Front variable arc limiting device and method in double-layer metal thin strip composite rolling process

Abstract

The invention relates to the technical field of composite rolling of thin metal strips, in particular to a front arc-changing limiting device and method in the composite rolling process of a double-layer thin metal strip, and the front arc-changing limiting device comprises a deviation rectifying mechanism which is arranged between a coating layer and a base layer and used for adjusting the positions of the coating layer and the base layer. A lifting assembly used for adjusting the height of the deviation rectifying mechanism is fixedly connected to the lower portion of the deviation rectifying mechanism through a support, a calibration mechanism used for adjusting the longitudinal and transverse positions of the lifting assembly is arranged below the lifting assembly, and a workbench is arranged below the calibration mechanism. The deviation rectifying mechanism comprises a supporting plate, the supporting plate is fixedly connected with the top face of the support, thin strip deviation rectifying assemblies are arranged on the upper side and the lower side of the supporting plate respectively, and a driving part is fixedly connected with the top face of the side, away from the supporting plate, of the support and is in transmission connection with the thin strip deviation rectifying assemblies. The centering device achieves centering in the double-layer metal thin strip composite rolling process, has the advantages of being safe and efficient, is wide in application range and is suitable for composite metal thin strips of various sizes and various materials.

Description

Technical Field

[0001] The invention relates to the technical field of metal thin strip composite rolling, and in particular to a pre-arc variable position limiting device and method for a double-layer metal thin strip composite rolling process. Background Art

[0002] As aerospace, electronic information, rail transit and other related fields gradually develop towards intelligence and miniaturization, the market size of micro-electromechanical systems has increased year by year, and the demand for micro-components has also increased. Therefore, higher requirements are put forward for the comprehensive performance and diversity of thinner metal materials, and it is of great significance to develop metal composite thin strips with excellent performance.

[0003] The preparation of composite thin strips is a key link in promoting product miniaturization and accelerating product intelligence. However, during the composite rolling process of double-layer metal thin strips, the rolling stress between the rollers and the strip is unevenly distributed along the transverse direction of the plate and strip, and the base and cladding metal thin strips will be offset and misaligned. Edge cracks may occur, and the composite thin strip may bend along the rolling direction. Even the two metals will not be combined together. These will greatly affect the product quality and preparation efficiency of the composite thin strip. Therefore, a pre-arc limit device and method for the composite rolling process of double-layer metal thin strips is urgently needed to solve the above problems. Summary of the invention

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

[0005] To achieve the above-mentioned purpose, the present invention provides the following scheme: a pre-arc limiting device for a double-layer metal thin strip composite rolling process, comprising a correction mechanism arranged between the coating and the base layer for adjusting the position of the coating and the base layer, a lifting component for adjusting the height of the correction mechanism is fixedly connected to the bottom of the correction mechanism through a bracket, a calibration mechanism for adjusting the longitudinal and transverse positions of the lifting component is arranged below the lifting component, and a workbench is arranged below the calibration mechanism; the correction mechanism comprises a support plate, the support plate is fixedly connected to the top surface of the bracket, the thin strip correction components are respectively arranged on the upper and lower sides of the support plate, the top surface of the bracket away from the support plate is fixedly connected to a driving part, and the driving part is transmission-connected to the thin strip correction component.

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

[0007] Preferably, the rectangular portion includes a rectangular shell, a limiting portion is arranged inside the rectangular 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 shell, and adjustment portions for adjusting the deformation amount of the limiting portion are respectively arranged on both sides of the limiting portion, and the adjustment portions are arranged on both sides of the top surface of the rectangular shell.

[0008] Preferably, the limiting portion includes a first limiting plate and a second limiting plate which are arranged opposite to each other up and down, and rectangular elastic plates are respectively arranged 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 plurality 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 shell, the telescopic end of the cylinder extending into the rectangular shell is fixedly connected to a cross plate, the end of the cross plate away from the telescopic end of the cylinder is fixedly connected to a support column, and the support column abuts against the second limit plate.

[0010] Preferably, the driving unit comprises a motor, the motor is transmission-connected to a reducer, and the reducer is transmission-connected to the ball screw.

[0011] Preferably, the lifting assembly includes a double-headed motor, a box body is respectively provided on both sides of the double-headed motor, the output ends of the double-headed motor are respectively connected to worms, the worms extend into the box body and are meshed with a worm wheel, the bottom surface of the worm wheel is rotatably connected to a cylinder, the end of the cylinder extending out of the bottom of the box body is fixedly connected to the calibration mechanism, the center thread of the worm wheel is connected to a screw, and the end of the screw extending out of the top of the box body is fixedly connected to the bracket.

