Ultrathin steel strip feeding mechanism, feeding process and high-speed stamping equipment

Abstract

The invention discloses an ultrathin steel strip feeding mechanism, a feeding process and high-speed stamping equipment, and relates to the technical field of conveying equipment. An ultra-thin steel belt feeding mechanism comprises a rack and further comprises a plurality of pairs of first conveying rollers and second conveying rollers which are installed at the two ends of the rack respectively, a leveling assembly is arranged on the rack and located between the first conveying rollers and the second conveying rollers, and a plurality of pairs of second conveying rollers are arranged on the rack and located between the first conveying rollers and the second conveying rollers. The leveling assembly comprises an upper plate and a lower plate which are symmetrically arranged up and down, and an opening and closing part for driving the upper plate and the lower plate to be away from each other or close to each other is arranged on the rack; when conveying of the ultrathin steel belt is achieved, reverse shape correcting force can be automatically applied to the steel belt, the natural curvature generated by winding is effectively counteracted, particularly, the problem that the curvature is increased when the winding diameter is reduced can be solved, and follow-up spontaneous bending deformation of a workpiece is effectively reduced.

Description

Technical Field

[0001] This invention belongs to the field of conveying equipment technology, and more specifically, relates to an ultra-thin steel strip feeding mechanism. Background Technology

[0002] Stamping equipment is a type of mechanical equipment that uses dies to apply pressure to metal sheets, causing them to undergo plastic deformation or separation, thereby obtaining workpieces of the required shape and size. In the processing of ultra-thin steel strips, stamping equipment uses precisely matched punches and dies to apply huge stamping pressure in a short time to achieve processes such as punching, forming, and cutting of ultra-thin materials. This type of equipment usually has the characteristics of high precision, high speed, and high stability, and requires extremely strict control of die clearance to avoid material deformation, wrinkling, or tearing. It is especially suitable for producing lightweight, complex precision parts.

[0003] However, when stamping ultra-thin steel strips, the material must first be unrolled from the roll and transported to the stamping station. This process causes the steel strip to develop a natural curvature due to the inertia of winding. The presence of this curvature results in the material being in a non-ideal flat state during the stamping process, which in turn affects the forming accuracy and consistency. This leads to dimensional deviations or shape defects in some stamped workpieces. Especially when the steel strip on the roll is about to run out, the curvature of the steel strip will increase significantly due to the reduction in roll diameter and changes in unrolling tension. The internal stress distribution of the material will be more uneven. At this time, the workpieces produced are very prone to spontaneous bending deformation, and may even lead to flatness deviations, which seriously affects the quality stability and pass rate of mass production. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an ultra-thin steel strip feeding mechanism that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An ultra-thin steel strip feeding mechanism includes a frame and multiple pairs of first and second conveying rollers, respectively installed at both ends of the frame. The frame is provided with a leveling assembly located between the first and second conveying rollers. The leveling assembly includes an upper plate and a lower plate symmetrically arranged vertically. The frame is provided with an opening and closing part that drives the upper plate and the lower plate to move away from or closer to each other.

[0006] To enable the opening and closing action of the upper and lower plates, preferably, the opening and closing part includes two support plates connected to the frame. Guide rods are connected to both the upper and lower plates, and the two sets of guide rods are slidably mounted longitudinally on the two support plates. Motors are mounted on both support plates, and turntables are fixedly mounted on the output shafts of the two motors. Eccentrically arranged push rods are rotatably connected to the two turntables, and the ends of the two push rods are rotatably connected to the upper plate and the lower plate, respectively.

[0007] To make the surface of the ultra-thin steel strip more uniformly stressed, preferably, an active thin plate and a passive thin plate are connected to the extrusion surfaces of the upper plate and the lower plate, respectively. Both the active thin plate and the passive thin plate are bent upwards. The upper plate is provided with a pressing part that presses against the active thin plate. When the upper plate and the lower plate gradually approach each other, the pressing part drives the active thin plate to gradually bend downwards.

