A steel strip precision slitting device

Abstract

The application discloses a steel strip precise slitting device, and relates to the technical field of slitting machines, which comprises a rack, an upper cutter, a lower cutter and a flat guiding mechanism. The upper cutter and the lower cutter are arranged on the rack and are driven by a driving device. The flat guiding mechanism comprises an upper flat plate, a lower flat plate and a height fine adjustment assembly. An upper cutter hole is formed in the upper flat plate for the upper cutter to pass through. The upper flat plate is arranged above the lower flat plate. The lower flat plate is fixed on the rack. A lower cutter hole is formed in the lower flat plate for the lower cutter to pass through. The height fine adjustment assembly is arranged between the upper flat plate and the lower flat plate. The slitting device can avoid the cutting position from being deviated and reduce burrs.

Description

Technical Field

[0001] This invention relates to the field of slitting machine technology, and in particular to a precision slitting device for steel strips. Background Technology

[0002] A steel strip slitting device is a mechanical device that longitudinally slits wide metal strips. It mainly achieves continuous cutting action through the rolling shearing of circular blades and can process materials such as steel strips, copper strips, and aluminum foil strips.

[0003] When the slitting device longitudinally slits the metal strip, the steel strip is cut between the upper and lower cutters. During the slitting process, the steel strip is subjected to the downward pressure of the upper cutter. Under the action of this downward pressure, the cutting position of the steel strip becomes uneven, which may lead to problems such as cutting position deviation and multiple burrs. Moreover, when cutting thicker steel strips, more cutting debris is generated. Under the high-speed rotation of the cutter, these debris can easily enter the cutter shaft or be adsorbed on the cutter, affecting the cutting effect. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a steel strip precision cutting device to solve the problems of cutting position deviation and multiple burrs.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A precision steel strip slitting device includes a frame, an upper cutter, a lower cutter, and a flattening and guiding mechanism. The upper cutter and the lower cutter are mounted on the frame and driven by a drive device. The flattening and guiding mechanism includes an upper flattening plate, a lower flattening plate, and a height fine-tuning component. The upper flattening plate has an upper cutter hole for the upper cutter to pass through. The upper flattening plate is located above the lower flattening plate. The lower flattening plate is fixed on the frame. The lower flattening plate has a lower cutter hole for the lower cutter to pass through. The height fine-tuning component is located between the upper flattening plate and the lower flattening plate.

[0007] The height fine-tuning component includes a telescopic drive, a telescopic rod, a movable rod, a housing, a first spring, a top rod, and a second spring. The telescopic drive is fixed to the lower flat plate and is used to drive the telescopic rod to perform linear telescopic movement. A conical platform is fixedly sleeved on the telescopic rod. One end of the movable rod abuts against the surface of the conical platform and can move along the surface of the conical platform. The other end is inserted into the housing and has a first inclined surface at its end. The housing is fixed to the lower flat plate. A receiving hole for accommodating the first spring is opened in the housing. The first spring is sleeved on the movable rod. The top rod is inserted into the housing, with its top extending out of the housing and fixed to the upper flat plate. The top rod and the movable rod are arranged perpendicularly. The top rod has a second inclined surface on its side wall facing the movable rod that slides against the first inclined surface. The second spring is fixed between the bottom of the top rod and the housing.

[0008] Furthermore, the upper flat plate has upper extensions at both ends, and the lower flat plate has lower extensions at both ends. The lower extensions are fixed on the frame. The height fine-tuning components are located between the upper extensions and the lower extensions. There are two sets of height fine-tuning components, which are respectively located at both ends of the lower flat plate.

[0009] Furthermore, three conical platforms are fixedly sleeved on the telescopic rod, and each conical platform abuts against a movable rod.

[0010] Furthermore, the surface of the conical platform is provided with a sliding groove, and one end of the movable rod is confined within the sliding groove and can move along the sliding groove.

[0011] Furthermore, the movable rod is provided with a limiting block, which is located in the receiving hole and is used to restrict the movable rod from escaping from the housing. The first spring is located between the limiting block and the wall of the receiving hole.

[0012] Furthermore, a movable hole is provided inside the housing, through which the push rod passes. The wall of the movable hole is provided with an inclined guide surface, and the second inclined surface movably abuts against the inclined guide surface.

[0013] Furthermore, brush assemblies are symmetrically provided on the walls of the upper and lower cutting holes. Each brush assembly includes a mounting frame, and a plurality of elastic elements are provided on the back of the mounting frame. The elastic elements are fixed between the mounting frame and the wall of the upper cutting hole or between the mounting frame and the wall of the lower cutting hole. A plurality of brush heads are provided on the front of the mounting frame, and the brush heads are used to brush the upper or lower cutting blade.

