Steel structure machining bending machine and bending method thereof

Abstract

The invention provides a steel structure machining bending machine and a bending method thereof, and relates to the technical field of bending equipment. The middle part of the bottom frame is fixedly provided with a middle vertical frame vertically upwards; a horizontal I-shaped fixed bracket is transversely and fixedly mounted on the bottom frame on one side of the middle vertical frame; a horizontal fixing table is fixedly installed at the upper end of the fixing bracket, a bending table is rotatably installed at the inner end of the fixing table through a rotating hinge shaft, and the bending table and the fixing table are consistent in structure. According to the device, the clamping motor drives the double-end lead screw to drive the clamping plate to achieve automatic clamping of a workpiece, meanwhile, the unique shifting rod and shifting disc linkage mechanism is utilized, the clamping action and feeding drive of the bending roller are seamlessly connected, automatic linkage of clamping and feeding is achieved, the operation efficiency is greatly improved, and feeding synchronism is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bending equipment technology, and in particular to a steel structure processing bending machine and its bending method. Background Technology

[0002] In steel structure manufacturing, bending of square and rectangular tubes is a common but technically demanding process. Traditional bending processes mostly use hydraulic or mechanical bending equipment, which generally suffers from problems such as cumbersome adjustments, low automation, and reliance on operator experience for processing accuracy. Especially when processing different bending curvatures, it often requires changing molds or making complex mechanical adjustments, resulting in low production efficiency and difficulty in ensuring product consistency. Furthermore, the feeding and bending actions of existing equipment are often independent, lacking coordinated control, which can easily lead to material slippage or uneven deformation during processing. For bending angle control, most equipment still relies on mechanical limits or manual visual inspection, making precise digital control difficult and unable to meet increasingly stringent processing quality requirements. Summary of the Invention

[0003] This invention relates to a steel structure processing bending machine and its bending method, which integrates automation, high precision, and high flexibility, effectively solving many pain points in traditional bending processing and has extremely high market promotion value.

[0004] This invention provides a steel structure processing bending machine and its bending method, specifically including: a base frame; a central upright frame is vertically fixedly installed in the middle of the base frame; and a horizontally fixed "I"-shaped fixing bracket is horizontally fixedly installed on the base frame on one side of the central upright frame. A horizontal fixed platform is fixedly installed at the upper end of the fixed bracket. A bending table is rotatably installed at the inner end of the fixed platform via a rotating hinge. The bending table has the same structure as the fixed platform. A bending cylinder is rotatably installed between the end of the bending table and the bottom end of the base frame. The root of the bending cylinder is rotatably connected to the base frame via a rotating shaft. The piston end of the bending cylinder is rotatably connected to the bending platform via a rotating shaft. A pressure seat is fixedly installed on the bending platform and the fixed platform respectively by bolts. A clamping seat is fixedly installed on the outer side of the pressure seat. The clamping seat is equipped with a clamping mechanism for clamping. The mechanism is used to clamp the steel square tube to be bent; a feed motor is fixedly installed on one side of the upper end of the central frame, and a bending roller is rotatably installed between the upper ends of the central frame. The feed motor drives the bending roller to rotate, and the bending roller is provided with a feed component that cooperates with the clamping mechanism; a controller is also hung on one side of the central frame; an angle detection sensor is fixedly installed on the bending table near the rotation hinge axis. The angle detection sensor is used to detect the flip angle of the bending table, send data to the controller for processing, and feed back to the bending cylinder to control the flipping of the bending table.

[0005] Optionally, both sides of the fixed platform and the bending platform are provided with evenly spaced arc adjustment holes, and the two arc adjustment holes correspond to a bending arc of 5 degrees for the steel structure square tube to be bent.

[0006] Optionally, an arc-shaped sensor detection base plate is provided at the position corresponding to the circumference of the bending roller on the upper inner side of the central frame. The sensor detection base plate is located on the side close to the bending table. The angle detection sensor moves along the sensor detection base plate during the rotation of the bending table. The sensor detection base plate is provided with a detection module that cooperates with the angle detection sensor.

