Leveling device for cold-rolled strip steel production

Abstract

The invention discloses a flattening device for cold-rolled strip steel production, and particularly relates to the technical field of cold-rolled strip steel machining equipment.The flattening device comprises a device base, two first supporting plates are symmetrically fixed to the side, opposite to an assembly line, of the upper end of the device base, and a first rotating rod is jointly rotationally installed between the two second supporting plates; a flattening assembly is jointly arranged on the sides, in the assembly line direction, between the two first supporting plates, and guiding assemblies are arranged on the sides, in the assembly line direction, of the ends, close to each other, of the two first supporting plates. According to the flattening device for cold-rolled strip steel production, the design of the flattening assembly is adopted, so that the situation that normal work of the device is affected due to the fact that the cold-rolled strip steel is pressed to deform due to large downward pressure can be prevented, and the situation that the flattening effect of the device is affected due to the fact that the device cannot flatten concave positions or convex positions of the cold-rolled strip steel can also be prevented; the design of the guide assembly is adopted, manual adjustment or other mechanical structure adjustment is not needed, and operation of the device is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of cold-rolled strip steel processing equipment, and in particular to a flattening device for cold-rolled strip steel production. Background Art

[0002] Driven by domestic market demand, my country's cold-rolled steel industry maintains a steady and rapid growth rate. Cold-rolled steel is generally made of hot-rolled strip steel and steel plate as raw materials, and is rolled into products at room temperature by cold rolling mills. Cold-rolled strip steel has the advantages of smooth surface, flatness, high dimensional accuracy and good mechanical properties. Most of its finished products are in coils. Coiled cold rolling has high production efficiency, is easy to use, and is conducive to subsequent processing. Therefore, it is widely used and has replaced hot-rolled thin plates of the same thickness.

[0003] Chinese patent document CN210676433U proposes a cold-rolled strip leveling device, including a leveling mechanism, a feed leveling machine structure and a coiling mechanism, wherein the coiling mechanism is arranged on one side of the leveling device, and the feed leveling structure is arranged at the inlet and outlet ends of the leveling mechanism; the utility model is provided with a leveling mechanism, a feed leveling machine structure and a coiling mechanism, and the cold-rolled strip is leveled by the cooperation of the upper pressure roller and the lower pressure roller of the leveling mechanism, and the feed leveling mechanism can keep the cold-rolled strip at a level during leveling to improve the leveling quality; the coiling mechanism is provided with a tensioning device and a fixing device for the cold-rolled strip, and the second tensioning roller can be moved by rotating the threaded rod to increase the tension during leveling feeding, and the cold-rolled strip can be fixed when the leveling device is suspended by the setting of the pressure plate and the support plate, so that the staff can perform mid-way trimming operations.

[0004] However, in actual use, the downward pressure of the device when leveling the cold-rolled strip is constant. The device is prone to thinning the thinner cold-rolled strip when leveling it, resulting in material waste. It is prone to not being able to flatten the thicker cold-rolled strip when leveling it, thereby affecting the leveling effect of the device and making the device unsuitable for cold-rolled strips of different thicknesses. In addition, the device cannot clamp the plate-shaped cold-rolled strip when transmitting it, and the plate-shaped cold-rolled strip is prone to deformation when colliding with the side wall of the device, thereby causing material waste. Summary of the invention

[0005] The main purpose of the present invention is to provide a flattening device for cold-rolled strip production, which can effectively solve the problem that the device cannot be applied to cold-rolled strips of different thicknesses and the plate-shaped cold-rolled strip is easily deformed when colliding with the side wall of the device.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The camming device of claim 1, wherein the two guide wheels are pivotally connected to each other with a bolt, and the bolt has a round shank to contact with the two guide wheels, wherein the two guide wheels are pivotally connected to each other with a bolt, and the bolt has a round shank to contact with the two guide wheels.

[0008] Preferably, the leveling assembly includes two mounting plates 1 fixedly mounted on ends of two support plates 1 close to each other, a plurality of leveling rollers 1 are mounted and rotatably installed between the two mounting plates 1, a lower pressure plate is slidably installed on the ends of the two support plates 1 close to each other, a support rod 2 that penetrates upwardly through the lower pressure plate is slidably installed on the lower end of the lower pressure plate, a mounting plate 2 is fixed to the lower ends of the two support rods 2, a plurality of leveling rollers 2 that are compatible with the leveling roller 1 are mounted and rotatably installed between the two mounting plates 2, a plurality of support blocks are fixed to the outer surfaces of the plurality of support rods 2, a reset spring 2 is fixed between the plurality of support blocks and the lower pressure plate, and transmission is performed between the lower pressure plate and the support plate four via a transmission assembly 1.

