Anti-bending device for high-strength steel plate

Abstract

A high-strength steel plate anti-bending device comprises a rack, an upper roller, an upper roller lifting mechanism and a lower roller, the upper roller lifting mechanism is arranged on the upper portion of the rack, the upper roller is connected to the upper roller lifting mechanism, and the lower roller is installed on the lower portion of the rack. The high-strength steel plate with the upward turtle back enters the position between the upper roller and the lower roller, the upper roller is pressed on the high-strength steel plate under the action of the upper roller lifting mechanism, enough pressure is formed, the steel plate generates plastic deformation in the width direction, and then the steel plate enters the leveling machine through the clamping and conveying mechanism. Through mutual cooperation of the upper roller and the lower roller, the high-strength steel plate generates plastic deformation in the width direction, the phenomenon that the turtle back rebounds due to elastic deformation is avoided, and the purpose of eliminating the turtle back phenomenon of the steel plate is achieved or approximately achieved; meanwhile, because the turtle back is pressed to be bent reversely, a large amount of stress concentrated at the turtle back is released, and the shape of the steel plate in the width direction is thoroughly changed.

Description

Technical Field

[0001] The invention relates to a device for leveling a high-strength steel plate with a turtleback phenomenon, belonging to the technical field of high-strength steel plate leveling. Background Art

[0002] High-strength steel plates generally have serious turtle back phenomenon. Due to their high strength and high elasticity, they can hardly reach the state of plastic deformation in ordinary leveling machines, resulting in extremely poor stress release effect and negligible plate shape improvement effect. The existing leveling methods have extremely poor turtle back leveling effect on high-strength steel plates and cannot achieve the ideal leveling effect at all.

[0003] The deep bending rollers on the existing leveling machines use full-length rollers on the upper part, and the overall curvature is extremely limited. They can only change the state of the steel plate in the length direction through deep bending, which can release a certain amount of stress, but cannot cause the steel plate to deform in the width direction. The stress release is also insufficient, and the turtle back improvement effect is not obvious.

[0004] At present, there is an urgent need in the market for a device that can effectively address the turtleback phenomenon of high-strength steel plates and achieve leveling of high-strength steel plates. Summary of the invention

[0005] The present invention aims at the deficiencies of the existing high-strength steel plate leveling technology and provides a high-strength steel plate anti-bending device which can effectively eliminate the turtle back phenomenon of the high-strength steel plate.

[0006] The high-strength steel plate bending device of the present invention adopts the following technical solutions:

[0007] The reverse bending device comprises a frame, an upper roller, an upper roller lifting mechanism and a lower roller. The upper roller lifting mechanism is arranged on the upper part of the frame, the upper roller is connected to the upper roller lifting mechanism, and the lower roller is installed on the lower part of the frame.

[0008] A connecting beam is arranged on the frame below the lower roller to connect the front and rear units to enhance firmness.

[0009] A feeding plate is arranged on the feeding side of the frame to allow the steel plate to smoothly enter between the upper roller and the lower roller.

[0010] The frame is provided with a pinching mechanism on the discharging side to provide support for the steel plate after deformation. The pinching mechanism comprises a pinching seat, an upper pinching roller and a lower pinching roller, and the upper pinching roller and the lower pinching roller are installed on the pinching seat.

[0011] The upper roller lifting mechanism comprises a hydraulic cylinder, a guide rod and an upper roller mounting frame, the hydraulic cylinder is mounted on the upper part of the frame, the upper roller mounting frame is connected to the piston rod of the hydraulic cylinder, the upper roller mounting frame is provided with a guide rod, and the upper roller is mounted on the upper roller mounting frame.

[0012] The upper roller 6 is olive-shaped, and its outer diameter gradually decreases from the middle to both sides.

[0013] The lower roller may be in a sub-waist shape (a downwardly concave V-shape), with the outer diameter gradually increasing from the middle to both sides. The lower roller may also be provided in two symmetrical groups, with the two groups of lower rollers being relatively inclined downward.