[0014] Furthermore, the frame is provided with a correction mechanism, which is located at the front end of the leveling guide mechanism. The correction mechanism includes a rotating frame, a first cylinder, a second cylinder, and a correction roller assembly. The rotating frame is rotatably mounted on the frame. The telescopic ends of the first cylinder and the second cylinder are respectively connected to the front end and the rear end of the rotating frame. Pressure sensors are respectively provided at both ends of the foremost correction roller in the correction roller assembly.

[0015] Furthermore, the correction roller group sequentially includes an inlet roller, an adjusting roller, a first correction roller, a second correction roller, and an outlet roller. The height of the adjusting roller is adjustable. The heights of the first correction roller and the second correction roller are the same, and the height of the outlet roller is less than the height of the second correction roller.

[0016] Furthermore, the frame is provided with a pressure roller assembly and a guide roller. The pressure roller assembly is located at the front end of the leveling and guiding mechanism. The pressure roller assembly includes an upper pressure roller and a lower pressure roller. The height of the upper pressure roller is adjustable. The lower pressure roller has the same height as the lower leveling plate. The guide roller is located at the front end of the pressure roller assembly. The height of the guide roller is the same as the height of the lower pressure roller.

[0017] The beneficial effects of this invention are:

[0018] This invention, by setting up a flattening and guiding mechanism, confines the steel strip between an upper flattening plate and a lower flattening plate. This allows the lower flattening plate to indirectly bear the downward pressure on the steel strip during longitudinal cutting, preventing deformation, sinking, or shaking of the steel strip at the cutting position, avoiding deviation of the cutting position, and reducing burrs. At the same time, the debris generated during cutting is blocked by the upper and lower flattening plates, reducing the adhesion of debris to the cutter shaft and blades, and minimizing the impact of debris on the cutting effect. By setting up a conical platform and a movable rod, as well as two-stage distance fine-tuning between the movable rod and the top rod, the distance between the upper and lower flattening plates can be finely adjusted to accommodate steel strips of different thicknesses. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the steel strip precision cutting device of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the correction mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the upper and lower cutting blades in this invention;

[0022] Figure 4 This is a schematic diagram of the flattening guide mechanism in this invention;

[0023] Figure 5 This is a schematic diagram of the structure of the highly fine-tuning component in this invention;

[0024] Figure 6 This is a partial cross-sectional view of the height fine-tuning component in this invention;

[0025] Figure 7 This is a schematic diagram of the height fine-tuning component with brush assembly in this invention;

[0026] Figure 8 This is a schematic diagram of the brush assembly in this invention;

[0027] Figure 9 This is a schematic diagram of the correction mechanism in this invention;

[0028] Figure 10 This is a schematic diagram of the internal structure of the correction mechanism in this invention;

[0029] In the diagram: 1. Frame; 2. Upper cutter; 3. Lower cutter; 4. Leveling guide mechanism; 41. Upper leveling plate; 42. Lower leveling plate; 43. Height fine-tuning component; 431. Telescopic drive component; 432. Telescopic rod; 433. Movable rod; 434. Housing; 435. First spring; 436. Top rod; 437. Second spring; 438. Conical platform; 439. First inclined surface; 4310. Receiving hole; 4311. Second inclined surface; 4312. Sliding groove; 4313. Limiting block; 4314. Movable hole; 4315. 4316. Inclined guide surface; 44. Slider; 45. Upper knife hole; 46. Lower knife hole; 47. Upper extension; 48. Lower extension; 5. Brush assembly; 51. Mounting bracket; 52. Elastic element; 53. Brush head; 6. Correction mechanism; 61. Rotating frame; 62. First cylinder; 63. Second cylinder; 64. Correction roller group; 641. Inlet roller; 642. Adjusting roller; 643. First correction roller; 644. Second correction roller; 645. Outlet roller; 646. Pressure sensor; 7. Pressure roller group; 8. Guide roller; 9. Guide roller. Detailed Implementation

[0030] To make the technical problems solved by the invention, the technical solutions and the beneficial effects clearer, the invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1-10 As shown, this invention provides a precision steel strip cutting device, including a frame 1, an upper cutter 2, a lower cutter 3, and a flattening and guiding mechanism 4. The upper cutter 2 and the lower cutter 3 are mounted on the frame 1 and driven by a drive device. The steel strip is guided between the upper cutter 2 and the lower cutter 3 through the flattening and guiding mechanism 4, and is longitudinally cut into narrow strips by the upper cutter 2 and the lower cutter 3. (Reference) Figure 3 The upper cutter 2 and the lower cutter 3 mesh and cut, driven by the cutter shaft. The upper cutter 2 and the lower cutter 3 can be made using existing technology, which will not be elaborated here.