[0009] Preferably, the transmission assembly 1 includes a rack 1 fixed to the upper end of the support plate 4, a gear 1 meshing with the rack 1 is rotatably mounted on one end of the support plate 1, a rack 2 is also fixed to the upper end of the return spring 2, a gear 2 meshing with the rack 2 is also rotatably mounted on one end of the support plate 1, and the gear 2 is connected to the gear 1 by a belt.

[0010] Preferably, the gear 2 is connected to the gear 1 via a belt.

[0011] Preferably, when the rack 1 moves upward, the rack 2 moves downward, and when the rack 1 moves downward, the rack 2 moves upward.

[0012] Preferably, the guide assembly includes an adjustable telescopic rod fixedly connected to the support plate, an L-shaped bracket is fixedly installed on the output end of the adjustable telescopic rod, a truncated cone-shaped limit block is fixedly installed on the upper end of the vertical portion of the L-shaped bracket, a hollow tube is fixed on the upper end of the truncated cone-shaped limit block, a mounting groove extending to the inside of the L-shaped bracket is opened on the upper end of the truncated cone-shaped limit block, a threaded rod is rotatably installed on the bottom surface of the inner cavity of the mounting groove, an extension rod slidably connected to the mounting groove is threadedly installed on the outer surface of the threaded rod, a truncated cone-shaped limit block 2 adapted to the truncated cone-shaped limit block 1 is fixed on the upper end of the extension rod, and a transmission assembly 2 for driving the threaded rod to rotate is also provided on the upper end of the adjustable telescopic rod.

[0013] Preferably, the second transmission assembly comprises a bevel gear set mounted on the upper end of the adjustable telescopic rod, and a tensioner is also fixed to the upper end of the adjustable telescopic rod.

[0014] Preferably, the bevel gear set is composed of two mutually meshing bevel gears, the bevel gear in the vertical portion is connected to the second gear via a belt, and the bevel gear in the horizontal portion is connected to the tensioner and the threaded rod via a belt.

[0015] Preferably, when the rack moves upward, the extension rod also moves upward.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adopts the design of a leveling component. Through the mutual cooperation between the rack two and the rack one, the device can adjust the compression degree of the reset spring two according to the thickness of the cold-rolled strip. At the same time, the downward pressure of the device on the cold-rolled strip can also be changed, which can prevent the cold-rolled strip from being deformed due to the large downward pressure, thereby affecting the normal operation of the device, while reducing the waste of materials. It can also provide a large downward pressure when leveling thicker cold-rolled strips, which can prevent the device from being unable to flatten the concave or convex parts of the cold-rolled strip, thereby affecting the leveling effect of the device.

[0018] 2. The present invention adopts the design of a guiding component, and through the mutual cooperation between the truncated cone limit block 1 and the truncated cone limit block 2, the plate-shaped cold-rolled steel strip will not be tilted during the transmission process, and will not contact the support plate 1 to cause the plate-shaped cold-rolled steel strip to deform. At the same time, the design of the mutual cooperation between the extension rod and the threaded rod makes it possible for the device to adjust the distance between the truncated cone limit block 1 and the truncated cone limit block 2 according to the different thicknesses of the cold-rolled steel strip when in use, so that the device can be suitable for cold-rolled steel strips of different thicknesses. At the same time, through the mutual connection between the gear 2 and the bevel gear set, the device can be automatically adjusted without the need for manual or other mechanical structure adjustments, thereby facilitating the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 is a cross-sectional view of the device of the present invention;

[0022] Figure 4 For the present invention Figure 3 Enlarged view of point C in the middle;

[0023] Figure 5 For the present invention Figure 3 The enlarged view of point D in the middle;

[0024] Figure 6 It is a structural schematic diagram of the guide assembly of the present invention;

[0025] Figure 7 For the present invention Figure 1 The enlarged view of point B in the middle;

[0026] Figure 8 A plan view of the device of the present invention Figure 1 ;

[0027] Fig. 9 A plan view of the device of the present invention Figure 2 ;

[0028] Fig.10 It is a cross-sectional view of the device of the present invention when it is working.