[0007] Optionally, the feeding assembly includes a dial, a retaining ring, and anti-slip protrusions. The dial is symmetrically mounted on the bending roller, sliding left and right. The dial walls opposite each other have evenly spaced anti-slip protrusions distributed in a ring. A retaining ring is fixedly provided in a ring on the outer wall of the dial. The retaining ring edge and the dial form a retaining groove. A horizontal lever is provided between the two clamping mechanisms. The lever slides between the retaining grooves. When the two clamping mechanisms clamp the steel square tube to be bent, the lever also drives the dial to move inward to clamp the steel square tube to be bent. During the rotation, the friction provided by the anti-slip protrusions drives the steel square tube to be fed.

[0008] Optionally, a pressure roller is installed laterally in the pressure base, so that the steel square tube to be bent passes over the pressure roller and under the bending roller, and the four corner bolt holes of the pressure base are fixedly installed in the corresponding arc adjustment holes by bolts.

[0009] Optionally, the clamping mechanism includes a guide rail, a clamping motor, a double-ended lead screw, and clamping plates. A T-shaped guide rail with an upward protrusion is fixedly installed laterally on the clamping seat. Two clamping plates are slidably clamped on the guide rail. The double-ended lead screw is rotatably installed laterally at the upper end of the clamping seat. Each clamping plate is vertically and rotatably screwed to the corresponding lead of the double-ended lead screw. The clamping motor is fixedly installed on one side of the upper end of the clamping seat. The rotating shaft of the clamping motor is fixedly connected to the double-ended lead screw through a coupling.

[0010] Optionally, the upper end of the clamping plate on the fixed platform is fixedly connected to one end of the lever.

[0011] Optionally, the clamping plate on the bending table has a vertical through-hole, and the other end of the lever slides through the through-hole.

[0012] A bending method for a steel structure processing bending machine includes the following steps: Step 1: Place the steel square tube to be bent on the pressure base of the fixed platform and the bending platform, and make the square tube pass over the pressure roller and under the bending roller; Step 2: Start the clamping mechanism. Drive the double-headed lead screw to rotate through the clamping motor, which will cause the two clamping plates to move towards each other along the guide rail and clamp the two ends of the square tube. At the same time, the clamping plates on the fixed platform will drive the lever to move, so that the lever can be engaged in the slot between the retaining rings of the dial on the bending roller. Step 3: Start the feed motor to drive the bending roller to rotate, and the square tube will be continuously fed by the friction between the anti-slip protrusions on the dial and the square tube; Step 4: Start the bending cylinder to push the bending table to rotate around the pivot axis and bend the square tube; Step 5: The angle detection sensor detects the flip angle of the bending table and sends the data to the controller. The controller controls the stroke of the bending cylinder according to the set value to achieve precise control of the bending angle.

[0013] A bending method for a steel structure processing bending machine, in step one, by selecting the installation positions of the fixed table and the arc adjustment holes on both sides of the bending table, the spacing of the pressure seat is adjusted to adapt to the requirements of different bending arcs; In step five, the angle detection sensor moves along the sensor detection substrate as the bending table flips, and the angle signal is fed back in real time through the detection module on the sensor detection substrate; In step two, the clamping plate on the bending table slides with the lever through the movable hole to avoid interfering with the flipping action of the bending table.

[0014] This invention provides a steel structure processing bending machine and its bending method, which has the following beneficial effects: First, the equipment uses a clamping motor to drive a double-headed lead screw to move the clamping plate to automatically clamp the workpiece. At the same time, it uses a unique lever and dial linkage mechanism to seamlessly connect the clamping action with the feed drive of the bending roller, realizing the automated linkage of clamping and feeding, which greatly improves the operating efficiency and ensures the synchronization of feeding.

[0015] Secondly, the control precision of the bending angle has reached a new level. This is thanks to the closed-loop detection system consisting of the angle detection sensor installed on the bending table and the sensor detection board fixed on the central frame. This system can monitor and provide feedback on the bending angle in real time. The controller processes the data and precisely controls the stroke of the bending cylinder, thereby realizing digital closed-loop control of the bending angle. This completely eliminates the reliance on operator experience and ensures the consistency and ultra-high precision of product processing.