[0008] In order to automatically realize the state adjustment of the active thin plate, preferably, the top pressing part includes a slot opened at the bottom of the upper plate, a top block is longitudinally slidably installed in the slot, the lower end of the top block is provided with an arc-shaped surface facing the active thin plate, a stud is rotatably installed in the top of the slot, the upper end of the top block is provided with an internal threaded hole, and the lower end of the stud is threaded into the internal threaded hole.

[0009] To automatically achieve forward and reverse rotation of the stud, preferably, a worm gear is rotatably connected to the top of the upper plate, a worm wheel that meshes with the worm gear is fixedly installed on the stud, a driven gear is installed at the shaft end of the worm gear, and a rack that meshes with the driven gear is installed on the support plate.

[0010] In order to effectively support and limit the upper and lower plates, preferably, elastic seats are connected to both sides of the opposite surfaces of the upper and lower plates, and rotating seats are connected to both sides of the active and passive thin plates, with the two sets of rotating seats rotatably connected to the two sets of elastic seats respectively.

[0011] In order to achieve leveling during the conveying of ultra-thin steel strips, the frame is further provided with symmetrically arranged side plates, and a crossbeam is connected between the two side plates. The crossbeam is parallel to the conveying direction of the first conveying roller and the second conveying roller. The support plate is slidably mounted on the crossbeam, and a return spring is installed between the support plate and one of the side plates.

[0012] In order to enable the two support plates to move synchronously, a C-shaped plate is connected between the two support plates, and a baffle is connected to the top of the frame to cover the support plates.

[0013] A feeding process for ultra-thin steel strip includes the following steps: S1. Guide the free end of the steel belt into the gap between the second conveyor rollers to complete the feeding; S2. Start the drive, the conveyor rollers rotate synchronously, and the steel belt passes horizontally through the leveling area to the first conveyor roller; S3. Start the motor, which drives the upper and lower plates to move closer and further apart intermittently via the crank-slider mechanism; S4. When the upper and lower plates are close together, the elastic thin plate is attached to the steel strip and bent in the opposite direction to eliminate the curvature. S5. The leveled steel strip is stably output by the first conveyor roller and sent to the stamping station.

[0014] A high-speed stamping device includes a stamping press with a stamping die, the frame being connected to the stamping press, and the output end of the first conveying roller facing the input end of the stamping die.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This invention drives the upper and lower plates to press together periodically through a crank-slider mechanism, and applies a reverse straightening force to the steel strip using an elastic thin plate that can automatically adjust the curvature, effectively offsetting the natural curvature caused by winding. In particular, it can deal with the problem of increased curvature when the roll diameter is reduced, and effectively reduce the subsequent spontaneous bending deformation of the workpiece.

[0016] 2. This invention enables the leveling component to operate synchronously during the continuous conveying of the steel strip. The sliding and return spring design of the support plate ensures that the leveling action does not hinder the material's progress, achieving leveling without stopping the machine. This not only ensures continuous and efficient stamping production but also guarantees the consistency of the leveling effect of the entire roll of material, thereby improving the batch qualification rate.

[0017] 3. The present invention sets up pre-bent active thin plates and passive thin plates on the upper plate and lower plate. In the initial stage, the steel strip with curvature is bonded with a large area of ​​flexible curved surface to avoid local stress concentration and scratching of the ultra-thin material. The top pressure part can automatically drive the thin plate to transition from the bonding state to the straightening state, so as to achieve uniform force application and smooth transition, and improve the leveling safety of the ultra-thin steel strip.

[0018] 4. This invention automatically converts the lifting motion of the upper plate into the adjustment of the bending degree of the thin plate through a gear and rack mechanism, realizing the precise linkage between the straightening action and the pressing action without additional control. The design of the C-shaped plate and the baffle ensures the synchronization and stability of the mechanism's movement, providing reliable support for high-quality continuous leveling.

