Cold-rolled sheet straightening device

Abstract

The application discloses a cold-rolled plate straightening device, which comprises a rack, a driving assembly, a straightening roller assembly and a discharging assembly. The driving assembly and the straightening roller assembly are arranged on the rack respectively, and the driving assembly is connected with the straightening roller assembly. The discharging assembly comprises a supporting frame, a carrying frame, a conveying mechanism, a driving mechanism and a knocking mechanism. The supporting frame and the carrying frame are fixedly arranged on one side of the rack respectively, and are arranged on the side close to the discharging port of the straightening roller assembly. The carrying frame is located above the supporting frame. The conveying mechanism is arranged on the supporting frame, and the knocking mechanism is arranged on the conveying mechanism. The driving mechanism is arranged on the supporting frame and connected with the conveying mechanism and the knocking mechanism respectively. Thus, the internal stress of the plate can be further released and redistributed, so that the uneven stress distribution problem caused by the existing straightening machine can be effectively improved, and the size precision and the material mechanical properties of the subsequent processing of the cold-rolled plate are improved, and the service life of the cold-rolled plate is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of cold-rolled sheet processing, and more particularly to a cold-rolled sheet straightening device. Background Technology

[0002] Cold-rolled sheet is a sheet material made by rolling hot-rolled coils at room temperature. During the production process of cold-rolled sheet, various shape defects such as wavy, wavy, and sickle-shaped bends often occur due to the influence of rolling technology, equipment precision, and subsequent transportation and storage. These shape defects not only affect the appearance quality of cold-rolled sheet, but also affect its subsequent processing and use.

[0003] In related technologies, straightening machines are typically used to straighten cold-rolled sheets. Existing cold-rolled sheet straightening machines mainly consist of a frame, a drive assembly, and a straightening roller assembly. During operation, the drive assembly drives the straightening rollers to rotate, feeding the cold-rolled sheet into the roller space. The straightening rollers apply pressure, causing the sheet to bend repeatedly, producing plastic deformation in different directions. This makes the fibers, which were originally of different lengths, tend to be uniform, gradually eliminating sheet shape defects and achieving straightening.

[0004] However, existing straightening machines generally suffer from uneven stress distribution after straightening cold-rolled sheets. This is because it is difficult to achieve absolutely uniform pressure applied to the sheet by the straightening rollers during the straightening process. On the one hand, the manufacturing and installation precision of the straightening rollers themselves are limited, which may lead to deviations in pressure between the rollers. On the other hand, the internal structure of the cold-rolled sheet may vary during the production process, with some areas having different hardness and toughness than others. When subjected to the pressure of the straightening rollers, the degree of deformation and stress response of these different areas will also be different, resulting in uneven stress distribution. Uneven stress can cause the cold-rolled sheet to deform due to stress release during subsequent processing (such as cutting and drilling), causing dimensional deviations. In addition, it will also reduce the mechanical properties of the material. Stress concentration causes premature plastic deformation in some areas, reducing strength and toughness, making it prone to breakage when subjected to impact or tension, thus shortening the service life of the cold-rolled sheet. Summary of the Invention

[0005] This application aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, one objective of this application is to provide a cold-rolled sheet straightening device that can intermittently and repeatedly strike the surface of the cold-rolled sheet during the blanking process, thereby promoting the further release and redistribution of internal stress in the sheet, effectively improving the problem of uneven stress distribution caused by existing straightening machines, thereby improving the dimensional accuracy and mechanical properties of the cold-rolled sheet in subsequent processing, and extending the service life of the cold-rolled sheet.

[0007] To achieve the above objectives, a first aspect of this application provides a cold-rolled sheet straightening device, including a frame, a drive assembly, a straightening roller assembly, and a feeding assembly. The drive assembly and the straightening roller assembly are respectively mounted on the frame, and the drive assembly is connected to the straightening roller assembly. The feeding assembly includes a support frame, a carrying frame, a conveying mechanism, a drive mechanism, and a striking mechanism. The support frame and the carrying frame are respectively fixedly mounted on one side of the frame, and are respectively positioned near the discharge port of the straightening roller assembly, with the carrying frame located above the support frame. The conveying mechanism is mounted on the support frame, and the striking mechanism is mounted on the conveying mechanism. The drive mechanism is mounted on the support frame and is connected to both the conveying mechanism and the striking mechanism.