[0012] Preferably, the calibration mechanism includes a longitudinal driving part arranged on the workbench, a transverse driving part is fixedly connected above the longitudinal driving part, and the transverse driving part is fixedly connected to the cylinder.

[0013] Preferably, the longitudinal driving part comprises a longitudinal motion lead screw, the longitudinal motion lead screw is threadedly connected with a longitudinal motion slider, the longitudinal motion slider is slidably connected with longitudinal guide rails on both sides of one end facing the workbench, and the longitudinal guide rails are fixedly connected to the workbench;

[0014] The transverse driving part comprises a transverse motion lead screw arranged above the longitudinal motion slider, the transverse motion lead screw is threadedly connected to the transverse motion slider, and the transverse motion slider is slidably connected to transverse guide rails on both sides of one end facing the longitudinal motion slider, and the transverse guide rails are fixedly connected to the longitudinal motion slider;

[0015] The top surface of the transverse motion sliding block is fixedly connected to the cylinder.

[0016] A method for providing a pre-arc limiter in a double-layer metal strip composite rolling process, comprising the following steps:

[0017] S1. The correction mechanism is placed between the cover and the base layer through the calibration mechanism and the lifting assembly;

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

[0019] S3. The curvature of the cover layer and the base layer is then adjusted through two thin belt correction components.

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

[0021] The invention realizes the centering during the composite rolling process of the double-layer metal strip, and has the characteristics of safety and high efficiency; and increases the control accuracy by controlling the curvature of the base layer and the cladding metal strip; and has a wide range of applications, and is suitable for composite metal strips of various sizes and various materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

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

[0027] Figure 5 It is a schematic diagram of the side structure of the thin strip deviation correction assembly of the present invention;

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

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

[0030] Figure 8 It is a schematic diagram of the top cross-sectional structure of the box body of the present invention;

[0031] Fig. 9 It is a schematic diagram of the rolling process of the coating and the base layer of the present invention;

[0032] Fig.10 A flow chart of adjusting the curvature and position of the first limiting plate and the second limiting plate of the present invention;

[0033] Among them, 1. rectangular part; 2. sliding part; 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. box; 15. coating; 16. base layer; 17. cylinder; 18. first limit plate; 19. second limit plate; 20. I-beam; 21. rectangular shell; 22. rectangular elastic plate; 23. connecting rod; 24. ball screw; 25. slider; 26. bearing seat; 27. workbench; 28. support plate; 29. ​​double-headed motor; 30. worm; 31. worm wheel; 32. cylinder; 33. bracket; 34. support plate; 35. cross plate; 36. support column. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 9The present invention provides a pre-arc limiting device for a double-layer metal thin strip composite rolling process, comprising a correction mechanism arranged between a coating 15 and a base layer 16 for adjusting the positions of the coating 15 and the base layer 16, a lifting component for adjusting the height of the correction mechanism is fixedly connected to the bottom of the correction mechanism through a bracket 33, a calibration mechanism for adjusting the longitudinal and transverse positions of the lifting component is arranged below the lifting component, and a workbench 27 is arranged below the calibration mechanism; the correction mechanism comprises a support plate 34, the support plate 34 is fixedly connected to the top surface of the bracket 33, the upper and lower sides of the support plate 34 are respectively provided with a thin strip correction component, the top surface of the bracket 33 away from the support plate 34 is fixedly connected to a driving part, and the driving part is transmission-connected to the thin strip correction component.

[0037] The present invention realizes the centering during the composite rolling process of the double-layer metal strip, and has the characteristics of safety and high efficiency; and increases the control accuracy by controlling the curvature of the base layer 16 and the cladding layer 15 metal strip; and has a wide range of applications, and is suitable for composite metal strips of various sizes and various materials.

[0038] A further optimized solution is that the thin strip correction assembly includes a support plate 28 fixedly connected to the support plate 34, the end of the support plate 28 away from the driving part is rotatably connected to the rectangular part 1, the support plate 28 is provided with a sliding part 2, the sliding part 2 includes symmetrically arranged bearing seats 26, 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, the ball screw 24 is threadedly connected to the slider 25, and 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 portion 1 , and the tilt angle of the rectangular portion 1 can be adjusted by the movement of the slider 25 .