[0019] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of an ultra-thin steel strip feeding mechanism proposed in this invention. Figure 1 ; Figure 2This is a schematic diagram of the frame structure of an ultra-thin steel strip feeding mechanism proposed in this invention; Figure 3 This is a partial front view structural diagram of an ultra-thin steel strip feeding mechanism proposed in this invention; Figure 4 This is a partial exploded view of an ultra-thin steel strip feeding mechanism proposed in this invention; Figure 5 This invention proposes an ultra-thin steel strip feeding mechanism. Figure 3 Schematic diagram of part A in the middle; Figure 6 This is a three-dimensional structural diagram of a high-speed stamping device proposed in this invention. Figure 1 ; Figure 7 This is a three-dimensional structural diagram of a high-speed stamping equipment proposed in this invention. Figure 2 .

[0021] In the diagram: 1. Frame; 2. First conveyor roller; 3. Second conveyor roller; 4. Upper plate; 5. Lower plate; 6. Support plate; 7. Guide rod; 8. Motor; 9. Turntable; 10. Push rod; 11. Crossbeam; 12. Side plate; 13. Return spring; 14. Active plate; 15. Elastic seat; 16. Rotating seat; 17. Inclined plate; 18. Slotted; 19. Top block; 20. Passive plate; 21. Stud; 22. Driven gear; 23. Rack; 24. Worm; 25. Worm wheel; 26. Arc surface; 27. C-shaped plate; 28. Internal threaded hole; 29. ​​Press; 30. Press die; 31. Baffle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] Example 1: Refer to Figures 1-6 As shown, an ultra-thin steel strip feeding mechanism includes a frame 1 for supporting the entire device, and further includes multiple pairs of first conveying rollers 2 and second conveying rollers 3 for conveying ultra-thin steel strips, which are respectively installed at both ends of the frame 1. There are gaps between the pairs of first conveying rollers 2 and the pairs of second conveying rollers 3. A driving device (not shown in the figure) for driving the first conveying rollers 2 and second conveying rollers 3 to rotate is installed on the frame 1. The frame 1 is provided with a leveling component, which is located between the first conveying rollers 2 and second conveying rollers 3. The leveling component includes an upper plate 4 and a lower plate 5 arranged symmetrically. The frame 1 is provided with an opening and closing part for driving the upper plate 4 and the lower plate 5 to move away from or towards each other.

[0024] Specifically, in use, the end of the ultra-thin steel strip is inserted between two pairs of second conveying rollers 3. The two second conveying rollers 3 convey the ultra-thin steel strip in the opposite direction to the first conveying roller 2. When the ultra-thin steel strip passes between the upper plate 4 and the lower plate 5, the leveling component will drive the upper plate 4 and the lower plate 5 to intermittently move closer and further away from each other. When the upper plate 4 and the lower plate 5 move closer to each other, they will squeeze the upper and lower surfaces of the ultra-thin steel strip, thereby realizing the automatic leveling of the ultra-thin steel strip and ensuring the quality of subsequent workpieces.

[0025] Example 2: Refer to Figure 5 An ultra-thin steel strip feeding mechanism, which is basically the same as that in Example 1, but further includes the following: The opening and closing part includes two support plates 6 connected to the frame 1. Both the upper plate 4 and the lower plate 5 are connected to longitudinally arranged guide rods 7. The two sets of guide rods 7 are slidably mounted longitudinally on the two support plates 6 respectively. Motors 8 are installed on both support plates 6. Turntables 9 are fixedly installed on the output shafts of the two motors 8. Eccentrically arranged push rods 10 are rotatably connected to both turntables 9. The ends of the two push rods 10 are rotatably connected to the upper plate 4 and the lower plate 5 respectively. The turntables 9, push rods 10 and the upper plate 4 or the lower plate 5 are combined to form a crank-slider mechanism.

