A double-layer metal thin strip composite rolling process pre-arc limiting device and method

Abstract

The present application relates to metal thin strip composite rolling technical field, particularly to a kind of double-layer metal thin strip composite rolling process pre-arc limiting device and method, including the deviation correction mechanism for adjusting the position of cladding and substrate between cladding and substrate, deviation correction mechanism is fixedly connected with the lifting assembly for adjusting the height of deviation correction mechanism by support below, the calibration mechanism for adjusting the longitudinal and transverse position of lifting assembly is arranged below lifting assembly, and workbench is arranged below calibration mechanism;Deviation correction mechanism includes supporting plate, supporting plate is fixedly connected with the top surface of support, and the upper and lower sides of supporting plate are respectively provided with thin strip deviation correction assembly, and the top surface of the side of support away from supporting plate is fixedly connected with driving portion, and driving portion is drivingly connected with thin strip deviation correction assembly.The present application realizes the centring in double-layer metal thin strip composite rolling process, with the characteristics of safe and efficient, wide application range, suitable for composite metal thin strip of various sizes and various materials.

Description

Technical Field

[0001] This invention relates to the field of composite rolling technology for metal strips, and in particular to a pre-arc limiting device and method for composite rolling of double-layer metal strips. Background Technology

[0002] As aerospace, electronic information, rail transportation, and other related fields gradually move towards intelligence and miniaturization, the market size of microelectromechanical systems (MEMS) is increasing year by year, and the demand for micro components is also increasing accordingly. Therefore, higher requirements are placed on the comprehensive performance and diversity of thin metal materials, making the development of high-performance metal composite strips of great significance.

[0003] Composite strip fabrication is a crucial step in promoting product miniaturization and accelerating product intelligence. However, during the composite rolling process of double-layer metal strips, uneven distribution of rolling stress between the rolls and the strip along the transverse direction can lead to misalignment and displacement of the base and cladding metal strips. This can result in edge cracks, bending of the composite strip along the rolling direction, and even failure of the two metals to bond together. All of these issues significantly impact the product quality and fabrication efficiency of the composite strip. Therefore, there is an urgent need for a pre-process arc-limiting device and method for composite rolling of double-layer metal strips to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a pre-arc limiting device and method for the composite rolling process of double-layer metal strip, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: a pre-arc limiting device for a double-layer metal strip composite rolling process, comprising a correction mechanism disposed between the cladding layer and the base layer for adjusting the position of the cladding layer and the base layer, a lifting component for adjusting the height of the correction mechanism being fixedly connected to the lower part of the correction mechanism via a bracket, a calibration mechanism for adjusting the longitudinal and transverse positions of the lifting component being disposed below the lifting component, and a worktable being disposed below the calibration mechanism; the correction mechanism includes a support plate, the support plate being fixedly connected to the top surface of the bracket, strip correction components being disposed on the upper and lower sides of the support plate respectively, and a driving part being fixedly connected to the top surface of the bracket on the side away from the support plate, the driving part being drively connected to the strip correction components.

[0006] Preferably, the thin strip correction assembly includes a support plate fixedly connected to the support plate, a rectangular portion rotatably connected to one end of the support plate away from the drive unit, a sliding portion provided on the support plate, the sliding portion including symmetrically arranged bearing seats, two bearing seats fixedly connected to the support plate, a ball screw rotatably connected between the two bearing seats, a slider threadedly connected to the ball screw, and the slider rotatably connected to the rectangular portion via a connecting rod.

[0007] Preferably, the rectangular portion includes a rectangular outer shell, a limiting portion is provided inside the rectangular outer shell, an I-beam is fixedly connected to the center of the bottom surface of the limiting portion, the I-beam is fixedly connected to the bottom of the rectangular outer shell, and adjusting portions for adjusting the deformation of the limiting portion are respectively provided on both sides of the limiting portion, the adjusting portions are provided on both sides of the top surface of the rectangular outer shell.

[0008] Preferably, the limiting part includes a first limiting plate and a second limiting plate arranged opposite each other, and rectangular elastic plates are respectively provided on both sides between the first limiting plate and the second limiting plate. The first limiting plate and the second limiting plate are connected by a number of bolts, and the bottom surface of the second limiting plate is fixedly connected to the I-beam.