[0040] A further optimized solution is that the rectangular portion 1 includes a rectangular shell 21, a limiting portion is arranged inside the rectangular shell 21, an I-beam 20 is fixedly connected to the center of the bottom surface of the limiting portion, the I-beam 20 is fixedly connected to the bottom of the rectangular shell 21, and adjustment portions for adjusting the deformation amount of the limiting portion are respectively arranged on both sides of the limiting portion, and the adjustment portions are arranged on both sides of the top surface of the rectangular shell 21.

[0041] Further optimized solution, the limit part includes a first limit plate 18 and a second limit plate 19 arranged opposite to each other up and down, and rectangular elastic plates 22 are respectively arranged on both sides between the first limit plate 18 and the second limit plate 19, and the first limit plate 18 and the second limit plate 19 are connected by a plurality of bolts, and the bottom surface of the second limit plate 19 is fixedly connected to the I-beam 20. The I-beam 20 is fixedly connected to the center of the bottom surface of the second limit plate 19.

[0042] A further optimized solution is that the adjustment part includes a cylinder 17 fixedly connected to the top surface of the rectangular shell 21, and the telescopic end of the cylinder 17 extending into the rectangular shell 21 is fixedly connected to a cross plate 35, and the end of the cross plate 35 away from the telescopic end of the cylinder 17 is fixedly connected to a support column 36, and the support column 36 abuts against the second limit plate 19.

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

[0044] In a further optimized solution, the driving 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 to work, and the two output ends of the reducer 3 respectively drive the ball screw 24 to rotate.

[0045] Further optimization scheme, the lifting assembly includes a double-headed motor 29, and the box 14 is respectively provided on both sides of the double-headed motor 29. The output ends of the double-headed motor 29 are respectively connected to the worm 30, and the worm 30 extends into the box 14 and meshes with the worm wheel 31. The bottom surface of the worm wheel 31 is rotatably connected to the cylinder 32, and the end of the cylinder 32 extending out of the bottom of the box 14 is fixedly connected to the calibration mechanism, and the center of the worm wheel 31 is threadedly connected to the screw 11, and the end of the screw 11 extending out of the top of the box 14 is fixedly connected to the bracket 33. The double-headed motor 29 drives the worm 30 to rotate, the worm 30 drives the worm wheel 31 to rotate, and the worm wheel 31 drives the screw 11 to move up and down, which can effectively adjust the height of the bracket 33.

[0046] According to a further optimized solution, the calibration mechanism includes a longitudinal driving portion disposed on the workbench 27 , a transverse driving portion is fixedly connected above the longitudinal driving portion, and the transverse driving portion is fixedly connected to the cylinder 32 .

[0047] A further optimized solution is that the longitudinal driving part includes a longitudinal motion lead screw 6, which is threadedly connected to a longitudinal motion slider 7, and the longitudinal motion slider 7 is slidingly connected to longitudinal guide rails 5 on both sides of one end facing the workbench 27, and the longitudinal guide rails 5 are fixedly connected to the workbench 27; one end of the longitudinal motion lead screw 6 is transmission-connected to a longitudinal motion motor 12, and the longitudinal motion motor 12 drives the longitudinal motion lead screw 6 to rotate, and the longitudinal motion lead screw 6 drives the longitudinal motion slider 7 to move along the longitudinal guide rail 5.

[0048] The transverse driving part includes a transverse motion screw 9 arranged above the longitudinal motion slider 7, the transverse motion screw 9 is threadedly connected with the transverse motion slider 10, and the transverse motion slider 10 is slidingly connected with transverse guide rails 8 on both sides of one end of the longitudinal motion slider 7, and the transverse guide rails 8 are fixedly connected to the longitudinal motion slider 7; one end of the transverse motion screw 9 is transmission-connected with a transverse motion motor 13, 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.

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

[0050] The two ends of the longitudinal motion lead screw 6 and the transverse motion lead screw 9 are rotatably connected with supports, so that the longitudinal motion lead screw 6 and the transverse motion lead screw 9 can rotate stably.

[0051] The two supports on the longitudinal motion lead screw 6 are fixedly connected to the workbench 27 ; the two supports on the transverse motion lead screw 9 are fixedly connected to the longitudinal motion slide block 7 .

[0052] A method for providing a pre-arc limiter in a double-layer metal strip composite rolling process, comprising the following steps:

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

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

[0055] S3. The curvature of the cover layer 15 and the base layer 16 is then adjusted by two thin belt deviation correction components.

