Modeling and bending device for steel structure

By designing a steel structure molding bending device with automatic positioning and inner movement mechanism, the problem of inefficient mold replacement is solved, the stability and efficient disassembly of the upper and lower molds are achieved, and the accuracy and smoothness of the bending process are ensured.

CN120243701AInactive Publication Date: 2025-07-04JIANGSU LONGLAI CONSTR ENG CO LTD
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Patent Information

Application Number
CN202510599068.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-10
Publication Date
2025-07-04
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When replacing molds of different specifications of steel structures, the upper and lower double modes need to be disassembled one by one, resulting in low disassembly efficiency and delaying the bending progress of the bending device.

Method used

A steel structure modeling bending device is designed. By automatically positioning the upper and lower mold structures when the upper mold structure is lowered, and automatically entering a preparatory state for easy disassembly in the restored state, the inward movement of the steel structure is restricted by the inward movement mechanism of the clamping limit seat and the clamping limit roller to avoid deviation during the bending process.

Benefits of technology

It realizes intelligent positioning and convenient disassembly of upper and lower molds, improves disassembly efficiency, ensures the stability and accuracy of the bending process, and avoids the inefficiency problem during mold replacement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a modeling bending device for a steel structure, and relates to the technical field of bending, the modeling bending device comprises a bending main body, the top of the bending main body is fixedly provided with a loading guide rail; auxiliary bearing rollers are rotationally mounted on the left side and the right side of the top of the bending body. Clamping limiting seats are slidably mounted on the left side and the right side of the top end in the bending body. The clamping limiting seat is of an L-shaped structure. When the upper die structure prepares to punch and bend a steel structure, the device can automatically and accurately position the upper die structure and the lower die structure, and the operation stability is ensured. When the upper mold structure returns to the non-working state, the upper mold and the lower mold automatically enter a preparation state easy to disassemble, the mold can be easily replaced only through simple sliding, and the problems that when molds of different specifications need to be replaced, workers need to disassemble the upper mold and the lower mold one by one, the process steps are tedious, the disassembly efficiency is low, and the disassembly cost is high are solved. And the bending progress of the bending device is delayed.
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Description

Technical Field

[0001] The present invention relates to the technical field of bending, and particularly to a profiling bending device for steel structures. Background Art

[0002] Since the processing of steel structures needs to meet diverse application requirements, ensure the stability and safety of the structure, and pursue a high-efficiency and low-cost production mode, a bending device is used for profiling bending. However, in the existing steel structure profiling devices, the profiling molds used for cooperation in bending are usually fixed at predetermined positions by bolts. Most of these molds are designed as an upper and lower double-mold structure, and the fixing positions of the double molds are independent of each other. Therefore, when it is necessary to replace molds of different specifications, the staff needs to disassemble the upper and lower double molds one by one. This process is cumbersome, resulting in low disassembly efficiency and delaying the bending progress of the bending device. Summary of the Invention

[0003] The embodiment of the present disclosure relates to a profiling bending device for steel structures. Through structural improvements, the bending device can automatically position the upper die structure and the lower die structure when the upper die structure descends in preparation for stamping and bending the steel structure, and when the upper die structure returns to the non-use state, the upper and lower double molds will automatically enter the state of being ready for disassembly. Only by sliding the upper and lower double molds can they be disassembled and replaced. In this way, not only the stability of the upper and lower double molds during operation is ensured, but also the problem of low disassembly efficiency will not occur. Compared with the traditional method of disassembling the upper and lower double molds step by step, it is simpler and more convenient; before the upper die structure descends in preparation for stamping and bending the steel structure, the bending device can, through structural cooperation, convert the downward force of the upper die structure into an inward force and provide it to the clamping and limiting seat, so that it drives the clamping and limiting seat and the clamping and limiting rollers to move inward, and the clamping and limiting rollers limit the forward and backward movement of the steel structure through inward movement, thereby avoiding the situation that the steel structure moves forward and backward during the bending process and affects the bending profile. And since the clamping and limiting rollers are rotatably arranged, they will not conflict with the deformation of the steel structure during the bending process.