[0008] The cold-rolled sheet straightening device of this application embodiment can intermittently and repeatedly strike the surface of the cold-rolled sheet during the blanking process, thereby promoting the further release and redistribution of the internal stress of the sheet, effectively improving the problem of uneven stress distribution caused by existing straightening machines, thereby improving the dimensional accuracy and material mechanical properties of the cold-rolled sheet in subsequent processing, and extending the service life of the cold-rolled sheet.

[0009] In addition, the cold-rolled sheet straightening device proposed in this application may also have the following additional technical features: In one embodiment of this application, the shelf is in the shape of a rectangular frame.

[0010] In one embodiment of this application, the conveying mechanism includes two rotating rods, two connecting rods, a movable frame, and multiple conveying plates. The two rotating rods are rotatably mounted on the support frame, perpendicular to the support frame, and on the same horizontal plane. The two connecting rods are respectively sleeved on the two rotating rods, corresponding one-to-one. One end of each connecting rod is rotatably connected to the movable frame via a rotating member, which is perpendicularly positioned between the rotating rod and the movable frame. The multiple conveying plates are fixedly connected to the movable frame, their tops on the same horizontal plane, and each conveying plate is located within the frame of the carrying rack.

[0011] In one embodiment of this application, the striking mechanism includes a fixed frame, a movable plate, multiple electrically operated telescopic rods, multiple striking heads, and two sliding rods. The fixed frame is fixedly connected to the movable frame and is located above the shelf. The movable plate is slidably connected to the fixed frame via a linear slide rail and is located directly above the shelf frame. The fixed ends of the multiple electrically operated telescopic rods are fixedly connected to the bottom of the movable plate. The multiple striking heads are fixedly connected to the movable ends of the multiple electrically operated telescopic rods, and each striking head corresponds to one of the multiple electrically operated telescopic rods. One end of each of the two sliding rods is fixedly connected to the movable plate.

[0012] In one embodiment of this application, the driving mechanism includes a drive motor, a first transmission belt, and a second transmission belt, wherein the first transmission belt is driven on two of the rotating rods via pulleys; the drive motor is fixedly mounted on the support frame, and the second transmission belt is driven on the output shaft of the drive motor and one of the rotating rods via pulleys.

[0013] In one embodiment of this application, the driving mechanism further includes two sector plates and two ball bearings. The two sector plates are respectively fixedly disposed on the ends of the two connecting rods away from the rotating member, and the arc-shaped surfaces of the sector plates are disposed away from the rotating member. The arc-shaped surfaces of the two sector plates are respectively configured as wavy, and the two ball bearings are respectively rolled at the bottom ends of the two sliding rods. The sliding rods are slidably connected to the arc-shaped surfaces of the sector plates through the ball bearings, and are used to convert the motion of the movable frame into the reciprocating lifting motion of the movable plate when the movable frame moves downward.

[0014] In one embodiment of this application, the striking mechanism further includes a plurality of springs, which are respectively disposed between the top of the movable plate and the top of the inner wall of the fixed frame, and the two ends of the plurality of springs are respectively fixedly connected to the movable plate and the fixed frame.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: 1. Improved stress distribution: This application, through a unique blanking component design, especially the hammering mechanism, can intermittently and repeatedly hammer the surface of the cold-rolled sheet during the blanking process, thereby promoting the further release and redistribution of internal stress in the sheet, effectively improving the uneven stress distribution caused by existing straightening machines, thereby improving the dimensional accuracy and mechanical properties of the cold-rolled sheet in subsequent processing, and extending the service life of the cold-rolled sheet.

[0016] 2. Integrated functions to improve production efficiency: This application integrates straightening and stress treatment functions into one unit, which further improves the quality of cold-rolled sheets without adding too many equipment and processes. Compared with the equipment in the prior art that only completes the basic straightening function, this device solves the problem of sheet shape defects and improves stress distribution in the same production process, which greatly improves production efficiency, reduces production costs, and meets the market's demand for high-quality cold-rolled sheets with high efficiency.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of a cold-rolled sheet straightening device according to an embodiment of this application; Figure 2 This is a schematic diagram of the feeding assembly of a cold-rolled sheet straightening device according to an embodiment of this application; Figure 3 This is a right-side structural schematic diagram of the feeding assembly of a cold-rolled sheet straightening device according to an embodiment of this application; Figure 4 This is a front cross-sectional view of the feeding assembly of a cold-rolled sheet straightening device according to an embodiment of this application; Figure 5 This is a front view of the feeding assembly of a cold-rolled sheet straightening apparatus according to an embodiment of this application.

