes the belt threading process;

[0041] Step 2: Start the uncoiler and coiler to establish tension for the entire unit;

[0042] Step 3: Start the hydraulic cylinder and the segmented process lubrication system 8, and start the main transmission system (7) at the same time. The strip outlet speed V 出 ≥3~5 times V 入 , the first loop tension roller 6-1 is pushed outward to set a certain tension for the strip, completing the start-up and low-speed operation of the unit;

[0043] Step 4: Linkage speed increase, according to the difference between the strip outlet thickness and the target thickness, adjust the hydraulic cylinder pressure to make the strip outlet thickness consistent with the target thickness;

[0044] Step 5: According to the outlet plate shape, adjust the bending force of the strong bending roll device 10 and the corresponding cooling section flow of the segmented process lubrication system 8 to make the strip outlet plate shape consistent with the target plate shape.

[0045] The inlet speed of the strip at the first working roll 5-1 is set to V 12 , the exit speed of the strip of the sixth working roller 5-6 is set to V 61 The speeds of the upper and lower surfaces of the second working roll 5-2 to the fifth working roll 5-5 are set to V 21 、V 22 、V 31 、V 32 、V 41 、V 42 、V 51 、V 52 , the working roll adaptive speed meets: V 61 ≥V 52 =V 51 ≥V 42 =V 41 ≥V 32 =V 31 ≥V 22 =V 21 ≥V 12 ; The speed of strip surface adaptation meets: V 61m ≥V 52m ≥V 51m ≥V 42m ≥V 41m ≥V 32m ≥V 31m ≥V 22m ≥V 21m ≥V 12m , to achieve alternating asynchronous rolling of the upper and lower surfaces of the strip.

[0046] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An asynchronous self-adaptive cold rolling mill of a single-frame multi-roller mill for oriented silicon steel thin strip, comprising an inlet pinch roll (1), an outlet pinch roll (2), a frame (3), a press-down device (4), a working roll (5), a loop tension roll (6), a main transmission system (7), and a segmented process lubrication system (8), wherein both ends of the working roll are fixed to the frame (3) through a bearing seat (9); the loop tension roll (6) is distributed on both sides of the working roll (5) and installed on the outside of the frame (3); the inlet pinch roll (1) and the outlet pinch roll (2) are respectively installed on the outside of the loop tension roll (6); and the characteristics are: The working rolls (5) include two upper and lower active rolls and a plurality of passive rolls in the middle; the two active rolls are driven by a main transmission system (7), one side of the passive roll is provided with a loop tension roll (6), and the loop tension rolls (6) on both sides of two adjacent passive rolls are arranged crosswise.

2. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to claim 1, characterized in that: There are six working rollers (5), the centers of which are in a straight line, and they are respectively a first working roller (5-1), a second working roller (5-2), a third working roller (5-3), a fourth working roller (5-4), a fifth working roller (5-5), and a sixth working roller (5-6) from top to bottom; wherein the first working roller (5-1) and the sixth working roller (5-6) are active rollers, and the second working roller (5-2), the third working roller (5-3), the fourth working roller (5-4), and the fifth working roller (5-5) are passive rollers; and the diameters of the two active rollers are greater than the diameters of the four passive rollers.

3. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to claim 2, characterized in that: The pressing device (4) is a hydraulic cylinder, which is arranged above the first working roll bearing seat (9-1); a strong roll bending device (10) is also arranged on the outside of the first working roll bearing seat (9-1), comprising a strong roll bending seat (10-1) and a strong roll bending cylinder (10-2); the strong roll bending cylinder (10-2) is fixed in the frame (3) through the strong roll bending seat (10-1).

4. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to claim 2, characterized in that: A roll gap adjustment device is provided below the bearing seat of the sixth working roll (5-6); and a hydraulic balancing device is provided on the bearing seat (9-2) of the passive roll.

5. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to claim 2, characterized in that: The loop tension roller (6) is installed on a bracket, and the bracket is fixed on the outside of the frame (3); there are four loop tension rollers (6), which are cross-arranged on the outside of the second working roller (5-2), the third working roller (5-3), the fourth working roller (5-4), and the fifth working roller (5-5), and are driven to move horizontally by a hydraulic cylinder with a servo system.

6. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to claim 2, characterized in that: The first working roll (5-1) and the sixth working roll (5-6) are driven by a centralized main transmission system (7) or two independent main transmission systems (7), and the main transmission system (7) is arranged on the transmission side of the rolling mill.

7. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to claim 6, characterized in that: The main transmission system (7) comprises an upper main transmission system (7-1) and a lower main transmission system (7-2), wherein the upper main transmission system (7-1) drives a first working roll (5-1), a second working roll (5-2), and a third working roll (5-1), and the lower main transmission system (7-2) drives a third working roll (5-3), a fourth working roll (5-4), and a fifth working roll (5-5).

8. The single-stand multi-roller asynchronous self-adaptive cold rolling mill for oriented silicon steel thin strip according to any one of claims 1 to 7, characterized in that: A segmented process lubrication system (8) is provided between the roll gaps of the two working rolls (5), and the segmented process lubrication system (8) is provided below the strip at the roll gap entrance.

9. A rolling method for a single-stand multi-roller mill asynchronous adaptive cold rolling mill for oriented silicon steel thin strip, characterized in that: The steps include: Step 1: The hydraulic cylinder is lifted, and the first working roll (5-1) to the sixth working roll (5-6) are successively placed at the maximum roll gap position under the action of hydraulic balance, and each loop tension roll (6) is retracted to its own minimum position; first, the head of the steel strip (11) to be rolled passes through the entrance pinch roll (1), and the entrance pinch roll (1) conveys the head forward to the upper end or lower end of the first working roll (5-1); if it reaches the upper end of the first working roll (5-1), the head of the steel strip is then passed around the first working roll (5-1) and passed through the roll gap at the lower part of the first working roll (5-1) , bypass the first loop tension roller (6-1), then pass through the roll gap formed by the second working roller (5-2) and the third working roller (5-3), then bypass the second loop tension roller (6-2), pass through the roll gap formed by the third working roller (5-3) and the fourth working roller (5-4), continue to bypass the third loop tension roller (6-3), then pass through the roll gap formed by the fourth working roller (5-4) and the fifth working roller (5-5), continue to bypass the fourth loop tension roller (6-5), then pass through the fifth working roller (5-5) and the sixth working roller The strip is wound out from the lower end of the sixth working roller (6-6), passes through the outlet pinch roller (2) and enters the coiler, clamps the strip head and winds it around the reel for 2 to 3 turns, completing the strip threading process; if the inlet pinch roller (1) conveys the strip head forward to the lower end of the first working roller (5-1), it passes through the roller gap between the first working roller (5-1) and the second working roller (5-2), bypasses the first loop tension roller (6-1), and then passes through the roller gap formed by the second working roller (5-2) and the third working roller (5-3), and then bypasses The belt passes through the second loop tension roller (6-2), passes through the roller gap formed by the third working roller (5-3) and the fourth working roller (5-4), continues to bypass the third loop tension roller (6-3), passes through the roller gap formed by the fourth working roller (5-4) and the fifth working roller (5-5), continues to bypass the fourth loop tension roller (6-4), passes through the roller gap formed by the fifth working roller (5-5) and the sixth working roller (5-6), passes through the exit pinch roller (2) and enters the coiler, clamps the belt head and winds it on the drum for 2 to 3 turns, completing the belt threading process; Step 2: Start the uncoiler and coiler to establish tension for the entire unit; Step 3: Start the hydraulic cylinder and the segmented process lubrication system (8), and start the main transmission system (7) at the same time. The strip outlet speed V 出 ≥3~5 times V 入 , the first loop tension roller (6-1) is pushed outward to set a certain tension for the strip, completing the start-up and low-speed operation of the unit; Step 4: Linkage speed increase, according to the difference between the strip outlet thickness and the target thickness, adjust the hydraulic cylinder pressure to make the strip outlet thickness consistent with the target thickness; Step 5: According to the outlet shape, adjust the bending force of the strong bending device (10) and the corresponding cooling section flow of the segmented process lubrication system (8) to make the outlet shape of the strip consistent with the target shape.

10. The rolling method of the single-stand multi-roller mill asynchronous self-adaptive cold tandem rolling mill for oriented silicon steel thin strip according to claim 9, characterized in that: The inlet speed of the strip at the first working roll (5-1) is set to V 12 The exit speed of the strip of the sixth working roll (5-6) is set to V 61 The speeds of the upper and lower surfaces of the second working roll (5-2) to the fifth working roll (5-5) are set to V 21 、V 22 、V 31 、V 32 、V 41 、V 42 、V 51 、V 52 , the working roll adaptive speed meets: V 61 ≥V 52 =V 51 ≥V 42 =V 41 ≥V 32 =V 31 ≥V 22 =V 21 ≥V 12 ; The speed of strip surface adaptation meets: V 61m ≥V 52m ≥V 51m ≥V 42m ≥V 41m ≥V 32m ≥V 31m ≥V 22m ≥V 21m ≥V 12m , to achieve alternating asynchronous rolling of the upper and lower surfaces of the strip.

Images