[0009] Preferably, the adjusting part includes a cylinder fixedly connected to the top surface of the rectangular outer shell, a horizontal plate fixedly connected to one end of the cylinder extending into the rectangular outer shell, and a support column fixedly connected to one end of the horizontal plate away from the cylinder's extension end, the support column abutting against the second limiting plate.

[0010] Preferably, the drive unit includes a motor, the motor is driven by a reducer, and the reducer is driven by the ball screw.

[0011] Preferably, the lifting assembly includes a dual-head motor, with housings on both sides of the dual-head motor. The output ends of the dual-head motors are respectively connected to worm gears. The worm gears extend into the housings and mesh with worm wheels. A cylinder is rotatably connected to the bottom surface of the worm wheel. One end of the cylinder extending out of the bottom of the housing is fixedly connected to the calibration mechanism. A screw is threaded to the center of the worm wheel. One end of the screw extending out of the top of the housing is fixedly connected to the bracket.

[0012] Preferably, the calibration mechanism includes a longitudinal drive unit disposed on the worktable, and a transverse drive unit is fixedly connected above the longitudinal drive unit, the transverse drive unit being fixedly connected to the cylinder.

[0013] Preferably, the longitudinal drive unit includes a longitudinal motion screw, the longitudinal motion screw is threadedly connected to a longitudinal motion slider, and longitudinal guide rails are slidably connected to both sides of one end of the longitudinal motion slider facing the worktable, and the longitudinal guide rails are fixedly connected to the worktable.

[0014] The lateral drive unit includes a lateral movement screw disposed above the longitudinal movement slider. The lateral movement screw is threadedly connected to the lateral movement slider. A lateral guide rail is slidably connected to both sides of the end of the lateral movement slider facing the longitudinal movement slider. The lateral guide rail is fixedly connected to the longitudinal movement slider.

[0015] The top surface of the horizontal motion slider is fixedly connected to the cylinder.

[0016] A method for a pre-arc limiting device in the composite rolling process of double-layer metal strip includes the following steps:

[0017] S1. The alignment mechanism is positioned between the overlay and the base layer via a calibration mechanism and a lifting assembly;

[0018] S2. Adjust the contact angle between the two thin strip correction components and the thin strip through the drive unit;

[0019] S3. Then, adjust the curvature of the coating and the base layer using two thin-strip correction components.

[0020] The present invention discloses the following technical effects:

[0021] This invention achieves centering in the double-layer metal strip composite rolling process, featuring safety and high efficiency; it also increases control precision by controlling the curvature of the base and cladding metal strips; and it has a wide range of applications, suitable for composite metal strips of various sizes and materials. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the correction mechanism of the present invention;

[0025] Figure 3 This is a front view schematic diagram of the correction mechanism of the present invention;

[0026] Figure 4This is a schematic diagram of the thin strip correction component structure of the present invention;

[0027] Figure 5 This is a side view of the thin strip correction component of the present invention.

[0028] Figure 6 This is a schematic diagram of the calibration mechanism structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the lifting component structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the top sectional view of the box body of the present invention;

[0031] Figure 9 This is a schematic diagram of the rolling process of the coating and base layer of the present invention;

[0032] Figure 10 This is a flowchart illustrating the adjustment of the curvature and position of the first and second limiting plates of the present invention.

[0033] The components are as follows: 1. Rectangular section; 2. Sliding section; 3. Reducer; 4. Motor; 5. Longitudinal guide rail; 6. Longitudinal motion screw; 7. Longitudinal motion slider; 8. Transverse guide rail; 9. Transverse motion screw; 10. Transverse motion slider; 11. Screw; 12. Longitudinal motion motor; 13. Transverse motion motor; 14. Housing; 15. Cover; 16. Base layer; 17. Cylinder; 18. First limiting plate; 19. Second limiting plate; 20. I-beam; 21. Rectangular outer shell; 22. Rectangular elastic plate; 23. Connecting rod; 24. Ball screw; 25. Slider; 26. Bearing seat; 27. Worktable; 28. Support plate; 29. ​​Double-headed motor; 30. Worm gear; 31. Worm wheel; 32. Cylinder; 33. Bracket; 34. Support plate; 35. Horizontal plate; 36. Support column. Detailed Implementation