[0016] Third, the equipment's versatility and flexibility are greatly enhanced. The arc adjustment holes set on both sides of the fixed table and bending table allow the support span to be changed by simply adjusting the installation position of the pressure seat, thereby quickly adapting to the processing requirements of different bending arcs, eliminating the trouble of changing molds, and meeting the characteristics of small-batch, multi-specification production.

[0017] Fourth, and finally, the design of the movable hole on the side clamp of the bending table ensures that the lever can slide freely during the bending table's rotation, perfectly solving the motion interference problem and guaranteeing the reliability and stability of the entire system. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A schematic diagram of the first axial view structure of the present invention is shown; Figure 2 The present invention is shown Figure 1 Schematic diagram of the A-section structure; Figure 3 A schematic diagram of the second axial view structure of the present invention is shown; Figure 4 A schematic diagram of the third axial view structure of the present invention is shown; Figure 5 The present invention is shown Figure 4 Schematic diagram of the B-type amplification section; Figure 6 This shows an axial view of the clamping seat on the fixing platform of the present invention in the upward separation state; Figure 7 A schematic diagram of the clamping seat in a split state of the present invention is shown. Figure 8 A schematic diagram of the bending table in the upward separation state of the present invention is shown.

[0021] List of reference numerals in the attached diagram: 1. Base frame; 2. Fixed bracket; 3. Fixed platform; 4. Neutral frame; 401. Sensor detection substrate; 5. Controller; 6. Feed motor; 601. Bending roller; 602. Dial; 603. Snap ring; 604. Anti-slip protrusion; 7. Bending table; 8. Bending cylinder; 9. Pressure seat; 901. Pressure roller; 10. Clamping base; 1001. Guide rail; 1002. Clamping motor; 1003. Double-ended lead screw; 1004. Clamping plate; 1005. Movable hole; 11. Lever; 12. Curvature adjustment hole; 13. Angle detection sensor; 15. Rotary hinge. Detailed Implementation

[0022] 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. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please refer to Figures 1 to 8 : Example: The present invention proposes a steel structure processing bending machine and its bending method, including: a base frame 1; a central frame 4 is fixedly installed vertically upward in the middle of the base frame 1; a horizontal "I"-shaped fixing bracket 2 is fixedly installed on the base frame 1 on one side of the central frame 4. A horizontal fixed platform 3 is fixedly installed on the upper end of the fixed bracket 2. A bending table 7 is rotatably installed on the inner end of the fixed platform 3 via a rotating hinge shaft 15. The bending table 7 has the same structure as the fixed platform 3. A bending cylinder 8 is rotatably installed between the end of the bending table 7 and the bottom end of the base frame 1. The root of the bending cylinder 8 is rotatably connected to the base frame 1 via a rotating shaft. The piston end of the bending cylinder 8 is rotatably connected to the bending table 7 via a rotating shaft. A pressure seat 9 is fixedly installed on the bending table 7 and the fixed platform 3 respectively by bolts. A clamping seat 10 is fixedly installed on the outer side of the pressure seat 9. The clamping seat 10 is equipped with a clamping mechanism. The structure is used to clamp the steel square tube to be bent; a feed motor 6 is fixedly installed on one side of the upper end of the central frame 4, and a bending roller 601 is rotatably installed between the upper ends of the central frame 4. The feed motor 6 drives the bending roller 601 to rotate. The bending roller 601 is provided with a feed component that cooperates with the clamping mechanism; a controller 5 is also hung on one side of the central frame 4; an angle detection sensor 13 is fixedly installed on the bending table 7 near the rotating hinge shaft 15. The angle detection sensor 13 is used to detect the flipping angle of the bending table 7, send data to the controller 5 for processing, and feed back to the bending cylinder 8 to control the flipping of the bending table 7.

[0024] Both the fixed platform 3 and the bending platform 7 have evenly spaced arc adjustment holes 12 on their long sides. The two arc adjustment holes 12 correspond to a bending arc of 5 degrees for the steel structure square tube to be bent.