[0032] refer to Figure 4-6The leveling and guiding mechanism 4 includes an upper leveling plate 41, a lower leveling plate 42, and a height fine-tuning component 43. The upper leveling plate 41 has an upper cutting hole 44 for the upper cutter 2 to pass through. The upper leveling plate 41 is located above the lower leveling plate 42. The lower leveling plate 42 is fixed on the frame 1. The lower leveling plate 42 has a lower cutting hole 45 for the lower cutter 3 to pass through. The upper cutting hole 44 and the lower cutting hole 45 are aligned vertically. The steel strip between the upper leveling plate 41 and the lower leveling plate 42 is cut by the upper cutter 2 and the lower cutter 3 at the positions of the upper cutting hole 44 and the lower cutting hole 45. Although the steel strip will be subjected to the downward pressure of the upper cutter 2 when it is longitudinally cut, the lower leveling plate 42 can share the downward pressure because the steel strip is confined between the upper leveling plate 41 and the lower leveling plate 42. This prevents the steel strip from deforming, sinking, or shaking at the cutting position, avoids the cutting position from shifting, and reduces burrs. Furthermore, the debris generated during cutting is blocked by the upper flat plate 41 and the lower flat plate 42, and falls between them, where it is carried away by the slit steel strip. This reduces adhesion to the cutter shaft and blades, minimizing the impact of debris on the cutting effect. The upper flat plate 41 and the lower flat plate 42 are equipped with an anti-scratch coating or film to prevent scratches on the surface of the steel strip.

[0033] The height fine-tuning component 43 is disposed between the upper flat plate 41 and the lower flat plate 42, and is used to fine-tune the distance between the upper flat plate 41 and the lower flat plate 42 to accommodate steel strips of different thicknesses. This facilitates the precise positioning of the steel strip between the upper flat plate 41 and the lower flat plate 42. Although the thicknesses of steel plates of different specifications are different, the difference is on the order of centimeters or even millimeters. Therefore, the present invention uses the height fine-tuning component 43 to fine-tune the distance between the upper flat plate 41 and the lower flat plate 42. The structure of the height fine-tuning component 43 is described in detail below.

[0034] The height fine-tuning component 43 includes a telescopic drive 431, a telescopic rod 432, a movable rod 433, a housing 434, a first spring 435, a push rod 436, and a second spring 437. The telescopic drive 431 can be a cylinder or an electric push rod, etc. The telescopic drive 431 is fixed on the lower flat plate 42 and is used to drive the telescopic rod 432 to perform linear telescopic movement. A conical platform 438 is fixedly sleeved on the telescopic rod 432. One end of the movable rod 433 abuts against the surface of the conical platform 438 and can move along the surface of the conical platform 438. The other end is inserted into the housing 434 and has a first spring 435 at the end. An inclined surface 439 is provided. The housing 434 is fixed on the lower flat plate 42. The housing 434 has a receiving hole 4310 for accommodating the first spring 435. The first spring 435 is sleeved on the movable rod 433. The push rod 436 is inserted into the housing 434, with its top extending out of the housing 434 and fixed to the upper flat plate 41. The push rod 436 and the movable rod 433 are arranged vertically. The push rod 436 has a second inclined surface 4311 on its side wall facing the movable rod 433, which slides against the first inclined surface 439. The second spring 437 is fixed between the bottom of the push rod 436 and the housing 434.

[0035] The telescopic drive component 431 drives the telescopic rod 432 to perform linear reciprocating motion, which in turn drives the conical platform 438 on the telescopic rod 432 to perform linear motion. The diameter of the conical platform 438 changes continuously, thereby continuously abutting the movable rod 433 in linear motion within the housing 434. The movable rod 433 and the telescopic rod 432 are set perpendicularly. The movable rod 433 abuts against the telescopic rod 432 through the first spring 435. The movable rod 433 and the top rod 436 are set perpendicularly. The first inclined surface 439 at the inner end of the movable rod 433 continuously abuts against the second inclined surface 4311 on the side wall of the top rod 436 as the movable rod 433 moves, thereby driving the top rod 436 to move vertically up and down in a straight line, thereby realizing the movement of the upper flat plate 41 relative to the lower flat plate 42, and thus achieving the purpose of fine-tuning the distance between the upper flat plate 41 and the lower flat plate 42.