[0026] Specifically, during the conveying process, the motor 8 is started, which can drive the turntable 9 to rotate continuously. The turntable 9 can drive the upper plate 4 and the lower plate 5 to move up and down repeatedly in opposite directions through the push rod 10 using the principle of a crank and slider. In other words, the upper plate 4 and the lower plate 5 will move away from each other or closer to each other intermittently, thus realizing the automatic flattening of the ultra-thin steel strip.

[0027] Example 3: Reference Figure 4 An ultra-thin steel strip feeding mechanism, basically the same as in Example 2, but further: Active thin plate 14 and passive thin plate 20 are respectively connected to the extrusion surfaces of the upper plate 4 and the lower plate 5. The thickness of active thin plate 14 and passive thin plate 20 is greater than that of ultra-thin steel strip and they are elastic. Both active thin plate 14 and passive thin plate 20 are bent upwards to match the ultra-thin steel strip that is slightly bent upwards. The upper plate 4 is provided with a pressing part that presses against the active thin plate 14. When the upper plate 4 and the lower plate 5 gradually approach each other, the pressing part drives the active thin plate 14 to bend downwards. The pressing part includes a slot 18 opened at the bottom of the upper plate 4. A top block 19 is longitudinally slidably installed in the slot 18. The lower end of the top block 19 is provided with an arc-shaped surface 26 facing the active thin plate 14. A stud 21 is rotatably installed in the top of the slot 18. An internal threaded hole 28 is opened at the upper end of the top block 19. The lower end of the stud 21 is threadedly connected in the internal threaded hole 28.

[0028] Specifically, during the approach of the upper plate 4 and the lower plate 5, since both the active thin plate 14 and the passive thin plate 20 are in a bent state, initially, the active thin plate 14 and the passive thin plate 20 can fit more closely to the upper and lower surfaces of the ultra-thin steel strip, preventing localized pressure on the ultra-thin steel strip from the upper plate 4 and the lower plate 5, thereby improving the uniformity of stress on the ultra-thin steel strip and making it less prone to scratches; after fitting, the stud 21 is rotated clockwise, and the stud 21, under the action of the internal threaded hole 28, drives the top block 19 in the slot 1. As the top block 19 slides downwards, it pushes the arc-shaped surface 26 towards the active thin plate 14. The active thin plate 14 gradually becomes horizontal and eventually bends downwards, causing the ultra-thin steel strip to gradually bend downwards. This can offset part of the rebound force of the ultra-thin steel strip and improve the leveling effect of the ultra-thin steel strip. During this period, the passive thin plate 20 will bend downwards along with the ultra-thin steel strip under passive action, thereby evenly supporting the lower end face of the ultra-thin steel strip. After leveling is completed, the stud 21 is reversed, which allows the active thin plate 14 to gradually bend upwards.

[0029] Reference Figures 3-4 As shown, a worm gear 24 is rotatably connected to the top of the upper plate 4, a worm wheel 25 that meshes with the worm gear 24 is fixedly installed on the stud 21, a driven gear 22 is installed on the shaft end of the worm gear 24, and a rack 23 that meshes with the driven gear 22 is installed on the support plate 6.

[0030] When the upper plate 4 moves downward, it drives the driven gear 22 to roll along the rack 23. The rack 23 then drives the driven gear 22 to rotate, which in turn drives the worm 24 to rotate. The worm 24 then drives the stud 21 to rotate through the worm wheel 25 that meshes with it, thus automatically adjusting the active thin plate 14. Conversely, when the upper plate 4 moves upward to reset, the rack 23 drives the driven gear 22 to reverse, thus automatically resetting the active thin plate 14.