[0019] As shown in the figure: 1. Platform; 2. Drive assembly; 3. Straightening roller assembly; 4. Feeding assembly; 41. Support frame; 42. Carrier frame; 43. Conveying mechanism; 431. Rotating rod; 432. Connecting rod; 433. Movable frame; 434. Conveying plate; 444. Drive mechanism; 441. Drive motor; 442. First transmission belt; 443. Second transmission belt; 444. Sector plate; 445. Ball bearing; 45. Striking mechanism; 451. Fixed frame; 452. Movable plate; 453. Electric telescopic rod; 454. Striking head; 455. Sliding rod; 456. Spring. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0021] The cold-rolled sheet straightening device of this application embodiment will now be described with reference to the accompanying drawings.

[0022] like Figures 1-5 As shown, the cold-rolled steel plate straightening device of this application embodiment may include a frame 1, a drive assembly 2, a straightening roller assembly 3, and a feeding assembly 4.

[0023] The drive assembly 2 and the straightening roller assembly 3 are respectively mounted on the frame 1, and the drive assembly 2 is connected to the straightening roller assembly 3.

[0024] It should be noted that the frame 1 described in this embodiment serves as the basic support component of the entire cold-rolled steel plate straightening device. It is typically composed of multiple crossbeams and longitudinal beams connected to form a frame structure. These crossbeams and longitudinal beams are generally made of high-strength steel to ensure sufficient strength and stability to bear the weight of other components and the forces generated during operation. The bottom of the frame 1 may also be equipped with support feet, which may have adjustable bolts to allow for fine-tuning according to the flatness of the ground during installation, ensuring that the frame 1 is in a horizontal state. The frame 1 provides the mounting base for the drive assembly 2 and the straightening roller assembly 3. The drive assembly 2 is fixed to the frame 1 by bolts, welding, or other mechanical connections to ensure that the drive assembly 2 will not shift during operation. The straightening roller assembly 3 is also installed on the frame 1 by suitable connectors and maintains a precise relative positional relationship with the drive assembly 2 to ensure effective power transmission and normal straightening operation. The unloading assembly 4 is also fixed to one side of the frame 1, making all parts of the entire device form a whole.

[0025] As one possible scenario, the straightening roller assembly 3 described in this embodiment may include an upper straightening roller group (not specifically identified in the figure), a lower straightening roller group (not specifically identified in the figure), and a roller frame (not specifically identified in the figure). Both the upper and lower straightening roller groups consist of multiple straightening rollers arranged in parallel. These straightening rollers are typically made of high-quality alloy steel, and their surfaces are precision machined and heat-treated to improve their hardness, wear resistance, and fatigue resistance. The roller frame is used to support and fix the upper and lower straightening roller groups. It is typically welded from high-strength steel plates and has sufficient rigidity and stability. The roller shafts of the upper straightening roller group are mounted on the upper part of the roller frame via bearings, and the roller shafts of the lower straightening roller group are mounted on the lower part of the roller frame via bearings. The roller shafts of the upper and lower straightening roller groups are parallel to each other and arranged in an alternating manner.

[0026] When the drive assembly 2 transmits power to the rollers of the straightening roller group, the straightening rollers begin to rotate. At this time, the cold-rolled sheet to be straightened is fed into the gap between the upper and lower straightening roller groups. As the upper and lower straightening rollers are arranged alternately, the cold-rolled sheet is subjected to alternating bending forces when passing through the rollers. During this process, the originally uneven sheet fibers will gradually become more uniform, and the sheet will undergo plastic deformation, thereby gradually eliminating sheet shape defects such as wavy, wavy, and sickle-shaped bends, thus achieving the straightening of the cold-rolled sheet.