[0036] refer to Figure 4 The upper flat plate 41 has upper extensions 46 at both ends, and the lower flat plate 42 has lower extensions 47 at both ends. The lower extensions 47 are fixed on the frame 1. The height fine-tuning component 43 is located between the upper extensions 46 and the lower extensions 47. The distance between the upper extensions 46 and the lower extensions 47 is relatively large, providing sufficient space to accommodate the height fine-tuning component 43. There are two sets of height fine-tuning components 43, which are respectively located at both ends of the lower flat plate 42.

[0037] refer to Figure 5 Three conical platforms 438 are fixedly fitted on the telescopic rod 432. Each conical platform 438 abuts against a movable rod 433. The upper flat plate 41 is fixed by multiple top rods 436 to increase the stability of the upper flat plate 41.

[0038] Furthermore, a sliding groove 4312 is formed on the surface of the conical truss 438, and one end of the movable rod 433 is confined within the sliding groove 4312 and can move along the sliding groove 4312. Specifically, a slider 4316 is hinged to one end of the movable rod 433. The slider 4316 is confined within the sliding groove 4312 and can slide along the sliding groove 4312. The sliding groove 4312 further limits the linear range of motion of the movable rod 433, preventing the movable rod 433 from detaching from the conical truss 438.

[0039] refer to Figure 6 The movable rod 433 is provided with a limiting block 4313. The limiting block 4313 is located in the receiving hole 4310 and is used to restrict the movable rod 433 from escaping from the housing 434. The first spring 435 is located between the limiting block 4313 and the wall of the receiving hole 4310.

[0040] Furthermore, a movable hole 4314 is provided inside the housing 434. The push rod 436 passes through the movable hole 4314. The wall of the movable hole 4314 is provided with an inclined guide surface 4315. The second inclined surface 4311 movably abuts against the inclined guide surface 4315. By providing the inclined guide surface 4315, the stability of the push rod 436 during movement is enhanced, preventing the push rod 436 from shaking during movement. It should be noted that the housing 434 is provided with a guide hole for the movable rod 433 and the push rod 436 to be inserted. The wall of the guide hole contacts the outer wall of the movable rod 433 and the push rod 436. Thus, the movable rod 433 and the push rod 436 move strictly in a straight line according to the direction of the guide hole during movement, without shaking.

[0041] refer to Figure 7 and Figure 8 The upper cutter hole 44 and the lower cutter hole 45 are symmetrically provided with brush assemblies 5. The brush assembly 5 includes a mounting frame 51. The back of the mounting frame 51 is provided with several elastic elements 52. The elastic elements 52 are springs. The elastic elements 52 are fixed between the mounting frame 51 and the wall of the upper cutter hole 44 or between the mounting frame 51 and the wall of the lower cutter hole 45. The front of the mounting frame 51 is provided with several brush heads 53. The brush heads 53 are used to brush the upper cutter 2 or the lower cutter 3.

[0042] The back of the mounting bracket 51 is inserted into the wall of the upper blade hole 44 or the lower blade hole 45, which limits the brush assembly 5 to only move back and forth, but not up and down. At the same time, the elastic element 52 is hidden on the back of the mounting bracket 51 and will not be affected by debris. The brush head 53 can not only brush away the debris on the upper and lower blades, but also further prevent the debris from escaping the space between the upper flat plate 41 and the lower flat plate 42. When brushing the blade head and part of the blade holder, the brush head 53 avoids the outermost blade edge to avoid affecting the cutting.

[0043] refer to Figure 9 and Figure 10The frame 1 is equipped with a correction mechanism 6, which is located at the front end of the leveling guide mechanism 4. The correction mechanism 6 includes a rotating frame 61, a first cylinder 62, a second cylinder 63, and a correction roller group 64. The rotating frame 61 is rotatably mounted on the frame 1. The telescopic ends of the first cylinder 62 and the second cylinder 63 are respectively connected to the front end and the rear end of the rotating frame 61. Pressure sensors 646 are respectively provided at both ends of the correction roller at the frontmost end of the correction roller group 64.