[0014] The whole device is connected to the leveling units used before and after it through a connecting beam to enhance the firmness of the whole device. The high-strength steel plate with the turtle back facing upward enters between the upper roller and the lower roller. The upper roller is pressed on the high-strength steel plate by the upper roller lifting mechanism and forms sufficient pressure to make the steel plate plastically deformed in the width direction. Then it enters the leveling machine through the clamping mechanism. Through repeated bending and leveling by the leveling machine, the stress inside the high-strength steel plate is further released, avoiding the steel plate from re-forming a turtle back due to excessive stress concentration after passing through the leveling machine.

[0015] The present invention achieves or nearly achieves the purpose of eliminating the turtle back phenomenon of the steel plate by cooperating with the upper roller and the lower roller to cause plastic deformation of the high-strength steel plate in the width direction, thereby avoiding the rebound of the turtle back due to elastic deformation; at the same time, the turtle back is pressed to bend in the reverse direction, and a large amount of stress concentrated at the turtle back is released, thereby completely changing the shape of the steel plate in the width direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the reverse bending device of the high-strength steel plate of the present invention.

[0017] Figure 2 yes Figure 1 Left view of .

[0018] Among them: 1. Connecting beam, 2. Feeding plate, 3. Pinch seat, 4. Guide rod, 5. Hydraulic cylinder, 6. Upper roller, 7. Frame, 8. Lower roller, 9. Upper roller mounting frame, 10. Upper pinch roller, 11. Lower pinch roller, 12. High-strength steel plate. DETAILED DESCRIPTION

[0019] like Figure 1 and 2 As shown, the reverse bending device of the high-strength steel plate of the present invention comprises a frame 7, an upper roller 6, an upper roller lifting mechanism and a lower roller 8. The upper roller lifting mechanism is arranged on the upper part of the frame 7, the upper roller 6 is connected to the upper roller lifting mechanism, and the lower roller 8 is installed at the lower part of the frame 7.

[0020] A connecting beam 1 is provided on the frame 7 below the lower roller 8 for connecting the front and rear units so that the front and rear units are connected to the device as a whole, thereby enhancing the firmness of the device.

[0021] A feeding plate 2 is provided on the frame 7 at the feeding side so that the steel plate can smoothly enter between the upper roller 6 and the lower roller 8.

[0022] A pinching mechanism is provided on the discharging side of the frame 7 to provide support for the high-strength steel plate 12 after being deformed by the upper roller 6 and the lower roller 8, and to provide power for the high-strength steel plate 12 to move forward. The pinching mechanism includes a pinching seat 3, an upper pinching roller 10 and a lower pinching roller 11, and the upper pinching roller 10 and the lower pinching roller 11 are installed on the pinching seat 3.

[0023] The upper roller lifting mechanism includes a hydraulic cylinder 5, a guide rod 4 and an upper roller mounting frame 9. The hydraulic cylinder 5 is installed on the upper part of the frame 7, with its piston rod facing downward. The upper roller mounting frame 9 is connected to the piston rod of the hydraulic cylinder 5. A guide rod 4 is provided on both sides of the piston rod of the hydraulic cylinder 5 on the upper roller mounting frame 9. The guide rod 4 is sleeved in the guide sleeve on the frame 7, and the lower end is connected to the upper roller mounting frame 9. The hydraulic cylinder 5 provides driving force for the lifting of the upper roller 6. A high-pressure hydraulic cylinder is used to provide sufficient pressure to ensure that the high-strength steel plate 12 can be pressed down into place and cannot rebound. The guide rod 4 is a high-strength guide column, which plays a guiding role in the lifting of the upper roller 6, provides strong support during the deformation and advancement of the high-strength steel plate 12, and prevents the position of the upper roller 6 from shifting. Both ends of the upper roller 6 are mounted on the upper roller mounting frame 9 through bearings.