[0027] As another possible scenario, the straightening roller assembly 3 described in this embodiment may also include a lifting adjustment mechanism (not shown in the figure). The lifting adjustment mechanism may include a screw, a nut seat, and an adjustment motor. The screw is vertically mounted on the frame 1, the nut seat is threadedly engaged with the screw, and the nut seat is fixedly connected to the roller frame of the upper straightening roller group. The adjustment motor is driven by the screw. By adjusting the motor, the screw is driven to rotate, causing the nut seat to drive the upper straightening roller group to rise and fall, so as to adapt to the straightening requirements of cold-rolled plates of different thicknesses by adjusting the gap between the upper and lower straightening roller groups.

[0028] The feeding assembly 4 may include a support frame 41, a carrier frame 42, a conveying mechanism 43, a driving mechanism 44, and a striking mechanism 45.

[0029] The support frame 41 and the carrier frame 42 are respectively fixedly installed on one side of the platform 1. The support frame 41 and the carrier frame 42 are respectively installed on the side near the discharge port of the straightening roller assembly 3, and the carrier frame 42 is located above the support frame 41. The conveying mechanism 43 is installed on the support frame 41, the striking mechanism 45 is installed on the conveying mechanism 43, and the driving mechanism 44 is installed on the support frame 41. The driving mechanism 44 is connected to the conveying mechanism 43 and the striking mechanism 45 respectively.

[0030] It should be noted that the shelf 42 described in this embodiment is in the shape of a rectangular frame.

[0031] In one embodiment of this application, the conveying mechanism 43 may include two rotating rods 431, two connecting rods 432, a movable frame 433, and a plurality of conveying plates 434.

[0032] Two rotating rods 431 are rotatably mounted on the support frame 41, and are perpendicular to the support frame 41 and on the same horizontal plane. Two connecting rods 432 are sleeved on the two rotating rods 431, and correspond one-to-one with the two rotating rods 431. One end of each connecting rod 432 is rotatably connected to the movable frame 433 through a rotating component, which is vertically mounted between the rotating rods 431 and the movable frame 433. Multiple conveyor plates 434 are fixedly connected to the movable frame 433, and the tops of the multiple conveyor plates 434 are on the same horizontal plane and are located within the frame of the carrying rack 42.

[0033] In one embodiment of this application, the striking mechanism 45 may include a fixed frame 451, a movable plate 452, a plurality of electrically telescopic rods 453, a plurality of striking heads 454, and two sliding rods 455.

[0034] The fixed frame 451 is fixedly connected to the movable frame 433, and the fixed frame 451 is located above the shelf 42. The movable plate 452 is slidably connected to the fixed frame 451 via a linear slide rail, and the movable plate 452 is located directly above the frame of the shelf 42. The fixed ends of multiple electric telescopic rods 453 are fixedly connected to the bottom of the movable plate 452. Multiple striking heads 454 are fixedly connected to the movable ends of multiple electric telescopic rods 453, and the multiple striking heads 454 correspond one-to-one with the multiple electric telescopic rods 453. One end of each of the two sliding rods 455 is fixedly connected to the movable plate 452.

[0035] In one embodiment of this application, the drive mechanism 44 may include a drive motor 441, a first transmission belt 442, and a second transmission belt 443.

[0036] The first transmission belt 442 is driven by pulleys and mounted on two rotating rods 431. The drive motor 441 is fixedly mounted on the support frame 41. The second transmission belt 443 is driven by pulleys and mounted on the output shaft of the drive motor 441 and one of the rotating rods 431.

[0037] In one embodiment of this application, the drive mechanism 44 described in the above embodiments may further include two sector plates 444 and two balls 445.

[0038] Two sector plates 444 are fixedly mounted on the ends of the two connecting rods 432 away from the rotating parts, and the arc surfaces of the sector plates 444 are positioned away from the rotating parts. The arc surfaces of the two sector plates 444 are respectively set in a wave shape. Two balls 445 are respectively rolled at the bottom ends of the two sliding rods 455. The sliding rods 455 are slidably connected to the arc surfaces of the sector plates 444 through the balls 445. This is used to convert the motion of the movable frame 433 into the reciprocating lifting motion of the movable plate 452 when the movable frame 433 moves downward.