[0034] 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.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figures 1-9This invention provides a pre-arc limiting device for a double-layer metal strip composite rolling process, including a correction mechanism disposed between the cladding layer 15 and the base layer 16 for adjusting the position of the cladding layer 15 and the base layer 16. A lifting component for adjusting the height of the correction mechanism is fixedly connected to the lower part of the correction mechanism via a bracket 33. A calibration mechanism for adjusting the longitudinal and transverse positions of the lifting component is disposed below the lifting component. A worktable 27 is disposed below the calibration mechanism. The correction mechanism includes a support plate 34, which is fixedly connected to the top surface of the bracket 33. Strip correction components are disposed on the upper and lower sides of the support plate 34 respectively. A driving part is fixedly connected to the top surface of the bracket 33 on the side away from the support plate 34. The driving part is connected to the strip correction components in a transmission connection.

[0037] This invention achieves centering in the double-layer metal strip composite rolling process, which is safe and efficient; and increases control accuracy by controlling the curvature of the base layer 16 and the cladding layer 15 metal strips; it has a wide range of applications and is suitable for composite metal strips of various sizes and materials.

[0038] Further optimization of the scheme: the thin strip correction component includes a support plate 28 fixedly connected to the support plate 34. A rectangular part 1 is rotatably connected to the end of the support plate 28 away from the drive unit. A sliding part 2 is provided on the support plate 28. The sliding part 2 includes symmetrically arranged bearing seats 26. The two bearing seats 26 are fixedly connected to the support plate 28. A ball screw 24 is rotatably connected between the two bearing seats 26. A slider 25 is threadedly connected to the ball screw 24. The slider 25 is rotatably connected to the rectangular part 1 through a connecting rod 23.

[0039] The ball screw 24 drives the slider 25 to move, and the slider 25 drives the connecting rod 23 to move. The connecting rod 23 rotates between the slider 25 and the rectangular part 1, and the tilt angle of the rectangular part 1 can be adjusted by the movement of the slider 25.

[0040] The scheme is further optimized. The rectangular part 1 includes a rectangular shell 21. A limiting part is provided inside the rectangular shell 21. An I-beam 20 is fixedly connected to the center of the bottom surface of the limiting part. The I-beam 20 is fixedly connected to the bottom of the rectangular shell 21. Adjusting parts for adjusting the deformation of the limiting part are respectively provided on both sides of the limiting part. The adjusting parts are provided on both sides of the top surface of the rectangular shell 21.

[0041] The design is further optimized so that the limiting part includes a first limiting plate 18 and a second limiting plate 19 arranged vertically opposite each other. Rectangular elastic plates 22 are respectively provided on both sides between the first limiting plate 18 and the second limiting plate 19. The first limiting plate 18 and the second limiting plate 19 are connected by several bolts. The bottom surface of the second limiting plate 19 is fixedly connected to an I-beam 20. The center of the bottom surface of the I-beam 20 is fixedly connected to the center of the bottom surface of the second limiting plate 19.

[0042] Further optimization of the scheme: the adjustment part includes a cylinder 17 fixedly connected to the top surface of the rectangular outer shell 21. A horizontal plate 35 is fixedly connected to one end of the cylinder 17 that extends into the rectangular outer shell 21. A support column 36 is fixedly connected to one end of the horizontal plate 35 that is away from the end of the cylinder 17. The support column 36 abuts against the second limiting plate 19.

[0043] The curvature of the first limiting plate 18 and the second limiting plate 19 can be adjusted by the telescopic end of the cylinder 17, so that the thin strip between the first limiting plate 18 and the second limiting plate 19 can be adjusted synchronously, effectively protecting the polished surface of the composite metal thin strip and achieving a better composite effect.

[0044] The design is further optimized so that the drive unit includes a motor 4, which is connected to a reducer 3, and the reducer 3 is connected to a ball screw 24. The motor 4 drives the reducer 3, and the two output ends of the reducer 3 drive the ball screw 24 to rotate.

[0045] Further optimizing the design, the lifting assembly includes a dual-head motor 29. A housing 14 is located on each side of the dual-head motor 29. The output ends of the dual-head motor 29 are respectively connected to worm gears 30. The worm gears 30 extend into the housing 14 and mesh with worm wheels 31. A cylinder 32 is rotatably connected to the bottom surface of the worm wheel 31. One end of the cylinder 32 extending beyond the bottom of the housing 14 is fixedly connected to a calibration mechanism. A screw 11 is threadedly connected to the center of the worm wheel 31. One end of the screw 11 extending beyond the top of the housing 14 is fixedly connected to a bracket 33. The dual-head motor 29 drives the worm gears 30 to rotate, which in turn drives the worm wheels 31 to rotate. The worm wheels 31 then drive the screw 11 to move up and down, effectively adjusting the height of the bracket 33.