[0025] Among them, an arc-shaped sensor detection base plate 401 is provided at the upper inner side of the central frame 4 corresponding to the position around the bending roller 601. The sensor detection base plate 401 is located on the side close to the bending table 7. The angle detection sensor 13 moves along the sensor detection base plate 401 during the rotation of the bending table 7. The sensor detection base plate 401 is provided with a detection module that cooperates with the angle detection sensor 13.

[0026] The feeding assembly includes a dial 602, a retaining ring 603, and anti-slip protrusions 604. The dial 602 is symmetrically mounted on the bending roller 601. The opposing walls of the dial 602 are circumferentially distributed with evenly spaced anti-slip protrusions 604. The retaining ring 603 is fixedly mounted on the outer wall of the dial 602. The retaining ring 603 and the dial 602 are connected by a groove. A horizontal lever 11 is provided between the two clamping mechanisms. The lever 11 slides between the grooves. When the two clamping mechanisms clamp the steel square tube to be bent, the lever 11 also drives the dial 602 to move inward to clamp the steel square tube. During the rotation, the friction provided by the anti-slip protrusions 604 drives the steel square tube to be fed.

[0027] The pressure roller 901 is installed laterally in the pressure seat 9, and the steel square tube to be bent passes over the pressure roller 901 and under the bending roller 601. The four corner bolt holes of the pressure seat 9 are fixed in the corresponding arc adjustment holes 12 by bolts.

[0028] The clamping mechanism includes a guide rail 1001, a clamping motor 1002, a double-ended lead screw 1003, and clamping plates 1004. A T-shaped guide rail 1001 with an upward protrusion is fixedly installed on the clamping seat 10. Two clamping plates 1004 are slidably clamped on the guide rail 1001. The double-ended lead screw 1003 is rotatably installed on the upper end of the clamping seat 10. Each clamping plate 1004 is vertically and rotatably screwed to the corresponding lead of the double-ended lead screw 1003. The clamping motor 1002 is fixedly installed on one side of the upper end of the clamping seat 10. The rotating shaft of the clamping motor 1002 is fixedly connected to the double-ended lead screw 1003 through a coupling.

[0029] The upper end of the clamping plate 1004 on the fixed platform 3 is fixedly connected to one end of the lever 11.

[0030] The bending table 7 has a vertically extending movable hole 1005 on the clamping plate 1004, through which the lever 11 slides through the movable hole 1005.

[0031] A bending method for a steel structure processing bending machine includes the following steps: Step 1: Place the square steel tube to be bent on the pressure seat 9 of the fixed platform 3 and the bending platform 7, and make the square tube pass over the pressure roller 901 and under the bending roller 601. Step 2: Start the clamping mechanism. The clamping motor 1002 drives the double-headed lead screw 1003 to rotate, which drives the two clamping plates 1004 to move towards each other along the guide rail 1001 and clamp the two ends of the square tube. At the same time, the clamping plates 1004 on the fixed platform 3 drive the lever 11 to move, so that the lever 11 is engaged in the slot between the retaining rings 603 of the dial 602 on the bending roller 601. Step 3: Start the feed motor 6 to drive the bending roller 601 to rotate, and drive the square tube to feed continuously through the friction between the anti-slip protrusion 604 on the dial 602 and the square tube; Step 4: Start the bending cylinder 8 to push the bending table 7 to rotate around the rotating hinge axis 15 to bend the square tube; Step 5: The angle detection sensor 13 detects the flip angle of the bending table 7 and sends the data to the controller 5. The controller 5 controls the stroke of the bending cylinder 8 according to the set value to achieve precise control of the bending angle.

[0032] A bending method for a steel structure processing bending machine, in step one, by selecting the installation position of the arc adjustment holes 12 on both sides of the fixed platform 3 and the bending platform 7, the spacing of the pressure seat 9 is adjusted to adapt to the requirements of different bending arcs. In step five, the angle detection sensor 13 moves along the sensor detection substrate 401 as the bending table 7 flips, and the angle signal is fed back in real time through the detection module on the sensor detection substrate 401. In step two, the clamping plate 1004 on the bending table 7 slides with the lever 11 through the movable hole 1005 to avoid interfering with the flipping action of the bending table 7.

