A variable gauge cold rolling mill and a variable gauge cold rolling method

Abstract

The application discloses a variable-thickness cold rolling machine and a variable-thickness cold rolling method, which comprises an uncoiler, a winding device arranged at the lower part of the uncoiler, a rolling mill inlet device arranged at the output end of the right side of the uncoiler, a main machine device arranged at the right side of the rolling mill inlet device, a main transmission device installed at the rear side of the main machine device, a post-machine device arranged at the right side output end of the main transmission device, a coiler arranged at the output end of the post-machine device, and a discharging device arranged at the lower part of the coiler. The winding device is used for stably feeding the uncoiler, a group of feeding of the winding material is prepared during the uncoiling process of the uncoiler, the material changing time is saved to the maximum, the winding material is pretreated through the rolling mill inlet device, the material is stably flattened through the cooperation of the output roller and the pressing plate in the rolling mill inlet device, the bending property of the winding material is reduced, and the stability of the feeding is improved through the cooperation of the two groups of auxiliary rollers and the positioning shafts.

Description

Technical Field

[0001] This invention belongs to the technical field of variable thickness cold rolling mills, specifically relating to a variable thickness cold rolling mill and a variable thickness cold rolling method. Background Technology

[0002] Cold rolling mills are a crucial component of steel processing technology. A typical cold rolling mill unit employs two mills with perpendicular roll gaps. The first mill reduces the diameter of the steel bar by flattening it, while the second mill further reduces it by rounding it. Traditionally, both mills are equipped with drive mechanisms. This method often suffers from problems due to mismatched rolling speeds. Furthermore, based on the principle of incompressibility of metals, the strip is subjected to compressive and tensile stresses during rolling, creating an internal stress field. When the compressive stress reaches a critical value, buckling instability occurs at the stress points, resulting in a wavy appearance on the strip. Even when the compressive stress does not reach the critical value causing buckling, the strip does not exhibit wavy characteristics, but the presence of internal stress causes deformation in another form. Existing technology can only perform single-stage pressing and cannot meet the demands for more efficient production. Therefore, there is an urgent need for a variable-thickness cold rolling mill and a variable-thickness cold rolling method. Summary of the Invention

[0003] The purpose of this invention is to provide a variable thickness cold rolling mill and a variable thickness cold rolling method, which uses a pairing device to open and press the coil, change the overall state of the coil, and rewind and remove the coil after processing, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a variable thickness cold rolling mill and a variable thickness cold rolling method, comprising an uncoiler, wherein an upper coiling device is provided at the lower part of the uncoiler, a mill inlet device is provided at the right output end of the uncoiler, a main unit is provided at the right side of the mill inlet device, a main drive device is installed at the rear side of the main drive device, a machine backing device is provided at the right output end of the main drive device, a coiler is provided at the output end of the machine backing device, an unloading device is provided at the lower part of the coiler, a support roll changing device is provided at the right side of the unloading device, an oil collection trough is connected and installed at the right output end of the support roll changing device, a work roll changing device is connected and installed at the right output end of the oil collection trough, and a top platform is provided at the rear side of the support roll changing device.

[0005] The uncoiler includes a first worktable, inside which is a first rotary positioning seat. A first hydraulic rod pusher is provided on the upper part of the first worktable, and a push plate is installed on the lower part of the first hydraulic rod pusher via a top shaft. The push plate is movably installed corresponding to the position of the first rotary positioning seat.

[0006] The winding device is provided with a first guide rail, on which a drive motor is slidably mounted. A first push block is mounted on the upper part of the drive motor, and sliding rollers are symmetrically arranged on the left and right sides of the upper surface of the first push block.

[0007] The first workbench has a material plate on its right side, a positioning seat on its right side, two sets of pressure rollers symmetrically mounted on the right side inside the positioning seat, three sets of first leveling rollers alternately mounted on the right side inside the positioning seat, a push rod on the upper part of the positioning seat corresponding to the pressure rollers and the first leveling rollers, a hydraulic shaft on the upper left side of the pressure rollers, a roller rotatably mounted on the lower part of the hydraulic shaft corresponding to the material plate position, and two sets of limiting plates symmetrically mounted on the right side of the positioning seat corresponding to the positioning seat output port position.