[0029] In the figure: 1, device base; 2, leveling assembly; 3, guide assembly; 11, support plate 1; 12, support plate 2; 13, rotating rod 1; 14, support plate 3; 15, support rod 1; 16, support plate 4; 17, return spring 1; 18, rotating rod 2; 21, mounting plate 1; 22, leveling roller 1; 23, lower pressure plate; 24, support rod 2; 25, mounting plate 2; 26, leveling roller 2; 27, support Support block; 28. Reset spring 2; 29. ​​Transmission assembly 1; 291. Rack 1; 292. Gear 1; 293. Rack 2; 294. Gear 2; 31. Adjustable telescopic rod; 32. L-shaped bracket; 33. Cone-shaped limit block 1; 34. Hollow tube; 36. Threaded rod; 37. Extension rod; 38. Cone-shaped limit block 2; 39. Transmission assembly 2; 391. Bevel gear set; 392. Tensioner. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1

[0032] like Figure 1 and Figure 2 As shown, a leveling device for cold-rolled strip production includes a device base 1, two support plates 11 are symmetrically fixed on one side of the upper end of the device base 1 against the flow line, and support plates 12 are fixed on one side of the counterflow line at one end of the two support plates 11 that are close to each other, and a rotating rod 13 is installed between the two support plates 12 for common rotation. When the cold-rolled strip needs to be leveled, the cold-rolled strip is placed on the rotating rod 13. Due to the design of the rotating rod 13 and the support plate 12 being rotatably connected, the rotating rod 13 can rotate when the cold-rolled strip moves on one side in the direction of the flow line, thereby preventing the rotating rod 13 from generating a large friction between the rotating rod 13 and the cold-rolled strip, thereby causing wear to the cold-rolled strip.

[0033] In addition, if Figure 2 As shown, a support plate three 14 is fixed to one end of the two support plates 11 close to each other, and two support rods 15 that penetrate upward through the support plate three 14 are slidably installed on the lower ends of the two support plates three 14. A support plate four 16 is fixedly installed on the lower ends of the two support rods 15 located in the same group. A return spring 17 that is sleeved on the outer surface of the support rod 1 15 is fixed between the support plate four 16 and the support plate three 14, and a rotating rod two 18 is rotatably installed between the two support plates four 16.

[0034] Among them, the rotating rod 13 and the rotating rod 2 18 cooperate with each other. When the cold-rolled strip to be flattened passes between the rotating rod 13 and the rotating rod 2 18, due to the design of the reset spring 17, the rotating rod 2 18 can always be in contact with the cold-rolled strip. A flattening component 2 is provided on the side along the waterline direction between the two support plates 11. The flattening component 2 can enable the device to provide different extrusion forces according to the cold-rolled strips of different thicknesses when in use, so as to prevent the device from thinning the cold-rolled strip when flattening the cold-rolled strip, thereby affecting the normal operation of the device. At the same time, it can also enable the device to be suitable for cold-rolled strips of different thicknesses. A guide component 3 is provided on the side along the waterline direction at one end of the two support plates 11 that are close to each other.

[0035] Furthermore, in order to enable the device to provide different extrusion forces according to the cold-rolled steel strips of different thicknesses when in use, to prevent the device from thinning the cold-rolled steel strips when flattening the cold-rolled steel strips, thereby affecting the normal operation of the device, and at the same time, to enable the device to be applicable to cold-rolled steel strips of different thicknesses, such as Figure 3 and Figure 4As shown, the leveling assembly 2 includes two mounting plates 21 fixedly mounted on one end of two support plates 11 close to each other, and a plurality of leveling rollers 22 are mounted between the two mounting plates 21 for common rotation. When the cold-rolled strip needs to be leveled, the cold-rolled strip is located above the leveling roller 22 when passing through, and the leveling roller 22 can level the lower part of the cold-rolled strip. A lower pressure plate 23 is slidably mounted on one end of the two support plates 11 close to each other, and a support rod 24 slidably mounted on the lower end of the lower pressure plate 23 and penetrating upwardly through the lower pressure plate 23.