[0046] The calibration mechanism is further optimized by including a longitudinal drive unit set on the workbench 27, a transverse drive unit fixedly connected above the longitudinal drive unit, and the transverse drive unit fixedly connected to the cylinder 32.

[0047] The scheme is further optimized. The longitudinal drive unit includes a longitudinal motion screw 6, which is threadedly connected to a longitudinal motion slider 7. The longitudinal motion slider 7 is slidably connected to longitudinal guide rails 5 on both sides of one end facing the worktable 27. The longitudinal guide rails 5 are fixedly connected to the worktable 27. One end of the longitudinal motion screw 6 is driven by a longitudinal motion motor 12. The longitudinal motion motor 12 drives the longitudinal motion screw 6 to rotate, and the longitudinal motion screw 6 drives the longitudinal motion slider 7 to move along the longitudinal guide rails 5.

[0048] The transverse drive unit includes a transverse motion screw 9 disposed above the longitudinal motion slider 7. The transverse motion screw 9 is threadedly connected to a transverse motion slider 10. Transverse guide rails 8 are slidably connected to both sides of the end of the transverse motion slider 10 facing the longitudinal motion slider 7. The transverse guide rails 8 are fixedly connected to the longitudinal motion slider 7. A transverse motion motor 13 is driven to one end of the transverse motion screw 9. The transverse motion motor 13 drives the transverse motion screw 9 to rotate, and the transverse motion screw 9 drives the transverse motion slider 10 to move along the transverse guide rails 8.

[0049] The top surface of the horizontally moving slider 10 is fixedly connected to the cylinder 32.

[0050] The longitudinal motion screw 6 and the transverse motion screw 9 are rotatably connected to supports at both ends, so that the longitudinal motion screw 6 and the transverse motion screw 9 can rotate stably.

[0051] The two supports on the longitudinal motion screw 6 are fixedly connected to the worktable 27; the two supports on the transverse motion screw 9 are fixedly connected to the longitudinal motion slider 7.

[0052] A method for a pre-arc limiting device in the composite rolling process of double-layer metal strip includes the following steps:

[0053] S1. The correction mechanism is positioned between the overlay 15 and the base layer 16 by means of the calibration mechanism and the lifting assembly;

[0054] S2. Adjust the contact angle between the two thin strip correction components and the thin strip through the drive unit;

[0055] S3. Then adjust the curvature of the cladding 15 and the base layer 16 using two thin strip correction components.

[0056] Working process: The dual-head motor 29 drives the worm gear 30 to rotate, the worm gear 30 drives the worm wheel 31 to rotate, and the worm wheel 31 drives the screw 11 to move up and down, adjusting the height of the bracket 33; at the same time, the longitudinal motion motor 12 drives the longitudinal motion screw 6 to rotate, and the longitudinal motion screw 6 drives the longitudinal motion slider 7 to move along the longitudinal guide rail 5; the transverse motion motor 13 drives the transverse motion screw 9 to rotate, and the transverse motion screw 9 drives the transverse motion slider 10 to move along the transverse guide rail 8, so that the bracket 33 is in the required position; then, the motor 4 drives the reducer 3 to work, and the two inputs of the reducer 3... The output end drives the ball screw 24 to rotate, the ball screw 24 drives the slider 25 to move, the slider 25 drives the connecting rod 23 to move, and the connecting rod 23 rotates between the slider 25 and the rectangular part 1. The tilt angle of the rectangular part 1 can be adjusted by the movement of the slider 25. Then, the curvature of the first limiting plate 18 and the second limiting plate 19 can be adjusted by the telescopic end of the cylinder 17, so that the thin strip between the first limiting plate 18 and the second limiting plate 19 can be adjusted synchronously, which effectively protects the polished surface of the composite metal thin strip and can effectively achieve a better composite effect.