[0004] In the first aspect of the present disclosure, a shaping and bending device for a steel structure is provided, specifically including: a bending main body, on the top of which a loading guide rail is fixedly installed; on the left and right sides of the top of the bending main body, auxiliary supporting rollers are rotatably installed; on the left and right sides of the inner top of the bending main body, clamping and limiting seats are slidably installed; the clamping and limiting seats are in an L-shaped structure; at the inner top of the clamping and limiting seats, clamping and limiting rollers are rotatably installed; the clamping and limiting rollers are located on the front and rear sides of the auxiliary supporting rollers; on the outer top of the clamping and limiting seats, force-receiving driven blocks are fixedly installed; the force-receiving driven blocks are in a trapezoidal structure; at the bottom of the clamping and limiting seats, embedded baffles are fixedly installed; between each group of the embedded baffles, a restoring spring A is fixedly installed; at the rear side of the top of the loading guide rail, a guiding vertical rod is fixedly installed; a guiding sliding sleeve is sleeved and slidably installed on the guiding vertical rod; between the bottom of the guiding sliding sleeve and the top of the loading guide rail, a restoring spring B is jointly embedded; at the front end of the guiding sliding sleeve, a plugging plate is fixedly installed; the loading guide rail and the top of the bending main body jointly slidably install a lower die structure; at the rear side of the lower die structure, a plugging convex block is fixedly installed; on the plugging convex block, a plugging card slot is opened; the plugging card slot is located below the plugging plate; at the rear side of the bending main body, two L-shaped upper die bearing plates are fixedly installed.

[0005] In at least some embodiments, the guiding sliding sleeve is also slidably connected to the upper die bearing plate; on the top of the upper die bearing plate, a bending pushing cylinder is fixedly installed; on the output end of the bending pushing cylinder, an upper die mounting plate is fixedly installed; on the front and rear sides of the top of the upper die mounting plate, positioning pushing plates are fixedly installed.

[0006] In at least some embodiments, the positioning pushing plates are located above the force-receiving driven blocks; on the bottom of the upper die mounting plate, a mounting guide rail is fixedly installed; the overall shape of the mounting guide rail is an inverted T-shaped structure, and a rectangular blocking plate is arranged at the right end of the mounting guide rail.

[0007] In at least some embodiments, an upper die structure is slidably installed on the mounting guide rail; a limiting card slot is opened at the rear side of the upper die structure; at the rear side of the bottom of the upper die mounting plate, a lower pressing plate is fixedly installed.

[0008] In at least some embodiments, the lower pressing plate is located above the plugging plate; a limiting card member is slidably installed on the lower pressing plate; the limiting card member is in a U-shaped structure, and the rear end of the limiting card member is inclined.

[0009] In at least some embodiments, a restoring spring C is jointly embedded between the inside of the limiting card member and the rear side wall of the lower pressing plate; the position of the limiting card member is horizontally corresponding to the position of the limiting card slot in the front and rear directions.

[0010] In at least some embodiments, an inclined plane converter is fixedly installed at the rear side of the upper die carrier plate; the inner top end of the inclined plane converter is of an inclined structure; the inclined plane of the limit clamping member is in fitting contact with the inclined plane of the inclined plane converter.

[0011] In at least some embodiments, after the bending push cylinder drives the upper die mounting plate to descend, the lower pressing plate on the upper die mounting plate will push against the top end of the plug-in plate; after the top end of the plug-in plate is pushed, it will descend and insert the bottom end of itself into the inside of the plug-in card slot.

[0012] In at least some embodiments, after the upper die mounting plate descends, the bottom end of the positioning push plate will push against the inclined plane of the force-bearing driven block before the upper die structure contacts the steel structure; after the inclined plane of the force-bearing driven block is pushed, it will drive the clamping limit seat and the clamping limit roller to move inward.

[0013] In at least some embodiments, after the upper die mounting plate moves downward, the limit clamping member will convert the descending force into a forward moving force under the cooperation of the inclined plane of the inclined plane converter; after the limit clamping member moves forward, it will insert into the inside of the limit card slot.