[0039] In one embodiment of this application, the striking mechanism 45 described in the above embodiment may further include a plurality of springs 456, which are respectively disposed between the top of the movable plate 452 and the top of the inner wall of the fixed frame 451, and the two ends of the plurality of springs 456 are respectively fixedly connected to the movable plate 452 and the fixed frame 451.

[0040] Specifically, the support frame 41 and the carrier frame 42 are respectively fixed on the side of the platform 1 near the discharge port of the straightening roller assembly 3. The carrier frame 42 is located above the support frame 41 and is in the shape of a rectangular frame, used to support the straightened cold-rolled plate.

[0041] When straightening cold-rolled steel sheets, the relevant personnel first start the drive assembly 2. The power output of the drive assembly 2 is transmitted to the straightening roller assembly 3 through the coupling, which drives the straightening rollers to rotate. Then, the relevant personnel feed the cold-rolled steel sheet to be straightened into the gap between the upper and lower straightening roller groups. Since the upper and lower straightening rollers are arranged alternately, the cold-rolled steel sheet will be subjected to alternating bending forces when passing through the rollers. In this process, the fibers of the sheet, which were originally of different lengths, gradually become more uniform and undergo plastic deformation, thereby gradually eliminating sheet shape defects such as wavy, flared, and sickle-shaped bends, and achieving the straightening of the cold-rolled steel sheet.

[0042] If it is necessary to straighten cold-rolled sheets of different thicknesses, the adjusting motor of the lifting and adjusting mechanism can be started to drive the screw to rotate, so that the nut seat drives the upper straightening roller group to rise and fall, and the gap between the upper and lower straightening roller groups can be adjusted to accommodate sheets of different thicknesses.

[0043] After the straightened cold-rolled sheet exits from the discharge port of the straightening roller assembly 3, it falls onto the carrier frame 42. At this time, the drive motor 441 of the drive mechanism 44 starts, and drives one of the rotating rods 431 to rotate through the second transmission belt 443. Then, through the first transmission belt 442, the other rotating rod 431 rotates synchronously. The rotation of the rotating rod 431 drives the movable frame 433 to perform reciprocating lifting and lowering motion in the circumferential direction through the connecting rod 432, thereby causing the conveying plate 434 to convey and unload the cold-rolled sheet on the carrier frame 42.

[0044] When the movable frame 433 moves downward, the sector plate 444 is above the rotating rod 431, and the ball bearing 445 at the bottom of the sliding rod 455 is slidably connected to contact the arc surface of the sector plate 443. Since the arc surface of the sector plate 444 is wavy, the ball bearing 445 rolls on the wavy arc surface, converting the movement of the movable frame 433 into the reciprocating lifting and lowering movement of the movable plate 452.

[0045] The reciprocating lifting motion of the movable plate 452 drives multiple electric telescopic rods 453 and striking heads 454 to move up and down, intermittently and repeatedly striking the surface of the cold-rolled plate on the rack 42. During the lifting and lowering process of the movable plate 452, multiple springs 456 play a role in buffering and resetting, ensuring the stability and continuity of the striking action. Through this intermittent and repeated striking, the internal stress of the plate is further released and redistributed, effectively improving the problem of uneven stress distribution caused by the existing straightening machine, improving the dimensional accuracy and mechanical properties of the cold-rolled plate in subsequent processing, and extending the service life of the cold-rolled plate.

[0046] In addition, relevant personnel can adjust the extension length of the movable end of the electric telescopic rod 453 to adjust the appropriate hammering force according to the different thicknesses of cold-rolled plates.

[0047] In summary, the cold-rolled sheet straightening device of this application embodiment can intermittently and repeatedly strike the surface of the cold-rolled sheet during the blanking process, thereby promoting the further release and redistribution of the internal stress of the sheet, effectively improving the problem of uneven stress distribution caused by existing straightening machines, thereby improving the dimensional accuracy and material mechanical properties of the cold-rolled sheet in subsequent processing, and extending the service life of the cold-rolled sheet.