[0036] In addition, a mounting plate 25 is fixed to the lower ends of the two support rods 24, and a plurality of leveling rollers 26 adapted to the leveling roller 1 22 are rotatably mounted between the two mounting plates 25. The leveling roller 1 22 cooperates with the leveling roller 26 so that the cold-rolled strip can be pressed flat when passing between the leveling roller 26 and the leveling roller 1 22. Support blocks 27 are fixed to the outer surfaces of the plurality of support rods 24, and return springs 28 are fixed between the plurality of support blocks 27 and the lower pressure plate 23, wherein the return springs 28 can be compressed or released when the lower pressure plate 23 moves up and down. , so that the downward pressure of the mounting plate 25 will change, and further the device can provide different downward pressures for cold-rolled strips of different thicknesses, and provide a smaller downward pressure when flattening a thinner cold-rolled strip, which can prevent the cold-rolled strip from being deformed by a larger downward pressure, thereby affecting the normal operation of the device, and at the same time reducing material waste, and providing a larger downward pressure when flattening a thicker cold-rolled strip, which can prevent the device from being unable to flatten the concave or convex parts of the cold-rolled strip, thereby affecting the flattening effect of the device. The transmission is carried out between the lower pressure plate 23 and the support plate 4 16 through a transmission component 1 29.

[0037] Furthermore, when the support plate 416 moves upward, the return spring 28 will be contracted, thereby increasing the squeezing force of the leveling roller 26 on the cold-rolled strip. Figure 3 and Figure 5 As shown, the transmission assembly 29 includes a rack 291 fixed to the upper end of the support plate 16, a gear 292 meshing with the rack 291 is rotatably mounted on one end of the support plate 11, a rack 293 is also fixed to the upper end of the return spring 28, a gear 294 meshing with the rack 293 is also rotatably mounted on one end of the support plate 11, and the gear 294 is connected to the gear 292 by a belt.

[0038] In addition, if Figure 8 and Fig. 9As shown, when rack 1 291 moves upward, rack 2 293 moves downward, and when rack 1 291 moves downward, rack 2 293 moves upward. When the cold-rolled strip is thicker, due to the design of the mutual cooperation between the return spring 17 and the support plate 3 14 and the support plate 4 16, the support plate 4 16 can move upward, and further move the rack 1 291 upward. At the same time, the gear 1 292 cooperates with the gear 2 294 to move the rack 2 293 downward, and further compress the return spring 2 28, so that the leveling roller 2 26 can provide a larger downward pressure on the cold-rolled strip, and can level the concave or convex parts of the cold-rolled strip.

[0039] When the cold-rolled strip is thinner, due to the design of the mutual cooperation between the return spring 17 and the support plate three 14 and the support plate four 16, the support plate four 16 can move downward, and further release the return spring two 28, so that the smoothing roller two 26 can provide a smaller downward pressure on the cold-rolled strip, thereby preventing the smoothing roller two 26 and the smoothing roller one 22 from thinning the cold-rolled strip when smoothing the cold-rolled strip, thereby causing material waste.

[0040] The specific implementation of this embodiment is as follows: when the cold-rolled steel strip needs to be leveled, the cold-rolled steel strip is placed on the rotating rod 13, and then the mutual cooperation between the reset spring 17 and the support plate 4 16 makes the outer surface of the rotating rod 2 18 contact the upper part of the cold-rolled steel strip, so that the thickness of the cold-rolled steel strip can be detected. When the cold-rolled steel strip is thicker, the rack 1 291 moves upward, and the mutual cooperation between the gear 1 292 and the gear 2 294 allows the rack 2 293 to move downward. When the cold-rolled steel strip is thinner, the rack 1 291 moves downward, and the mutual cooperation between the gear 1 292 and the gear 2 294 allows the rack 2 293 to move upward.

[0041] When the rack 293 moves downward, the reset spring 28 can be compressed, further increasing the downward pressure on the mounting plate 25, thereby increasing the downward pressure on the leveling roller 26, allowing the device to level thicker cold-rolled strips. When the rack 293 moves upward, the reset spring 28 can be released, further reducing the downward pressure on the mounting plate 25, thereby reducing the downward pressure on the leveling roller 26, preventing the cold-rolled strip from being deformed due to the large downward pressure, thereby affecting the normal operation of the device and reducing material waste.

[0042] Embodiment 2

[0043] This embodiment further improves the guide assembly 3 on the basis of the first embodiment, so that the device can limit the position of the plate-shaped cold-rolled steel strip when in use.