[0014] The present invention provides a shaping and bending device for steel structures, which has the following beneficial effects: (1) Through innovative structural design, this bending device realizes the intelligent positioning and convenient disassembly of the upper and lower die structures. When the upper die structure is ready to stamp and bend the steel structure, the device can automatically and accurately position the upper and lower die structures to ensure the stability of the operation. When the upper die structure returns to the non-working state, the upper and lower dies automatically enter a preparatory state that is easy to disassemble. At this time, the mold can be easily replaced by simply sliding, greatly improving the disassembly efficiency, which is more convenient and faster than the traditional step-by-step disassembly method.

[0015] (2) This device also has a unique clamping mechanism. Before the upper die structure descends, its descending force is cleverly converted into an inward moving force, driving the clamping limit seat and the clamping limit roller on it to move inward, effectively restricting the forward and backward movement of the steel structure, avoiding deviation during the bending process, and ensuring the accuracy of the bending shape. It is worth mentioning that the clamping limit roller is designed to be rotatable, so it will not interfere with the natural deformation of the steel structure during the bending process, ensuring the smoothness and efficiency of the bending process. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The following drawings in the description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings: Figure 1Shows the schematic structural diagram of the placement state of the steel structure workpiece of the present application; Figure 2 Shows the Figure 1 schematic structural diagram of the rear view angle; Figure 3 Shows the schematic structural diagram of the bending main body and the upper die carrier plate of the present application; Figure 4 Shows the Figure 3 schematic structural diagram of the rear view angle; Figure 5 Shows the schematic structural diagram of the bending main body and the upper die mounting plate of the present application; Figure 6 Shows the schematic semi-sectional structural diagram of the upper die carrier plate of the present application; Figure 7 Shows the schematic structural diagram of the disassembled state of the upper die structure of the present application; Figure 8 Shows the Figure 7 schematic structural diagram of the rear view angle; List of reference numerals 1. Bending main body; 2. Loading guide rail; 3. Auxiliary supporting roller; 4. Clamping limit seat; 5. Clamping limit roller; 6. Force-receiving driven block; 7. Embedded baffle; 8. Restoration spring A; 9. Guide vertical rod; 10. Guide sliding sleeve; 11. Restoration spring B; 12. Plug-in board; 13. Lower die structure; 14. Plug-in convex block; 15. Plug-in card slot; 16. Upper die carrier plate; 17. Bending push cylinder; 18. Upper die mounting plate; 19. Positioning push plate; 20. Installation guide rail; 21. Upper die structure; 22. Limit card slot; 23. Lower pressing plate; 24. Limit card part; 25. Restoration spring C; 26. Inclined plane conversion part. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0020] Please refer to Figures 1 to 8 : Embodiment 1: The present invention provides a shaping and bending device for steel structures, including: a bending main body 1, on the top of which a loading guide rail 2 is fixedly installed; on the left and right sides of the top of the bending main body 1, auxiliary bearing rollers 3 are rotatably installed; on the left and right sides of the inner top of the bending main body 1, clamping limit seats 4 are slidably installed; the clamping limit seats 4 are in an L-shaped structure; at the inner top of the clamping limit seats 4, clamping limit rollers 5 are rotatably installed; the clamping limit rollers 5 are located on the front and rear sides of the auxiliary bearing rollers 3; on the outer top of the clamping limit seats 4, force-receiving driven blocks 6 are fixedly installed; the force-receiving driven blocks 6 are in a trapezoidal structure; at the bottom of the clamping limit seats 4, embedded baffles 7 are fixedly installed; between each group of embedded baffles 7, a restoring spring A8 is fixedly installed; at the rear side of the top of the loading guide rail 2, a guiding vertical rod 9 is fixedly installed; a guiding sliding sleeve 10 is sleeved and slidably installed on the guiding vertical rod 9; between the bottom of the guiding sliding sleeve 10 and the top of the loading guide rail 2, a restoring spring B11 is jointly embedded; at the front end of the guiding sliding sleeve 10, a plug-in board 12 is fixedly installed; the loading guide rail 2 and the top of the bending main body 1 jointly slidably install a lower die structure 13; at the rear side of the lower die structure 13, a plug-in convex block 14 is fixedly installed; on the plug-in convex block 14, a plug-in card slot 15 is opened; the plug-in card slot 15 is located below the plug-in board 12; at the rear side of the bending main body 1, two L-shaped upper die bearing plates 16 are fixedly installed. This bending device can automatically position the upper die structure 21 and the lower die structure 13 when the upper die structure 21 descends and is ready to stamp and bend the steel structure. When the upper die structure 21 is restored to a non-use state, the upper and lower dies will automatically enter a state ready for disassembly. Just slide the upper and lower dies to disassemble and replace them. In this way, it not only ensures the stability of the upper and lower dies during operation but also does not have the problem of low disassembly efficiency. It is simpler and more convenient than the traditional method of disassembling the upper and lower dies step by step. By placing the steel structure workpiece to be bent on the two auxiliary bearing rollers 3, the steel structure workpiece is located between the upper die structure 21 and the lower die structure 13. Then, by starting the bending push cylinder 17, the bending push cylinder 17 drives the upper die mounting plate 18, the positioning push plate 19, and the upper die structure 21 to move downward. Before the upper die structure 21 descends and contacts the steel structure workpiece, the bottom end of the positioning push plate 19 will contact and push the inclined surface of the force-receiving driven block 6 in advance, causing it to move inward with the clamping limit seat 4 and the clamping limit roller 5, so that the clamping limit roller 5 contacts the front and rear surfaces of the workpiece, and positions the workpiece in the front and rear directions.