[0044] The invention also includes a control device that can analyze the values ​​of the two pressure sensors 646. When the pressure values ​​of the two pressure sensors 646 are the same, it indicates that the steel strip is at the center of the straightening roller group 64 and no straightening is required. When the pressure values ​​of the two pressure sensors 646 are different, the first cylinder 62 or the second cylinder 63 is adjusted to extend or retract, thereby driving the straightening roller group 64 to rotate by rotating forward or backward, thereby achieving the straightening effect.

[0045] Furthermore, the correction roller group 64 sequentially includes an inlet roller 641, an adjusting roller 642, a first correction roller 643, a second correction roller 644, and an outlet roller 645. The height of the adjusting roller 642 is adjustable, and the tension of the steel strip on the correction mechanism 6 is controlled by the adjusting roller 642. The first correction roller 643 and the second correction roller 644 have the same height. This setting increases the moving distance of the steel strip on the correction mechanism 6 and ensures the realization of correction. The height of the outlet roller 645 is less than the height of the second correction roller 644.

[0046] refer to Figure 1 The frame 1 is equipped with a pressure roller group 7 and a guide roller 8. The pressure roller group 7 is located at the front end of the leveling and guiding mechanism 4. The pressure roller group 7 includes an upper pressure roller and a lower pressure roller. The height of the upper pressure roller is adjustable, and the lower pressure roller is at the same height as the lower leveling plate 42. The guide roller 8 is located at the front end of the pressure roller group 7, and its height is the same as that of the lower pressure roller. This arrangement ensures the height and flatness of the steel strip entering the leveling and guiding mechanism 4. As a preferred embodiment, there are two sets of pressure roller groups 7, one set at the front end of the leveling and guiding mechanism 4 and the other set at the rear end of the lower cutter 3. In both sets, the height of the lower pressure roller is the same as the height of the lower leveling plate 42, ensuring the horizontal direction of the steel strip during cutting.

[0047] Working principle: The steel strip enters the correction mechanism 6. By detecting the pressure values ​​on both sides of the correction roller, the rotation of the correction roller group 64 is controlled to achieve correction. After passing through the correction mechanism 6, the steel strip is guided by the guide roller 8 to the pressure roller group 7, and then sent to the flattening guide mechanism 4. According to the thickness of the steel strip, the extension degree of the telescopic drive component 431 is adjusted, and the linear movement of the telescopic rod 432 is adjusted, which further drives the linear movement of the movable rod 433 and the top rod 436, and finally achieves the fine adjustment of the distance between the upper flattening plate 41 and the lower flattening plate 42. The steel strip is cut into strips by the upper cutter 2 and the lower cutter 3 between the upper flattening plate 41 and the lower flattening plate 42, and then sent to the next process by the guide roller 9 on the frame 1.

[0048] This invention utilizes a flattening and guiding mechanism 4 to confine the steel strip between an upper flattening plate 41 and a lower flattening plate 42. This allows the lower flattening plate 42 to indirectly bear the downward pressure on the steel strip during longitudinal cutting, preventing deformation, sagging, or wobbling of the steel strip at the cutting position, thus avoiding positional deviation and reducing burrs. Simultaneously, the debris generated during cutting is blocked by the upper and lower flattening plates 41 and 42, reducing debris adhesion to the cutter shaft and blades and minimizing its impact on the cutting effect. Furthermore, by setting up a two-stage distance fine-tuning mechanism between the conical platform 438 and the movable rod 433, and between the movable rod 433 and the top rod 436, the distance between the upper and lower flattening plates 41 and 42 can be finely adjusted to accommodate steel strips of different thicknesses.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall fall within the protection scope of the present invention.

Claims

1. A precision steel strip cutting device, characterized in that, The machine includes a frame (1), an upper cutter (2), a lower cutter (3), and a leveling guide mechanism (4). The upper cutter (2) and the lower cutter (3) are mounted on the frame (1) and driven by a drive device. The leveling guide mechanism (4) includes an upper leveling plate (41), a lower leveling plate (42), and a height fine-tuning component (43). The upper leveling plate (41) has an upper cutter hole (44) through which the upper cutter (2) passes. The upper leveling plate (41) is located above the lower leveling plate (42). The lower leveling plate (42) is fixed on the frame (1). The lower leveling plate (42) has a lower cutter hole (45) through which the lower cutter (3) passes. The height fine-tuning component (43) is located between the upper leveling plate (41) and the lower leveling plate (42). The height fine-tuning component (43) includes a telescopic drive (431), a telescopic rod (432), a movable rod (433), a housing (434), a first spring (435), a top rod (436), and a second spring (437). The telescopic drive (431) is fixed on the lower flat plate (42) and is used to drive the telescopic rod (432) to perform linear telescopic movement. A conical platform (438) is fixedly sleeved on the telescopic rod (432). One end of the movable rod (433) abuts against the surface of the conical platform (438) and can move along the surface of the conical platform (438). The other end is inserted into the housing (434) and has a first inclined surface (439) at the end. The housing (434) is fixed on the lower flat plate (42). On the flat plate (42), the housing (434) has a receiving hole (4310) for accommodating the first spring (435). The first spring (435) is sleeved on the movable rod (433). The top rod (436) is inserted into the housing (434), with its top extending out of the housing (434) and fixed to the upper flat plate (41). The top rod (436) and the movable rod (433) are arranged vertically. The top rod (436) has a second inclined surface (4311) on its side wall facing the movable rod (433) that slides against the first inclined surface (439). The second spring (437) is fixed between the bottom of the top rod (436) and the housing (434).