[0044] like Figure 6 and Figure 7 As shown, the guide assembly 3 includes an adjustable telescopic rod 31 fixedly connected to the support plate 11, an L-shaped bracket 32 ​​is fixedly installed on the output end of the adjustable telescopic rod 31, a truncated cone-shaped limit block 33 is fixedly installed on the upper end of the vertical portion of the L-shaped bracket 32, a hollow tube 34 is fixed on the upper end of the truncated cone-shaped limit block 33, a mounting groove extending to the inside of the L-shaped bracket 32 ​​is opened on the upper end of the truncated cone-shaped limit block 33, a threaded rod 36 is rotatably installed on the bottom surface of the inner cavity of the mounting groove, and an extension rod 37 slidably connected to the mounting groove is threadedly installed on the outer surface of the threaded rod 36, and the threaded rod 36 cooperates with the extension rod 37 to make the threaded rod 3 When the extension rod 37 is rotated, it can slide up and down in the installation groove, wherein the hollow tube 34 can prevent the extension rod 37 from contacting the cold-rolled steel strip. When the cold-rolled steel strip is thin, the bottom surface of the truncated cone-shaped limit block 38 can contact the top surface of the hollow tube 34, so that the side wall of the extension rod 37 will not contact the cold-rolled steel strip, which can reduce the friction between the cold-rolled steel strip and the extension rod 37 and reduce the wear of the cold-rolled steel strip. When the cold-rolled steel strip is thick, due to the design of the hollow tube 34, the side wall of the cold-rolled steel strip will not contact the extension rod 37, which can also reduce the wear of the cold-rolled steel strip.

[0045] In addition, a truncated cone limit block 2 38 compatible with the truncated cone limit block 1 33 is rotatably installed on the upper end of the extension rod 37. The truncated cone limit block 1 33 cooperates with the truncated cone limit block 2 38 to support the cold-rolled strip and clamp the plate-shaped cold-rolled strip. When the device flattens the plate-shaped cold-rolled strip, it can limit the cold-rolled strip to prevent the cold-rolled strip from tilting during the transmission process and affecting the normal operation of the device. A transmission component 2 39 for driving the threaded rod 36 to rotate is also provided on the upper end of the adjustable telescopic rod 31. When the rack 1 291 moves upward, the extension rod 37 also moves upward, so that the distance between the truncated cone limit block 1 33 and the truncated cone limit block 2 38 will also change.

[0046] like Figure 7 As shown, the transmission component 2 39 includes a bevel gear set 391 installed on the upper end of the adjustable telescopic rod 31. The bevel gear set 391 is composed of two bevel gears meshing with each other. The bevel gear in the vertical part is connected to the gear 2 294 by a belt. At the same time, since the adjustable telescopic rod 31 can be telescopically designed, the distance between the threaded rod 36 and the bevel gear set 391 will change. A tensioner 392 is also fixed to the upper end of the adjustable telescopic rod 31, and the bevel gear in the horizontal part is connected to the tensioner 392 and the threaded rod 36 by a belt.

[0047] The specific implementation of this embodiment is as follows: when the device is in use, the length of the output end of the adjustable telescopic rod 31 is adjusted according to the width of the cold-rolled steel strip. Due to the design of the tensioner 392, the bevel gear set 391 can drive the threaded rod 36 to rotate when it rotates. The two truncated cone-shaped limit blocks 1 33 and the two truncated cone-shaped limit blocks 2 38 cooperate with each other, so that when the device is in use, the cold-rolled steel strip can be kept parallel to the two support plates 1 11 during the transmission process, preventing the plate-shaped cold-rolled steel strip from tilting during the transmission process, causing the cold-rolled steel strip to contact the support plate 1 11, thereby causing the cold-rolled steel strip to deform, affecting the normal operation of the device, and also easily causing material waste;

[0048] At the same time, when gear 294 rotates, it will also drive the bevel gear to rotate, further causing the leveling roller 26 to rotate, thereby allowing the support block 27 to move up or down, so that the device can be adjusted according to different thicknesses of cold-rolled strip steel, facilitating the operation of the device.