[0021] Embodiment 2: On the basis of Embodiment 1, the guiding sliding sleeve 10 is also slidably connected to the upper die bearing plate 16; a bending push cylinder 17 is fixedly installed on the top of the upper die bearing plate 16; an upper die mounting plate 18 is fixedly installed on the output end of the bending push cylinder 17; positioning push plates 19 are fixedly installed on the front and rear sides of the top of the upper die mounting plate 18; the positioning push plates 19 are located above the force-receiving driven block 6; an installation guide rail 20 is fixedly installed on the bottom of the upper die mounting plate 18; the overall shape of the installation guide rail 20 is an inverted T-shaped structure, and a rectangular blocking plate is arranged at the right end of the installation guide rail 20; an upper die structure 21 is slidably installed on the installation guide rail 20; a limiting card slot 22 is formed at the rear side of the upper die structure 21; a lower pressing plate 23 is fixedly installed on the rear side of the bottom of the upper die mounting plate 18; the lower pressing plate 23 is located above the insertion plate 12; a limiting card member 24 is slidably installed on the lower pressing plate 23; the limiting card member 24 is in a U-shaped structure, and the rear end of the limiting card member 24 is inclined. Before the upper die structure 21 descends to prepare for stamping and bending the steel structure, this bending device can convert the descending force of the upper die structure 21 into an inward movement force through structural cooperation and provide it to the clamping and limiting seat 4, so that it drives the clamping and limiting seat 4 and the clamping and limiting roller 5 to move inward, and the clamping and limiting roller 5 restricts the front and rear movement of the steel structure through inward movement, thereby avoiding the situation that the steel structure moves back and forth during the bending process and affects the bending shape. And because the clamping and limiting roller 5 is rotatably arranged, it will not conflict with the deformation of the steel structure during the bending process. After the upper die mounting plate 18 descends, the lower pressing plate 23 on the upper die mounting plate 18 will press down the top of the insertion plate 12, so that the insertion plate 12 inserts the bottom end of itself into the inside of the insertion card slot 15 through the downward pressure, thereby positioning the lower die structure 13 before the lower die structure 13 is put into use.