[0033] The following provides further explanation and description of the functions and effects of each structure mentioned above, to help those skilled in the art better understand the technical solution: A horizontal fixed platform 3 is mounted on the upper end of the fixed bracket 2, and a rotatable bending platform 7 is hinged to the inner end of the fixed platform 3 via a rotating hinge shaft 15. The rotatable power of the bending platform 7 comes from the bending cylinder 8, whose cylinder body is hinged to the base frame 1 and whose piston rod end is hinged to the bending platform 7. This connection method ensures the smooth transmission of thrust, enabling the bending platform 7 to be stably raised or lowered around the hinge shaft, thereby completing the bending action.

[0034] To achieve the positioning, clamping, and feeding of the square tube, pressure seats 9 are bolted onto both the fixed table 3 and the bending table 7. The pressure seats 9 integrate a crucial clamping mechanism, which includes a double-ended lead screw 1003 driven by a clamping motor 1002. The rotation of the double-ended lead screw 1003 causes two clamping plates 1004 to move precisely in opposite directions along the T-shaped guide rail 1001, thereby firmly clamping or releasing both ends of the square tube—the foundation of the bending process. Furthermore, pressure rollers 901 are also installed in the pressure seats 9. As the square tube passes overhead, the pressure rollers 901 provide support and guidance, while also reducing frictional resistance during feeding.

[0035] The core of the equipment's power feed is the bending roller 601 mounted on the upper end of the central frame 4, which is directly driven by the feed motor 6. A sliding dial 602 is fitted onto the bending roller 601. Anti-slip protrusions 604 on the inner side of the dial 602 increase the friction with the square tube surface upon contact. The two dials 602 are linked to a lever 11 via retaining rings 603 on their outer edges. Ingeniously, one end of this lever 11 is fixed to a clamping plate 1004 on the side of the fixed platform 3, while the other end passes through a movable hole 1005 on the clamping plate 1004 on the side of the bending platform 7. Therefore, when the clamping mechanisms on both sides clamp the square tube, they simultaneously move the lever 11, pushing the two dials 602 to slide towards the center until they press tightly against the square tube surface. When the bending roller 601 rotates, it can continuously push the square tube forward by relying on friction to achieve automated feeding. The design of the movable hole 1005 ensures that the bending table 7 will not interfere with the movement of the lever 11 when it flips.

[0036] Precise control of the bending angle is another major highlight of this equipment. An angle detection sensor 13 is installed near the hinge axis on the bending table 7. This sensor moves along the arc-shaped sensor detection base plate 401 fixed inside the central frame 4 as the bending table 7 rotates. The sensor detection base plate 401 integrates a detection module that can detect and feed back the precise rotation angle signal of the bending table 7 to the controller 5 mounted on the side of the central frame 4 in real time. After receiving this signal, the controller 5 compares it with a preset value and precisely controls the stroke of the bending cylinder 8 accordingly, forming a closed-loop control system. This achieves precise digital control of the bending angle, ensuring consistent and high-quality product processing.

[0037] In addition, to adapt to different processing requirements, arc adjustment holes 12 are provided at intervals on both long sides of the fixed table 3 and the bending table 7. By selecting different hole positions to install the pressure seats 9, the relative distance between the two pressure seats 9 can be adjusted, thereby changing the effective support span of the square tube, so that it can adapt to different bending arc requirements, enhancing the versatility and flexibility of the equipment.

[0038] Working principle: At the start of operation, the steel square tube to be bent is placed on the pressure seat 9 of the fixed platform 3 and the bending platform 7, so that the tube passes over the pressure roller 901 and under the bending roller 601. Then, the clamping mechanism is activated, and the clamping motor 1002 drives the double-headed lead screw 1003 to rotate, which drives the two clamping plates 1004 to move towards each other along the guide rail 1001, thereby firmly clamping both ends of the square tube. This clamping action will simultaneously drive the clamping plate 1004 on one side of the fixed platform 3 to move the lever 11 fixed thereto, so that the lever 11 is engaged in the groove between the retaining rings 603 of the dial 602 on the bending roller 601, thereby pushing the two dials 602 to slide towards the center, and the anti-slip protrusions 604 on their disc walls tightly press against the surface of the square tube.