[0031] Reference Figure 4 and Figure 5 As shown, elastic seats 15 are connected to both sides of the opposite surfaces of the upper plate 4 and the lower plate 5. The elastic seats 15 are elastic and have a plate-like shape. Rotating seats 16 are connected to both sides of the active thin plate 14 and the passive thin plate 20. The two sets of rotating seats 16 are rotatably connected to the two sets of elastic seats 15 respectively.

[0032] Specifically, when the active thin plate 14 and the passive thin plate 20 are bent, the rotating seats 16 and the elastic seats 15 on both sides can effectively limit their movement.

[0033] In addition, to prevent the ends of the active thin plate 14 from scratching the ultra-thin steel strip, inclined plates 17 that are tilted upwards can be connected to the ends of the active thin plate 14.

[0034] Example 4: Reference Figure 4An ultra-thin steel strip feeding mechanism, basically the same as in Example 3, but further: The frame 1 is connected to symmetrically arranged side plates 12, and a crossbeam 11 is connected between the two side plates 12. The crossbeam 11 is parallel to the conveying direction of the first conveying roller 2 and the second conveying roller 3. The support plate 6 is slidably installed on the crossbeam 11, and a return spring 13 is installed between the support plate 6 and one of the side plates 12.

[0035] Specifically, when the active thin plate 14 and the passive thin plate 20 approach each other, they clamp the ultra-thin steel strip. If the ultra-thin steel strip is moving horizontally at this time, the friction between the two will cause the ultra-thin steel strip to drive the active thin plate 14 and the passive thin plate 20 to move synchronously, which will in turn drive the support plate 6 to slide on the crossbeam 11 and compress the return spring 13. When the active thin plate 14 and the passive thin plate 20 move away from each other and return to their original positions, the ultra-thin steel strip will no longer provide thrust to the support plate 6 and the return spring 13. At this time, the return spring 13 will elastically return to its original position and drive the support plate 6 to slide and return to its original position in the opposite direction. Thus, the active thin plate 14 and the passive thin plate 20 can be leveled during the movement of the ultra-thin steel strip, so as not to affect the conveying operation of the ultra-thin steel strip and ensure the subsequent processing efficiency of the stamping equipment.

[0036] Reference Figure 1 As shown, a C-shaped plate 27 is connected between the two support plates 6, and a baffle 31 is connected to the top of the frame 1 to cover the support plates 6.

[0037] Specifically, when the support plate 6 moves horizontally, the C-shaped plates 27 on both sides can keep the two support plates 6 synchronized, prevent speed difference between the active thin plate 14 and the passive thin plate 20, and ensure their synchronization. The baffle 31 can effectively isolate and protect the support plate 6 and the mechanism below.

[0038] Example 5: Refer to Figures 1-7 A feeding process for ultra-thin steel strips includes the following steps: S1. First, guide the free end of the coiled ultra-thin steel strip and insert it into the gap between a pair of second conveyor rollers 3 located at the discharge end of the frame 1; S2. Start the drive equipment to drive the first conveyor roller 2 and the second conveyor roller 3 to rotate synchronously. The second conveyor roller 3 conveys the steel strip to the feed end of the frame 1 (i.e., the direction of the first conveyor roller 2). The front end of the steel strip passes through the leveling component area in sequence and is finally fed into the gap between the pair of first conveyor rollers 2 to complete the threading. The entire conveying path remains horizontal. S3. When the steel belt passes between the first conveyor roller 2 and the second conveyor roller 3 at a constant speed, start the two motors 8 installed on the support plate 6. The motors 8 drive the turntable 9 to rotate continuously. Through the eccentrically connected push rod 10, drive the upper plate 4 and the lower plate 5 to reciprocate vertically in opposite directions, so that the two intermittently approach and move away from each other. S4. When the steel strip runs between the upper plate 4 and the lower plate 5 and the two are close to each other, the ultra-thin steel strip is gradually bent in the opposite direction by the active thin plate 14 and the passive thin plate 20. S5. The ultra-thin steel strip, after being leveled by the leveling component, is stably output by the first conveyor roller 2 and sent to the subsequent stamping station for processing in a flat state.