[0056] Working process: the double-headed motor 29 drives the worm 30 to rotate, the worm 30 drives the worm wheel 31 to rotate, and the worm wheel 31 drives the screw 11 to move up and down to adjust the height of the bracket 33; at the same time, the longitudinal motion motor 12 drives the longitudinal motion lead screw 6 to rotate, and the longitudinal motion lead 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 lead screw 9 to rotate, and the transverse motion lead 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 outputs of the reducer 3 The output ends respectively drive 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 portion 1, and the inclination angle of the rectangular portion 1 can be adjusted by the movement of the slider 25; then, the curvature of the first limit plate 18 and the second limit plate 19 can be adjusted through the telescopic end of the cylinder 17, so that the curvature of the thin strip between the first limit plate 18 and the second limit 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 Fig.10 In order to control the curvature of the metal strips of the base layer 16 and the cladding layer 15, 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 size parameters of the metal strips of the base layer 16 and the cladding layer 15 are substituted into the calculation model to obtain the curvature value, and the model includes the following steps:

[0058] S1, under a specific arc θ, the radius of the male die channel is R1, the radius of the female 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 layered metal materials, i.e.

[0060] Thickness range: 0

[0061] Width upper limit l max for:

[0062] Width lower limit l min for:

[0063] The radius of the punch channel R1 is:

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

[0065] S3. According to the upper and lower limit formulas of the width, the curvature value range of the male and female die channels can be inferred. That is, the upper limit formula of the width can be used to calculate the maximum curvature value, and the lower limit formula of the width can be used to calculate the minimum curvature value.

[0066] S4. By moving the telescopic end of the cylinder 17 up and down, the male and female die channels are adjusted to be within the arc range calculated above.

[0067] S5, using the sliding part 2 to adjust the base layer 16 and the cover layer 15 metal strip deviation correction assembly until the included angle is equal to the bite angle. The model includes the following steps:

[0068] S5-1. The bite angle is known to be b, and the base layer 16 and the metal strip correction assembly of the cladding layer 15 are symmetrical in the upper and lower parts, that is, the angle of the metal strip correction assembly of the base layer 16 or the cladding layer 15 is adjusted to b / 2.

[0069] S5-2, calculate the moving distance d of the slider 25 in t minutes, the specific steps are as follows:

[0070] (1) It is known that the motor 4 rotates N times per minute after passing through the reducer 3, and the lead of the ball screw 24 is P mm, that is, the total moving distance of the slider 25 per minute is: d min =N×p.

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

[0072] S5-3. It is known that the distance between the two rotating shafts of the deviation correction component is c1, the rotating rod between the deviation correction component and the ball screw 24 is c2, the initial position of the slider 25 is z, and the position at t minutes is zd, that is,

[0073] The initial rotation angle is:

[0074] The rotation angle at t minutes is:

[0075] S5-4, according to It can be known that the moving distance d and the number of revolutions that the motor 4 needs to rotate can be obtained.

[0076] S6. According to the above calculation results, the bite angle between the upper and lower deviation correcting mechanisms is adjusted to a specified value b.

[0077] Through the calibration mechanism and upgrade components, the X, Y, and Z values ​​of the correction mechanism are adjusted to reach the middle position of the roll gap between the upper and lower working rolls of the rolling mill used.

[0078] The present invention controls the curvature of the base layer 16 and the cladding layer 15 metal strips. On the one hand, the lateral stiffness of the base layer 16 and the cladding layer 15 metal strips is improved to prevent them from being deflected. On the other hand, a gap is left between the convex and concave die channels of the base layer 16 and the cladding layer 15 metal strips. The gap on one side of the concave die channel protects the polished surface of the composite metal strip, thereby achieving a better composite effect.

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

[0080] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A pre-arc limiter for a double-layer metal strip composite rolling process, characterized in that: It comprises a deviation correction mechanism arranged between the coating (15) and the base layer (16) for adjusting the position of the coating (15) and the base layer (16); a lifting assembly for adjusting the height of the deviation correction mechanism is fixedly connected to the lower part of the deviation correction mechanism through a bracket (33); a calibration mechanism for adjusting the longitudinal and transverse position of the lifting assembly is arranged below the lifting assembly; and a workbench (27) is arranged below the calibration mechanism; The correction mechanism comprises a support plate (34), the support plate (34) is fixedly connected to the top surface of the bracket (33), and thin strip correction components are respectively arranged on the upper and lower sides of the support plate (34). A driving part is fixedly connected to the top surface of a side of the bracket (33) away from the support plate (34), and the driving part is transmission-connected to the thin strip correction component.