[0049] It should be noted that the specific installation methods and control methods of the leveling roller, the adjustable telescopic rod 31 and the tensioner 392 in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A flattening device for cold-rolled strip production, comprising a device base (1), characterized in that: Two support plates (11) are symmetrically fixed on one side of the upstream waterline at the upper end of the device base (1); support plates (12) are fixed on one side of the upstream waterline at the ends of the two support plates (11) that are close to each other; a rotating rod (13) is rotatably mounted between the two support plates (12); a support plate (14) is fixed above the ends of the two support plates (11) that are close to each other; and two support rods (15) that are slidably mounted on the lower ends of the two support plates (14) and penetrate upward through the support plates (14). , the lower ends of the two support rods (15) in the same group are fixedly mounted with support plates (16), a return spring (17) sleeved on the outer surface of the support rod (15) is fixed between the support plate (16) and the support plate (14), a rotating rod (18) is rotatably mounted between the two support plates (16), a leveling component (2) is commonly provided on one side along the waterline direction between the two support plates (11), and a guide component (3) is commonly provided on one side along the waterline direction at one end of the two support plates (11) close to each other.

2. A flattening device for cold-rolled strip production according to claim 1, characterized in that: The leveling assembly (2) comprises two mounting plates (21) fixedly mounted on the ends of the two support plates (11) close to each other, a plurality of leveling rollers (22) are mounted between the two mounting plates (21) for common rotation, a lower pressing plate (23) is slidably mounted on the ends of the two support plates (11) close to each other, a support rod (24) is slidably mounted on the lower end of the lower pressing plate (23) and passes through the lower pressing plate (23) upward, and the two support rods (24) are mounted at the lower ends. A mounting plate 2 (25) is commonly fixed at the two ends, and a plurality of leveling rollers 2 (26) adapted to the leveling roller 1 (22) are rotatably mounted between the two mounting plates 2 (25), and a plurality of support blocks (27) are fixed on the outer surfaces of the plurality of support rods 2 (24), and a return spring 2 (28) is fixed between the plurality of support blocks (27) and the lower pressure plate (23), and transmission is performed between the lower pressure plate (23) and the support plate 4 (16) via a transmission component 1 (29).

3. A flattening device for cold-rolled strip production according to claim 2, characterized in that: The transmission assembly 1 (29) includes a rack 1 (291) fixed to the upper end of the support plate 4 (16); one end of the support plate 1 (11) is rotatably mounted with a gear 1 (292) meshing with the rack 1 (291); the upper end of the return spring 2 (28) is also fixed with a rack 2 (293); one end of the support plate 1 (11) is also rotatably mounted with a gear 2 (294) meshing with the rack 2 (293); the gear 2 (294) is connected to the gear 1 (292) via a belt.

4. A flattening device for cold-rolled strip production according to claim 3, characterized in that: The gear 2 (294) is connected to the gear 1 (292) via a belt.

5. The flattening device for cold-rolled strip production according to claim 3, characterized in that: When the rack one (291) moves upward, the rack two (293) moves downward, and when the rack one (291) moves downward, the rack two (293) moves upward.

6. A flattening device for cold-rolled strip production according to claim 3, characterized in that: The guide assembly (3) comprises an adjustable telescopic rod (31) fixedly connected to the support plate (11); an L-shaped bracket (32) is fixedly installed on the output end of the adjustable telescopic rod (31); a truncated cone-shaped limit block (33) is fixedly installed on the upper end of the vertical portion of the L-shaped bracket (32); a hollow tube (34) is fixedly installed on the upper end of the truncated cone-shaped limit block (33); a mounting groove extending to the inside of the L-shaped bracket (32) is provided on the upper end of the truncated cone-shaped limit block (33); a threaded rod (36) is rotatably installed on the bottom surface of the inner cavity of the mounting groove; an extension rod (37) slidably connected to the mounting groove is threadedly installed on the outer surface of the threaded rod (36); a truncated cone-shaped limit block (38) adapted to the truncated cone-shaped limit block (33) is fixed on the upper end of the extension rod (37); and a transmission assembly (39) for driving the threaded rod (36) to rotate is also provided on the upper end of the adjustable telescopic rod (31).

7. A flattening device for cold-rolled strip production according to claim 6, characterized in that: The second transmission assembly (39) comprises a bevel gear set (391) mounted on the upper end of the adjustable telescopic rod (31), and a tensioner (392) is also fixed on the upper end of the adjustable telescopic rod (31).

8. A flattening device for cold-rolled strip production according to claim 6, characterized in that: The bevel gear set (391) is composed of two mutually meshing bevel gears. The vertical bevel gear is connected to the second gear (294) via a belt, and the horizontal bevel gear is connected to the tensioner (392) and the threaded rod (36) via a belt.

9. A flattening device for cold-rolled strip production according to claim 6, characterized in that: When the rack 1 (291) moves upward, the extension rod (37) also moves upward.

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