[0008] The mill inlet equipment includes a second worktable. A drive seat is provided in the middle of the upper surface of the second worktable. An output roller is rotatably mounted on the upper part of the drive seat. A flattening seat is installed on the upper part of the second worktable corresponding to the position of the output roller. A second hydraulic rod push rod is provided in the center of the upper part of the flattening seat. The output end of the second hydraulic rod push rod passes through the flattening seat, and a pressure plate is fixedly installed at the output end of the positioning seat. A first protective plate is attached to the left and right sides of the second hydraulic rod push rod.

[0009] The second worktable has mounting seats symmetrically installed on its left and right sides on its upper surface. An auxiliary roller is rotatably mounted inside the mounting seat on the upper surface of the second worktable, and a positioning shaft is rotatably mounted inside the mounting seat corresponding to the auxiliary roller.

[0010] The main unit includes a third workbench, with a feed limit plate and a discharge limit plate installed on the left and right sides of the third workbench at corresponding opening positions. A third hydraulic rod push rod is symmetrically installed inside the third workbench, and the third hydraulic rod push rod is controlled by the main transmission device. A pressure roller is installed at the output end of the third hydraulic rod push rod.

[0011] The rear device includes a fourth workbench, on the left side of the upper surface of the fourth workbench, a movable limiting plate is provided on the right side of the movable limiting plate, and a second protective plate is provided on the right side of the second protective plate.

[0012] The winding machine includes a base, a second rotary positioning seat is provided inside the base, a fourth hydraulic push rod is provided outside the base, a second guide rail is provided on the lower front side of the base, and a second push block is slidably mounted on the upper part of the second guide rail.

[0013] A method for cold rolling thickening using a variable-thickness cold rolling mill, characterized by comprising the following steps:

[0014] S1. Feeding and Leveling: The first pusher pushes the roll into the first rotating positioning seat for limiting. The first hydraulic rod pusher controls the push plate to limit the roll, ensuring that the roll can be stably opened and fed out. Through the cooperation of the material plate and the roller, the roll enters the positioning seat and is leveled and fed out by the pressure roller and the first leveling roller.

[0015] S2. Pre-processing: After the roll material enters the main unit, it is pressed and fed by auxiliary rollers and positioning shafts. Pressure is provided by the second hydraulic rod pusher leg flat seat. The thickness of the roll material is controlled by the rotation of the output roller. After pressing, the roll material is fed into the main unit by another set of auxiliary rollers and positioning shafts.

[0016] S3. Forming Processing: After the coil material has completed pre-processing and entered the main machine unit, the upper and lower pressure rollers are controlled by the control of the third hydraulic rod push rod of the main drive device to press the coil material and send it into the machine unit to complete the final leveling work. After the limit protection of the movable limit plate and the movable limit plate, it enters the second leveling wheel for final leveling. The second rotating positioning seat performs the coiling operation to complete the material collection work.

[0017] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this invention are:

[0018] In this invention, a winding device is used to stably feed the uncoiler. During the unwinding process of one set of uncoilers, a set of coils is prepared for feeding, minimizing material changeover time. At the same time, a mill inlet device is used to pre-process the coils. The output rollers and pressure plates inside the mill inlet device are used to stably flatten the material, reducing the curvature of the coils. Two sets of auxiliary rollers and positioning shafts are used to increase the stability of feeding.

[0019] In this invention, the thickness of the roll material is controlled by a main host device, and the pressure roller is moved by a third hydraulic rod pusher controlled by a main drive device to apply pressure to the roll material to change its thickness. The roll material is then leveled by a second leveling wheel set on the upper part of the machine rear device and fed out, thereby improving processing efficiency. Attached Figure Description

[0020] Figure 1 This is an overall structural view of the present invention;

[0021] Figure 2 This is a structural view of the support roller changing device of the present invention;

[0022] Figure 3 This is a top view of the overall structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the uncoiling machine structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the mill inlet equipment of the present invention;

[0025] Figure 6 This is an overall structural view of the host device of the present invention;

[0026] Figure 7 This is a flowchart of the method of the present invention.