2. The pre-arc-changing limiting device for the double-layer metal thin strip composite rolling process according to claim 1 is characterized in that: The thin strip correction assembly comprises a support plate (28) fixedly connected to the support plate (34), the support plate (28) being rotatably connected to a rectangular portion (1) at one end away from the driving portion, a sliding portion (2) being provided on the support plate (28), the sliding portion (2) comprising symmetrically arranged bearing seats (26), two bearing seats (26) being fixedly connected to the support plate (28), a ball screw (24) being rotatably connected between the two bearing seats (26), the ball screw (24) being threadedly connected to a slider (25), the slider (25) being rotatably connected to the rectangular portion (1) via a connecting rod (23).

3. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 2 is characterized in that: The rectangular portion (1) comprises a rectangular outer shell (21), a limiting portion is arranged inside the rectangular outer shell (21), an I-beam (20) is fixedly connected to the center of the bottom surface of the limiting portion, the I-beam (20) is fixedly connected to the bottom of the rectangular outer shell (21), and adjustment portions for adjusting the deformation amount of the limiting portion are respectively arranged on both sides of the limiting portion, and the adjustment portions are arranged on both sides of the top surface of the rectangular outer shell (21).

4. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 3 is characterized in that: The limiting part comprises a first limiting plate (18) and a second limiting plate (19) which are arranged opposite to each other in an upper and lower direction, and rectangular elastic plates (22) are respectively arranged on both sides between the first limiting plate (18) and the second limiting plate (19), and the first limiting plate (18) and the second limiting plate (19) are connected by a plurality of bolts, and the bottom surface of the second limiting plate (19) is fixedly connected to the I-beam (20).

5. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 4 is characterized in that: The adjusting portion comprises a cylinder (17) fixedly connected to the top surface of the rectangular outer shell (21); the telescopic end of the cylinder (17) extending into the rectangular outer shell (21) is fixedly connected to a transverse plate (35); the end of the transverse plate (35) away from the telescopic end of the cylinder (17) is fixedly connected to a support column (36); the support column (36) abuts against the second limit plate (19).

6. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 2 is characterized in that: The driving unit comprises a motor (4), the motor (4) is drivingly connected to a reducer (3), and the reducer (3) is drivingly connected to the ball screw (24).

7. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 1 is characterized in that: The lifting assembly comprises a double-headed motor (29), a box body (14) is respectively arranged on both sides of the double-headed motor (29), the output ends of the double-headed motor (29) are respectively connected to worms (30), the worms (30) extend into the box body (14) and mesh with a worm wheel (31), the bottom surface of the worm wheel (31) is rotatably connected to a cylinder (32), one end of the cylinder (32) extending out of the bottom of the box body (14) is fixedly connected to the calibration mechanism, the center of the worm wheel (31) is threadedly connected to a screw rod (11), and one end of the screw rod (11) extending out of the top of the box body (14) is fixedly connected to the bracket (33).

8. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 7 is characterized in that: The calibration mechanism comprises a longitudinal drive unit arranged on the workbench (27), a transverse drive unit is fixedly connected above the longitudinal drive unit, and the transverse drive unit is fixedly connected to the cylinder (32).

9. The pre-arc variable position limiting device for the double-layer metal thin strip composite rolling process according to claim 8 is characterized in that: The longitudinal driving part comprises a longitudinal motion lead screw (6), the longitudinal motion lead screw (6) is threadedly connected to a longitudinal motion slider (7), and the longitudinal motion slider (7) is slidably connected to longitudinal guide rails (5) on both sides of one end facing the workbench (27), and the longitudinal guide rails (5) are fixedly connected to the workbench (27); The transverse driving part comprises a transverse motion lead screw (9) arranged above the longitudinal motion slider (7), the transverse motion lead screw (9) being threadedly connected to the transverse motion slider (10), and the transverse motion slider (10) is slidably connected to transverse guide rails (8) on both sides of one end facing the longitudinal motion slider (7), and the transverse guide rails (8) are fixedly connected to the longitudinal motion slider (7); The top surface of the transverse motion slider (10) is fixedly connected to the cylinder (32).

10. A method for providing a pre-arc limiter during a double-layer metal strip composite rolling process, based on the pre-arc limiter during a double-layer metal strip composite rolling process according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The correction mechanism is placed between the coating (15) and the base layer (16) by means of a calibration mechanism and a lifting assembly; S2. Adjust the contact angle between the two strip correction components and the strip through the drive unit; S3. The curvature of the coating layer (15) and the base layer (16) are then adjusted by two thin belt deviation correction components.

Images