[0057] Reference Figure 10 To control the curvature of the base layer 16 and the cladding layer 15 metal strips, the gap between the first limiting plate 18 and the second limiting plate 19 below the support plate 34 is the punch channel, and the gap between the first limiting plate 18 and the second limiting plate 19 above the support plate 34 is the die channel. The curvature values ​​are obtained by substituting the dimensional parameters of the base layer 16 and the cladding layer 15 metal strips into the calculation model. The model includes the following steps:

[0058] S1. Under a specific arc angle θ, the radius of the punch channel is R1, the radius of the die channel is R2, and the inner distance of the symmetrical rectangular elastic plate 22 is k; the thickness of the rectangular elastic plate 22 selected at this time is h; the width of the layered metal material is l, and the thickness is h. i .

[0059] S2. Calculate the thickness and width range of the layered metal material, i.e.

[0060] The thickness range is: 0 < h1 ≤ h;

[0061] Width limit l max for:

[0062] Width lower limit l min for:

[0063] The punch channel radius R1 is:

[0064] The radius R2 of the die channel is:

[0065] S3. Based on the upper and lower limit formulas for width, the range of arc values ​​for the convex and concave die channels can be derived. That is, the upper limit formula for width can be used to calculate the maximum arc value, and the lower limit formula for width can be used to calculate the minimum arc value.

[0066] S4. Adjust the punch and die channels to the calculated arc range by moving the telescopic end of cylinder 17 up and down.

[0067] S5. Using the sliding part 2, adjust the base layer 16 and the metal strip correction assembly of the coating layer 15 until their included angle is equal to the engagement angle. The model includes the following steps:

[0068] S5-1. Given that the interlocking angle is b, and the base layer 16 and the cladding layer 15 metal strip correction components are symmetrical, that is, adjust the angle of the base layer 16 or the cladding layer 15 metal strip correction component to b / 2.

[0069] S5-2. Calculate the distance d that slider 25 moves in t minutes. The specific steps are as follows:

[0070] (1) Given that the motor 4 rotates N revolutions per minute after passing through the reducer 3, and the lead of the ball screw 24 is Pmm, the total distance the slider 25 moves per minute is d. min =N×p.

[0071] (2) The distance that slider 25 moves in t minutes is: d = d min ×t.

[0072] S5-3. Given that the distance between the two shafts of the correction assembly is c1, the distance between the correction assembly and the ball screw 24 is c2, the initial position of the slider 25 is z, and its position at minute t is zd, i.e.

[0073] The initial turning angle is:

[0074] The angle at minute t is:

[0075] S5-4, according to We can determine the distance d to move and the number of revolutions required for motor 4.

[0076] S6. Adjust the engagement angle between the upper and lower correction mechanisms to the specified value b based on the above calculation results.

[0077] By adjusting the X, Y, and Z values ​​of the correction mechanism through calibration and upgrading components, the roll gap between the upper and lower work rolls of the rolling mill is brought to the middle position.

[0078] This invention controls the curvature of the base layer 16 and the cladding layer 15 metal strips, thereby improving the lateral stiffness of the base layer 16 and the cladding layer 15 metal strips and making them less prone to displacement. On the other hand, the base layer 16 and the cladding layer 15 metal strips have a gap between the convex and concave die channels. The gap on one side of the concave die channel protects the polished surface of the composite metal strip, achieving a better composite effect.