[0027] In the diagram: 1. Uncoiler; 2. Mill inlet equipment; 3. Main unit; 4. Main drive unit; 5. Rear unit; 6. Coiler; 7. Unloading device; 8. Coiling device; 9. Support roll changing device; 10. Oil collection trough; 11. Work roll changing device; 12. Top platform; 13. First worktable; 14. First rotary positioning seat; 15. First hydraulic push rod; 16. First guide rail; 17. First push block; 18. Sliding roller; 19. Material plate; 20. Positioning seat; 21. Pressure roller; 22. First leveling roller; 23. Hydraulic shaft; 24. Roller; 25. Limiting plate 26. Second worktable; 27. Drive seat; 28. Output roller; 29. ​​Flattening seat; 30. Second hydraulic rod push rod; 31. Pressure plate; 32. First protective plate; 33. Mounting seat; 34. Auxiliary roller; 35. Positioning shaft; 36. Third worktable; 37. Feed limit plate; 38. Third hydraulic rod push rod; 39. Pressure roller; 40. Discharge limit plate; 41. Fourth worktable; 42. Movable limit plate; 43. Second protective plate; 44. Second leveling wheel; 45. Second rotary positioning seat; 46. Fourth hydraulic rod push rod; 47. Second guide rail; 48. Second push block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 a part of the embodiments of the present invention, not all of them. 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. 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.

[0029] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the invention and simplifying the description, 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 the invention.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific context of the specification.

[0031] This invention provides, for example Figure 1-2 The variable thickness cold rolling mill shown includes an uncoiler 1, an upper coiling device 8 at the lower part of the uncoiler 1, a mill inlet device 2 at the right output end of the uncoiler 1, a main machine device 3 at the right side of the mill inlet device 2, a main drive device 4 at the rear of the main drive device 3, a machine backing device 5 at the right output end of the main drive device 4, a coiler 6 at the output end of the machine backing device 5, a discharge device 7 at the lower part of the coiler 6, a support roll changing device 9 at the right side of the discharge device 7, an oil collection trough 10 connected to the right output end of the support roll changing device 9, a work roll changing device 11 connected to the right output end of the oil collection trough 10, and a top platform 12 at the rear of the support roll changing device 9.

[0032] The uncoiler 1 includes a first worktable 13, inside which is a first rotary positioning seat 14. A first hydraulic rod pusher 15 is provided on the upper part of the first worktable 13. A push plate is installed on the lower part of the first hydraulic rod pusher 15 via a top shaft. The push plate is movably installed corresponding to the position of the first rotary positioning seat 14. The first rotary positioning seat 14 ensures the rotation of the roll material, making the feeding more stable. The first hydraulic rod pusher 15 applies pressure to the push plate to adapt to the roll material with a continuously decreasing diameter.

[0033] The winding device 8 is provided with a first guide rail 16, a drive motor is slidably mounted on the upper part of the first guide rail 16, and a first push block 17 is mounted on the upper part of the drive motor. Sliding rollers 18 are symmetrically arranged on the left and right sides of the upper surface of the first push block 17. The drive motor on the upper part of the first guide rail 16 controls the movement of the first push block 17 so that the roll material enters the interior of the first rotating positioning seat 14. At the same time, the sliding rollers 18 assist in the placement of the roll material.

[0034] The first workbench 13 has a material plate 19 on its right side, and a positioning seat 20 on its right side. Two sets of pressure rollers 21 are symmetrically mounted on the right side of the positioning seat 20. Three sets of first leveling rollers 22 are alternately mounted on the right side of the positioning seat 20. A push rod is mounted on the upper part of the positioning seat 20 corresponding to the pressure rollers 21 and the first leveling rollers 22. A hydraulic shaft 23 is mounted on the upper left side of the pressure rollers 21. A roller 24 is rotatably mounted on the lower part of the hydraulic shaft 23 corresponding to the position of the material plate 19. Two sets of limiting plates 25 are symmetrically mounted on the right side of the positioning seat 20 corresponding to the output port position. The hydraulic shaft 23 restricts the position of the roller 24, allowing it to conform to the curved roll material. Simultaneously, the pressure rollers 21 and the first leveling rollers 22 apply pressure to the roll material, changing its bending curvature and making it easier to process. Figure 3 As shown.