[0039] Example 6: Refer to Figure 4 A high-speed stamping device includes a stamping machine 29 with a stamping die 30. The stamping die 30 is mainly composed of an upper die and a lower die that cooperate with each other, and the two are intermittently close to and far apart. The frame 1 is connected to the stamping machine 29, and the output end of the first conveying roller 2 faces the input end of the stamping die 30.

[0040] Specifically, the ultra-thin steel strip output from the first conveying roller 2 will enter the stamping die 30 to realize the subsequent stamping work.

[0041] In use, the end of the ultra-thin steel strip is inserted between two pairs of second conveying rollers 3. The two second conveying rollers 3 transport the ultra-thin steel strip to the first conveying roller 2 in the opposite direction. When the ultra-thin steel strip passes between the upper plate 4 and the lower plate 5, the motor 8 is started. The motor 8 drives the turntable 9 to rotate continuously. The turntable 9 can drive the upper plate 4 and the lower plate 5 to move up and down in opposite directions through the push rod 10 using the principle of a crank and slider. When the upper plate 4 and the lower plate 5 approach each other, they will squeeze the upper and lower surfaces of the ultra-thin steel strip, thereby realizing the automatic leveling of the ultra-thin steel strip and ensuring the quality of subsequent workpieces.

[0042] During the period when the upper plate 4 and the lower plate 5 are close to each other, since both the active thin plate 14 and the passive thin plate 20 are in a bent state, in the initial stage, the active thin plate 14 and the passive thin plate 20 can fit more closely to the upper and lower surfaces of the ultra-thin steel strip, preventing the ultra-thin steel strip from being pressed by the upper plate 4 and the lower plate 5 in some areas, thereby improving the uniformity of the stress on the ultra-thin steel strip and making the ultra-thin steel strip less likely to be scratched. As the upper plate 4 moves downward, it drives the driven gear 22 to roll along the rack 23. The rack 23 then drives the driven gear 22 to rotate, which in turn drives the worm 24 to rotate. The worm 24, through the worm wheel 25 meshing with it, drives the stud 21 to rotate clockwise. The stud 21, under the action of the internal threaded hole 28, drives the top block 19 to slide downward within the slot 18. The top block 19 pushes the arc-shaped surface 26 against the driving thin plate 14, causing the driving thin plate 14 to gradually become horizontal. Eventually, it will bend downwards, causing the ultra-thin steel strip to gradually bend downwards, which can offset part of the rebound force of the ultra-thin steel strip and improve the leveling effect of the ultra-thin steel strip. During this period, the passive plate 20 will bend downwards with the ultra-thin steel strip under passive action, thereby evenly supporting the lower end face of the ultra-thin steel strip. When the leveling is completed, the upper plate 4 moves upwards to reset, and the rack 23 will drive the driven gear 22 to reverse, causing the stud 21 to reverse, so that the active plate 14 can gradually bend upwards.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been described above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications or alterations made by those skilled in the art without departing from the scope of the present invention using the above-described technical content can be considered as equivalent embodiments. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A feeding mechanism for ultra-thin steel strips, comprising a frame (1), characterized in that, Also includes: Multiple pairs of first conveyor rollers (2) and second conveyor rollers (3) are respectively installed at both ends of the frame (1). The frame (1) is provided with a leveling component, which is located between the first conveying roller (2) and the second conveying roller (3); The leveling assembly includes an upper plate (4) and a lower plate (5) arranged symmetrically on the top and bottom. The frame (1) is provided with an opening and closing part that drives the upper plate (4) and the lower plate (5) to move away from or close to each other.