[0079] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0080] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A pre-arc limiting device for the composite rolling process of double-layer metal strip, characterized in that: It includes a correction mechanism for adjusting the position of the cover (15) and the base layer (16) disposed between the cover (15) and the base layer (16). A lifting component for adjusting the height of the correction mechanism is fixedly connected to the lower part of the correction mechanism via a bracket (33). A calibration mechanism for adjusting the longitudinal and transverse positions of the lifting component is disposed below the lifting component. A workbench (27) is disposed below the calibration mechanism. The correction mechanism includes a support plate (34), which is fixedly connected to the top surface of the bracket (33). Thin strip correction components are respectively provided on the upper and lower sides of the support plate (34). A driving part is fixedly connected to the top surface of the bracket (33) on the side away from the support plate (34). The driving part is connected to the thin strip correction component in a transmission connection. The thin strip correction assembly includes a support plate (28) fixedly connected to the support plate (34). A rectangular part (1) is rotatably connected to one end of the support plate (28) away from the drive unit. A sliding part (2) is provided on the support plate (28). The sliding part (2) includes symmetrically arranged bearing seats (26). The two bearing seats (26) are fixedly connected to the support plate (28). A ball screw (24) is rotatably connected between the two bearing seats (26). A slider (25) is threadedly connected to the ball screw (24). The slider (25) is rotatably connected to the rectangular part (1) through a connecting rod (23). The rectangular part (1) includes a rectangular outer shell (21), a limiting part is provided inside the rectangular outer shell (21), an I-beam (20) is fixedly connected to the center of the bottom surface of the limiting part, the I-beam (20) is fixedly connected to the bottom of the rectangular outer shell (21), and adjustment parts for adjusting the deformation of the limiting part are respectively provided on both sides of the limiting part, the adjustment parts are provided on both sides of the top surface of the rectangular outer shell (21); The limiting part includes a first limiting plate (18) and a second limiting plate (19) arranged opposite each other. Rectangular elastic plates (22) are respectively provided on both sides between the first limiting plate (18) and the second limiting plate (19). The first limiting plate (18) and the second limiting plate (19) are connected by several bolts. The bottom surface of the second limiting plate (19) is fixedly connected to the I-beam (20). The adjustment unit includes a cylinder (17) fixedly connected to the top surface of the rectangular outer shell (21). A horizontal plate (35) is fixedly connected to one end of the cylinder (17) that extends into the rectangular outer shell (21). A support column (36) is fixedly connected to one end of the horizontal plate (35) away from the end of the cylinder (17). The support column (36) abuts against the second limiting plate (19). The drive unit includes a motor (4), which is connected to a reducer (3) and is connected to the ball screw (24). The curvature of the first limiting plate (18) and the second limiting plate (19) is adjusted by the telescopic end of the cylinder (17), so that the thin strip between the first limiting plate (18) and the second limiting plate (19) can be adjusted synchronously. The gap between the first limiting plate (18) and the second limiting plate (19) located below the pallet (34) is the punch channel, and the gap between the first limiting plate (18) and the second limiting plate (19) located above the pallet (34) is the die channel.

2. The pre-arc limiting device for the double-layer metal strip composite rolling process according to claim 1, characterized in that: The lifting assembly includes a dual-head motor (29), with housings (14) on both sides of the dual-head motor (29). The output ends of the dual-head motor (29) are respectively connected to worm gears (30). The worm gears (30) extend into the housings (14) and mesh with worm wheels (31). The bottom surface of the worm wheels (31) is rotatably connected to a cylinder (32). One end of the cylinder (32) extending out of the bottom of the housings (14) is fixedly connected to the calibration mechanism. The center thread of the worm wheels (31) is connected to a screw (11). One end of the screw (11) extending out of the top of the housings (14) is fixedly connected to the bracket (33).

3. The pre-arc limiting device for the double-layer metal strip composite rolling process according to claim 2, characterized in that: The calibration mechanism includes a longitudinal drive unit disposed on the workbench (27), and a transverse drive unit is fixedly connected above the longitudinal drive unit. The transverse drive unit is fixedly connected to the cylinder (32).

4. The pre-arc limiting device for the double-layer metal strip composite rolling process according to claim 3, characterized in that: The longitudinal drive unit includes a longitudinal motion screw (6), which is threadedly connected to a longitudinal motion slider (7). The longitudinal motion slider (7) has longitudinal guide rails (5) slidably connected to both sides of one end facing the worktable (27). The longitudinal guide rails (5) are fixedly connected to the worktable (27). The transverse drive unit includes a transverse motion screw (9) disposed above the longitudinal motion slider (7). The transverse motion screw (9) is threadedly connected to a transverse motion slider (10). A transverse guide rail (8) is slidably connected to both sides of one end of the transverse motion slider (10) facing the longitudinal motion slider (7). The transverse guide rail (8) is fixedly connected to the longitudinal motion slider (7). The top surface of the transverse motion slider (10) is fixedly connected to the cylinder (32).

5. A method of using a pre-arc limiting device for a double-layer metal strip composite rolling process, based on the pre-arc limiting device for a double-layer metal strip composite rolling process according to any one of claims 1-4, characterized in that: Includes the following steps: S1. The correction mechanism is placed between the overlay (15) and the base layer (16) by means of the calibration mechanism and the lifting assembly; S2. Adjust the contact angle between the two thin strip correction components and the thin strip through the drive unit; S3. Then adjust the curvature of the coating (15) and the base layer (16) by using two thin strip correction components.

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