[0039] When the feed motor 6 starts and drives the bending roller 601 to rotate, the dial 602 drives the square tube to continuously feed forward automatically through friction. At the same time, the bending cylinder 8 starts, its piston rod extends, and pushes the bending table 7 to rotate smoothly around the rotation hinge axis 15, bending the square tube in the feeding state. During the entire bending process, the angle detection sensor 13 installed on the bending table 7 rotates with the table and moves along the arc-shaped sensor detection base plate 401 fixed inside the central frame 4. The detection module on the sensor detection base plate 401 captures the angle signal in real time and transmits it to the controller 5. The controller 5 compares the real-time angle with the preset value and adjusts the stroke of the bending cylinder 8 accordingly, forming a high-precision closed-loop control system to ensure the accuracy of the bending angle. It is worth mentioning that the movable hole 1005 on the side clamping plate 1004 of the bending table 7 allows the lever 11 to slide in it, perfectly avoiding motion interference between the bending table 7 and the lever 11 when it rotates. In addition, by selecting the curvature adjustment holes 12 at different positions on both sides of the fixed table 3 and the bending table 7 to install the pressure seat 9, the distance between the two pressure seats 9 can be adjusted, thereby flexibly adapting to the processing requirements of different bending curvatures and greatly enhancing the versatility of the equipment.

[0040] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0041] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0042] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A steel structure processing bending machine, comprising: Base frame (1); a central frame (4) is fixedly installed vertically upward in the middle of the base frame (1); a horizontal "I"-shaped fixed bracket (2) is fixedly installed on the base frame (1) on one side of the central frame (4). The fixed bracket (2) is characterized in that a horizontal fixed platform (3) is fixedly installed on the upper end of the fixed bracket (2), and a bending platform (7) is rotatably installed on the inner end of the fixed platform (3) through a rotating hinge shaft (15). The bending platform (7) has the same structure as the fixed platform (3). A bending cylinder (8) is rotatably installed between the end of the bending platform (7) and the bottom end of the base frame (1). The root of the bending cylinder (8) is rotatably connected to the base frame (1) through a rotating shaft. The piston end of the bending cylinder (8) is rotatably connected to the bending platform (7) through a rotating shaft. A pressure seat (9) is fixedly installed on the bending platform (7) and the fixed platform (3) respectively by bolts. A clamping seat (10) is fixedly installed on the outer side of the pressure seat (9). A clamping machine is provided on the clamping seat (10). The clamping mechanism is used to clamp the steel square tube to be bent; a feed motor (6) is fixedly installed on one side of the upper end of the central frame (4), and a bending roller (601) is rotatably installed between the upper ends of the central frame (4). The feed motor (6) drives the bending roller (601) to rotate. The bending roller (601) is provided with a feed component that cooperates with the clamping mechanism; a controller (5) is also hung on one side of the central frame (4); an angle detection sensor (13) is fixedly installed on the bending table (7) near the rotating hinge shaft (15). The angle detection sensor (13) is used to detect the flip angle of the bending table (7), send data to the controller (5) for processing, and feed back to the bending cylinder (8) to control the bending table (7) to flip.

2. The steel structure processing bending machine according to claim 1, characterized in that, Both sides of the fixed platform (3) and the bending platform (7) are provided with evenly spaced arc adjustment holes (12), and the two arc adjustment holes (12) correspond to a bending arc of 5 degrees for the steel structure square tube to be bent.

3. A steel structure processing bending machine according to claim 2, characterized in that, An arc-shaped sensor detection substrate (401) is provided at the upper inner side of the neutral frame (4) corresponding to the circumference of the bending roller (601). The sensor detection substrate (401) is located on the side close to the bending table (7). The angle detection sensor (13) moves along the sensor detection substrate (401) as the bending table (7) rotates. The sensor detection substrate (401) is provided with a detection module that cooperates with the angle detection sensor (13).