[0035] The mill inlet equipment 2 includes a second workbench 26. A drive seat 27 is located in the middle of the upper surface of the second workbench 26. An output roller 28 is rotatably mounted on the upper part of the drive seat 27. A flattening seat 29 is installed on the upper part of the second workbench 26 corresponding to the position of the output roller 28. A second hydraulic rod pusher 30 is located at the center of the upper part of the flattening seat 29. The output end of the second hydraulic rod pusher 30 passes through the flattening seat 29, and a pressure plate 31 is fixedly installed at the output end of the positioning seat 20. First protective plates 32 are attached to the left and right sides of the second hydraulic rod pusher 30. The drive seat 27 restricts the output roller 28, ensuring the rotation of the output roller 28 while increasing the stress strength of the output roller 28. The second hydraulic rod pusher 30 applies pressure to the pressure plate 31, enabling high-strength flattening of the coil.

[0036] The second workbench 26 has symmetrical mounting seats 33 on its upper surface on both sides. An auxiliary roller 34 is rotatably mounted inside the mounting seat 33 on the upper surface of the second workbench 26. A positioning shaft 35 is rotatably mounted inside the mounting seat 33 corresponding to the auxiliary roller 34. The two sets of auxiliary rollers 34 and positioning shafts 35 limit the movement of the roll material, making it easier for the roll material to enter. Figure 4 As shown.

[0037] The main unit 3 includes a third workbench 36. Feed limiting plates 37 and discharge limiting plates 40 are installed on the left and right sides of the third workbench 36 at corresponding opening positions. Third hydraulic push rods 38 are symmetrically installed inside the third workbench 36. The third hydraulic push rods 38 are controlled by the main drive unit 4. Pressure rollers 39 are installed at the output end of the third hydraulic push rods 38. The feed limiting plates 37 and discharge limiting plates 40 protect the roll material from entering the third workbench 36. The third hydraulic push rods 38 control the two sets of pressure rollers 39 to apply pressure to the roll material, changing its thickness. Figure 4 As shown.

[0038] The machine-mounted device 5 includes a fourth workbench 41. A movable limiting plate 42 is provided on the left side of the upper surface of the fourth workbench 41. A second protective plate 43 is provided on the right side of the movable limiting plate 42. A second leveling wheel 44 is provided on the right side of the second protective plate 43. The movable limiting plate 42 and the second protective plate 43 limit the roll material to prevent it from bending again during the conveying process. At the same time, the second leveling wheel 44 makes the roll material flatter before winding.