[0022] Embodiment 3, on the basis of Embodiment 2, a restoring spring C25 is jointly embedded between the interior of the limit clamping member 24 and the rear side wall of the lower pressing plate 23; the position of the limit clamping member 24 corresponds horizontally before and after to the position of the limit clamping groove 22; a slope conversion member 26 is fixedly installed at the rear side of the upper die bearing plate 16; the inner top end of the slope conversion member 26 is of an inclined structure; the slope of the limit clamping member 24 is in fitting contact with the slope of the slope conversion member 26; after the bending push cylinder 17 drives the upper die mounting plate 18 to descend, the lower pressing plate 23 on the upper die mounting plate 18 will push against the top end of the plug-in plate 12; after the top end of the plug-in plate 12 is pushed, it will descend and insert its bottom end into the interior of the plug-in card slot 15; after the upper die mounting plate 18 descends, the bottom end of the positioning push plate 19 will push against the slope of the force-receiving driven block 6 before the upper die structure 21 contacts the steel structure; after the slope of the force-receiving driven block 6 is pushed, it will drive the clamping limit seat 4 and the clamping limit roller 5 to move inward; after the upper die mounting plate 18 moves downward, the limit clamping member 24 will convert the descending force into a forward moving force under the cooperation of the slope of the slope conversion member 26; after the limit clamping member 24 moves forward, it will insert into the interior of the limit clamping groove 22. When the upper die mounting plate 18 descends, it will also drive the lower pressing plate 23 and the limit clamping member 24 to descend. At this time, the limit clamping member 24 will use the slope of itself to cooperate with the slope of the slope conversion member 26 to convert the descending force into a forward moving force, causing the limit clamping member 24 to start moving forward and insert into the interior of the limit clamping groove 22, so as to position the upper die structure 21 before the upper die structure 21 is put into use. At this time, the bending push cylinder 17 continues to drive the upper die structure 21 to descend, making it contact and push against the steel structure workpiece, so that the steel structure workpiece is affected by the pushing force of the upper die structure 21 and cooperates with the lower die structure 13 to complete the bending shaping work.

[0023] Working principle of this embodiment: During use, place the steel structure workpiece to be bent on the two auxiliary supporting rollers 3, so that the steel structure workpiece is located between the upper die structure 21 and the lower die structure 13. Then, start the bending push cylinder 17, so that the bending push cylinder 17 drives the upper die mounting plate 18, the positioning push plate 19 and the upper die structure 21 to move downward. Before the upper die structure 21 descends and contacts the steel structure workpiece, the bottom end of the positioning push plate 19 will contact and push the inclined surface of the force-receiving driven block 6 in advance, so that it is forced to drive the clamping limit seat 4 and the clamping limit roller 5 to move inward, so that the clamping limit roller 5 contacts the front and rear surfaces of the workpiece, and positions the workpiece in the front and rear directions. And after the upper die mounting plate 18 descends, the lower pressing plate 23 on the upper die mounting plate 18 will press down the top of the plug-in plate 12, so that the plug-in plate 12 inserts its bottom end into the inside of the plug-in card slot 15 by means of the downward pressure, so as to position the lower die structure 13 before the lower die structure 13 is put into use. Moreover, when the upper die mounting plate 18 descends, it will also drive the lower pressing plate 23 and the limit card 24 to descend. At this time, the limit card 24 will use the inclined surface of itself to cooperate with the inclined surface of the inclined surface conversion part 26 to convert the descending force into a forward moving force, so that the limit card 24 starts to move forward and inserts into the inside of the limit card slot 22, so as to position the upper die structure 21 before the upper die structure 21 is put into use. At this time, the bending push cylinder 17 continues to drive the upper die structure 21 to descend, so that it contacts and pushes the steel structure workpiece, so that the steel structure workpiece is affected by the pushing force of the upper die structure 21 and cooperates with the lower die structure 13 to complete the bending shaping work.