4. A steel structure processing bending machine according to claim 3, characterized in that, The feeding assembly includes a dial (602), a retaining ring (603), and anti-slip protrusions (604). The dial (602) is symmetrically mounted on the bending roller (601) and slides left and right. The dial (604) is distributed in a ring on the opposite wall of the dial (602) with evenly spaced anti-slip protrusions. The retaining ring (603) is fixedly provided in a ring on the outer wall of the dial (602). There is a groove between the edge of the retaining ring (603) and the dial (602). A horizontal lever (11) is provided between the two clamping mechanisms. The lever (11) slides between the grooves. When the two clamping mechanisms clamp the steel square tube to be bent, the lever (11) also drives the dial (602) to move inward to clamp the steel square tube to be bent. During the rotation, the steel square tube is fed by the friction provided by the anti-slip protrusions (604).

5. A steel structure processing bending machine according to claim 4, characterized in that, The pressure roller (901) is installed laterally in the pressure seat (9), and the steel square tube to be bent passes over the pressure roller (901) and under the bending roller (601). The four corner bolt holes of the pressure seat (9) are fixed in the corresponding arc adjustment holes (12) by bolts.

6. A steel structure processing bending machine according to claim 5, characterized in that, The clamping mechanism includes a guide rail (1001), a clamping motor (1002), a double-ended lead screw (1003), and clamping plates (1004). A T-shaped guide rail (1001) with an upward protrusion is fixedly installed on the clamping seat (10). Two clamping plates (1004) are slidably clamped on the guide rail (1001). The double-ended lead screw (1003) is rotatably installed on the upper end of the clamping seat (10). Each clamping plate (1004) is vertically and rotatably screwed to the corresponding lead of the double-ended lead screw (1003). The clamping motor (1002) is fixedly installed on one side of the upper end of the clamping seat (10). The rotating shaft of the clamping motor (1002) is fixedly connected to the double-ended lead screw (1003) through a coupling.

7. A steel structure processing bending machine according to claim 1, characterized in that, The upper end of the clamp (1004) on the fixed platform (3) is fixedly connected to one end of the lever (11).

8. A steel structure processing bending machine according to claim 6, characterized in that, The bending table (7) has a vertically extending movable hole (1005) on the clamping plate (1004), and the other end of the lever (11) slides through the movable hole (1005).

9. A bending method for a steel structure processing bending machine according to claim 8, characterized in that, Includes the following steps: Step 1: Place the steel square tube to be bent on the pressure seat (9) of the fixed platform (3) and the bending platform (7), and make the square tube pass over the pressure roller (901) and under the bending roller (601); Step 2: Start the clamping mechanism. Drive the double-headed lead screw (1003) to rotate through the clamping motor (1002), which will drive the two clamping plates (1004) to move towards each other along the guide rail (1001) to clamp the two ends of the square tube. At the same time, the clamping plates (1004) on the fixed platform (3) will drive the lever (11) to move, so that the lever (11) will be engaged in the slot between the retaining rings (603) of the dial (602) on the bending roller (601). Step 3: Start the feed motor (6) to drive the bending roller (601) to rotate, and drive the square tube to feed continuously through the friction between the anti-slip protrusion (604) on the dial (602) and the square tube; Step 4: Start the bending cylinder (8) to push the bending table (7) to rotate around the pivot (15) and bend the square tube; Step 5: The angle detection sensor (13) detects the flip angle of the bending table (7) and sends the data to the controller (5). The controller (5) controls the stroke of the bending cylinder (8) according to the set value to achieve precise control of the bending angle.

10. A bending method for a steel structure processing bending machine according to claim 9, characterized in that, In step one, by selecting the installation position of the arc adjustment holes (12) on both sides of the fixed platform (3) and the bending platform (7), the spacing of the pressure seat (9) is adjusted to adapt to the requirements of different bending arcs; In step five, the angle detection sensor (13) moves along the sensor detection substrate (401) as the bending table (7) flips, and the angle signal is fed back in real time through the detection module on the sensor detection substrate (401); In step two, the clamp (1004) on the bending table (7) slides with the lever (11) through the movable hole (1005) to avoid interfering with the flipping action of the bending table (7).

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