[0024] See also Figure 2 The upper roller 6 is olive-shaped, with its outer diameter gradually decreasing from the middle to both sides. The lower roller 8 is installed at the lower part of the frame 7 through a bearing. The shape of the lower roller 8 matches that of the upper roller 6 to achieve the purpose of causing plastic deformation of the steel plate in the width direction. On the one hand, the lower roller 8 can be concave, with its outer diameter gradually increasing from the middle to both sides; on the other hand, Figure 2 As shown, two symmetrical groups of lower rollers 8 are arranged, which are relatively inclined downward, and a concave V-shape is formed between the two groups of lower rollers 8. In this way, the upper roller 6 and the lower roller 8 cooperate with each other to deform the steel plate in the width direction, thereby achieving the purpose of improving the plate shape and relieving stress.

[0025] The above device is used synchronously with the leveling machine, and its operation process is described as follows.

[0026] The whole device is connected with the leveling units used before and after it by the connecting beam 1 to enhance the firmness of the whole device.

[0027] The high-strength steel plate 12 with its turtle back facing upward is conveyed between the upper roller 6 and the lower roller 8. Driven by the hydraulic cylinder 5, the upper roller 6 moves downward to press on the high-strength steel plate 12 and forms sufficient pressure. Through the cooperation of the upper roller 6 and the lower roller 8, the steel plate is plastically deformed in the width direction, and the shape of the steel plate in the width direction is completely changed to avoid the rebound of the turtle back due to elastic deformation, thereby achieving or nearly eliminating the turtle back phenomenon of the steel plate. At the same time, the turtle back is pressed to bend in the opposite direction, and a large amount of stress concentrated on the turtle back is released.

[0028] The high-strength steel plate 12 deformed by the upper roller 6 and the lower roller 8 enters the clamping mechanism, is supported by the upper clamping roller 10 and the lower clamping roller 11, and provides forward power, and enters the subsequent leveling machine. Through repeated bending and leveling by the leveling machine, the stress inside the high-strength steel plate is further released, avoiding the reformation of a turtle back due to excessive stress concentration after the steel plate passes through the leveling machine.

[0029] The above-mentioned device can significantly improve the turtleback phenomenon of high-strength steel plates. It can meet the needs of most users after one treatment, basically solving the thorny problem of turtleback and changing the current situation where ordinary steel plate Kaiping production lines cannot solve the turtleback phenomenon.

Claims

1. A high-strength steel plate bending device, characterized in that: The utility model comprises a frame, an upper roller, an upper roller lifting mechanism and a lower roller. The upper roller lifting mechanism is arranged on the upper part of the frame, the upper roller is connected to the upper roller lifting mechanism, and the lower roller is installed on the lower part of the frame.

2. The high-strength steel plate bending device according to claim 1, characterized in that: The frame is provided with a connecting beam.

3. The high-strength steel plate bending device according to claim 1, characterized in that: A feeding plate is arranged on the frame at the feeding side.

4. The high-strength steel plate bending device according to claim 1, characterized in that: The frame is provided with a clamping and conveying mechanism on the discharging side.

5. The high-strength steel plate bending device according to claim 4, characterized in that: The pinching mechanism comprises a pinching seat, an upper pinching roller and a lower pinching roller, wherein the upper pinching roller and the lower pinching roller are installed on the pinching seat.

6. The high-strength steel plate reverse bending device according to claim 1, characterized in that: The upper roller lifting mechanism comprises a hydraulic cylinder, a guide rod and an upper roller mounting frame, the hydraulic cylinder is mounted on the upper part of the frame, the upper roller mounting frame is connected to the piston rod of the hydraulic cylinder, the upper roller mounting frame is provided with a guide rod, and the upper roller is mounted on the upper roller mounting frame.

7. The high-strength steel plate reverse bending device according to claim 1, characterized in that: The upper roller is olive-shaped, and its outer diameter gradually decreases from the middle to both sides.

8. The high-strength steel plate reverse bending device according to claim 1, characterized in that: The lower roller is in a waist shape, and the outer diameter gradually increases from the middle to both sides.

9. The high-strength steel plate reverse bending device according to claim 1, characterized in that: The lower rollers are arranged in two symmetrical groups, and the two groups of lower rollers are inclined downward relative to each other.

Images