2. The steel strip precision cutting device according to claim 1, characterized in that, The upper flat plate (41) has upper extensions (46) at both ends, and the lower flat plate (42) has lower extensions (47) at both ends. The lower extensions (47) are fixed on the frame (1). The height fine-tuning component (43) is located between the upper extensions (46) and the lower extensions (47). There are two sets of the height fine-tuning component (43), which are respectively located at both ends of the lower flat plate (42).

3. The steel strip precision cutting device according to claim 1, characterized in that, The telescopic rod (432) is fixedly fitted with three conical platforms (438), and each conical platform (438) abuts against a movable rod (433).

4. The steel strip precision cutting device according to claim 1, characterized in that, The surface of the conical platform (438) is provided with a sliding groove (4312), and one end of the movable rod (433) is limited in the sliding groove (4312) and can move along the sliding groove (4312).

5. The steel strip precision cutting device according to claim 1, characterized in that, The movable rod (433) is provided with a limiting block (4313), the limiting block (4313) is provided in the receiving hole (4310) and is used to restrict the movable rod (433) from escaping from the housing (434), and the first spring (435) is provided between the limiting block (4313) and the wall of the receiving hole (4310).

6. The steel strip precision cutting device according to claim 1, characterized in that, The housing (434) has an openable hole (4314), the push rod (436) passes through the openable hole (4314), the wall of the openable hole (4314) has an inclined guide surface (4315), and the second inclined surface (4311) moves against the inclined guide surface (4315).

7. The steel strip precision cutting device according to claim 1, characterized in that, The upper cutting hole (44) and the lower cutting hole (45) are symmetrically provided with brush assemblies (5). The brush assembly (5) includes a mounting bracket (51). The back of the mounting bracket (51) is provided with a plurality of elastic elements (52). The elastic elements (52) are fixed between the mounting bracket (51) and the wall of the upper cutting hole (44) or between the mounting bracket (51) and the wall of the lower cutting hole (45). The front of the mounting bracket (51) is provided with a plurality of brush heads (53). The brush heads (53) are used to brush the upper cutting blade (2) or the lower cutting blade (3).

8. The steel strip precision cutting device according to claim 1, characterized in that, The frame (1) is provided with a correction mechanism (6), which is located at the front end of the leveling guide mechanism (4). The correction mechanism (6) includes a rotating frame (61), a first cylinder (62), a second cylinder (63), and a correction roller group (64). The rotating frame (61) is rotatably mounted on the frame (1). The telescopic ends of the first cylinder (62) and the second cylinder (63) are respectively connected to the front end and the rear end of the rotating frame (61). Pressure sensors (646) are respectively provided at both ends of the correction roller at the front end of the correction roller group (64).

9. A steel strip precision cutting device according to claim 8, characterized in that, The correction roller group (64) includes, in sequence, an inlet roller (641), an adjusting roller (642), a first correction roller (643), a second correction roller (644), and an outlet roller (645). The height of the adjusting roller (642) is adjustable. The heights of the first correction roller (643) and the second correction roller (644) are the same, and the height of the outlet roller (645) is less than the height of the second correction roller (644).

10. A precision steel strip cutting device according to claim 1, characterized in that, The frame (1) is provided with a pressure roller group (7) and a guide roller (8). The pressure roller group (7) is located at the front end of the flattening guide mechanism (4). The pressure roller group (7) includes an upper pressure roller and a lower pressure roller. The height of the upper pressure roller is adjustable. The lower pressure roller has the same height as the lower flattening plate (42). The guide roller (8) is located at the front end of the pressure roller group (7). The height of the guide roller (8) is the same as the height of the lower pressure roller.

Images