[0039] The winding machine 6 includes a base, inside which is a second rotary positioning seat 45, and outside which is a fourth hydraulic push rod 46. A second guide rail 47 is located on the lower front side of the base, and a second push block 48 is slidably mounted on the upper part of the second guide rail 47. The second rotary positioning seat 45 and the fourth hydraulic push rod 46 are used to wind the coil material after the thickness has been changed, and the wound coil material is then removed via the second push block 48. Figure 5 As shown.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0041] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A variable-thickness cold rolling mill comprising an uncoiler (1), characterized in that: The uncoiler (1) lower part is provided with a coil device (8), the uncoiler (1) right side output is provided with rolling mill entrance equipment (2), the rolling mill entrance equipment (2) right side is provided with main machine device (3), the main machine device (3) rear side is installed with main drive device (4), the main drive device (4) right side output is provided with machine rear device (5), the machine rear device (5) output is provided with coiler (6), the coiler (6) lower part is provided with unloading device (7), the unloading device (7) right part is provided with support roller changing roller device (9), the support roller changing roller device (9) right side output is connected with installation oil collecting tank (10), the oil collecting tank (10) right side output is connected with installation work roll changing roller device (11), the support roller changing roller device (9) rear side is provided with top platform (12); The uncoiler (1) includes a first workbench (13), the first workbench (13) is internally provided with a first rotary positioning seat (14), the first workbench (13) is provided with a first hydraulic rod pusher (15) on the upper portion, the first hydraulic rod pusher (15) is provided with a push plate through a top shaft on the lower portion, and the push plate is movably installed corresponding to the position of the first rotary positioning seat (14); The coil device (8) is provided with a first guide rail (16), a driving motor is slidably installed on the upper portion of the first guide rail (16), a first push block (17) is installed on the upper portion of the driving motor, and sliding rollers (18) are symmetrically arranged on the upper surface of the first push block (17) left and right sides; The first workbench (13) is provided with a material plate (19) on the right side, the material plate (19) is provided with a positioning seat (20) on the right side, two groups of pressing wheels (21) are symmetrically installed on the right side inside the positioning seat (20) up and down, three groups of first leveling wheels (22) are alternately installed on the right side inside the positioning seat (20) up and down, and push rods are arranged on the positioning seat (20) corresponding to the pressing wheels (21) and the first leveling wheels (22) on the upper portion. A hydraulic shaft (23) is arranged on the left side of the upper portion of the pressing wheel (21), a roller (24) is rotatably installed on the lower portion of the hydraulic shaft (23) corresponding to the position of the material plate (19), and two groups of limiting plates (25) are symmetrically arranged on the right side of the positioning seat (20) up and down corresponding to the outlet position of the positioning seat (20). The rolling mill entrance equipment (2) includes a second workbench (26), a driving seat (27) is arranged on the upper surface of the second workbench (26) in the middle, an output roller (28) is rotatably installed on the upper portion of the driving seat (27), a pressing seat (29) is installed on the upper portion of the second workbench (26) corresponding to the position of the output roller (28), a second hydraulic rod pusher (30) is arranged on the upper portion of the pressing seat (29) in the center, the second hydraulic rod pusher (30) penetrates the pressing seat (29) on the output end, a pressing plate (31) is fixedly installed on the output end of the positioning seat (20), and first protection plates (32) are attached on the left and right sides of the second hydraulic rod pusher (30). The second workbench (26) upper surface left and right sides symmetrically install mounting seat (33), the second workbench (26) upper surface is located in the inside rotation mounting seat (33) and is rotationally installed auxiliary roller (34), the mounting seat (33) inside corresponds the rotation installation of auxiliary roller (34) and is installed positioning shaft (35); The main machine device (3) includes third workbench (36), the third workbench (36) left and right sides correspond opening position respectively install feeding limiting plate (37) and discharge limiting plate (40), the third workbench (36) inside upper and lower symmetry installs third hydraulic rod push rod (38), third hydraulic rod push rod (38) is controlled through main transmission device (4), the output end of third hydraulic rod push rod (38) is installed pressure roller (39).

2. A variable thickness cold rolling mill as claimed in claim 1, wherein: The machine rear device (5) includes fourth workbench (41), the fourth workbench (41) upper surface left side is provided with movable limiting plate (42), the movable limiting plate (42) right side is provided with second protection plate (43), the second protection plate (43) right side is provided with second leveling wheel (44); The coiling machine (6) includes pedestal, the pedestal inside is provided with second rotary positioning seat (45), the pedestal outside is provided with fourth hydraulic rod push rod (46), the pedestal front side lower part is provided with second guide rail (47), the second guide rail (47) upper part is clamped and is slidably installed second push block (48).

3. A method of variable gauge cold rolling of a variable gauge cold rolling machine according to claim 1, characterized in that: It includes the following steps: S1, feeding leveling: the first push block (17) is pushed into the first rotary positioning seat (14) inside and is limited, the first hydraulic rod push rod (15) controls the push plate and limits the roll material, guarantees that the roll material can be stably opened and sent out, through the cooperation of the material plate (19) and the roller (24), the roll material enters the inside of the positioning seat (20), and the roll material is flattened and sent out through the pressure wheel (21) and the first leveling wheel (22); S2, pre-processing: after the roll material enters the inside of the main machine device (3), the auxiliary roller (34) and the positioning shaft (35) are pressed tightly, the second hydraulic rod push rod (30) pushes the pressure seat (29) to provide pressure, and the output roller (28) is rotated to control the thickness of the roll material, after pressing, another group of auxiliary roller (34) and positioning shaft (35) cooperate to feed the roll material into the inside of the main machine device (3); S3, forming processing: after the roll material completes pre-processing and enters the inside of the main machine device (3), the control of the third hydraulic rod push rod (38) is controlled by the main transmission device (4) to control the pressing of the upper and lower two groups of pressure rollers (39) on the roll material, and the roll material is sent into the inside of the machine rear device (5) to complete the final leveling work, after the limiting protection of the movable limiting plate (42) and the movable limiting plate (42), the roll material is finally leveled in the inside of the second leveling wheel (44), and the roll material is wound by the second rotary positioning seat (45) to complete the material collection work.

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