2. The ultra-thin steel strip feeding mechanism according to claim 1, characterized in that, The opening and closing part includes two support plates (6) connected to the frame (1). Guide rods (7) are connected to both the upper plate (4) and the lower plate (5). The two sets of guide rods (7) are respectively slidably installed on the two support plates (6) in the longitudinal direction. Among them, motors (8) are installed on both of the two support plates (6), and turntables (9) are fixedly installed on the output shafts of the two motors (8). An eccentrically arranged push rod (10) is rotatably connected to each of the two turntables (9), and the ends of the two push rods (10) are rotatably connected to the upper plate (4) and the lower plate (5) respectively.

3. The ultra-thin steel strip feeding mechanism according to claim 2, characterized in that, An active thin plate (14) and a passive thin plate (20) are respectively connected to the pressing surfaces of the upper plate (4) and the lower plate (5). Both the active thin plate (14) and the passive thin plate (20) are bent upwards. The upper plate (4) is provided with a pressing part that presses the active thin plate (14). When the upper plate (4) and the lower plate (5) gradually approach each other, the pressing part drives the active thin plate (14) to gradually bend downwards.

4. The ultra-thin steel strip feeding mechanism according to claim 3, characterized in that, The top pressing part includes a slot (18) opened at the bottom of the upper plate (4). A top block (19) is longitudinally slidably installed in the slot (18). The lower end of the top block (19) is provided with an arc-shaped surface (26) facing the active thin plate (14). A stud (21) is rotatably installed in the top of the slot (18). An internal threaded hole (28) is opened at the upper end of the top block (19). The lower end of the stud (21) is threaded into the internal threaded hole (28).

5. The ultra-thin steel strip feeding mechanism according to claim 4, characterized in that, The top of the upper plate (4) is rotatably connected to a worm (24), and a worm wheel (25) that meshes with the worm (24) is fixedly installed on the stud (21). A driven gear (22) is installed on the shaft end of the worm (24), and a rack (23) that meshes with the driven gear (22) is installed on the support plate (6).

6. The ultra-thin steel strip feeding mechanism according to claim 3, characterized in that, Both sides of the upper plate (4) and the lower plate (5) are connected to elastic seats (15), and both sides of the active thin plate (14) and the passive thin plate (20) are connected to rotating seats (16). The two sets of rotating seats (16) are rotatably connected to the two sets of elastic seats (15).

7. The ultra-thin steel strip feeding mechanism according to claim 2, characterized in that, The frame (1) is connected to symmetrically arranged side plates (12), and a crossbeam (11) is connected between the two side plates (12). The crossbeam (11) is parallel to the conveying direction of the first conveying roller (2) and the second conveying roller (3). The support plate (6) is slidably installed on the crossbeam (11), and a return spring (13) is installed between the support plate (6) and one of the side plates (12).

8. The ultra-thin steel strip feeding mechanism according to claim 2, characterized in that, A C-shaped plate (27) is connected between the two support plates (6), and a baffle (31) is connected to the top of the frame (1) to cover the support plates (6).

9. A feeding process for ultra-thin steel strips, characterized in that, The ultra-thin steel strip feeding mechanism as described in any one of claims 1-8 includes the following steps: S1. Insert the free end of the steel strip into the gap between the second conveyor rollers (3); S2. Start the drive equipment to make the first conveyor roller (2) and the second conveyor roller (3) rotate synchronously and convey the steel belt horizontally; S3. Start the motor (8), which drives the upper plate (4) and lower plate (5) to move closer and further apart intermittently via the turntable (9) and push rod (10); S4. When the upper plate (4) and the lower plate (5) are close together, the active thin plate (14) and the passive thin plate (20) perform reverse bending and straightening on the steel strip. S5. The leveled steel strip is stably output by the first conveyor roller (2) and sent to the subsequent stamping station.

10. A high-speed stamping device, comprising an ultra-thin steel strip feeding mechanism as described in any one of claims 1-8, characterized in that, It also includes a press (29) with a stamping die (30), the frame (1) being connected to the press (29), and the output end of the first conveying roller (2) facing the input end of the stamping die (30).

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