[0024] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0025] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0026] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. Steel structure modeling bending device, comprising: Bending main body (1), on the top of the bending main body (1), a loading guide rail (2) is fixedly installed; on the left and right sides of the top of the bending main body (1), auxiliary bearing rollers (3) are rotatably installed; it is characterized in that, on the left and right sides of the inner top end of the bending main body (1), clamping limit seats (4) are slidably installed; the clamping limit seats (4) are in an L-shaped structure; at the inner top end of the clamping limit seats (4), clamping limit rollers (5) are rotatably installed; the clamping limit rollers (5) are located on the front and back sides of the auxiliary bearing rollers (3); on the outer top end of the clamping limit seats (4), force-receiving driven blocks (6) are fixedly installed; the force-receiving driven blocks (6) are in a trapezoidal structure; at the bottom of the clamping limit seats (4), embedded baffles (7) are fixedly installed; between each group of the embedded baffles (7), a restoring spring A (8) is fixedly installed. On the rear side of the top of the loading guide rail (2), a guiding vertical rod (9) is fixedly installed; on the guiding vertical rod (9), a guiding sliding sleeve (10) is sleeved and slidably installed; between the bottom of the guiding sliding sleeve (10) and the top of the loading guide rail (2), a restoring spring B (11) is jointly embedded; at the front end of the guiding sliding sleeve (10), a plug-in board (12) is fixedly installed; on the top of the loading guide rail (2) and the top of the bending main body (1), a lower die structure (13) is slidably installed; at the rear side of the lower die structure (13), a plug-in convex block (14) is fixedly installed; on the plug-in convex block (14), a plug-in card slot (15) is opened; the plug-in card slot (15) is located below the plug-in board (12); on the rear side of the bending main body (1), two L-shaped upper die bearing plates (16) are fixedly installed.

2. The shaping and bending device for steel structures according to claim 1, characterized in that, The guiding sliding sleeve (10) is also slidably connected to the upper die bearing plate (16); on the top of the upper die bearing plate (16), a bending pushing cylinder (17) is fixedly installed; on the output end of the bending pushing cylinder (17), an upper die mounting plate (18) is fixedly installed; on the front and back sides of the top of the upper die mounting plate (18), positioning pushing plates (19) are fixedly installed.

3. The profiling and bending device for steel structures according to claim 2, characterized in that, The positioning pushing plates (19) are located above the force-receiving driven blocks (6); on the bottom of the upper die mounting plate (18), an installation guide rail (20) is fixedly installed; the overall shape of the installation guide rail (20) is an inverted T-shaped structure, and a rectangular blocking plate is arranged at the right end of the installation guide rail (20).

4. The profiling and bending device for steel structures according to claim 3, characterized in that, On the installation guide rail (20), an upper die structure (21) is slidably installed; on the rear side of the upper die structure (21), a limit card slot (22) is opened; on the rear side of the bottom of the upper die mounting plate (18), a lower pressing plate (23) is fixedly installed.

5. The profiling and bending device for steel structures according to claim 4, characterized in that, The lower pressing plate (23) is located above the plug-in board (12); on the lower pressing plate (23), a limit card member (24) is slidably installed; the limit card member (24) is in a U-shaped structure, and the rear end of the limit card member (24) is inclined.

6. The profiling and bending device for steel structures according to claim 5, characterized in that, Between the inside of the limit card member (24) and the rear side wall of the lower pressing plate (23), a restoring spring C (25) is jointly embedded; the position of the limit card member (24) corresponds horizontally to the position of the limit card slot (22) front and back.

7. The shaping and bending device for steel structures according to claim 6, characterized in that, A slope conversion member (26) is fixedly installed at the rear side of the upper die carrier plate (16); the inner top end of the slope conversion member (26) is of an inclined structure; the slope of the limit clamping member (24) is in close contact with the slope of the slope conversion member (26).

8. The profiling bending device for steel structures according to claim 7, characterized in that, After the bending push cylinder (17) drives the upper die mounting plate (18) to descend, the lower pressing plate (23) on the upper die mounting plate (18) will push against the top end of the plug-in plate (12); after the top end of the plug-in plate (12) is pushed, it will descend and insert the bottom end of itself into the inside of the plug-in card slot (15).

9. The shaping and bending device for steel structures according to claim 8, characterized in that, After the upper die mounting plate (18) descends, the bottom end of the positioning push plate (19) will push against the slope of the force-bearing driven block (6) before the upper die structure (21) contacts the steel structure; after the slope of the force-bearing driven block (6) is pushed, it will drive the clamping limit seat (4) and the clamping limit roller (5) to move inwards.

10. The shaping and bending device for steel structures according to claim 9, characterized in that, After the upper die mounting plate (18) moves downwards, the limit clamping member (24) will convert the descending force into a forward movement force under the cooperation of the slope of the slope conversion member (26); after the limit clamping member (24) moves forward, it will insert into the inside of the limit card slot (22).