[0048] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A cold-rolled steel sheet straightening device, characterized in that, It includes a frame (1), a drive assembly (2), a straightening roller assembly (3), and a feeding assembly (4), wherein, The drive assembly (2) and the straightening roller assembly (3) are respectively mounted on the frame (1), and the drive assembly (2) is connected to the straightening roller assembly (3); The feeding assembly (4) includes a support frame (41), a carrying frame (42), a conveying mechanism (43), a driving mechanism (44), and a striking mechanism (45), wherein, The support frame (41) and the carrier (42) are respectively fixedly installed on one side of the platform (1). The support frame (41) and the carrier (42) are respectively installed on the side close to the discharge port of the straightening roller assembly (3), and the carrier (42) is located above the support frame (41). The conveying mechanism (43) is mounted on the support frame (41), and the striking mechanism (45) is mounted on the conveying mechanism (43); The drive mechanism (44) is mounted on the support frame (41), and the drive mechanism (44) is connected to the conveying mechanism (43) and the striking mechanism (45) respectively.

2. The cold-rolled sheet straightening device according to claim 1, characterized in that, The shelf (42) is rectangular.

3. The cold-rolled sheet straightening device according to claim 2, characterized in that, The conveying mechanism (43) includes two rotating rods (431), two connecting rods (432), a movable frame (433), and multiple conveying plates (434), wherein, The two rotating rods (431) are respectively rotatably mounted on the support frame (41), and the two rotating rods (431) are respectively perpendicular to the support frame (41), and the two rotating rods (431) are on the same horizontal plane; The two connecting rods (432) are respectively sleeved on the two rotating rods (431), and the two connecting rods (432) correspond one-to-one with the two rotating rods (431); One end of each of the two connecting rods (432) is rotatably connected to the movable frame (433) via a rotating component, and the rotating component is vertically disposed between the rotating rod (431) and the movable frame (433); The multiple conveyor plates (434) are fixedly connected to the movable frame (433), the tops of the multiple conveyor plates (434) are on the same horizontal plane, and the multiple conveyor plates (434) are respectively located within the frame of the carrying rack (42).

4. The cold-rolled sheet straightening device according to claim 3, characterized in that, The striking mechanism (45) includes a fixed frame (451), a movable plate (452), multiple electrically telescopic rods (453), multiple striking heads (454), and two sliding rods (455), wherein, The fixed frame (451) is fixedly connected to the movable frame (433), and the fixed frame (451) is located above the carrying rack (42); The movable plate (452) is slidably connected to the fixed frame (451) via a linear slide rail, and the movable plate (452) is located directly above the frame of the shelf (42); The fixed ends of the plurality of electric telescopic rods (453) are respectively fixedly connected to the bottom of the movable plate (452); Each of the multiple striking heads (454) is fixedly connected to the movable end of the multiple electric telescopic rods (453), and the multiple striking heads (454) correspond one-to-one with the multiple electric telescopic rods (453); One end of each of the two sliding rods (455) is fixedly connected to the movable plate (452).

5. The cold-rolled sheet straightening device according to claim 4, characterized in that, The drive mechanism (44) includes a drive motor (441), a first transmission belt (442), and a second transmission belt (443), wherein, The first transmission belt (442) is driven by pulleys on the two rotating rods (431); The drive motor (441) is fixedly mounted on the support frame (41), and the second transmission belt (443) is driven by a pulley on the output shaft of the drive motor (441) and one of the rotating rods (431).

6. The cold-rolled sheet straightening device according to claim 5, characterized in that, The drive mechanism (44) further includes two sector plates (444) and two ball bearings (445), wherein, The two sector plates (444) are respectively fixedly mounted on the ends of the two connecting rods (432) away from the rotating member, and the arc-shaped surfaces of the sector plates (444) are disposed away from the rotating member; The arc surfaces of the two sector plates (444) are respectively set as wave-shaped, and the two balls (445) are respectively rolled at the bottom ends of the two sliding rods (455); The sliding rod (455) is slidably connected to the arc surface of the sector plate (444) through the ball bearing (445), and is used to convert the motion of the movable frame (433) into the reciprocating lifting motion of the movable plate (452) when the movable frame (433) moves downward.

7. The cold-rolled sheet straightening device according to claim 4, characterized in that, The striking mechanism (45) also includes a plurality of springs (456), which are respectively disposed between the top of the movable plate (452) and the top of the inner wall of the fixed frame (451), and the two ends of the plurality of springs (456) are respectively fixedly connected to the movable plate (452) and the fixed frame (451).

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